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v4.1 release update v2. (#2481)

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This commit is contained in:
Junkai-Wu
2025-07-21 22:03:55 -04:00
committed by GitHub
parent 9baa06dd57
commit fd6cfe1ed0
179 changed files with 7878 additions and 1286 deletions
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examples/77_blackwell_fmha/reference/fmha_bwd_reference.hpp
+44 -33
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@@ -33,7 +33,9 @@
#pragma once
#include "cute/tensor.hpp"
#include "collective/fmha_fusion.hpp"
using namespace cutlass::fmha::collective;
/////////////////////////////////////////////////////////////////////////////////////////////////
template<
@@ -61,20 +63,20 @@ void __global__ fmha_bwd_reference_dQ_kernel(
ElementAccumulator softmax_scale = 1.0 / sqrt(ElementAccumulator(size<2>(problem_shape_in)));
for (int idx_L = blockIdx.y; idx_L < size<3>(problem_shape_in); idx_L += gridDim.y) {
for (int idx_L = blockIdx.y; idx_L < size<4>(problem_shape_in); idx_L += gridDim.y) {
auto [problem_shape, offset] = apply_variable_length_offset(
problem_shape_in,
make_coord(_0{}, _0{}, _0{}, idx2crd(idx_L, get<3>(problem_shape_in)))
make_coord(_0{}, _0{}, _0{}, _0{},idx2crd(idx_L, get<4>(problem_shape_in)))
);
// problem_shape = problem_shape_in;
// offset = repeat_like(problem_shape_in, _0{});
auto mQ = domain_offset(select<0,2,3>(offset), mQ_in);
auto mK = domain_offset(select<1,2,3>(offset), mK_in);
auto mV = domain_offset(select<1,2,3>(offset), mV_in);
auto mO = domain_offset(select<0,2,3>(offset), mO_in);
auto mLSE = domain_offset(select<0,3>(offset), mLSE_in);
auto mDO = domain_offset(select<0,2,3>(offset), mDO_in);
auto mDQ = domain_offset(select<0,2,3>(offset), mDQ_in);
auto mQ = domain_offset(select<0,2,4>(offset), mQ_in);
auto mK = domain_offset(select<1,2,4>(offset), mK_in);
auto mV = domain_offset(select<1,3,4>(offset), mV_in);
auto mO = domain_offset(select<0,3,4>(offset), mO_in);
auto mLSE = domain_offset(select<0,4>(offset), mLSE_in);
auto mDO = domain_offset(select<0,3,4>(offset), mDO_in);
auto mDQ = domain_offset(select<0,2,4>(offset), mDQ_in);
for (int idx_Q = blockIdx.x; idx_Q < size<0>(problem_shape); idx_Q += gridDim.x) {
for (int idx_K = threadIdx.x; idx_K < size<1>(problem_shape); idx_K += blockDim.x) {
ElementAccumulator acc_qk = 0;
@@ -82,10 +84,15 @@ void __global__ fmha_bwd_reference_dQ_kernel(
ElementAccumulator acc_doo = 0;
for (int idx_D0 = 0; idx_D0 < size<2>(problem_shape); idx_D0++) {
acc_qk += mQ(idx_Q, idx_D0, idx_L) * mK(idx_K, idx_D0, idx_L);
acc_dov += mDO(idx_Q, idx_D0, idx_L) * mV(idx_K, idx_D0, idx_L);
acc_doo += mDO(idx_Q, idx_D0, idx_L) * mO(idx_Q, idx_D0, idx_L);
// acc_dov += mDO(idx_Q, idx_D0, idx_L) * mV(idx_K, idx_D0, idx_L);
// acc_doo += mDO(idx_Q, idx_D0, idx_L) * mO(idx_Q, idx_D0, idx_L);
} // for idx_D0
for (int idx_D1 = 0; idx_D1 < size<3>(problem_shape); idx_D1++) {
acc_dov += mDO(idx_Q, idx_D1, idx_L) * mV(idx_K, idx_D1, idx_L);
acc_doo += mDO(idx_Q, idx_D1, idx_L) * mO(idx_Q, idx_D1, idx_L);
}
auto id = make_identity_tensor(make_shape(1, 1));
auto frag = make_tensor<ElementAccumulator>(Shape<_1, _1>{});
frag(0) = acc_qk;
@@ -135,20 +142,20 @@ void __global__ fmha_bwd_reference_dK_kernel(
ElementAccumulator softmax_scale = 1.0 / sqrt(ElementAccumulator(size<2>(problem_shape_in)));
for (int idx_L = blockIdx.y; idx_L < size<3>(problem_shape_in); idx_L += gridDim.y) {
for (int idx_L = blockIdx.y; idx_L < size<4>(problem_shape_in); idx_L += gridDim.y) {
auto [problem_shape, offset] = apply_variable_length_offset(
problem_shape_in,
make_coord(_0{}, _0{}, _0{}, idx2crd(idx_L, get<3>(problem_shape_in)))
make_coord(_0{}, _0{}, _0{}, _0{}, idx2crd(idx_L, get<4>(problem_shape_in)))
);
// problem_shape = problem_shape_in;
// offset = repeat_like(problem_shape_in, _0{});
