submission 372985
novo_force · python · License unknown
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submission.py
curl "https://kernelindex.com/api/v1/implementations/kernelbot-modal-nvfp4-dual-gemm-372985?include=source"interfacepython
Compatibility
measured onNVIDIA B200
declared hardwareNVIDIA B200
architecturessm_100
dtypesfp8_e4m3, nvfp4
Benchmark evidence
1 measurement across 1 GPU, fastest first.
Operation / workload
Hardware
Latency
Rank
Observed
Reported · How evidence levels are derived →
Source and license
sourceavailable
revision digestsha256:fe0e11af0282998044f5337fe025cbe6a33c01c57a3245a5f5424aed20ad3756
license declaredunknown
license concludedunknown
authorsnovo_force
imported2026-08-15
Techniques
Extracted from the mirrored source by pattern, never inferred. Each row cites its line.
async-copy
cute.arch.cp_async_bulk_wait_group(0)fused-epilogue
_DEBUG_FORCE_EPILOGUE_SYNC = os.environ.get("NVFP4_DEBUG_FORCE_EPILOGUE_SYNC", "0") == "1"mbarrier
self.epilog_sync_barrier = pipeline.NamedBarrier(shared-memory
self.smem_capacity = utils.get_smem_capacity_in_bytes("sm_100")tcgen05
tcgen05.CtaGroup.ONE,warp-specialization
ab_pipeline_producer_group = pipeline.CooperativeGroup(pipeline.Agent.Thread)Kernel source
submission.py2227 lines
from typing import Optional, Tuple, Type, Union
import os
os.environ.setdefault("CUTE_DSL_ARCH", "sm_100a")
os.environ.setdefault("TARGET_SM_ARCH", "sm_100a")
os.environ.setdefault("PYTORCH_CUDA_ALLOC_CONF", "expandable_segments:True")
_DEBUG_FORCE_EPILOGUE_SYNC = os.environ.get("NVFP4_DEBUG_FORCE_EPILOGUE_SYNC", "0") == "1"
import torch
import torch.nn.functional as F
import cutlass
import cutlass.cute as cute
from cutlass.cute.nvgpu import cpasync, tcgen05
import cutlass.cute.math as cmath
from cutlass.cute.runtime import make_ptr
import cutlass.pipeline as pipeline
import cutlass.utils as utils
import cutlass.utils.blackwell_helpers as sm100_utils
import cutlass.utils.blockscaled_layout as blockscaled_utils
ab_dtype = cutlass.Float4E2M1FN
sf_dtype = cutlass.Float8E4M3FN
sf_vec_size = 16
class Sm100BlockScaledDenseGemmKernel:
def __init__(
self,
mma_tiler_mn: Tuple[int, int],
cluster_shape_mn: Tuple[int, int],
c_dtype: Type[cutlass.Numeric],
):
self.ab_dtype = cutlass.Float4E2M1FN
self.sf_dtype = cutlass.Float8E4M3FN
self.acc_dtype = cutlass.Float32
self.c_dtype = c_dtype
self.sf_vec_size = 16
self.epilog_warp_id = (0, 1, 2, 3)
self.mma_warp_id = 4
self.tma_warp_id = 5
self.threads_per_cta = 32 * len(
(self.mma_warp_id, self.tma_warp_id, *self.epilog_warp_id)
)
self.mma_tiler_mn = mma_tiler_mn
self.cluster_shape_mn = cluster_shape_mn
self.occupancy = 1
self.smem_capacity = utils.get_smem_capacity_in_bytes("sm_100")
self.num_tmem_alloc_cols = 512
self.epilog_sync_barrier = pipeline.NamedBarrier(
barrier_id=1,
num_threads=32 * len(self.epilog_warp_id),
)
self.tmem_alloc_barrier = pipeline.NamedBarrier(
barrier_id=2,
num_threads=32 * len((self.mma_warp_id, *self.epilog_warp_id)),
)
def _setup_attributes(self):
tiled_mma = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_tiler_mn,
)
mma_inst_tile_k = 4
mma_inst_shape_k = cute.size(tiled_mma.shape_mnk, mode=[2])
self.mma_tiler = (
self.mma_tiler_mn[0],
self.mma_tiler_mn[1],
mma_inst_shape_k * mma_inst_tile_k,
)
self.cta_tile_shape_mnk = (
self.mma_tiler[0] // cute.size(tiled_mma.thr_id.shape),
self.mma_tiler[1],
self.mma_tiler[2],
)
self.cluster_layout_vmnk = cute.tiled_divide(
cute.make_layout((*self.cluster_shape_mn, 1)),
(tiled_mma.thr_id.shape,),
)
self.mma_inst_shape_mn_sfb = (
self.mma_tiler_mn[0],
cute.round_up(self.mma_tiler_mn[1], 128),
)
tiled_mma_sfb = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_inst_shape_mn_sfb,
)
self.mma_tiler_sfb = (
self.mma_inst_shape_mn_sfb[0],
self.mma_inst_shape_mn_sfb[1],
mma_inst_shape_k * mma_inst_tile_k,
)
self.cluster_layout_sfb_vmnk = cute.tiled_divide(
cute.make_layout((*self.cluster_shape_mn, 1)),
(tiled_mma_sfb.thr_id.shape,),
)
self.num_mcast_ctas_a = cute.size(self.cluster_layout_vmnk.shape[2])
self.num_mcast_ctas_b = cute.size(self.cluster_layout_vmnk.shape[1])
self.num_mcast_ctas_sfb = cute.size(self.cluster_layout_sfb_vmnk.shape[1])
self.is_a_mcast = self.num_mcast_ctas_a > 1
self.is_b_mcast = self.num_mcast_ctas_b > 1
self.is_sfb_mcast = self.num_mcast_ctas_sfb > 1
self.epi_tile = sm100_utils.compute_epilogue_tile_shape(
self.cta_tile_shape_mnk,
False,
self.c_layout,
self.c_dtype,
)
self.epi_tile_n = cute.size(self.epi_tile[1])
self.num_acc_stage, self.num_ab_stage, self.num_c_stage = self._compute_stages(
tiled_mma,
self.mma_tiler,
self.a_dtype,
self.b_dtype,
self.epi_tile,
self.c_dtype,
self.c_layout,
self.sf_dtype,
self.sf_vec_size,
self.smem_capacity,
self.occupancy,
)
self.prefetch_stage = self.num_ab_stage
self.a_smem_layout_staged = sm100_utils.make_smem_layout_a(
tiled_mma,
self.mma_tiler,
self.ab_dtype,
self.num_ab_stage,
)
self.b_smem_layout_staged = sm100_utils.make_smem_layout_b(
tiled_mma,
self.mma_tiler,
self.ab_dtype,
self.num_ab_stage,
)
self.sfa_smem_layout_staged = blockscaled_utils.make_smem_layout_sfa(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
self.num_ab_stage,
)
self.sfb_smem_layout_staged = blockscaled_utils.make_smem_layout_sfb(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
self.num_ab_stage,
)
self.c_smem_layout_staged = sm100_utils.make_smem_layout_epi(
self.c_dtype,
self.c_layout,
self.epi_tile,
self.num_c_stage,
)
@cute.jit
def __call__(
self,
a_ptr: cute.Pointer,
b_ptr: cute.Pointer,
sfa_ptr: cute.Pointer,
sfb_ptr: cute.Pointer,
c_ptr: cute.Pointer,
m: cutlass.Int32,
n: cutlass.Int32,
k: cutlass.Int32,
l: cutlass.Int32,
):
self.a_dtype: Type[cutlass.Numeric] = a_ptr.value_type
self.b_dtype: Type[cutlass.Numeric] = b_ptr.value_type
self.sf_dtype: Type[cutlass.Numeric] = sfa_ptr.value_type
self.c_dtype: Type[cutlass.Numeric] = c_ptr.value_type
self.a_major_mode, self.b_major_mode, self.c_layout = (
tcgen05.OperandMajorMode.K,
tcgen05.OperandMajorMode.K,
utils.LayoutEnum.ROW_MAJOR,
)
self._setup_attributes()
a_tensor = cute.make_tensor(
a_ptr,
cute.make_ordered_layout(
(cute.assume(m, 32), k, l), order=(1, 0, 2)
),
)
b_tensor = cute.make_tensor(
b_ptr,
cute.make_ordered_layout(
(cute.assume(n, 32), k, l), order=(1, 0, 2)
),
)
c_tensor = cute.make_tensor(
c_ptr,
cute.make_ordered_layout(
(m, cute.assume(n, 32), l), order=(1, 0, 2)
),
)
sfa_layout = blockscaled_utils.tile_atom_to_shape_SF(
a_tensor.shape, self.sf_vec_size
)
sfa_tensor = cute.make_tensor(sfa_ptr, sfa_layout)
sfb_layout = blockscaled_utils.tile_atom_to_shape_SF(
b_tensor.shape, self.sf_vec_size
)
sfb_tensor = cute.make_tensor(sfb_ptr, sfb_layout)
tiled_mma = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_tiler_mn,
)
tiled_mma_sfb = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_inst_shape_mn_sfb,
)
a_op = sm100_utils.cluster_shape_to_tma_atom_A(
self.cluster_shape_mn, tiled_mma.thr_id
)
a_smem_layout = cute.slice_(self.a_smem_layout_staged, (None, None, None, 0))
tma_atom_a, tma_tensor_a = cute.nvgpu.make_tiled_tma_atom_A(
a_op,
a_tensor,
a_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
)
b_op = sm100_utils.cluster_shape_to_tma_atom_B(
self.cluster_shape_mn, tiled_mma.thr_id
)
b_smem_layout = cute.slice_(self.b_smem_layout_staged, (None, None, None, 0))
tma_atom_b, tma_tensor_b = cute.nvgpu.make_tiled_tma_atom_B(
b_op,
b_tensor,
b_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
)
sfa_op = sm100_utils.cluster_shape_to_tma_atom_A(
self.cluster_shape_mn, tiled_mma.thr_id
)
sfa_smem_layout = cute.slice_(
self.sfa_smem_layout_staged, (None, None, None, 0)
)
tma_atom_sfa, tma_tensor_sfa = cute.nvgpu.make_tiled_tma_atom_A(
sfa_op,
sfa_tensor,
sfa_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
internal_type=cutlass.Int16,
)
sfb_op = sm100_utils.cluster_shape_to_tma_atom_SFB(
self.cluster_shape_mn, tiled_mma.thr_id
)
sfb_smem_layout = cute.slice_(
self.sfb_smem_layout_staged, (None, None, None, 0)
)
tma_atom_sfb, tma_tensor_sfb = cute.nvgpu.make_tiled_tma_atom_B(
sfb_op,
sfb_tensor,
sfb_smem_layout,
self.mma_tiler_sfb,
tiled_mma_sfb,
self.cluster_layout_sfb_vmnk.shape,
internal_type=cutlass.Int16,
)
atom_thr_size = cute.size(tiled_mma.thr_id.shape)
a_copy_size = cute.size_in_bytes(self.ab_dtype, a_smem_layout)
