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Unverified Commit 3956085d authored by Jianfeng Yan's avatar Jianfeng Yan Committed by GitHub
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add comments to batched_gemm (#186) 

* add comments to batched_gemm

* formatting

* fix a typo in batched_gemm_documentation

* fix naming
parent 7c0b1498
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Showing with 48 additions and 20 deletions
include/ck/tensor_operation/gpu/device/device_batched_gemm_xdl.hpp
View file @ 3956085d
......@@ -16,6 +16,31 @@ namespace ck {
namespace tensor_operation {
namespace device {
/*
* \brief Wrapper function of GridwiseGemm::Run to realize BatchedGEMM.
*
* \tparam ComputePtrOffsetOfBatch Class that computes the base pointer offsets of A, B, C matrix
* given the batch. For example, ComputePtrOffsetOfStridedBatch() computes the offsets of evenly
* strided batched, but we can easily extend to other layouts. The returned offset can be either \p
* index_t or \p long_index_t. If it returns \p long_index_t, we are not subject to the 2GB
* limitations.
*
* \tparam Block2CTileMap Block2CTileMap::CalculateBottomIndex() takes in id of a workgroup and
* returns the 2D index of the tile that it computes. \see
* GridwiseGemm_k0mk1_k0nk1_mn_xdlops_v2r3::Run().
*
* \note Using \p ComputePtrOffsetOfBatch gives us the flexibility that 2 workgroups can compute 2
* tiles from different matrices. Keep in mind that these 2 matrices can share the same grid
* descriptor (like in BatchedGEMM), or use their own grid descriptors (in GroupedGemm). \link
* device_conv3d_fwd_xdl_ndhwc_kzyxc_ndhwk.hpp kernel_gemm_xdlops_v2r3_for_conv3d \endlink for \link
* DeviceConv3d \endlink uses the same concept, but currently does NOT encapsulate the computing of
* pointer offset into \p ComputePtrOffsetOfStridedBatch.
*
* \note \p Block2CTileMap allows customized mapping between a workgroup and the C-tile it computes.
* Together with \p ComputePtrOffsetOfBatch, we can reuse GridwiseGemm (and GridwiseGemm fusion ) to
* realize BatchedGemm and GroupedGemm (and the corresponding GEMM fusion).
*
*/
template <typename GridwiseGemm,
typename FloatAB,
typename FloatC,
......@@ -25,7 +50,7 @@ template <typename GridwiseGemm,
typename AElementwiseOperation,
typename BElementwiseOperation,
typename CElementwiseOperation,
typename ComputeBasePrtOfBatch,
typename ComputePtrOffsetOfBatch,
typename Block2CTileMap,
bool HasMainKBlockLoop>
__global__ void
......@@ -43,7 +68,7 @@ __global__ void
const AElementwiseOperation a_element_op,
const BElementwiseOperation b_element_op,
const CElementwiseOperation c_element_op,
const ComputeBasePrtOfBatch compute_base_ptr_of_batch_,
const ComputePtrOffsetOfBatch compute_ptr_offset_of_batch,
const Block2CTileMap block_2_ctile_map)
{
#if(!defined(__HIP_DEVICE_COMPILE__) || defined(__gfx908__) || defined(__gfx90a__))
......@@ -52,11 +77,11 @@ __global__ void
const index_t g_idx = __builtin_amdgcn_readfirstlane(get_block_1d_id() / num_blocks_per_batch);
const long_index_t a_batch_offset = __builtin_amdgcn_readfirstlane(
static_cast<long_index_t>(compute_base_ptr_of_batch_.GetABasePtr(g_idx)));
static_cast<long_index_t>(compute_ptr_offset_of_batch.GetAPtrOffset(g_idx)));
const long_index_t b_batch_offset = __builtin_amdgcn_readfirstlane(
static_cast<long_index_t>(compute_base_ptr_of_batch_.GetBBasePtr(g_idx)));
static_cast<long_index_t>(compute_ptr_offset_of_batch.GetBPtrOffset(g_idx)));
