submission 99219
Petr_Rocoss · python · License unknown
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No package. Vendor the mirrored source: 155 lines, June 9 Researcher Reciprocity License v1.0.
submission_production.py
curl "https://kernelindex.com/api/v1/implementations/kernelbot-conv2d-v2-99219?include=source"interfacepython
Compatibility
measured onNVIDIA L4
declared hardwareNVIDIA L4
architecturessm_89
dtypesfp32
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 digestsha256:46d8d40f28463fdb1d2c04823ece117d5391795c2bdc0ac2a142a2b9f0034887
license declaredunknown
license concludedunknown
authorsPetr_Rocoss
imported2026-08-15
Techniques
Extracted from the mirrored source by pattern, never inferred. Each row cites its line.
autotune
@triton.autotune(num-warps = 8
triton.Config({'BLOCK_H': 8, 'BLOCK_W': 256}, num_warps=8, num_stages=7),stages = 7
triton.Config({'BLOCK_H': 8, 'BLOCK_W': 256}, num_warps=8, num_stages=7),Kernel source
submission_production.py155 lines
import torch
import triton
import triton.language as tl
@triton.autotune(
configs=[
# === H100/B200 Hopper Architecture ===
# Максимальный prefetch (num_stages=7) для HBM3
triton.Config({'BLOCK_H': 8, 'BLOCK_W': 256}, num_warps=8, num_stages=7),
triton.Config({'BLOCK_H': 16, 'BLOCK_W': 128}, num_warps=8, num_stages=6),
triton.Config({'BLOCK_H': 8, 'BLOCK_W': 128}, num_warps=8, num_stages=6),
# === A100 Ampere ===
triton.Config({'BLOCK_H': 16, 'BLOCK_W': 64}, num_warps=8, num_stages=5),
triton.Config({'BLOCK_H': 4, 'BLOCK_W': 256}, num_warps=8, num_stages=5),
# === L4 / Balanced ===
triton.Config({'BLOCK_H': 4, 'BLOCK_W': 128}, num_warps=4, num_stages=4),
triton.Config({'BLOCK_H': 8, 'BLOCK_W': 64}, num_warps=4, num_stages=4),
# === Fallback для малых размеров ===
triton.Config({'BLOCK_H': 2, 'BLOCK_W': 64}, num_warps=4, num_stages=3),
],
key=['W_OUT', 'H_OUT', 'C_IN', 'K'],
)
@triton.jit
def conv2d_kernel_ultimate(
input_ptr, weight_ptr, output_ptr,
stride_in_n, stride_in_c, stride_in_h, stride_in_w,
stride_w_out, stride_w_in, stride_w_h, stride_w_w,
stride_out_n, stride_out_c, stride_out_h, stride_out_w,
H_IN, W_IN, H_OUT, W_OUT, C_IN, C_OUT, K,
BLOCK_H: tl.constexpr, BLOCK_W: tl.constexpr
):
"""
Ultimate Conv2D Kernel для A100/H100/B200/L4.
Ключевые оптимизации:
1. Incremental pointer updates (избегаем умножений в цикле)
2. Aggressive prefetch через num_stages=6-7
3. 2D tiling с adaptive block sizes
4. Mask hoisting (маски вычисляются один раз)
5. Coalesced memory access через broadcasting
"""
# === 1. Grid Decoding ===
pid_w = tl.program_id(0)
pid_h = tl.program_id(1)
pid_z = tl.program_id(2)
batch_idx = pid_z // C_OUT
out_ch = pid_z % C_OUT
# === 2. Coordinate Generation ===
offs_h = pid_h * BLOCK_H + tl.arange(0, BLOCK_H)
offs_w = pid_w * BLOCK_W + tl.arange(0, BLOCK_W)
# === 3. Mask Hoisting (вычисляем один раз) ===
mask_h = offs_h < H_OUT
mask_w = offs_w < W_OUT
mask_2d = mask_h[:, None] & mask_w[None, :]
# === 4. Base Pointers (2D Broadcasting) ===
# Output [batch, out_ch, h, w]
ptr_out = (output_ptr + batch_idx * stride_out_n + out_ch * stride_out_c +
offs_h[:, None] * stride_out_h + offs_w[None, :] * stride_out_w)
# Input base [batch, ?, h, w]
ptr_in_base = (input_ptr + batch_idx * stride_in_n +
offs_h[:, None] * stride_in_h + offs_w[None, :] * stride_in_w)