b_copy_size = cute.size_in_bytes(self.ab_dtype, b_smem_layout)
sfa_copy_size = cute.size_in_bytes(self.sf_dtype, sfa_smem_layout)
sfb_copy_size = cute.size_in_bytes(self.sf_dtype, sfb_smem_layout)
self.num_tma_load_bytes = (
a_copy_size + b_copy_size + sfa_copy_size + sfb_copy_size
) * atom_thr_size
epi_smem_layout = cute.slice_(self.c_smem_layout_staged, (None, None, 0))
tma_atom_c, tma_tensor_c = cpasync.make_tiled_tma_atom(
cpasync.CopyBulkTensorTileS2GOp(),
c_tensor,
epi_smem_layout,
self.epi_tile,
)
grid = self._compute_grid(c_tensor, self.cta_tile_shape_mnk, self.cluster_shape_mn)
self.buffer_align_bytes = 1024
@cute.struct
class SharedStorage:
ab_full_mbar_ptr: cute.struct.MemRange[cutlass.Int64, self.num_ab_stage]
ab_empty_mbar_ptr: cute.struct.MemRange[cutlass.Int64, self.num_ab_stage]
acc_full_mbar_ptr: cute.struct.MemRange[cutlass.Int64, self.num_acc_stage]
tmem_dealloc_mbar_ptr: cutlass.Int64
tmem_holding_buf: cutlass.Int32
sC: cute.struct.Align[
cute.struct.MemRange[
self.c_dtype, cute.cosize(self.c_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sA: cute.struct.Align[
cute.struct.MemRange[
self.a_dtype, cute.cosize(self.a_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sB: cute.struct.Align[
cute.struct.MemRange[
self.b_dtype, cute.cosize(self.b_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sSFA: cute.struct.Align[
cute.struct.MemRange[
self.sf_dtype, cute.cosize(self.sfa_smem_layout_staged)
],
self.buffer_align_bytes,
]
sSFB: cute.struct.Align[
cute.struct.MemRange[
self.sf_dtype, cute.cosize(self.sfb_smem_layout_staged)
],
self.buffer_align_bytes,
]
self.shared_storage = SharedStorage
self.kernel(
tiled_mma,
tiled_mma_sfb,
tma_atom_a,
tma_tensor_a,
tma_atom_b,
tma_tensor_b,
tma_atom_sfa,
tma_tensor_sfa,
tma_atom_sfb,
tma_tensor_sfb,
tma_atom_c,
tma_tensor_c,
self.cluster_layout_vmnk,
self.cluster_layout_sfb_vmnk,
self.a_smem_layout_staged,
self.b_smem_layout_staged,
self.sfa_smem_layout_staged,
self.sfb_smem_layout_staged,
self.c_smem_layout_staged,
self.epi_tile,
).launch(
grid=grid,
block=[self.threads_per_cta, 1, 1],
cluster=(*self.cluster_shape_mn, 1),
smem=self.shared_storage.size_in_bytes(),
)
return
@cute.kernel
def kernel(
self,
tiled_mma: cute.TiledMma,
tiled_mma_sfb: cute.TiledMma,
tma_atom_a: cute.CopyAtom,
mA_mkl: cute.Tensor,
tma_atom_b: cute.CopyAtom,
mB_nkl: cute.Tensor,
tma_atom_sfa: cute.CopyAtom,
mSFA_mkl: cute.Tensor,
tma_atom_sfb: cute.CopyAtom,
mSFB_nkl: cute.Tensor,
tma_atom_c: Optional[cute.CopyAtom],
mC_mnl: cute.Tensor,
cluster_layout_vmnk: cute.Layout,
cluster_layout_sfb_vmnk: cute.Layout,
a_smem_layout_staged: cute.ComposedLayout,
b_smem_layout_staged: cute.ComposedLayout,
sfa_smem_layout_staged: cute.Layout,
sfb_smem_layout_staged: cute.Layout,
c_smem_layout_staged: Union[cute.Layout, cute.ComposedLayout, None],
epi_tile: cute.Tile,
):
warp_idx = cute.arch.warp_idx()
warp_idx = cute.arch.make_warp_uniform(warp_idx)
if warp_idx == self.tma_warp_id:
cpasync.prefetch_descriptor(tma_atom_a)
cpasync.prefetch_descriptor(tma_atom_b)
cpasync.prefetch_descriptor(tma_atom_sfa)
cpasync.prefetch_descriptor(tma_atom_sfb)
cpasync.prefetch_descriptor(tma_atom_c)
bidx, bidy, bidz = cute.arch.block_idx()
mma_tile_coord_v = bidx % cute.size(tiled_mma.thr_id.shape)
cta_rank_in_cluster = cute.arch.make_warp_uniform(cute.arch.block_idx_in_cluster())
block_in_cluster_coord_vmnk = cluster_layout_vmnk.get_flat_coord(cta_rank_in_cluster)
block_in_cluster_coord_sfb_vmnk = cluster_layout_sfb_vmnk.get_flat_coord(cta_rank_in_cluster)
cta_coord = (bidx, bidy, bidz)
mma_tile_coord_mnl = (
cta_coord[0] // cute.size(tiled_mma.thr_id.shape),
cta_coord[1],
cta_coord[2],
)
tidx, _, _ = cute.arch.thread_idx()
smem = utils.SmemAllocator()
storage = smem.allocate(self.shared_storage)
ab_pipeline_producer_group = pipeline.CooperativeGroup(pipeline.Agent.Thread)
num_tma_producer = self.num_mcast_ctas_a + self.num_mcast_ctas_b - 1
ab_pipeline_consumer_group = pipeline.CooperativeGroup(
pipeline.Agent.Thread, num_tma_producer
)
ab_pipeline = pipeline.PipelineTmaAsync.create(
barrier_storage=storage.ab_full_mbar_ptr.data_ptr(),
num_stages=self.num_ab_stage,
producer_group=ab_pipeline_producer_group,
consumer_group=ab_pipeline_consumer_group,
tx_count=self.num_tma_load_bytes,
cta_layout_vmnk=cluster_layout_vmnk,
defer_sync=True,
)
acc_pipeline_producer_group = pipeline.CooperativeGroup(pipeline.Agent.Thread)
num_acc_consumer_threads = len(self.epilog_warp_id)
acc_pipeline_consumer_group = pipeline.CooperativeGroup(
pipeline.Agent.Thread, num_acc_consumer_threads
)
acc_pipeline = pipeline.PipelineUmmaAsync.create(
barrier_storage=storage.acc_full_mbar_ptr.data_ptr(),
num_stages=self.num_acc_stage,
producer_group=acc_pipeline_producer_group,
consumer_group=acc_pipeline_consumer_group,
cta_layout_vmnk=cluster_layout_vmnk,
)
tmem = utils.TmemAllocator(
storage.tmem_holding_buf,
barrier_for_retrieve=self.tmem_alloc_barrier,
allocator_warp_id=self.epilog_warp_id[0],
)
cute.arch.cluster_arrive_relaxed()
sC = storage.sC.get_tensor(c_smem_layout_staged.outer, swizzle=c_smem_layout_staged.inner)
sA = storage.sA.get_tensor(a_smem_layout_staged.outer, swizzle=a_smem_layout_staged.inner)
sB = storage.sB.get_tensor(b_smem_layout_staged.outer, swizzle=b_smem_layout_staged.inner)
sSFA = storage.sSFA.get_tensor(sfa_smem_layout_staged)
sSFB = storage.sSFB.get_tensor(sfb_smem_layout_staged)
a_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_vmnk, block_in_cluster_coord_vmnk, mcast_mode=2
)
b_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_vmnk, block_in_cluster_coord_vmnk, mcast_mode=1
)
sfa_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_vmnk, block_in_cluster_coord_vmnk, mcast_mode=2
)
sfb_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_sfb_vmnk, block_in_cluster_coord_sfb_vmnk, mcast_mode=1
)
gA_mkl = cute.local_tile(
mA_mkl, cute.slice_(self.mma_tiler, (None, 0, None)), (None, None, None)
)
gB_nkl = cute.local_tile(
mB_nkl, cute.slice_(self.mma_tiler, (0, None, None)), (None, None, None)
)
gSFA_mkl = cute.local_tile(
mSFA_mkl, cute.slice_(self.mma_tiler, (None, 0, None)), (None, None, None)
)
gSFB_nkl = cute.local_tile(
mSFB_nkl,
cute.slice_(self.mma_tiler_sfb, (0, None, None)),
(None, None, None),
)
gC_mnl = cute.local_tile(
mC_mnl, cute.slice_(self.mma_tiler, (None, None, 0)), (None, None, None)
)
k_block_cnt = cute.size(gA_mkl, mode=[3])
thr_mma = tiled_mma.get_slice(mma_tile_coord_v)
thr_mma_sfb = tiled_mma_sfb.get_slice(mma_tile_coord_v)
tCgA = thr_mma.partition_A(gA_mkl)
tCgB = thr_mma.partition_B(gB_nkl)
tCgSFA = thr_mma.partition_A(gSFA_mkl)
tCgSFB = thr_mma_sfb.partition_B(gSFB_nkl)
tCgC = thr_mma.partition_C(gC_mnl)
a_cta_layout = cute.make_layout(
cute.slice_(cluster_layout_vmnk, (0, 0, None, 0)).shape
)
tAsA, tAgA = cpasync.tma_partition(
tma_atom_a,
block_in_cluster_coord_vmnk[2],
a_cta_layout,
cute.group_modes(sA, 0, 3),
cute.group_modes(tCgA, 0, 3),
)
b_cta_layout = cute.make_layout(
cute.slice_(cluster_layout_vmnk, (0, None, 0, 0)).shape
)
tBsB, tBgB = cpasync.tma_partition(
tma_atom_b,
block_in_cluster_coord_vmnk[1],
b_cta_layout,
cute.group_modes(sB, 0, 3),
cute.group_modes(tCgB, 0, 3),
)
sfa_cta_layout = a_cta_layout
tAsSFA, tAgSFA = cute.nvgpu.cpasync.tma_partition(
tma_atom_sfa,
block_in_cluster_coord_vmnk[2],
sfa_cta_layout,
cute.group_modes(sSFA, 0, 3),
cute.group_modes(tCgSFA, 0, 3),
)
tAsSFA = cute.filter_zeros(tAsSFA)
tAgSFA = cute.filter_zeros(tAgSFA)
sfb_cta_layout = cute.make_layout(
cute.slice_(cluster_layout_sfb_vmnk, (0, None, 0, 0)).shape
)
tBsSFB, tBgSFB = cute.nvgpu.cpasync.tma_partition(
tma_atom_sfb,
block_in_cluster_coord_sfb_vmnk[1],
sfb_cta_layout,
cute.group_modes(sSFB, 0, 3),
cute.group_modes(tCgSFB, 0, 3),
)
tBsSFB = cute.filter_zeros(tBsSFB)
tBgSFB = cute.filter_zeros(tBgSFB)
tCrA = tiled_mma.make_fragment_A(sA)
tCrB = tiled_mma.make_fragment_B(sB)
acc_shape = tiled_mma.partition_shape_C(self.mma_tiler[:2])
tCtAcc_fake = tiled_mma.make_fragment_C(acc_shape)
cute.arch.cluster_wait()
if warp_idx == self.tma_warp_id:
ab_producer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Producer, self.num_ab_stage
)
tAgA_slice = tAgA[(None, mma_tile_coord_mnl[0], None, mma_tile_coord_mnl[2])]
tBgB_slice = tBgB[(None, mma_tile_coord_mnl[1], None, mma_tile_coord_mnl[2])]
