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Decoder complete layer

43 eligible runs
decoder

Complete decoder transformer layer combining pre-norm RMSNorm, GQA self-attention with RoPE (16 query heads, 4 KV heads), residual connection, pre-norm RMSNorm for cross-attention, GQA cross-attention (16 query heads, 16 KV heads), residual connection, pre-norm RMSNorm for MLP, SiLU-gated MLP (8192 intermediate), and final residual. This represents the full decoder layer that repeats 18 times.

Fastest reported
348.0µsmean · 64% of SOL
RIAC as wellLicense unknown · unknown

Reported evidence · last observed 2026-08-11. Reported by source; not independently reproduced. No public source. License unknown.

No public sourceRun detail →

Current records

Workloadsuite of 16 cases · mean latencyhead_dim = 128 · hidden_size = 2048 · cross_head_dim = 128 · self_attn_q_dim = 2048 · cross_attn_q_dim = 2048 · self_attn_kv_dim = 512 · cross_attn_kv_dim = 2048 · cross_hidden_size = 1024 · intermediate_size = 8192 · num_attention_heads = 16 · num_key_value_heads = 4 · cross_num_attention_heads = 16 · cross_num_key_value_heads = 1616 cases

Not measured on H100 for this workload. Challenges →

Source-native comparison · GPU NVIDIA B200 · Workload suite of 16 cases · mean latency · Protocol SOL-ExecBench evaluation stack v1.1 · mean · 33 results · last observed 2026-08-23Record history →
#
Implementation
Latency
vs #1
Trust
Observed
1
348.0µs64% SOL
1.00×
Reported · license unknown · no source
2026-08-11

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
2
358.5µs64% SOL
1.03×
Reported · license unknown · no source
2026-08-22

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
3
386.7µs61% SOL
1.11×
Reported · license unknown · no source
2026-07-10

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
4
396.3µs60% SOL
1.14×
Reported · license unknown · no source
2026-07-10

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
5
397.4µs60% SOL
1.14×
Reported · license unknown · no source
2026-08-15

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
6
398.1µs60% SOL
1.14×
Reported · license unknown · no source
2026-08-15

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
7
398.3µs60% SOL
1.14×
Reported · license unknown · no source
2026-08-15

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
8
408.8µs59% SOL
1.17×
Reported · license unknown · no source
2026-08-04

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
9
410.6µs59% SOL
1.18×
Reported · license unknown · no source
2026-07-10

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
10
412.2µs59% SOL
1.18×
Reported · license unknown · no source
2026-07-19

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
11
413.9µs59% SOL
1.19×
Reported · license unknown · no source
2026-07-24

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
12
428.9µs58% SOL
1.23×
Reported · license unknown · no source
2026-08-20

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
13
437.8µs57% SOL
1.26×
Reported · license unknown · no source
2026-08-20

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
14
442.7µs56% SOL
1.27×
Reported · license unknown · no source
2026-08-18

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
15
461.5µs56% SOL
1.33×
Reported · license unknown · no source
2026-08-21

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
16
462.4µs55% SOL
1.33×
Reported · license unknown · no source
2026-08-21

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
17
474.6µs53% SOL
1.36×
Reported · license unknown · no source
2026-07-10

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
18
479.6µs53% SOL
1.38×
Reported · license unknown · no source
2026-08-18

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
19
502.3µs52% SOL
1.44×
Reported · license unknown · no source
2026-07-10

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
20
506.9µs51% SOL
1.46×
Reported · license unknown · no source
2026-08-14

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
21
540.4µs50% SOL
1.55×
Reported · license unknown · no source
2026-08-21

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
22
556.6µs49% SOL
1.60×
Reported · license unknown · no source
2026-08-23

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
23
558.5µs49% SOL
1.60×
Reported · license unknown · no source
2026-08-18

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
24
563.5µs48% SOL
1.62×
Reported · license unknown · no source
2026-08-16

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
25
563.9µs48% SOL
1.62×
Reported · license unknown · no source
2026-08-17

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
26
587.9µs47% SOL
1.69×
Reported · license unknown · no source
2026-08-22

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
27
590.6µs47% SOL
1.70×
Reported · license unknown · no source
2026-08-18

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
28
645.4µs45% SOL
1.85×
Reported · license unknown · no source
2026-07-24

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
29
782.8µs38% SOL
2.25×
Reported · license unknown · no source
2026-07-10

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
30
835.6µs36% SOL
2.40×
Reported · license unknown · no source
2026-07-26

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
31
851.4µs35% SOL
2.45×
Reported · license unknown · no source
2026-07-26

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
32
1.96ms17% SOL
5.64×
Reported · license unknown · no source
2026-08-13

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
33
3.67ms12% SOL
10.53×
Reported · license unknown · no source
2026-08-14