# Weight base [out_ch, ?, ?, ?]
ptr_wei_base = weight_ptr + out_ch * stride_w_out
# === 5. Accumulator ===
acc = tl.zeros([BLOCK_H, BLOCK_W], dtype=tl.float32)
# === 6. Main Loop (Pointer Chasing Optimization) ===
# Текущие указатели для каналов
ptr_in_ch = ptr_in_base
ptr_wei_ch = ptr_wei_base
for cin in range(C_IN):
# Локальные указатели для spatial loops
ptr_in_kh = ptr_in_ch
ptr_wei_kh = ptr_wei_ch
for kh in range(K):
# Еще более локальные указатели для kw loop
ptr_in_kw = ptr_in_kh
ptr_wei_kw = ptr_wei_kh
for kw in range(K):
# === A. Load Weight (scalar broadcast) ===
w_val = tl.load(ptr_wei_kw)
# === B. Load Input (vectorized 2D block) ===
in_val = tl.load(ptr_in_kw, mask=mask_2d, other=0.0)
# === C. FMA ===
acc += in_val * w_val
# Increment по ширине (kw)
ptr_in_kw += stride_in_w
ptr_wei_kw += stride_w_w
# Increment по высоте (kh)
ptr_in_kh += stride_in_h
ptr_wei_kh += stride_w_h
# Increment по каналам (cin)
ptr_in_ch += stride_in_c
ptr_wei_ch += stride_w_in
# === 7. Store Result ===
tl.store(ptr_out, acc, mask=mask_2d)
def custom_kernel(data):
"""
Production-ready wrapper для Conv2D kernel.
"""
input_tensor, kernel, output_tensor = data
# Гарантируем contiguous layout для coalesced access
input_tensor = input_tensor.contiguous()
kernel = kernel.contiguous()
# Размеры
batch, c_in, h_in, w_in = input_tensor.shape
c_out, _, k_h, k_w = kernel.shape
h_out = h_in - k_h + 1
w_out = w_in - k_w + 1
# Grid configuration
grid = lambda META: (
triton.cdiv(w_out, META['BLOCK_W']),
triton.cdiv(h_out, META['BLOCK_H']),
batch * c_out
)
# Launch kernel
conv2d_kernel_ultimate[grid](
input_tensor, kernel, output_tensor,
*input_tensor.stride(),
*kernel.stride(),
*output_tensor.stride(),
h_in, w_in, h_out, w_out,
c_in, c_out, k_h,
)
return output_tensor
scrolls · 155 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 99216.
⋯ 3 unchanged lines@triton.autotune(configs=[- # === H100 (Hopper) Ultimate Configs ===- # HBM3 требует агрессивного prefetching (stages=6/7) и широких транзакций.-- # 1. Max Bandwidth: Широкий фронт загрузки (256) + глубокий конвейер+ # === H100/B200 Hopper Architecture ===+ # Максимальный prefetch (num_stages=7) для HBM3triton.Config({'BLOCK_H': 8, 'BLOCK_W': 256}, num_warps=8, num_stages=7),-- # 2. Max Reuse: Большой тайл по высоте для минимизации загрузок весовtriton.Config({'BLOCK_H': 16, 'BLOCK_W': 128}, num_warps=8, num_stages=6),+ triton.Config({'BLOCK_H': 8, 'BLOCK_W': 128}, num_warps=8, num_stages=6),- # 3. Balanced: Универсальная конфигурация для большинства слоев- triton.Config({'BLOCK_H': 16, 'BLOCK_W': 64}, num_warps=8, num_stages=6),+ # === A100 Ampere ===+ triton.Config({'BLOCK_H': 16, 'BLOCK_W': 64}, num_warps=8, num_stages=5),+ triton.Config({'BLOCK_H': 4, 'BLOCK_W': 256}, num_warps=8, num_stages=5),- # 4. Latency Sensitive: Для небольших батчей- triton.Config({'BLOCK_H': 8, 'BLOCK_W': 64}, num_warps=4, num_stages=4),-- # === A100 / Fallback ===- triton.Config({'BLOCK_H': 