tAgSFA_slice = tAgSFA[(None, mma_tile_coord_mnl[0], None, mma_tile_coord_mnl[2])]
slice_n = mma_tile_coord_mnl[1]
if cutlass.const_expr(self.cta_tile_shape_mnk[1] == 64):
slice_n = mma_tile_coord_mnl[1] // 2
tBgSFB_slice = tBgSFB[(None, slice_n, None, mma_tile_coord_mnl[2])]
for prefetch_tile in cutlass.range(0, self.prefetch_stage, unroll=1):
cute.prefetch(tma_atom_a, tAgA_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_b, tBgB_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_sfa, tAgSFA_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_sfb, tBgSFB_slice[(None, prefetch_tile)])
peek_ab_empty_status = ab_pipeline.producer_try_acquire(ab_producer_state)
for k_block_idx in cutlass.range(0, k_block_cnt, 1, unroll=1):
ab_pipeline.producer_acquire(ab_producer_state, peek_ab_empty_status)
cute.copy(
tma_atom_a,
tAgA_slice[(None, ab_producer_state.count)],
tAsA[(None, ab_producer_state.index)],
tma_bar_ptr=ab_pipeline.producer_get_barrier(ab_producer_state),
mcast_mask=a_full_mcast_mask,
)
cute.copy(
tma_atom_b,
tBgB_slice[(None, ab_producer_state.count)],
tBsB[(None, ab_producer_state.index)],
tma_bar_ptr=ab_pipeline.producer_get_barrier(ab_producer_state),
mcast_mask=b_full_mcast_mask,
)
cute.copy(
tma_atom_sfa,
tAgSFA_slice[(None, ab_producer_state.count)],
tAsSFA[(None, ab_producer_state.index)],
tma_bar_ptr=ab_pipeline.producer_get_barrier(ab_producer_state),
mcast_mask=sfa_full_mcast_mask,
)
cute.copy(
tma_atom_sfb,
tBgSFB_slice[(None, ab_producer_state.count)],
tBsSFB[(None, ab_producer_state.index)],
tma_bar_ptr=ab_pipeline.producer_get_barrier(ab_producer_state),
mcast_mask=sfb_full_mcast_mask,
)
if k_block_idx < k_block_cnt - self.prefetch_stage:
next_k_idx = ab_producer_state.count + self.prefetch_stage
cute.prefetch(tma_atom_a, tAgA_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_b, tBgB_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_sfa, tAgSFA_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_sfb, tBgSFB_slice[(None, next_k_idx)])
ab_producer_state.advance()
if ab_producer_state.count < k_block_cnt:
peek_ab_empty_status = ab_pipeline.producer_try_acquire(
ab_producer_state
)
ab_pipeline.producer_tail(ab_producer_state)
elif warp_idx == self.mma_warp_id:
tmem.wait_for_alloc()
acc_tmem_ptr = tmem.retrieve_ptr(self.acc_dtype)
tCtAcc = cute.make_tensor(acc_tmem_ptr, tCtAcc_fake.layout)
sfa_tmem_ptr = cute.recast_ptr(
acc_tmem_ptr + tcgen05.find_tmem_tensor_col_offset(tCtAcc),
dtype=self.sf_dtype,
)
tCtSFA_layout = blockscaled_utils.make_tmem_layout_sfa(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
cute.slice_(sfa_smem_layout_staged, (None, None, None, 0)),
)
tCtSFA = cute.make_tensor(sfa_tmem_ptr, tCtSFA_layout)
sfb_tmem_ptr = cute.recast_ptr(
acc_tmem_ptr
+ tcgen05.find_tmem_tensor_col_offset(tCtAcc)
+ tcgen05.find_tmem_tensor_col_offset(tCtSFA),
dtype=self.sf_dtype,
)
tCtSFB_layout = blockscaled_utils.make_tmem_layout_sfb(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
cute.slice_(sfb_smem_layout_staged, (None, None, None, 0)),
)
tCtSFB = cute.make_tensor(sfb_tmem_ptr, tCtSFB_layout)
tiled_copy_s2t_sfa, tCsSFA_compact_s2t, tCtSFA_compact_s2t = (
self.mainloop_s2t_copy_and_partition(sSFA, tCtSFA)
)
tiled_copy_s2t_sfb, tCsSFB_compact_s2t, tCtSFB_compact_s2t = (
self.mainloop_s2t_copy_and_partition(sSFB, tCtSFB)
)
ab_consumer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Consumer, self.num_ab_stage
)
acc_producer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Producer, self.num_acc_stage
)
peek_ab_full_status = ab_pipeline.consumer_try_wait(ab_consumer_state)
tCtSFB_mma = tCtSFB
if cutlass.const_expr(self.cta_tile_shape_mnk[1] == 64):
offset = cutlass.Int32((mma_tile_coord_mnl[1] % 2) * 2)
shifted_ptr = cute.recast_ptr(
acc_tmem_ptr
+ tcgen05.find_tmem_tensor_col_offset(tCtAcc)
+ tcgen05.find_tmem_tensor_col_offset(tCtSFA)
+ offset,
dtype=self.sf_dtype,
)
tCtSFB_mma = cute.make_tensor(shifted_ptr, tCtSFB_layout)
for k_block_idx in range(k_block_cnt):
ab_pipeline.consumer_wait(ab_consumer_state, peek_ab_full_status)
s2t_stage_coord = (None, None, None, None, ab_consumer_state.index)
tCsSFA_compact_s2t_staged = tCsSFA_compact_s2t[s2t_stage_coord]
tCsSFB_compact_s2t_staged = tCsSFB_compact_s2t[s2t_stage_coord]
cute.copy(
tiled_copy_s2t_sfa,
tCsSFA_compact_s2t_staged,
tCtSFA_compact_s2t,
)
cute.copy(
tiled_copy_s2t_sfb,
tCsSFB_compact_s2t_staged,
tCtSFB_compact_s2t,
)
num_kphases = cute.size(tCrA, mode=[2])
for kphase_idx in cutlass.range(num_kphases, unroll_full=True):
kphase_coord = (None, None, kphase_idx, ab_consumer_state.index)
sf_kphase_coord = (None, None, kphase_idx)
tiled_mma.set(tcgen05.Field.SFA, tCtSFA[sf_kphase_coord].iterator)
tiled_mma.set(tcgen05.Field.SFB, tCtSFB_mma[sf_kphase_coord].iterator)
if k_block_idx == 0 and kphase_idx == 0:
tiled_mma.set(tcgen05.Field.ACCUMULATE, False)
else:
tiled_mma.set(tcgen05.Field.ACCUMULATE, True)
cute.gemm(
tiled_mma,
tCtAcc,
tCrA[kphase_coord],
tCrB[kphase_coord],
tCtAcc,
)
ab_pipeline.consumer_release(ab_consumer_state)
ab_consumer_state.advance()
if ab_consumer_state.count < k_block_cnt:
peek_ab_full_status = ab_pipeline.consumer_try_wait(
ab_consumer_state
)
acc_pipeline.producer_commit(acc_producer_state)
elif warp_idx in self.epilog_warp_id:
tmem.allocate(self.num_tmem_alloc_cols)
tmem.wait_for_alloc()
acc_tmem_ptr = tmem.retrieve_ptr(self.acc_dtype)
tCtAcc = cute.make_tensor(acc_tmem_ptr, tCtAcc_fake.layout)
tiled_copy_t2r, tTR_tAcc, tTR_rAcc = self.epilog_tmem_copy_and_partition(
tidx, tCtAcc, tCgC, epi_tile
)
tTR_rC = cute.make_fragment(tTR_rAcc.shape, self.c_dtype)
tiled_copy_r2s, tRS_rC, tRS_sC = self.epilog_smem_copy_and_partition(
tiled_copy_t2r, tTR_rC, tidx, sC
)
tma_atom_c, bSG_sC, bSG_gC = self.epilog_gmem_copy_and_partition(
tidx, tma_atom_c, tCgC, epi_tile, sC
)
bSG_gC = bSG_gC[(None, None, None, *mma_tile_coord_mnl)]
acc_consumer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Consumer, self.num_acc_stage
)
acc_pipeline.consumer_wait(acc_consumer_state)
tTR_tAcc = cute.group_modes(tTR_tAcc, 3, cute.rank(tTR_tAcc))
bSG_gC = cute.group_modes(bSG_gC, 1, cute.rank(bSG_gC))
subtile_cnt = cute.size(tTR_tAcc.shape, mode=[3])
for subtile_idx in range(subtile_cnt):
tTR_tAcc_mn = tTR_tAcc[(None, None, None, subtile_idx)]
cute.copy(tiled_copy_t2r, tTR_tAcc_mn, tTR_rAcc)
tRS_rC.store(tTR_rAcc.load().to(self.c_dtype))
cute.copy(
tiled_copy_r2s,
tRS_rC,
tRS_sC[(None, None, None, subtile_idx)],
)
cute.arch.fence_view_async_shared()
if warp_idx == self.epilog_warp_id[0]:
cute.copy(
tma_atom_c,
bSG_sC[(None, subtile_idx)],
bSG_gC[(None, subtile_idx)],
)
tmem.relinquish_alloc_permit()
tmem.free(acc_tmem_ptr)
def mainloop_s2t_copy_and_partition(
self,
sSF: cute.Tensor,
tSF: cute.Tensor,
) -> Tuple[cute.TiledCopy, cute.Tensor, cute.Tensor]:
tCsSF_compact = cute.filter_zeros(sSF)
tCtSF_compact = cute.filter_zeros(tSF)
copy_atom_s2t = cute.make_copy_atom(
tcgen05.Cp4x32x128bOp(tcgen05.CtaGroup.ONE),
self.sf_dtype,
)
tiled_copy_s2t = tcgen05.make_s2t_copy(copy_atom_s2t, tCtSF_compact)
thr_copy_s2t = tiled_copy_s2t.get_slice(0)
tCsSF_compact_s2t_ = thr_copy_s2t.partition_S(tCsSF_compact)
tCsSF_compact_s2t = tcgen05.get_s2t_smem_desc_tensor(
tiled_copy_s2t, tCsSF_compact_s2t_
)
tCtSF_compact_s2t = thr_copy_s2t.partition_D(tCtSF_compact)
return tiled_copy_s2t, tCsSF_compact_s2t, tCtSF_compact_s2t
def epilog_tmem_copy_and_partition(
self,
tidx: cutlass.Int32,
tAcc: cute.Tensor,
gC_mnl: cute.Tensor,
epi_tile: cute.Tile,
) -> Tuple[cute.TiledCopy, cute.Tensor, cute.Tensor]:
copy_atom_t2r = sm100_utils.get_tmem_load_op(
self.cta_tile_shape_mnk,
self.c_layout,
self.c_dtype,
self.acc_dtype,
epi_tile,
False,
)
tAcc_epi = cute.flat_divide(tAcc[((None, None), 0, 0)], epi_tile)
tiled_copy_t2r = tcgen05.make_tmem_copy(
copy_atom_t2r, tAcc_epi[(None, None, 0, 0)]
)
thr_copy_t2r = tiled_copy_t2r.get_slice(tidx)
tTR_tAcc = thr_copy_t2r.partition_S(tAcc_epi)
gC_mnl_epi = cute.flat_divide(
gC_mnl[((None, None), 0, 0, None, None, None)], epi_tile
)
tTR_gC = thr_copy_t2r.partition_D(gC_mnl_epi)
tTR_rAcc = cute.make_fragment(
tTR_gC[(None, None, None, 0, 0, 0, 0, 0)].shape, self.acc_dtype
)
return tiled_copy_t2r, tTR_tAcc, tTR_rAcc
def epilog_smem_copy_and_partition(
self,
tiled_copy_t2r: cute.TiledCopy,
tTR_rC: cute.Tensor,