const long_index_t c_batch_offset = __builtin_amdgcn_readfirstlane(
static_cast<long_index_t>(compute_base_ptr_of_batch_.GetCBasePtr(g_idx)));
static_cast<long_index_t>(compute_ptr_offset_of_batch.GetCPtrOffset(g_idx)));
__shared__ char p_shared[GridwiseGemm::GetSharedMemoryNumberOfByte()];
......@@ -256,26 +281,26 @@ struct DeviceBatchedGemmXdl
return globalblockid_to_m0_n0_block_cluster_adaptor;
}
struct ComputeBasePtrOfStridedBatch
struct ComputePtrOffsetOfStridedBatch
{
ComputeBasePtrOfStridedBatch(index_t BatchStrideA,
ComputePtrOffsetOfStridedBatch(index_t BatchStrideA,
index_t BatchStrideB,
index_t BatchStrideC)
: BatchStrideA_(BatchStrideA), BatchStrideB_(BatchStrideB), BatchStrideC_(BatchStrideC)
{
}
__host__ __device__ constexpr long_index_t GetABasePtr(index_t g_idx) const
__host__ __device__ constexpr long_index_t GetAPtrOffset(index_t g_idx) const
{
return g_idx * static_cast<long_index_t>(BatchStrideA_);
}
__host__ __device__ constexpr long_index_t GetBBasePtr(index_t g_idx) const
__host__ __device__ constexpr long_index_t GetBPtrOffset(index_t g_idx) const
{
return g_idx * static_cast<long_index_t>(BatchStrideB_);
}
__host__ __device__ constexpr long_index_t GetCBasePtr(index_t g_idx) const
__host__ __device__ constexpr long_index_t GetCPtrOffset(index_t g_idx) const
{
return g_idx * static_cast<long_index_t>(BatchStrideC_);
}
......@@ -359,7 +384,7 @@ struct DeviceBatchedGemmXdl
DeviceBatchedGemmXdl::MakeBGridDescriptor_K0_N_K1(K, N, StrideB)},
c_grid_desc_m_n_{DeviceBatchedGemmXdl::MakeCGridDescriptor_M_N(M, N, StrideC)},
c_grid_desc_m0_n0_m1_n1_m2_m3_m4_n2_{},
compute_base_ptr_of_batch_{a_grid_desc_k0_m_k1_.GetElementSpaceSize(),
compute_ptr_offset_of_batch_{a_grid_desc_k0_m_k1_.GetElementSpaceSize(),
b_grid_desc_k0_n_k1_.GetElementSpaceSize(),
c_grid_desc_m_n_.GetElementSpaceSize()},
block_2_ctile_map_{},
......@@ -388,7 +413,7 @@ struct DeviceBatchedGemmXdl
BGridDesc_K0_N_K1 b_grid_desc_k0_n_k1_;
CGridDesc_M_N c_grid_desc_m_n_;
CGridDesc_M0_N0_M1_N1_M2_M3_M4_N2 c_grid_desc_m0_n0_m1_n1_m2_m3_m4_n2_;
ComputeBasePtrOfStridedBatch compute_base_ptr_of_batch_;
ComputePtrOffsetOfStridedBatch compute_ptr_offset_of_batch_;
Block2CTileMap block_2_ctile_map_;
index_t M01_;
index_t N01_;
......@@ -448,7 +473,7 @@ struct DeviceBatchedGemmXdl
AElementwiseOperation,
BElementwiseOperation,
CElementwiseOperation,
ComputeBasePtrOfStridedBatch,
ComputePtrOffsetOfStridedBatch,
remove_reference_t<Block2CTileMap>,
true>;
......@@ -467,7 +492,7 @@ struct DeviceBatchedGemmXdl
arg.a_element_op_,
arg.b_element_op_,
arg.c_element_op_,
arg.compute_base_ptr_of_batch_,
arg.compute_ptr_offset_of_batch_,
arg.block_2_ctile_map_);
}
else
......@@ -482,7 +507,7 @@ struct DeviceBatchedGemmXdl
AElementwiseOperation,
BElementwiseOperation,
CElementwiseOperation,
ComputeBasePtrOfStridedBatch,
ComputePtrOffsetOfStridedBatch,
remove_reference_t<Block2CTileMap>,
false>;
......@@ -501,7 +526,7 @@ struct DeviceBatchedGemmXdl
arg.a_element_op_,
arg.b_element_op_,
arg.c_element_op_,
arg.compute_base_ptr_of_batch_,
arg.compute_ptr_offset_of_batch_,
arg.block_2_ctile_map_);
}
......
include/ck/tensor_operation/gpu/device/device_conv3d_fwd_xdl_ndhwc_kzyxc_ndhwk.hpp
View file @ 3956085d
......@@ -18,6 +18,9 @@ namespace ck {
namespace tensor_operation {
namespace device {
/*
* \see \link device_batched_gemm_xdl.hpp kernel_batched_gemm_xdlops_v2r3() \endlink.
*/
template <typename GridwiseGemm,
typename FloatAB,
typename FloatC,
......
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