8, 'BLOCK_W': 128}, num_warps=8, num_stages=5),+ # === L4 / Balanced ===triton.Config({'BLOCK_H': 4, 'BLOCK_W': 128}, num_warps=4, num_stages=4),+ triton.Config({'BLOCK_H': 8, 'BLOCK_W': 64}, num_warps=4, num_stages=4),++ # === Fallback для малых размеров ===+ triton.Config({'BLOCK_H': 2, 'BLOCK_W': 64}, num_warps=4, num_stages=3),],key=['W_OUT', 'H_OUT', 'C_IN', 'K'],)⋯ 7 unchanged linesBLOCK_H: tl.constexpr, BLOCK_W: tl.constexpr):"""- Ultimate Conv2D Kernel for H100/A100.+ Ultimate Conv2D Kernel для A100/H100/B200/L4.- Improvements:- 1. Pure Pointer Chasing: Убраны все умножения (MUL) из внутренних циклов.- Используется только сложение (ADD) для обновления указателей.- 2. Max Stages: Использование до 7 стадий конвейера для скрытия латентности памяти.- 3. Static Masking: Маски вычисляются один раз вне циклов.+ Ключевые оптимизации:+ 1. Incremental pointer updates (избегаем умножений в цикле)+ 2. Aggressive prefetch через num_stages=6-7+ 3. 2D tiling с adaptive block sizes+ 4. Mask hoisting (маски вычисляются один раз)+ 5. Coalesced memory access через broadcasting"""- # --- 1. Setup ---+ # === 1. Grid Decoding ===pid_w = tl.program_id(0)pid_h = tl.program_id(1)pid_z = tl.program_id(2)-+batch_idx = pid_z // C_OUTout_ch = pid_z % C_OUT-- # --- 2. Offsets & Masks ---++ # === 2. Coordinate Generation ===offs_h = pid_h * BLOCK_H + tl.arange(0, BLOCK_H)offs_w = pid_w * BLOCK_W + tl.arange(0, BLOCK_W)-- # Pre-calc masks.- # При stride=1 и padding=0, выходные границы строже входных.++ # === 3. Mask Hoisting (вычисляем один раз) ===mask_h = offs_h < H_OUTmask_w = offs_w < W_OUT- mask_block = mask_h[:, None] & mask_w[None, :]-- # --- 3. Base Pointers Calculation ----- # Output: Broadcasting offsets [BLOCK_H, BLOCK_W]- ptr_out = output_ptr + \- batch_idx * stride_out_n + \- out_ch * stride_out_c + \- (offs_h[:, None] * stride_out_h) + \- (offs_w[None, :] * stride_out_w)+ mask_2d = mask_h[:, None] & mask_w[None, :]- # Input: Base position corresponding to top-left kernel corner- # [BLOCK_H, BLOCK_W] tensor of pointers- ptr_in_base = input_ptr + \- batch_idx * stride_in_n + \- (offs_h[:, None] * stride_in_h) + \- (offs_w[None, :] * stride_in_w)+ # === 4. Base Pointers (2D Broadcasting) ===+ # Output [batch, out_ch, h, w]+ ptr_out = (output_ptr + batch_idx * stride_out_n + out_ch * stride_out_c ++ offs_h[:, None] * stride_out_h + offs_w[None, :] * stride_out_w)- # Weight: Base scalar pointer+ # Input base [batch, ?, h, w]+ ptr_in_base = (input_ptr + batch_idx * stride_in_n ++ offs_h[:, None] * stride_in_h + offs_w[None, :] * stride_in_w)++ # Weight base [out_ch, ?, ?, ?]ptr_wei_base = weight_ptr + out_ch * stride_w_out-- # Accumulator++ # === 5. Accumulator ===acc = tl.zeros([BLOCK_H, BLOCK_W], dtype=tl.float32)-- # --- 4. Optimized Loop Structure (Pointer Chasing) ----- # Инициализируем "бегущие" указатели- curr_in_ch = ptr_in_base- curr_wei_ch = ptr_wei_base-++ # === 6. Main Loop (Pointer