tidx: cutlass.Int32,
sC: cute.Tensor,
) -> Tuple[cute.TiledCopy, cute.Tensor, cute.Tensor]:
copy_atom_r2s = sm100_utils.get_smem_store_op(
self.c_layout, self.c_dtype, self.acc_dtype, tiled_copy_t2r
)
tiled_copy_r2s = cute.make_tiled_copy_D(copy_atom_r2s, tiled_copy_t2r)
thr_copy_r2s = tiled_copy_r2s.get_slice(tidx)
tRS_sC = thr_copy_r2s.partition_D(sC)
tRS_rC = tiled_copy_r2s.retile(tTR_rC)
return tiled_copy_r2s, tRS_rC, tRS_sC
def epilog_gmem_copy_and_partition(
self,
tidx: cutlass.Int32,
atom: Union[cute.CopyAtom, cute.TiledCopy],
gC_mnl: cute.Tensor,
epi_tile: cute.Tile,
sC: cute.Tensor,
) -> Tuple[cute.CopyAtom, cute.Tensor, cute.Tensor]:
gC_epi = cute.flat_divide(
gC_mnl[((None, None), 0, 0, None, None, None)], epi_tile
)
tma_atom_c = atom
sC_for_tma_partition = cute.group_modes(sC, 0, 2)
gC_for_tma_partition = cute.group_modes(gC_epi, 0, 2)
bSG_sC, bSG_gC = cpasync.tma_partition(
tma_atom_c,
0,
cute.make_layout(1),
sC_for_tma_partition,
gC_for_tma_partition,
)
return tma_atom_c, bSG_sC, bSG_gC
@staticmethod
def _compute_stages(
tiled_mma: cute.TiledMma,
mma_tiler_mnk: Tuple[int, int, int],
a_dtype: Type[cutlass.Numeric],
b_dtype: Type[cutlass.Numeric],
epi_tile: cute.Tile,
c_dtype: Type[cutlass.Numeric],
c_layout: utils.LayoutEnum,
sf_dtype: Type[cutlass.Numeric],
sf_vec_size: int,
smem_capacity: int,
occupancy: int,
) -> Tuple[int, int, int]:
num_acc_stage = 1
num_c_stage = 3
a_smem_layout_stage_one = sm100_utils.make_smem_layout_a(
tiled_mma,
mma_tiler_mnk,
a_dtype,
1,
)
b_smem_layout_staged_one = sm100_utils.make_smem_layout_b(
tiled_mma,
mma_tiler_mnk,
b_dtype,
1,
)
sfa_smem_layout_staged_one = blockscaled_utils.make_smem_layout_sfa(
tiled_mma,
mma_tiler_mnk,
sf_vec_size,
1,
)
sfb_smem_layout_staged_one = blockscaled_utils.make_smem_layout_sfb(
tiled_mma,
mma_tiler_mnk,
sf_vec_size,
1,
)
c_smem_layout_staged_one = sm100_utils.make_smem_layout_epi(
c_dtype,
c_layout,
epi_tile,
1,
)
ab_bytes_per_stage = (
cute.size_in_bytes(a_dtype, a_smem_layout_stage_one)
+ cute.size_in_bytes(b_dtype, b_smem_layout_staged_one)
+ cute.size_in_bytes(sf_dtype, sfa_smem_layout_staged_one)
+ cute.size_in_bytes(sf_dtype, sfb_smem_layout_staged_one)
)
mbar_helpers_bytes = 1024
c_bytes_per_stage = cute.size_in_bytes(c_dtype, c_smem_layout_staged_one)
c_bytes = c_bytes_per_stage * num_c_stage
num_ab_stage = (smem_capacity - (mbar_helpers_bytes + c_bytes)) // ab_bytes_per_stage
num_c_stage += (
smem_capacity - ab_bytes_per_stage * num_ab_stage - (mbar_helpers_bytes + c_bytes)
) // (c_bytes_per_stage)
return num_acc_stage, num_ab_stage, num_c_stage
@staticmethod
def _compute_grid(
c: cute.Tensor,
cta_tile_shape_mnk: Tuple[int, int, int],
cluster_shape_mn: Tuple[int, int],
) -> Tuple[int, int, int]:
grid = (
cute.ceil_div(c.layout.shape[0], cta_tile_shape_mnk[0]),
cute.ceil_div(c.layout.shape[1], cta_tile_shape_mnk[1]),
c.layout.shape[2],
)
return grid
class Sm100BlockScaledDualGemmKernel:
def __init__(
self,
mma_tiler_mn: Tuple[int, int],
cluster_shape_mn: Tuple[int, int],
c_dtype: Type[cutlass.Numeric],
):
self.ab_dtype = cutlass.Float4E2M1FN
self.sf_dtype = cutlass.Float8E4M3FN
self.acc_dtype = cutlass.Float32
self.c_dtype = c_dtype
self.sf_vec_size = 16
self.epilog_warp_id = (0, 1, 2, 3)
self.mma_warp_id = 4
self.tma_warp_id = 5
self.threads_per_cta = 32 * len(
(self.mma_warp_id, self.tma_warp_id, *self.epilog_warp_id)
)
self.mma_tiler_mn = mma_tiler_mn
self.cluster_shape_mn = cluster_shape_mn
self.occupancy = 1
self.smem_capacity = utils.get_smem_capacity_in_bytes("sm_100")
if mma_tiler_mn == (128, 64):
self.num_tmem_alloc_cols = 256
else:
self.num_tmem_alloc_cols = 512
self.tmem_alloc_barrier = pipeline.NamedBarrier(
barrier_id=2,
num_threads=32 * len((self.mma_warp_id, *self.epilog_warp_id)),
)
self.epilog_sync_barrier = pipeline.NamedBarrier(
barrier_id=1,
num_threads=32 * len(self.epilog_warp_id),
)
def _setup_attributes(self):
tiled_mma = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_tiler_mn,
)
mma_inst_tile_k = 4
mma_inst_shape_k = cute.size(tiled_mma.shape_mnk, mode=[2])
self.mma_tiler = (
self.mma_tiler_mn[0],
self.mma_tiler_mn[1],
mma_inst_shape_k * mma_inst_tile_k,
)
self.cta_tile_shape_mnk = (
self.mma_tiler[0] // cute.size(tiled_mma.thr_id.shape),
self.mma_tiler[1],
self.mma_tiler[2],
)
self.cluster_layout_vmnk = cute.tiled_divide(
cute.make_layout((*self.cluster_shape_mn, 1)),
(tiled_mma.thr_id.shape,),
)
self.mma_inst_shape_mn_sfb = (
self.mma_tiler_mn[0],
cute.round_up(self.mma_tiler_mn[1], 128),
)
tiled_mma_sfb = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_inst_shape_mn_sfb,
)
self.mma_tiler_sfb = (
self.mma_inst_shape_mn_sfb[0],
self.mma_inst_shape_mn_sfb[1],
mma_inst_shape_k * mma_inst_tile_k,
)
self.cluster_layout_sfb_vmnk = cute.tiled_divide(
cute.make_layout((*self.cluster_shape_mn, 1)),
(tiled_mma_sfb.thr_id.shape,),
)
self.num_mcast_ctas_a = cute.size(self.cluster_layout_vmnk.shape[2])
self.num_mcast_ctas_b = cute.size(self.cluster_layout_vmnk.shape[1])
self.num_mcast_ctas_sfb = cute.size(self.cluster_layout_sfb_vmnk.shape[1])
self.epi_tile = sm100_utils.compute_epilogue_tile_shape(
self.cta_tile_shape_mnk,
False,
self.c_layout,
self.c_dtype,
)
self.num_acc_stage, self.num_ab_stage, self.num_c_stage = self._compute_stages(
tiled_mma,
self.mma_tiler,
self.a_dtype,
self.b_dtype,
self.epi_tile,
self.c_dtype,
self.c_layout,
self.sf_dtype,
self.sf_vec_size,
self.smem_capacity,
self.occupancy,
)
self.prefetch_stage = self.num_ab_stage
self.a_smem_layout_staged = sm100_utils.make_smem_layout_a(
tiled_mma,
self.mma_tiler,
self.ab_dtype,
self.num_ab_stage,
)
self.b_smem_layout_staged = sm100_utils.make_smem_layout_b(
tiled_mma,
self.mma_tiler,
self.ab_dtype,
self.num_ab_stage,
)
self.b2_smem_layout_staged = sm100_utils.make_smem_layout_b(
tiled_mma,
self.mma_tiler,
self.ab_dtype,
self.num_ab_stage,
)
self.sfa_smem_layout_staged = blockscaled_utils.make_smem_layout_sfa(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
self.num_ab_stage,
)
self.sfb_smem_layout_staged = blockscaled_utils.make_smem_layout_sfb(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
self.num_ab_stage,
)
self.sfb2_smem_layout_staged = blockscaled_utils.make_smem_layout_sfb(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
self.num_ab_stage,
)
self.c_smem_layout_staged = sm100_utils.make_smem_layout_epi(
self.c_dtype,
self.c_layout,
self.epi_tile,
self.num_c_stage,
)
@cute.jit
def __call__(
self,
a_ptr: cute.Pointer,
b1_ptr: cute.Pointer,
b2_ptr: cute.Pointer,
sfa_ptr: cute.Pointer,
sfb1_ptr: cute.Pointer,
sfb2_ptr: cute.Pointer,
c_ptr: cute.Pointer,
m: cutlass.Int32,
n: cutlass.Int32,
k: cutlass.Int32,
l: cutlass.Int32,
):
self.a_dtype: Type[cutlass.Numeric] = a_ptr.value_type
self.b_dtype: Type[cutlass.Numeric] = b1_ptr.value_type
self.sf_dtype: Type[cutlass.Numeric] = sfa_ptr.value_type
self.c_dtype: Type[cutlass.Numeric] = c_ptr.value_type
self.a_major_mode, self.b_major_mode, self.c_layout = (
tcgen05.OperandMajorMode.K,
tcgen05.OperandMajorMode.K,
utils.LayoutEnum.ROW_MAJOR,
)
self._setup_attributes()
a_tensor = cute.make_tensor(
a_ptr,
cute.make_ordered_layout(
(cute.assume(m, 32), k, l), order=(1, 0, 2)
),
)
b1_tensor = cute.make_tensor(
b1_ptr,
cute.make_ordered_layout(
(cute.assume(n, 32), k, l), order=(1, 0, 2)
),
)
b2_tensor = cute.make_tensor(
b2_ptr,
cute.make_ordered_layout(
(cute.assume(n, 32), k, l), order=(1, 0, 2)
),
)
c_tensor = cute.make_tensor(
c_ptr,
cute.make_ordered_layout(
(m, cute.assume(n, 32), l), order=(1, 0, 2)
),
)
sfa_layout = blockscaled_utils.tile_atom_to_shape_SF(
a_tensor.shape, self.sf_vec_size
)
sfa_tensor = cute.make_tensor(sfa_ptr, sfa_layout)
sfb_layout = blockscaled_utils.tile_atom_to_shape_SF(
b1_tensor.shape, self.sf_vec_size
)
sfb1_tensor = cute.make_tensor(sfb1_ptr, sfb_layout)
sfb2_tensor = cute.make_tensor(sfb2_ptr, sfb_layout)
tiled_mma = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_tiler_mn,
)
tiled_mma_sfb = sm100_utils.make_blockscaled_trivial_tiled_mma(
self.ab_dtype,
self.a_major_mode,
self.b_major_mode,
self.sf_dtype,
self.sf_vec_size,
tcgen05.CtaGroup.ONE,
self.mma_inst_shape_mn_sfb,
)
a_op = sm100_utils.cluster_shape_to_tma_atom_A(
self.cluster_shape_mn, tiled_mma.thr_id
)
a_smem_layout = cute.slice_(self.a_smem_layout_staged, (None, None, None, 0))
