Add gridwise GEMM pipeline #89
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| #ifndef CK_GRIDWISE_GEMM_PIPELINE_V1_HPP | ||
| #define CK_GRIDWISE_GEMM_PIPELINE_V1_HPP | ||
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| #include "common_header.hpp" | ||
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| namespace ck { | ||
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| template <typename AGridDesc, | ||
| typename ABlockDesc, | ||
| typename ABlockTransfer, | ||
| typename AGridBuffer, | ||
| typename ABlockBuffer, | ||
| typename ABlockTransferStep, | ||
| typename BGridDesc, | ||
| typename BBlockDesc, | ||
| typename BBlockTransfer, | ||
| typename BGridBuffer, | ||
| typename BBlockBuffer, | ||
| typename BBlockTransferStep, | ||
| typename BlockwiseGemm, | ||
| typename CThreadBuffer, | ||
| index_t NumPrefetch, | ||
| bool HasMainLoop> | ||
| struct GridwiseGemmPipeline_v1 | ||
| { | ||
| static constexpr auto I0 = Number<0>{}; | ||
| static constexpr auto I1 = Number<1>{}; | ||
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| static __device__ void Run(const AGridDesc& a_grid_desc, | ||
| const ABlockDesc& a_block_desc, | ||
| ABlockTransfer& a_blockwise_copy, | ||
| const AGridBuffer& a_grid_buf, | ||
| ABlockBuffer& a_block_buf, | ||
| const ABlockTransferStep& a_block_copy_step, | ||
| const BGridDesc& b_grid_desc, | ||
| const BBlockDesc& b_block_desc, | ||
| BBlockTransfer& b_blockwise_copy, | ||
| const BGridBuffer& b_grid_buf, | ||
| BBlockBuffer& b_block_buf, | ||
| const BBlockTransferStep& b_block_copy_step, | ||
| const BlockwiseGemm& blockwise_gemm, | ||
| CThreadBuffer& c_thread_buf, | ||
| index_t NumLoop) | ||
| { | ||
| static_assert(NumPrefetch == 1 || NumPrefetch == 2, "wrong!"); | ||
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| if constexpr(NumPrefetch == 1) | ||
| { | ||
| #if 0 | ||
| // preload data into LDS | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf); | ||
| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf); | ||
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| // Initialize C | ||
| c_thread_buf.Clear(); | ||
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| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf); | ||
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| // main body | ||
| if constexpr(HasMainLoop) | ||
| { | ||
| index_t i = 0; | ||
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| do | ||
| { | ||
| a_blockwise_copy.MoveSrcSliceWindow(a_grid_desc, a_block_copy_step); | ||
| b_blockwise_copy.MoveSrcSliceWindow(b_grid_desc, b_block_copy_step); | ||
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| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf); | ||
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| block_sync_lds(); | ||
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| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf); | ||
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| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
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| block_sync_lds(); | ||
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| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf); | ||
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| ++i; | ||
| } while(i < (NumLoop - 1)); | ||
| } | ||
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| // tail | ||
| { | ||
| block_sync_lds(); | ||
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| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
| } | ||
| #else | ||
| // preload data into LDS | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf); | ||
| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf); | ||
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| a_blockwise_copy.MoveSrcSliceWindow(a_grid_desc, a_block_copy_step); | ||
| b_blockwise_copy.MoveSrcSliceWindow(b_grid_desc, b_block_copy_step); | ||
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| // Initialize C | ||
| c_thread_buf.Clear(); | ||
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| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf); | ||
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| // main body | ||
| if constexpr(HasMainLoop) | ||
| { | ||
| index_t i = 0; | ||
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| do | ||
| { | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf); | ||
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| block_sync_lds(); | ||
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| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf); | ||
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| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
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| block_sync_lds(); | ||
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| a_blockwise_copy.MoveSrcSliceWindow(a_grid_desc, a_block_copy_step); | ||
| b_blockwise_copy.MoveSrcSliceWindow(b_grid_desc, b_block_copy_step); | ||
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| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf); | ||
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| ++i; | ||
| } while(i < (NumLoop - 1)); | ||
| } | ||
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| // tail | ||
| { | ||
| block_sync_lds(); | ||
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| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
| } | ||
| #endif | ||
| } | ||
| else if constexpr(NumPrefetch == 2) | ||
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Contributor
There was a problem hiding this comment. I'd preferably move these different pipelines to their own template specializations. Things like: template <
typename Params,
index_t NumPrefetch>
struct GridwiseGemmPipeline_v1; // class template declaration
template <typename Params>
struct GridwiseGemmPipeline_v1<Params, 1>
{
// implements 1 stage prefetch
}
template <typename Params>
struct GridwiseGemmPipeline_v1<Params, 2>
{
// implements 2 stage prefetch
}The upside of this approach is that when someone accidentally calls nonexistent 3 stage prefetch it triggers compilation error immediately instead of silently compiles. But of course you already have |
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| { | ||
| // preload data into LDS | ||
| { | ||
| // Read 0 | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf, I0); | ||
| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf, I0); | ||
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| // Move | ||
| a_blockwise_copy.MoveSrcSliceWindow(a_grid_desc, a_block_copy_step); | ||
| b_blockwise_copy.MoveSrcSliceWindow(b_grid_desc, b_block_copy_step); | ||
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| // Read 1 | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf, I1); | ||
| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf, I1); | ||
| } | ||
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| // Initialize C | ||
| c_thread_buf.Clear(); | ||
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| // main body | ||
| if constexpr(HasMainLoop) | ||
| { | ||
| index_t i = 0; | ||
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| do | ||
| { | ||
| // Move | ||
| a_blockwise_copy.MoveSrcSliceWindow(a_grid_desc, a_block_copy_step); | ||
| b_blockwise_copy.MoveSrcSliceWindow(b_grid_desc, b_block_copy_step); | ||
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| // Write i | ||
| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf, I0); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf, I0); | ||
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| // Read i+2 | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf, I0); | ||
| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf, I0); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| // Gemm i | ||
| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| // Move | ||
| a_blockwise_copy.MoveSrcSliceWindow(a_grid_desc, a_block_copy_step); | ||
| b_blockwise_copy.MoveSrcSliceWindow(b_grid_desc, b_block_copy_step); | ||
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| // Write i+1 | ||
| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf, I1); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf, I1); | ||
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| // Read i+3 | ||
| a_blockwise_copy.RunRead(a_grid_desc, a_grid_buf, I1); | ||
| b_blockwise_copy.RunRead(b_grid_desc, b_grid_buf, I1); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| // Gemm i+1 | ||
| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| i += 2; | ||
| } while(i < (NumLoop - 2)); | ||
| } | ||
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| // tail | ||
| { | ||
| // Write NumLoop - 2 | ||
| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf, I0); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf, I0); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| // Gemm NumLoop - 2 | ||
| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| // Write NumLoop - 1 | ||
| a_blockwise_copy.RunWrite(a_block_desc, a_block_buf, I1); | ||
| b_blockwise_copy.RunWrite(b_block_desc, b_block_buf, I1); | ||
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| // Sync | ||
| block_sync_lds(); | ||
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| // Gemm NumLoop - 1 | ||
| blockwise_gemm.Run(a_block_buf, b_block_buf, c_thread_buf); | ||
| } | ||
| } | ||
| } | ||
| }; | ||
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| } // namespace ck | ||
| #endif | ||
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I thought we are supposedly to use snake_case for variables?
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good catch
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fixed