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refactor the loop if/else check

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Keeps DivisibleK and NotDivisibleK logic explicit
Ensures clear separation between the bulk iterations and the last special case
Easier to modify later if conditions change
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A-transformer 2025-02-27 22:23:53 +04:00 committed by GitHub
parent a2e0d68eed
commit b0b9e03345
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1 changed files with 10 additions and 7 deletions
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17
deep_gemm/include/deep_gemm/fp8_gemm.cuh
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@ -129,14 +129,17 @@ fp8_gemm_kernel(__nv_bfloat16* gmem_d, float* scales_b, int* grouped_layout,
struct DivisibleK {};
struct NotDivisibleK {};
auto launch_k_iterations = [](const auto& func) {
if constexpr (SHAPE_K % kFullKOfAllStages == 0) {
for (int k_iter = 0; k_iter < kNumIterations; ++ k_iter)
func(k_iter, DivisibleK{});
} else {
for (int k_iter = 0; k_iter < kNumIterations - 1; ++ k_iter)
func(k_iter, DivisibleK{});
func(kNumIterations - 1, NotDivisibleK{});
constexpr bool is_divisible = (SHAPE_K % kFullKOfAllStages == 0);
constexpr int last_iter = kNumIterations - 1;
static_assert(kNumIterations > 0, "At least one iteration required");
// Handle all but the last iteration with DivisibleK
for (int k_iter = 0; k_iter < last_iter; ++k_iter) {
func(k_iter, DivisibleK{});
}
// Last iteration: DivisibleK if SHAPE_K is divisible, NotDivisibleK otherwise
func(last_iter, is_divisible ? DivisibleK{} : NotDivisibleK{});
};
// Register reconfigurations