tma_atom_a, tma_tensor_a = cute.nvgpu.make_tiled_tma_atom_A(
a_op,
a_tensor,
a_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
)
b_op = sm100_utils.cluster_shape_to_tma_atom_B(
self.cluster_shape_mn, tiled_mma.thr_id
)
b1_smem_layout = cute.slice_(self.b_smem_layout_staged, (None, None, None, 0))
b2_smem_layout = cute.slice_(self.b2_smem_layout_staged, (None, None, None, 0))
tma_atom_b1, tma_tensor_b1 = cute.nvgpu.make_tiled_tma_atom_B(
b_op,
b1_tensor,
b1_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
)
tma_atom_b2, tma_tensor_b2 = cute.nvgpu.make_tiled_tma_atom_B(
b_op,
b2_tensor,
b2_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
)
sfa_op = sm100_utils.cluster_shape_to_tma_atom_A(
self.cluster_shape_mn, tiled_mma.thr_id
)
sfa_smem_layout = cute.slice_(self.sfa_smem_layout_staged, (None, None, None, 0))
tma_atom_sfa, tma_tensor_sfa = cute.nvgpu.make_tiled_tma_atom_A(
sfa_op,
sfa_tensor,
sfa_smem_layout,
self.mma_tiler,
tiled_mma,
self.cluster_layout_vmnk.shape,
internal_type=cutlass.Int16,
)
sfb_op = sm100_utils.cluster_shape_to_tma_atom_SFB(
self.cluster_shape_mn, tiled_mma.thr_id
)
sfb1_smem_layout = cute.slice_(self.sfb_smem_layout_staged, (None, None, None, 0))
sfb2_smem_layout = cute.slice_(self.sfb2_smem_layout_staged, (None, None, None, 0))
tma_atom_sfb1, tma_tensor_sfb1 = cute.nvgpu.make_tiled_tma_atom_B(
sfb_op,
sfb1_tensor,
sfb1_smem_layout,
self.mma_tiler_sfb,
tiled_mma_sfb,
self.cluster_layout_sfb_vmnk.shape,
internal_type=cutlass.Int16,
)
tma_atom_sfb2, tma_tensor_sfb2 = cute.nvgpu.make_tiled_tma_atom_B(
sfb_op,
sfb2_tensor,
sfb2_smem_layout,
self.mma_tiler_sfb,
tiled_mma_sfb,
self.cluster_layout_sfb_vmnk.shape,
internal_type=cutlass.Int16,
)
atom_thr_size = cute.size(tiled_mma.thr_id.shape)
a_copy_size = cute.size_in_bytes(self.ab_dtype, a_smem_layout)
b1_copy_size = cute.size_in_bytes(self.ab_dtype, b1_smem_layout)
b2_copy_size = cute.size_in_bytes(self.ab_dtype, b2_smem_layout)
sfa_copy_size = cute.size_in_bytes(self.sf_dtype, sfa_smem_layout)
sfb1_copy_size = cute.size_in_bytes(self.sf_dtype, sfb1_smem_layout)
sfb2_copy_size = cute.size_in_bytes(self.sf_dtype, sfb2_smem_layout)
self.num_tma_load_bytes = (
a_copy_size
+ b1_copy_size
+ b2_copy_size
+ sfa_copy_size
+ sfb1_copy_size
+ sfb2_copy_size
) * atom_thr_size
epi_smem_layout = cute.slice_(self.c_smem_layout_staged, (None, None, 0))
tma_atom_c, tma_tensor_c = cpasync.make_tiled_tma_atom(
cpasync.CopyBulkTensorTileS2GOp(), c_tensor, epi_smem_layout, self.epi_tile
)
grid = Sm100BlockScaledDenseGemmKernel._compute_grid(
c_tensor, self.cta_tile_shape_mnk, self.cluster_shape_mn
)
self.buffer_align_bytes = 1024
@cute.struct
class SharedStorage:
ab_full_mbar_ptr: cute.struct.MemRange[cutlass.Int64, self.num_ab_stage]
ab_empty_mbar_ptr: cute.struct.MemRange[cutlass.Int64, self.num_ab_stage]
acc_full_mbar_ptr: cute.struct.MemRange[cutlass.Int64, self.num_acc_stage]
tmem_dealloc_mbar_ptr: cutlass.Int64
tmem_holding_buf: cutlass.Int32
sC: cute.struct.Align[
cute.struct.MemRange[
self.c_dtype, cute.cosize(self.c_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sA: cute.struct.Align[
cute.struct.MemRange[
self.a_dtype, cute.cosize(self.a_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sB1: cute.struct.Align[
cute.struct.MemRange[
self.b_dtype, cute.cosize(self.b_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sB2: cute.struct.Align[
cute.struct.MemRange[
self.b_dtype, cute.cosize(self.b2_smem_layout_staged.outer)
],
self.buffer_align_bytes,
]
sSFA: cute.struct.Align[
cute.struct.MemRange[
self.sf_dtype, cute.cosize(self.sfa_smem_layout_staged)
],
self.buffer_align_bytes,
]
sSFB1: cute.struct.Align[
cute.struct.MemRange[
self.sf_dtype, cute.cosize(self.sfb_smem_layout_staged)
],
self.buffer_align_bytes,
]
sSFB2: cute.struct.Align[
cute.struct.MemRange[
self.sf_dtype, cute.cosize(self.sfb2_smem_layout_staged)
],
self.buffer_align_bytes,
]
self.shared_storage = SharedStorage
self.kernel(
tiled_mma,
tiled_mma_sfb,
tma_atom_a,
tma_tensor_a,
tma_atom_b1,
tma_tensor_b1,
tma_atom_b2,
tma_tensor_b2,
tma_atom_sfa,
tma_tensor_sfa,
tma_atom_sfb1,
tma_tensor_sfb1,
tma_atom_sfb2,
tma_tensor_sfb2,
tma_atom_c,
tma_tensor_c,
self.cluster_layout_vmnk,
self.cluster_layout_sfb_vmnk,
self.a_smem_layout_staged,
self.b_smem_layout_staged,
self.b2_smem_layout_staged,
self.sfa_smem_layout_staged,
self.sfb_smem_layout_staged,
self.sfb2_smem_layout_staged,
self.c_smem_layout_staged,
self.epi_tile,
).launch(
grid=grid,
block=[self.threads_per_cta, 1, 1],
cluster=(*self.cluster_shape_mn, 1),
smem=self.shared_storage.size_in_bytes(),
)
return
@cute.kernel
def kernel(
self,
tiled_mma: cute.TiledMma,
tiled_mma_sfb: cute.TiledMma,
tma_atom_a: cute.CopyAtom,
mA_mkl: cute.Tensor,
tma_atom_b1: cute.CopyAtom,
mB1_nkl: cute.Tensor,
tma_atom_b2: cute.CopyAtom,
mB2_nkl: cute.Tensor,
tma_atom_sfa: cute.CopyAtom,
mSFA_mkl: cute.Tensor,
tma_atom_sfb1: cute.CopyAtom,
mSFB1_nkl: cute.Tensor,
tma_atom_sfb2: cute.CopyAtom,
mSFB2_nkl: cute.Tensor,
tma_atom_c: Optional[cute.CopyAtom],
mC_mnl: cute.Tensor,
cluster_layout_vmnk: cute.Layout,
cluster_layout_sfb_vmnk: cute.Layout,
a_smem_layout_staged: cute.ComposedLayout,
b1_smem_layout_staged: cute.ComposedLayout,
b2_smem_layout_staged: cute.ComposedLayout,
sfa_smem_layout_staged: cute.Layout,
sfb1_smem_layout_staged: cute.Layout,
sfb2_smem_layout_staged: cute.Layout,
c_smem_layout_staged: Union[cute.Layout, cute.ComposedLayout, None],
epi_tile: cute.Tile,
):
warp_idx = cute.arch.make_warp_uniform(cute.arch.warp_idx())
if warp_idx == self.tma_warp_id:
cpasync.prefetch_descriptor(tma_atom_a)
cpasync.prefetch_descriptor(tma_atom_b1)
cpasync.prefetch_descriptor(tma_atom_b2)
cpasync.prefetch_descriptor(tma_atom_sfa)
cpasync.prefetch_descriptor(tma_atom_sfb1)
cpasync.prefetch_descriptor(tma_atom_sfb2)
cpasync.prefetch_descriptor(tma_atom_c)
bidx, bidy, bidz = cute.arch.block_idx()
mma_tile_coord_v = bidx % cute.size(tiled_mma.thr_id.shape)
cta_rank_in_cluster = cute.arch.make_warp_uniform(cute.arch.block_idx_in_cluster())
block_in_cluster_coord_vmnk = cluster_layout_vmnk.get_flat_coord(cta_rank_in_cluster)
block_in_cluster_coord_sfb_vmnk = cluster_layout_sfb_vmnk.get_flat_coord(cta_rank_in_cluster)
mma_tile_coord_mnl = (
bidx // cute.size(tiled_mma.thr_id.shape),
bidy,
bidz,
)
tidx, _, _ = cute.arch.thread_idx()
smem = utils.SmemAllocator()
storage = smem.allocate(self.shared_storage)
ab_pipeline = pipeline.PipelineTmaAsync.create(
barrier_storage=storage.ab_full_mbar_ptr.data_ptr(),
num_stages=self.num_ab_stage,
producer_group=pipeline.CooperativeGroup(pipeline.Agent.Thread),
consumer_group=pipeline.CooperativeGroup(
pipeline.Agent.Thread, self.num_mcast_ctas_a + self.num_mcast_ctas_b - 1
),
tx_count=self.num_tma_load_bytes,
cta_layout_vmnk=cluster_layout_vmnk,
defer_sync=True,
)
acc_pipeline = pipeline.PipelineUmmaAsync.create(
barrier_storage=storage.acc_full_mbar_ptr.data_ptr(),
num_stages=self.num_acc_stage,
producer_group=pipeline.CooperativeGroup(pipeline.Agent.Thread),
consumer_group=pipeline.CooperativeGroup(pipeline.Agent.Thread, len(self.epilog_warp_id)),
cta_layout_vmnk=cluster_layout_vmnk,
)
tmem = utils.TmemAllocator(
storage.tmem_holding_buf,
barrier_for_retrieve=self.tmem_alloc_barrier,
allocator_warp_id=self.epilog_warp_id[0],
)
cute.arch.cluster_arrive_relaxed()
sC = storage.sC.get_tensor(
c_smem_layout_staged.outer, swizzle=c_smem_layout_staged.inner
)
sA = storage.sA.get_tensor(
a_smem_layout_staged.outer, swizzle=a_smem_layout_staged.inner
)
sB1 = storage.sB1.get_tensor(
b1_smem_layout_staged.outer, swizzle=b1_smem_layout_staged.inner
)
sB2 = storage.sB2.get_tensor(
b2_smem_layout_staged.outer, swizzle=b2_smem_layout_staged.inner
)
sSFA = storage.sSFA.get_tensor(sfa_smem_layout_staged)
sSFB1 = storage.sSFB1.get_tensor(sfb1_smem_layout_staged)
sSFB2 = storage.sSFB2.get_tensor(sfb2_smem_layout_staged)
a_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_vmnk, block_in_cluster_coord_vmnk, mcast_mode=2
)
b_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_vmnk, block_in_cluster_coord_vmnk, mcast_mode=1
)
sfa_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_vmnk, block_in_cluster_coord_vmnk, mcast_mode=2
)
sfb_full_mcast_mask = cpasync.create_tma_multicast_mask(
cluster_layout_sfb_vmnk, block_in_cluster_coord_sfb_vmnk, mcast_mode=1