auto mQ = domain_offset(select<0,2,3>(offset), mQ_in);
auto mK = domain_offset(select<1,2,3>(offset), mK_in);
auto mV = domain_offset(select<1,2,3>(offset), mV_in);
auto mO = domain_offset(select<0,2,3>(offset), mO_in);
auto mLSE = domain_offset(select<0,3>(offset), mLSE_in);
auto mDO = domain_offset(select<0,2,3>(offset), mDO_in);
auto mDK = domain_offset(select<1,2,3>(offset), mDK_in);
auto mQ = domain_offset(select<0,2,4>(offset), mQ_in);
auto mK = domain_offset(select<1,2,4>(offset), mK_in);
auto mV = domain_offset(select<1,3,4>(offset), mV_in);
auto mO = domain_offset(select<0,3,4>(offset), mO_in);
auto mLSE = domain_offset(select<0,4>(offset), mLSE_in);
auto mDO = domain_offset(select<0,3,4>(offset), mDO_in);
auto mDK = domain_offset(select<1,2,4>(offset), mDK_in);
for (int idx_K = blockIdx.x; idx_K < size<1>(problem_shape); idx_K += gridDim.x) {
for (int idx_Q = threadIdx.x; idx_Q < size<0>(problem_shape); idx_Q += blockDim.x) {
ElementAccumulator acc_qk = 0;
@@ -156,10 +163,14 @@ void __global__ fmha_bwd_reference_dK_kernel(
ElementAccumulator acc_doo = 0;
for (int idx_D0 = 0; idx_D0 < size<2>(problem_shape); idx_D0++) {
acc_qk += mQ(idx_Q, idx_D0, idx_L) * mK(idx_K, idx_D0, idx_L);
acc_dov += mDO(idx_Q, idx_D0, idx_L) * mV(idx_K, idx_D0, idx_L);
acc_doo += mDO(idx_Q, idx_D0, idx_L) * mO(idx_Q, idx_D0, idx_L);
// acc_dov += mDO(idx_Q, idx_D0, idx_L) * mV(idx_K, idx_D0, idx_L);
// acc_doo += mDO(idx_Q, idx_D0, idx_L) * mO(idx_Q, idx_D0, idx_L);
} // for idx_D0
for (int idx_D1 = 0; idx_D1 < size<3>(problem_shape); idx_D1++) {
acc_dov += mDO(idx_Q, idx_D1, idx_L) * mV(idx_K, idx_D1, idx_L);
acc_doo += mDO(idx_Q, idx_D1, idx_L) * mO(idx_Q, idx_D1, idx_L);
}
auto id = make_identity_tensor(make_shape(1, 1));
auto frag = make_tensor<ElementAccumulator>(Shape<_1, _1>{});
frag(0) = acc_qk;
@@ -209,20 +220,20 @@ void __global__ fmha_bwd_reference_dV_kernel(
ElementAcc softmax_scale = 1.0 / sqrt(ElementAcc(size<2>(problem_shape_in)));
for (int idx_L = blockIdx.y; idx_L < size<3>(problem_shape_in); idx_L += gridDim.y) {
for (int idx_L = blockIdx.y; idx_L < size<4>(problem_shape_in); idx_L += gridDim.y) {
auto [problem_shape, offset] = apply_variable_length_offset(
problem_shape_in,
make_coord(_0{}, _0{}, _0{}, idx2crd(idx_L, get<3>(problem_shape_in)))
make_coord(_0{}, _0{}, _0{}, _0{}, idx2crd(idx_L, get<4>(problem_shape_in)))
);
// problem_shape = problem_shape_in;
// offset = repeat_like(problem_shape_in, _0{});
auto mQ = domain_offset(select<0,2,3>(offset), mQ_in);
auto mK = domain_offset(select<1,2,3>(offset), mK_in);
auto mV = domain_offset(select<1,2,3>(offset), mV_in);
auto mO = domain_offset(select<0,2,3>(offset), mO_in);
auto mLSE = domain_offset(select<0,3>(offset), mLSE_in);
auto mDO = domain_offset(select<0,2,3>(offset), mDO_in);
auto mDV = domain_offset(select<1,2,3>(offset), mDV_in);
auto mQ = domain_offset(select<0,2,4>(offset), mQ_in);
auto mK = domain_offset(select<1,2,4>(offset), mK_in);
auto mV = domain_offset(select<1,3,4>(offset), mV_in);
auto mO = domain_offset(select<0,3,4>(offset), mO_in);
auto mLSE = domain_offset(select<0,4>(offset), mLSE_in);
auto mDO = domain_offset(select<0,3,4>(offset), mDO_in);
auto mDV = domain_offset(select<1,3,4>(offset), mDV_in);
for (int idx_K = blockIdx.x; idx_K < size<1>(problem_shape); idx_K += gridDim.x) {
for (int idx_Q = threadIdx.x; idx_Q < size<0>(problem_shape); idx_Q += blockDim.x) {
ElementAcc acc_qk = 0;
@@ -244,7 +255,7 @@ void __global__ fmha_bwd_reference_dV_kernel(
__syncthreads();
for (int idx_D = threadIdx.x; idx_D < size<2>(problem_shape); idx_D += blockDim.x) {
for (int idx_D = threadIdx.x; idx_D < size<3>(problem_shape); idx_D += blockDim.x) {
ElementAcc acc = 0;
for (int idx_Q = 0; idx_Q < size<0>(problem_shape); idx_Q++) {
ElementAcc rS = static_cast<Element>(mS[idx_Q]);