Chasing Optimization) ===+ # Текущие указатели для каналов+ ptr_in_ch = ptr_in_base+ ptr_wei_ch = ptr_wei_base+for cin in range(C_IN):- # Сохраняем начало канала, чтобы вернуться к нему (или двигаться от него)- # Используем временные указатели для строк- curr_in_row = curr_in_ch- curr_wei_row = curr_wei_ch+ # Локальные указатели для spatial loops+ ptr_in_kh = ptr_in_ch+ ptr_wei_kh = ptr_wei_chfor kh in range(K):- # Входим в самую горячую часть.- # Копируем указатели для прохода по ширине (KW)- curr_in_ptr = curr_in_row- curr_wei_ptr = curr_wei_row+ # Еще более локальные указатели для kw loop+ ptr_in_kw = ptr_in_kh+ ptr_wei_kw = ptr_wei_khfor kw in range(K):- # 1. Load Weight (Scalar)- # Просто загружаем по текущему указателю- wei_val = tl.load(curr_wei_ptr)+ # === A. Load Weight (scalar broadcast) ===+ w_val = tl.load(ptr_wei_kw)- # 2. Load Input (Vectorized Block)- # Загружаем по текущему указателю (он уже содержит все смещения H/W)- in_val = tl.load(curr_in_ptr, mask=mask_block, other=0.0)+ # === B. Load Input (vectorized 2D block) ===+ in_val = tl.load(ptr_in_kw, mask=mask_2d, other=0.0)- # 3. FMA- acc = acc + in_val * wei_val+ # === C. FMA ===+ acc += in_val * w_val- # 4. Pointer Increment (ALU optimization)- # Вместо умножения (kw+1)*stride, просто добавляем stride.- # Это супер-дешевая операция.- curr_wei_ptr += stride_w_w- curr_in_ptr += stride_in_w-- # Сдвиг вниз по высоте ядра- curr_in_row += stride_in_h- curr_wei_row += stride_w_h+ # Increment по ширине (kw)+ ptr_in_kw += stride_in_w+ ptr_wei_kw += stride_w_w- # Переход к следующему каналу- curr_in_ch += stride_in_c- curr_wei_ch += stride_w_in+ # Increment по высоте (kh)+ ptr_in_kh += stride_in_h+ ptr_wei_kh += stride_w_h++ # Increment по каналам (cin)+ ptr_in_ch += stride_in_c+ ptr_wei_ch += stride_w_in- # --- 5. Store ---- tl.store(ptr_out, acc, mask=mask_block)+ # === 7. Store Result ===+ tl.store(ptr_out, acc, mask=mask_2d)def custom_kernel(data):"""- Ultimate Optimized Wrapper.+ Production-ready wrapper для Conv2D kernel."""input_tensor, kernel, output_tensor = data- # Critical for vectorized loads on H100/A100- if not input_tensor.is_contiguous():- input_tensor = input_tensor.contiguous()- if not kernel.is_contiguous():- kernel = kernel.contiguous()+ # Гарантируем contiguous layout для coalesced access+ input_tensor = input_tensor.contiguous()+ kernel = kernel.contiguous()+ # Размерыbatch, c_in, h_in, w_in = input_tensor.shapec_out, _, k_h, k_w = kernel.shapeh_out = h_in - k_h + 1w_out = w_in - k_w + 1- # Grid definition+ # Grid configurationgrid = lambda META: (triton.cdiv(w_out, META['BLOCK_W']),triton.cdiv(h_out, META['BLOCK_H']),batch * c_out)+ # Launch kernelconv2d_kernel_ultimate[grid](input_tensor, kernel, output_tensor,*input_tensor.stride(),⋯ 4 unchanged lines)return output_tensor+
scrolls · 232 diff lines total
Best evidence level for this revision: reported
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