)
gA_mkl = cute.local_tile(
mA_mkl, cute.slice_(self.mma_tiler, (None, 0, None)), (None, None, None)
)
gB1_nkl = cute.local_tile(
mB1_nkl, cute.slice_(self.mma_tiler, (0, None, None)), (None, None, None)
)
gB2_nkl = cute.local_tile(
mB2_nkl, cute.slice_(self.mma_tiler, (0, None, None)), (None, None, None)
)
gSFA_mkl = cute.local_tile(
mSFA_mkl, cute.slice_(self.mma_tiler, (None, 0, None)), (None, None, None)
)
gSFB1_nkl = cute.local_tile(
mSFB1_nkl,
cute.slice_(self.mma_tiler_sfb, (0, None, None)),
(None, None, None),
)
gSFB2_nkl = cute.local_tile(
mSFB2_nkl,
cute.slice_(self.mma_tiler_sfb, (0, None, None)),
(None, None, None),
)
gC_mnl = cute.local_tile(
mC_mnl, cute.slice_(self.mma_tiler, (None, None, 0)), (None, None, None)
)
k_block_cnt = cute.size(gA_mkl, mode=[3])
thr_mma = tiled_mma.get_slice(mma_tile_coord_v)
thr_mma_sfb = tiled_mma_sfb.get_slice(mma_tile_coord_v)
tCgA = thr_mma.partition_A(gA_mkl)
tCgB1 = thr_mma.partition_B(gB1_nkl)
tCgB2 = thr_mma.partition_B(gB2_nkl)
tCgSFA = thr_mma.partition_A(gSFA_mkl)
tCgSFB1 = thr_mma_sfb.partition_B(gSFB1_nkl)
tCgSFB2 = thr_mma_sfb.partition_B(gSFB2_nkl)
tCgC = thr_mma.partition_C(gC_mnl)
a_cta_layout = cute.make_layout(
cute.slice_(cluster_layout_vmnk, (0, 0, None, 0)).shape
)
tAsA, tAgA = cpasync.tma_partition(
tma_atom_a,
block_in_cluster_coord_vmnk[2],
a_cta_layout,
cute.group_modes(sA, 0, 3),
cute.group_modes(tCgA, 0, 3),
)
b_cta_layout = cute.make_layout(
cute.slice_(cluster_layout_vmnk, (0, None, 0, 0)).shape
)
tBsB1, tBgB1 = cpasync.tma_partition(
tma_atom_b1,
block_in_cluster_coord_vmnk[1],
b_cta_layout,
cute.group_modes(sB1, 0, 3),
cute.group_modes(tCgB1, 0, 3),
)
tBsB2, tBgB2 = cpasync.tma_partition(
tma_atom_b2,
block_in_cluster_coord_vmnk[1],
b_cta_layout,
cute.group_modes(sB2, 0, 3),
cute.group_modes(tCgB2, 0, 3),
)
tAsSFA, tAgSFA = cute.nvgpu.cpasync.tma_partition(
tma_atom_sfa,
block_in_cluster_coord_vmnk[2],
a_cta_layout,
cute.group_modes(sSFA, 0, 3),
cute.group_modes(tCgSFA, 0, 3),
)
tAsSFA = cute.filter_zeros(tAsSFA)
tAgSFA = cute.filter_zeros(tAgSFA)
sfb_cta_layout = cute.make_layout(
cute.slice_(cluster_layout_sfb_vmnk, (0, None, 0, 0)).shape
)
tBsSFB1, tBgSFB1 = cute.nvgpu.cpasync.tma_partition(
tma_atom_sfb1,
block_in_cluster_coord_sfb_vmnk[1],
sfb_cta_layout,
cute.group_modes(sSFB1, 0, 3),
cute.group_modes(tCgSFB1, 0, 3),
)
tBsSFB2, tBgSFB2 = cute.nvgpu.cpasync.tma_partition(
tma_atom_sfb2,
block_in_cluster_coord_sfb_vmnk[1],
sfb_cta_layout,
cute.group_modes(sSFB2, 0, 3),
cute.group_modes(tCgSFB2, 0, 3),
)
tBsSFB1 = cute.filter_zeros(tBsSFB1)
tBgSFB1 = cute.filter_zeros(tBgSFB1)
tBsSFB2 = cute.filter_zeros(tBsSFB2)
tBgSFB2 = cute.filter_zeros(tBgSFB2)
tCrA = tiled_mma.make_fragment_A(sA)
tCrB1 = tiled_mma.make_fragment_B(sB1)
tCrB2 = tiled_mma.make_fragment_B(sB2)
acc_shape = tiled_mma.partition_shape_C(self.mma_tiler[:2])
tCtAcc_fake = tiled_mma.make_fragment_C(acc_shape)
cute.arch.cluster_wait()
if warp_idx == self.tma_warp_id:
ab_producer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Producer, self.num_ab_stage
)
tAgA_slice = tAgA[(None, mma_tile_coord_mnl[0], None, mma_tile_coord_mnl[2])]
tBgB1_slice = tBgB1[(None, mma_tile_coord_mnl[1], None, mma_tile_coord_mnl[2])]
tBgB2_slice = tBgB2[(None, mma_tile_coord_mnl[1], None, mma_tile_coord_mnl[2])]
tAgSFA_slice = tAgSFA[(None, mma_tile_coord_mnl[0], None, mma_tile_coord_mnl[2])]
slice_n = mma_tile_coord_mnl[1]
if cutlass.const_expr(self.cta_tile_shape_mnk[1] == 64):
slice_n = mma_tile_coord_mnl[1] // 2
tBgSFB1_slice = tBgSFB1[(None, slice_n, None, mma_tile_coord_mnl[2])]
tBgSFB2_slice = tBgSFB2[(None, slice_n, None, mma_tile_coord_mnl[2])]
for prefetch_tile in cutlass.range(0, self.prefetch_stage, unroll=1):
cute.prefetch(tma_atom_a, tAgA_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_b1, tBgB1_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_b2, tBgB2_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_sfa, tAgSFA_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_sfb1, tBgSFB1_slice[(None, prefetch_tile)])
cute.prefetch(tma_atom_sfb2, tBgSFB2_slice[(None, prefetch_tile)])
peek_ab_empty_status = ab_pipeline.producer_try_acquire(ab_producer_state)
for k_block_idx in cutlass.range(0, k_block_cnt, 1, unroll=1):
ab_pipeline.producer_acquire(ab_producer_state, peek_ab_empty_status)
bar_ptr = ab_pipeline.producer_get_barrier(ab_producer_state)
idx = ab_producer_state.index
cnt = ab_producer_state.count
cute.copy(
tma_atom_a,
tAgA_slice[(None, cnt)],
tAsA[(None, idx)],
tma_bar_ptr=bar_ptr,
mcast_mask=a_full_mcast_mask,
)
cute.copy(
tma_atom_b1,
tBgB1_slice[(None, cnt)],
tBsB1[(None, idx)],
tma_bar_ptr=bar_ptr,
mcast_mask=b_full_mcast_mask,
)
cute.copy(
tma_atom_b2,
tBgB2_slice[(None, cnt)],
tBsB2[(None, idx)],
tma_bar_ptr=bar_ptr,
mcast_mask=b_full_mcast_mask,
)
cute.copy(
tma_atom_sfa,
tAgSFA_slice[(None, cnt)],
tAsSFA[(None, idx)],
tma_bar_ptr=bar_ptr,
mcast_mask=sfa_full_mcast_mask,
)
cute.copy(
tma_atom_sfb1,
tBgSFB1_slice[(None, cnt)],
tBsSFB1[(None, idx)],
tma_bar_ptr=bar_ptr,
mcast_mask=sfb_full_mcast_mask,
)
cute.copy(
tma_atom_sfb2,
tBgSFB2_slice[(None, cnt)],
tBsSFB2[(None, idx)],
tma_bar_ptr=bar_ptr,
mcast_mask=sfb_full_mcast_mask,
)
if k_block_idx < k_block_cnt - self.prefetch_stage:
next_k_idx = cnt + self.prefetch_stage
cute.prefetch(tma_atom_a, tAgA_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_b1, tBgB1_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_b2, tBgB2_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_sfa, tAgSFA_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_sfb1, tBgSFB1_slice[(None, next_k_idx)])
cute.prefetch(tma_atom_sfb2, tBgSFB2_slice[(None, next_k_idx)])
ab_producer_state.advance()
if ab_producer_state.count < k_block_cnt:
peek_ab_empty_status = ab_pipeline.producer_try_acquire(
ab_producer_state
)
ab_pipeline.producer_tail(ab_producer_state)
elif warp_idx == self.mma_warp_id:
tmem.wait_for_alloc()
base_ptr = tmem.retrieve_ptr(self.acc_dtype)
tCtAcc1 = cute.make_tensor(base_ptr, tCtAcc_fake.layout)
base_ptr_2 = base_ptr + tcgen05.find_tmem_tensor_col_offset(tCtAcc1)
tCtAcc2 = cute.make_tensor(base_ptr_2, tCtAcc_fake.layout)
sf_base_ptr = base_ptr_2 + tcgen05.find_tmem_tensor_col_offset(tCtAcc2)
sfa_tmem_ptr = cute.recast_ptr(sf_base_ptr, dtype=self.sf_dtype)
tCtSFA_layout = blockscaled_utils.make_tmem_layout_sfa(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
cute.slice_(sfa_smem_layout_staged, (None, None, None, 0)),
)
tCtSFA = cute.make_tensor(sfa_tmem_ptr, tCtSFA_layout)
sfb1_tmem_ptr = cute.recast_ptr(
sf_base_ptr + tcgen05.find_tmem_tensor_col_offset(tCtSFA),
dtype=self.sf_dtype,
)
tCtSFB_layout = blockscaled_utils.make_tmem_layout_sfb(
tiled_mma,
self.mma_tiler,
self.sf_vec_size,
cute.slice_(sfb1_smem_layout_staged, (None, None, None, 0)),
)
tCtSFB1 = cute.make_tensor(sfb1_tmem_ptr, tCtSFB_layout)
sfb2_tmem_ptr = cute.recast_ptr(
sf_base_ptr
+ tcgen05.find_tmem_tensor_col_offset(tCtSFA)
+ tcgen05.find_tmem_tensor_col_offset(tCtSFB1),
dtype=self.sf_dtype,
)
tCtSFB2 = cute.make_tensor(sfb2_tmem_ptr, tCtSFB_layout)
tiled_copy_s2t_sfa, tCsSFA_compact_s2t, tCtSFA_compact_s2t = (
Sm100BlockScaledDenseGemmKernel.mainloop_s2t_copy_and_partition(self, sSFA, tCtSFA)
)
tiled_copy_s2t_sfb1, tCsSFB1_compact_s2t, tCtSFB1_compact_s2t = (
Sm100BlockScaledDenseGemmKernel.mainloop_s2t_copy_and_partition(self, sSFB1, tCtSFB1)
)
tiled_copy_s2t_sfb2, tCsSFB2_compact_s2t, tCtSFB2_compact_s2t = (
Sm100BlockScaledDenseGemmKernel.mainloop_s2t_copy_and_partition(self, sSFB2, tCtSFB2)
)
ab_consumer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Consumer, self.num_ab_stage
)
acc_producer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Producer, self.num_acc_stage
)
peek_ab_full_status = ab_pipeline.consumer_try_wait(ab_consumer_state)
tCtSFB1_mma = tCtSFB1
tCtSFB2_mma = tCtSFB2
if cutlass.const_expr(self.cta_tile_shape_mnk[1] == 64):
offset = cutlass.Int32((mma_tile_coord_mnl[1] % 2) * 2)
shift_base = sf_base_ptr + tcgen05.find_tmem_tensor_col_offset(tCtSFA) + offset
tCtSFB1_mma = cute.make_tensor(
cute.recast_ptr(shift_base, dtype=self.sf_dtype), tCtSFB_layout
)
shift_base_2 = (
sf_base_ptr
+ tcgen05.find_tmem_tensor_col_offset(tCtSFA)
+ tcgen05.find_tmem_tensor_col_offset(tCtSFB1)
+ offset
)