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →

Implementations

Implementation
Runtime
Best latency
Evidence
Availability
unknown
351.3µs
1.01×
Reported
license unknown · no source
unknown
358.5µs
1.03×
Reported
license unknown · no source
unknown
364.9µs
1.05×
Reported
license unknown · no source
unknown
397.4µs
1.14×
Reported
license unknown · no source
unknown
398.1µs
1.14×
Reported
license unknown · no source
unknown
398.3µs
1.14×
Reported
license unknown · no source
unknown
408.8µs
1.17×
Reported
license unknown · no source
unknown
413.9µs
1.19×
Reported
license unknown · no source
Show all 43 implementations ›
unknown
412.2µs
1.18×
Reported
license unknown · no source
unknown
428.9µs
1.23×
Reported
license unknown · no source
unknown
453.3µs
1.30×
Reported
license unknown · no source
unknown
486.4µs
1.40×
Reported
license unknown · no source
unknown
625.7µs
1.80×
Reported
license unknown · no source
unknown
410.6µs
1.18×
Reported
license unknown · no source
unknown
415.5µs
1.19×
Reported
license unknown · no source
unknown
437.8µs
1.26×
Reported
license unknown · no source
unknown
442.7µs
1.27×
Reported
license unknown · no source
unknown
461.5µs
1.33×
Reported
license unknown · no source
unknown
462.4µs
1.33×
Reported
license unknown · no source
unknown
474.6µs
1.36×
Reported
license unknown · no source
unknown
479.6µs
1.38×
Reported
license unknown · no source
unknown
502.3µs
1.44×
Reported
license unknown · no source
unknown
506.9µs
1.46×
Reported
license unknown · no source
unknown
540.4µs
1.55×
Reported
license unknown · no source
unknown
556.6µs
1.60×
Reported
license unknown · no source
unknown
558.5µs
1.60×
Reported
license unknown · no source
unknown
563.9µs
1.62×
Reported
license unknown · no source
unknown
563.5µs
1.62×
Reported
license unknown · no source
unknown
587.9µs
1.69×
Reported
license unknown · no source
unknown
577.3µs
1.66×
Reported
license unknown · no source
unknown
590.6µs
1.70×
Reported
license unknown · no source
unknown
645.4µs
1.85×
Reported
license unknown · no source
unknown
782.8µs
2.25×
Reported
license unknown · no source
unknown
835.6µs
2.40×
Reported
license unknown · no source
unknown
851.4µs
2.45×
Reported
license unknown · no source
unknown
1.09ms
3.13×
Reported
license unknown · no source
unknown
1.63ms
4.69×
Reported
license unknown · no source
unknown
1.72ms
4.94×
Reported
license unknown · no source
unknown
1.96ms
5.64×
Reported
license unknown · no source
unknown
3.67ms
10.53×
Reported
license unknown · no source
unknown
348.0µs
1.00×
Reported
license unknown · no source
unknown
386.7µs
1.11×
Reported
license unknown · no source
unknown
396.3µs
1.14×
Reported
license unknown · no source

Semantics

Inputs and outputs
hidden_statesbf16 [batch_size, seq_len, hidden_size]
encoder_hidden_statesbf16 [batch_size, encoder_seq_len, cross_hidden_size]
self_attn_norm_weightbf16 [hidden_size]
self_attn_q_weightbf16 [self_attn_q_dim, hidden_size]
self_attn_k_weightbf16 [self_attn_kv_dim, hidden_size]
self_attn_v_weightbf16 [self_attn_kv_dim, hidden_size]
self_attn_o_weightbf16 [hidden_size, self_attn_q_dim]
cross_attn_norm_weightbf16 [hidden_size]
cross_attn_q_weightbf16 [cross_attn_q_dim, hidden_size]
cross_attn_k_weightbf16 [cross_attn_kv_dim, cross_hidden_size]
cross_attn_v_weightbf16 [cross_attn_kv_dim, cross_hidden_size]
cross_attn_o_weightbf16 [hidden_size, cross_attn_q_dim]
mlp_norm_weightbf16 [hidden_size]
mlp_gate_weightbf16 [intermediate_size, hidden_size]
mlp_up_weightbf16 [intermediate_size, hidden_size]
mlp_down_weightbf16 [hidden_size, intermediate_size]
norm_epsfp32 scalar
rope_thetafp32 scalar
outputbf16 [batch_size, seq_len, hidden_size]
Axes and behavior
seq_lenvariable
head_dimconstant = 128
batch_sizevariable
hidden_sizeconstant = 2048
cross_head_dimconstant = 128
encoder_seq_lenvariable
self_attn_q_dimself_attn_q_dim = num_attention_heads * head_dim
cross_attn_q_dimcross_attn_q_dim = cross_num_attention_heads * cross_head_dim
self_attn_kv_dimself_attn_kv_dim = num_key_value_heads * head_dim
cross_attn_kv_dimcross_attn_kv_dim = cross_num_key_value_heads * cross_head_dim
cross_hidden_sizeconstant = 1024
intermediate_sizeconstant = 8192
num_attention_headsconstant = 16
num_key_value_headsconstant = 4
cross_num_attention_headsconstant = 16
cross_num_key_value_headsconstant = 16
determinismunspecified
constraintsNo mutation or aliasing
Identity
alias062_decoder_complete_layermodelcanary-qwen-2-5bsha25679eba495ffdf…
Sources: NVIDIA SOL-ExecBench (2026-08-23)last observed 2026-08-23How records are decidedJSON