tCtSFB2_mma = cute.make_tensor(
cute.recast_ptr(shift_base_2, dtype=self.sf_dtype), tCtSFB_layout
)
for k_block_idx in range(k_block_cnt):
ab_pipeline.consumer_wait(ab_consumer_state, peek_ab_full_status)
s2t_stage_coord = (None, None, None, None, ab_consumer_state.index)
cute.copy(
tiled_copy_s2t_sfa,
tCsSFA_compact_s2t[s2t_stage_coord],
tCtSFA_compact_s2t,
)
cute.copy(
tiled_copy_s2t_sfb1,
tCsSFB1_compact_s2t[s2t_stage_coord],
tCtSFB1_compact_s2t,
)
cute.copy(
tiled_copy_s2t_sfb2,
tCsSFB2_compact_s2t[s2t_stage_coord],
tCtSFB2_compact_s2t,
)
num_kphases = cute.size(tCrA, mode=[2])
for kphase_idx in cutlass.range(num_kphases, unroll_full=True):
kphase_coord = (None, None, kphase_idx, ab_consumer_state.index)
sf_kphase_coord = (None, None, kphase_idx)
tiled_mma.set(tcgen05.Field.SFA, tCtSFA[sf_kphase_coord].iterator)
first = k_block_idx == 0 and kphase_idx == 0
tiled_mma.set(tcgen05.Field.SFB, tCtSFB1_mma[sf_kphase_coord].iterator)
tiled_mma.set(tcgen05.Field.ACCUMULATE, not first)
cute.gemm(
tiled_mma,
tCtAcc1,
tCrA[kphase_coord],
tCrB1[kphase_coord],
tCtAcc1,
)
tiled_mma.set(tcgen05.Field.SFB, tCtSFB2_mma[sf_kphase_coord].iterator)
tiled_mma.set(tcgen05.Field.ACCUMULATE, not first)
cute.gemm(
tiled_mma,
tCtAcc2,
tCrA[kphase_coord],
tCrB2[kphase_coord],
tCtAcc2,
)
ab_pipeline.consumer_release(ab_consumer_state)
ab_consumer_state.advance()
if ab_consumer_state.count < k_block_cnt:
peek_ab_full_status = ab_pipeline.consumer_try_wait(ab_consumer_state)
acc_pipeline.producer_commit(acc_producer_state)
elif warp_idx in self.epilog_warp_id:
tmem.allocate(self.num_tmem_alloc_cols)
tmem.wait_for_alloc()
base_ptr = tmem.retrieve_ptr(self.acc_dtype)
tCtAcc1 = cute.make_tensor(base_ptr, tCtAcc_fake.layout)
base_ptr_2 = base_ptr + tcgen05.find_tmem_tensor_col_offset(tCtAcc1)
tCtAcc2 = cute.make_tensor(base_ptr_2, tCtAcc_fake.layout)
acc_consumer_state = pipeline.make_pipeline_state(
pipeline.PipelineUserType.Consumer, self.num_acc_stage
)
acc_pipeline.consumer_wait(acc_consumer_state)
tiled_copy_t2r_1, tTR_tAcc_1, tTR_rAcc_1 = Sm100BlockScaledDenseGemmKernel.epilog_tmem_copy_and_partition(
self, tidx, tCtAcc1, tCgC, epi_tile
)
tTR_rC = cute.make_fragment(tTR_rAcc_1.shape, self.c_dtype)
tiled_copy_r2s, tRS_rC, tRS_sC = Sm100BlockScaledDenseGemmKernel.epilog_smem_copy_and_partition(
self, tiled_copy_t2r_1, tTR_rC, tidx, sC
)
tma_atom_c, bSG_sC, bSG_gC = Sm100BlockScaledDenseGemmKernel.epilog_gmem_copy_and_partition(
self, tidx, tma_atom_c, tCgC, epi_tile, sC
)
bSG_gC = bSG_gC[(None, None, None, *mma_tile_coord_mnl)]
tiled_copy_t2r_2, tTR_tAcc_2, tTR_rAcc_2 = Sm100BlockScaledDenseGemmKernel.epilog_tmem_copy_and_partition(
self, tidx, tCtAcc2, tCgC, epi_tile
)
tTR_tAcc_1 = cute.group_modes(tTR_tAcc_1, 3, cute.rank(tTR_tAcc_1))
tTR_tAcc_2 = cute.group_modes(tTR_tAcc_2, 3, cute.rank(tTR_tAcc_2))
bSG_gC = cute.group_modes(bSG_gC, 1, cute.rank(bSG_gC))
subtile_cnt = cute.size(tTR_tAcc_1.shape, mode=[3])
one = cutlass.Float32(1.0)
zero = cutlass.Float32(0.0)
batch = 1 if _DEBUG_FORCE_EPILOGUE_SYNC else self.num_c_stage
tail = subtile_cnt % batch
full = subtile_cnt - tail
for base in range(0, full, batch):
for off in range(batch):
subtile_idx = base + off
tTR_tAcc_mn_1 = tTR_tAcc_1[(None, None, None, subtile_idx)]
cute.copy(tiled_copy_t2r_1, tTR_tAcc_mn_1, tTR_rAcc_1)
tTR_tAcc_mn_2 = tTR_tAcc_2[(None, None, None, subtile_idx)]
cute.copy(tiled_copy_t2r_2, tTR_tAcc_mn_2, tTR_rAcc_2)
acc1 = tTR_rAcc_1.load()
acc2 = tTR_rAcc_2.load()
den = one + cmath.exp(zero - acc1, fastmath=True)
out = (acc1 * acc2) / den
tRS_rC.store(out.to(self.c_dtype))
cute.copy(
tiled_copy_r2s,
tRS_rC,
tRS_sC[(None, None, None, subtile_idx)],
)
cute.arch.fence_view_async_shared()
self.epilog_sync_barrier.sync()
if warp_idx == self.epilog_warp_id[0]:
for off in range(batch):
store_idx = base + off
cute.copy(
tma_atom_c,
bSG_sC[(None, store_idx)],
bSG_gC[(None, store_idx)],
)
cute.arch.cp_async_bulk_wait_group(0)
self.epilog_sync_barrier.sync()
if tail != 0:
base = full
for off in range(tail):
subtile_idx = base + off
tTR_tAcc_mn_1 = tTR_tAcc_1[(None, None, None, subtile_idx)]
cute.copy(tiled_copy_t2r_1, tTR_tAcc_mn_1, tTR_rAcc_1)
tTR_tAcc_mn_2 = tTR_tAcc_2[(None, None, None, subtile_idx)]
cute.copy(tiled_copy_t2r_2, tTR_tAcc_mn_2, tTR_rAcc_2)
acc1 = tTR_rAcc_1.load()
acc2 = tTR_rAcc_2.load()
den = one + cmath.exp(zero - acc1, fastmath=True)
out = (acc1 * acc2) / den
tRS_rC.store(out.to(self.c_dtype))
cute.copy(
tiled_copy_r2s,
tRS_rC,
tRS_sC[(None, None, None, subtile_idx)],
)
cute.arch.fence_view_async_shared()
self.epilog_sync_barrier.sync()
if warp_idx == self.epilog_warp_id[0]:
for off in range(tail):
store_idx = base + off
cute.copy(
tma_atom_c,
bSG_sC[(None, store_idx)],
bSG_gC[(None, store_idx)],
)
cute.arch.cp_async_bulk_wait_group(0)
self.epilog_sync_barrier.sync()
tmem.relinquish_alloc_permit()
tmem.free(base_ptr)
@staticmethod
def _compute_stages(
tiled_mma: cute.TiledMma,
mma_tiler_mnk: Tuple[int, int, int],
a_dtype: Type[cutlass.Numeric],
b_dtype: Type[cutlass.Numeric],
epi_tile: cute.Tile,
c_dtype: Type[cutlass.Numeric],
c_layout: utils.LayoutEnum,
sf_dtype: Type[cutlass.Numeric],
sf_vec_size: int,
smem_capacity: int,
occupancy: int,
) -> Tuple[int, int, int]:
num_acc_stage = 1
num_c_stage = 3
a_smem_layout_stage_one = sm100_utils.make_smem_layout_a(
tiled_mma,
mma_tiler_mnk,
a_dtype,
1,
)
b_smem_layout_staged_one = sm100_utils.make_smem_layout_b(
tiled_mma,
mma_tiler_mnk,
b_dtype,
1,
)
sfa_smem_layout_staged_one = blockscaled_utils.make_smem_layout_sfa(
tiled_mma,
mma_tiler_mnk,
sf_vec_size,
1,
)
sfb_smem_layout_staged_one = blockscaled_utils.make_smem_layout_sfb(
tiled_mma,
mma_tiler_mnk,
sf_vec_size,
1,
)
c_smem_layout_staged_one = sm100_utils.make_smem_layout_epi(
c_dtype,
c_layout,
epi_tile,
1,
)
ab_bytes_per_stage = (
cute.size_in_bytes(a_dtype, a_smem_layout_stage_one)
+ 2 * cute.size_in_bytes(b_dtype, b_smem_layout_staged_one)
+ cute.size_in_bytes(sf_dtype, sfa_smem_layout_staged_one)
+ 2 * cute.size_in_bytes(sf_dtype, sfb_smem_layout_staged_one)
)
mbar_helpers_bytes = 1024
c_bytes_per_stage = cute.size_in_bytes(c_dtype, c_smem_layout_staged_one)
c_bytes = c_bytes_per_stage * num_c_stage
num_ab_stage = (smem_capacity - (mbar_helpers_bytes + c_bytes)) // ab_bytes_per_stage
num_c_stage += (
smem_capacity - ab_bytes_per_stage * num_ab_stage - (mbar_helpers_bytes + c_bytes)
) // (c_bytes_per_stage)
return num_acc_stage, num_ab_stage, num_c_stage
_GEMM_KERNEL_CACHE = {}
_DUAL_GEMM_KERNEL_CACHE = {}
def _get_buf(tag: str, shape, stride, device, dtype: torch.dtype) -> torch.Tensor:
return torch.empty_strided(shape, stride, device=device, dtype=dtype)
def _compile_gemm_kernel(out_dtype: Type[cutlass.Numeric], mma_tiler_mn, cluster_shape_mn):
key = (out_dtype, mma_tiler_mn, cluster_shape_mn)
cached = _GEMM_KERNEL_CACHE.get(key)
if cached is not None:
return cached
target_arch = os.environ.get("CUTE_DSL_ARCH", "sm_100a")
cutlass.cuda.initialize_cuda_context()
a_ptr = make_ptr(ab_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
b_ptr = make_ptr(ab_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
c_ptr = make_ptr(out_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
sfa_ptr = make_ptr(sf_dtype, 0, cute.AddressSpace.gmem, assumed_align=32)
sfb_ptr = make_ptr(sf_dtype, 0, cute.AddressSpace.gmem, assumed_align=32)
kernel = Sm100BlockScaledDenseGemmKernel(mma_tiler_mn, cluster_shape_mn, c_dtype=out_dtype)
compiled = cute.compile[cute.GPUArch(target_arch)](
kernel, a_ptr, b_ptr, sfa_ptr, sfb_ptr, c_ptr, 0, 0, 0, 0
)
_GEMM_KERNEL_CACHE[key] = compiled
return compiled
def _compile_dual_gemm_kernel(out_dtype: Type[cutlass.Numeric], mma_tiler_mn, cluster_shape_mn):
key = (out_dtype, mma_tiler_mn, cluster_shape_mn)
cached = _DUAL_GEMM_KERNEL_CACHE.get(key)
if cached is not None:
return cached
target_arch = os.environ.get("CUTE_DSL_ARCH", "sm_100a")
cutlass.cuda.initialize_cuda_context()
a_ptr = make_ptr(ab_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
b1_ptr = make_ptr(ab_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
b2_ptr = make_ptr(ab_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
c_ptr = make_ptr(out_dtype, 0, cute.AddressSpace.gmem, assumed_align=16)
sfa_ptr = make_ptr(sf_dtype, 0, cute.AddressSpace.gmem, assumed_align=32)
sfb1_ptr = make_ptr(sf_dtype, 0, cute.AddressSpace.gmem, assumed_align=32)
sfb2_ptr = make_ptr(sf_dtype, 0, cute.AddressSpace.gmem, assumed_align=32)
kernel = Sm100BlockScaledDualGemmKernel(mma_tiler_mn, cluster_shape_mn, c_dtype=out_dtype)
compiled = cute.compile[cute.GPUArch(target_arch)](
kernel,
a_ptr,
b1_ptr,
b2_ptr,
sfa_ptr,
sfb1_ptr,
sfb2_ptr,
c_ptr,
0,
0,
0,
0,
)
_DUAL_GEMM_KERNEL_CACHE[key] = compiled
return compiled
def _run_gemm(compiled, out_dtype, a, b, sfa_p, sfb_p, out):
m, k_half, l = a.shape
n, _, _ = b.shape
k = k_half * 2
compiled(
make_ptr(ab_dtype, a.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
make_ptr(ab_dtype, b.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
make_ptr(sf_dtype, sfa_p.data_ptr(), cute.AddressSpace.gmem, assumed_align=32),
make_ptr(sf_dtype, sfb_p.data_ptr(), cute.AddressSpace.gmem, assumed_align=32),
make_ptr(out_dtype, out.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
m,
n,
k,
l,
)
def _run_dual_gemm(compiled, out_dtype, a, b1, b2, sfa_p, sfb1_p, sfb2_p, out):
m, k_half, l = a.shape
n, _, _ = b1.shape
k = k_half * 2
compiled(
make_ptr(ab_dtype, a.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
make_ptr(ab_dtype, b1.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
make_ptr(ab_dtype, b2.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
make_ptr(sf_dtype, sfa_p.data_ptr(), cute.AddressSpace.gmem, assumed_align=32),
make_ptr(sf_dtype, sfb1_p.data_ptr(), cute.AddressSpace.gmem, assumed_align=32),
make_ptr(sf_dtype, sfb2_p.data_ptr(), cute.AddressSpace.gmem, assumed_align=32),
make_ptr(out_dtype, out.data_ptr(), cute.AddressSpace.gmem, assumed_align=16),
m,
n,
k,
l,
)
def _is_rank_shape(m: int, n: int, k: int, l: int) -> bool:
if l != 1:
return False
if m == 256 and n == 4096 and k == 7168:
return True
if m == 512 and n == 4096 and k == 7168:
return True
if m == 256 and n == 3072 and k == 4096:
return True
if m == 512 and n == 3072 and k == 4096:
return True
if m == 512 and n == 3072 and k == 7168:
return True
return False
_RANKED_CLUSTER_SHAPE = {
(256, 4096, 7168): (2, 2),
(512, 4096, 7168): (2, 2),
(256, 3072, 4096): (2, 2),
(512, 3072, 4096): (2, 2),
(512, 3072, 7168): (2, 2),
}
_RANKED_MMA_TILER_MN = {
(256, 4096, 7168): (128, 64),
(512, 4096, 7168): (128, 64),
(256, 3072, 4096): (128, 64),
(512, 3072, 4096): (128, 64),
(512, 3072, 7168): (128, 64),
}
def _get_rank_dual_kernel(m: int, n: int, k: int):
mma_tiler_mn = _RANKED_MMA_TILER_MN.get((m, n, k), (128, 64))
cluster_shape_mn = _RANKED_CLUSTER_SHAPE.get((m, n, k))
if cluster_shape_mn is None:
cluster_shape_mn = (2, 2)
out_dtype = cutlass.Float16
return _compile_dual_gemm_kernel(out_dtype, mma_tiler_mn, cluster_shape_mn), out_dtype
def _get_rank_gemm_kernel(out_dtype: Type[cutlass.Numeric], m: int):
mma_tiler_mn = (128, 64)
if m == 256:
cluster_shape_mn = (2, 2)
else:
cluster_shape_mn = (4, 1)
return _compile_gemm_kernel(out_dtype, mma_tiler_mn, cluster_shape_mn), out_dtype
def _get_safe_gemm_kernel(out_dtype: Type[cutlass.Numeric]):
mma_tiler_mn = (128, 64)
cluster_shape_mn = (1, 1)
return _compile_gemm_kernel(out_dtype, mma_tiler_mn, cluster_shape_mn), out_dtype
def custom_kernel(data):
a, b1, b2, _sfa, _sfb1, _sfb2, sfa_p, sfb1_p, sfb2_p, c = data
m, k_half, l = a.shape
n, _, _ = b1.shape
k = k_half * 2
mi = int(m)
ni = int(n)
ki = int(k)
li = int(l)
if _is_rank_shape(mi, ni, ki, li):
compiled, out_dtype = _get_rank_dual_kernel(mi, ni, ki)
_run_dual_gemm(compiled, out_dtype, a, b1, b2, sfa_p, sfb1_p, sfb2_p, c)
return c
else:
out_dtype = cutlass.Float32
g1 = _get_buf("g1", c.shape, c.stride(), c.device, torch.float32)
g2 = _get_buf("g2", c.shape, c.stride(), c.device, torch.float32)
compiled, out_dtype = _get_safe_gemm_kernel(out_dtype)
_run_gemm(compiled, out_dtype, a, b1, sfa_p, sfb1_p, g1)
_run_gemm(compiled, out_dtype, a, b2, sfa_p, sfb2_p, g2)
F.silu(g1, inplace=True)
g1.mul_(g2)
c.copy_(g1)
del g1, g2
torch.cuda.empty_cache()
return c
__all__ = ["custom_kernel"]
scrolls · 2227 lines total
Source code from GPU Mode and the KernelBot dataset · June 9 Researcher Reciprocity License v1.0
Changes from previous submission
Against this author's previous submission submission 372503.
⋯ 1009 unchanged linesself.occupancy = 1self.smem_capacity = utils.get_smem_capacity_in_bytes("sm_100")- self.num_tmem_alloc_cols = 256+ if mma_tiler_mn == (128, 64):+ self.num_tmem_alloc_cols = 256+ else:+ self.num_tmem_alloc_cols = 512self.tmem_alloc_barrier = pipeline.NamedBarrier(barrier_id=2,⋯ 878 unchanged lineszero = cutlass.Float32(0.0)batch = 1 if _DEBUG_FORCE_EPILOGUE_SYNC else self.num_c_stagetail = subtile_cnt % batch- for subtile_idx in range(subtile_cnt):- tTR_tAcc_mn_1 = tTR_tAcc_1[(None, None, None, subtile_idx)]- cute.copy(tiled_copy_t2r_1, tTR_tAcc_mn_1, tTR_rAcc_1)- tTR_tAcc_mn_2 = tTR_tAcc_2[(None, None, None, subtile_idx)]- cute.copy(tiled_copy_t2r_2, tTR_tAcc_mn_2, tTR_rAcc_2)+ full = subtile_cnt - tail+ for base in range(0, full, batch):+ for off in range(batch):+ subtile_idx = base + off+ tTR_tAcc_mn_1 = tTR_tAcc_1[(None, None, None, subtile_idx)]+ cute.copy(tiled_copy_t2r_1, tTR_tAcc_mn_1, tTR_rAcc_1)+ tTR_tAcc_mn_2 = tTR_tAcc_2[(None, None, None, subtile_idx)]+ cute.copy(tiled_copy_t2r_2, tTR_tAcc_mn_2, tTR_rAcc_2)- acc1 = tTR_rAcc_1.load()- acc2 = tTR_rAcc_2.load()- den = one + cmath.exp(zero - acc1, fastmath=True)- out = (acc1 * acc2) / den- tRS_rC.store(out.to(self.c_dtype))- cute.copy(tiled_copy_r2s, tRS_rC, tRS_sC[(None, None, None, subtile_idx)])- if (subtile_idx + 1) % batch == 0:- cute.arch.fence_view_async_shared()- self.epilog_sync_barrier.sync()- if warp_idx == self.epilog_warp_id[0]:- for off in range(batch):- store_idx = subtile_idx - (batch - 1 - off)- cute.copy(- tma_atom_c,- bSG_sC[(None, store_idx)],- bSG_gC[(None, store_idx)],- )+ acc1 = tTR_rAcc_1.load()+ acc2 = tTR_rAcc_2.load()+ den = one + cmath.exp(zero - acc1, fastmath=True)+ out = (acc1 * acc2) / den+ tRS_rC.store(out.to(self.c_dtype))+ cute.copy(+ tiled_copy_r2s,+ tRS_rC,+ tRS_sC[(None, None, None, subtile_idx)],+ )- if tail != 0:cute.arch.fence_view_async_shared()self.epilog_sync_barrier.sync()if warp_idx == self.epilog_warp_id[0]:- base = subtile_cnt - tailfor off in range(batch):- if off < tail:- store_idx = base + off- cute.copy(- tma_atom_c,- bSG_sC[(None, store_idx)],- bSG_gC[(None, store_idx)],- )+ store_idx = base + off+ cute.copy(+ tma_atom_c,+ bSG_sC[(None, store_idx)],+ bSG_gC[(None, store_idx)],+ )+ cute.arch.cp_async_bulk_wait_group(0)+ self.epilog_sync_barrier.sync()+ if tail != 0:+ base = full+ for off in range(tail):+ subtile_idx = base + off+ tTR_tAcc_mn_1 = tTR_tAcc_1[(None, None, None, subtile_idx)]+ cute.copy(tiled_copy_t2r_1, tTR_tAcc_mn_1, tTR_rAcc_1)+ tTR_tAcc_mn_2 = tTR_tAcc_2[(None, None, None, subtile_idx)]+ cute.copy(tiled_copy_t2r_2, tTR_tAcc_mn_2, tTR_rAcc_2)++ acc1 = tTR_rAcc_1.load()+ acc2 = tTR_rAcc_2.load()+ den = one + cmath.exp(zero - acc1, fastmath=True)+ out = (acc1 * acc2) / den+ tRS_rC.store(out.to(self.c_dtype))+ cute.copy(+ tiled_copy_r2s,+ tRS_rC,+ tRS_sC[(None, None, None, subtile_idx)],+ )++ cute.arch.fence_view_async_shared()+ self.epilog_sync_barrier.sync()+ if warp_idx == self.epilog_warp_id[0]:+ for off in range(tail):+ store_idx = base + off+ cute.copy(+ tma_atom_c,+ bSG_sC[(None, store_idx)],+ bSG_gC[(None, store_idx)],+ )+ cute.arch.cp_async_bulk_wait_group(0)+ self.epilog_sync_barrier.sync()+tmem.relinquish_alloc_permit()tmem.free(base_ptr)⋯ 171 unchanged linesreturn Trueif m == 256 and n == 3072 and k == 4096:return True+ if m == 512 and n == 3072 and k == 4096:+ return Trueif m == 512 and n == 3072 and k == 7168:return Truereturn False⋯ 3 unchanged lines(256, 4096, 7168): (2, 2),(512, 4096, 7168): (2, 2),(256, 3072, 4096): (2, 2),+ (512, 3072, 4096): (2, 2),(512, 3072, 7168): (2, 2),}+ _RANKED_MMA_TILER_MN = {+ (256, 4096, 7168): (128, 64),+ (512, 4096, 7168): (128, 64),+ (256, 3072, 4096): (128, 64),+ (512, 3072, 4096): (128, 64),+ (512, 3072, 7168): (128, 64),+ }+def _get_rank_dual_kernel(m: int, n: int, k: int):- mma_tiler_mn = (128, 64)+ mma_tiler_mn = _RANKED_MMA_TILER_MN.get((m, n, k), (128, 64))cluster_shape_mn = _RANKED_CLUSTER_SHAPE.get((m, n, k))if cluster_shape_mn is None:cluster_shape_mn = (2, 2)
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