Implemented the in-direct version of the strided-batched GEMM kernel

3 files changed, 124 insertions, 1 deletions

diff --git a/src/kernels/level3/copy_pad.opencl b/src/kernels/level3/copy_pad.opencl
index 2e191514..3d389b74 100644
--- a/src/kernels/level3/copy_pad.opencl
+++ b/src/kernels/level3/copy_pad.opencl
@@ -174,6 +174,45 @@ void CopyMatrixBatched(const int src_one, const int src_two,
 
 #endif
 // =================================================================================================
+#if defined(ROUTINE_GEMMSTRIDEDBATCHED)
+
+// Strided-batched version of the above
+__kernel __attribute__((reqd_work_group_size(PAD_DIMX, PAD_DIMY, 1)))
+void CopyPadMatrixStridedBatched(const int src_one, const int src_two,
+                                 const int src_ld, const int src_offset,
+                                 const int src_stride, __global const real* restrict src,
+                                 const int dest_one, const int dest_two,
+                                 const int dest_ld, const int dest_offset,
+                                 const int dest_stride, __global real* dest,
+                                 const int do_conjugate) {
+  const int batch = get_group_id(2);
+  const int src_offset_batch = src_offset + src_stride * batch;
+  const int dest_offset_batch = dest_offset + dest_stride * batch;
+  real alpha; SetToOne(alpha);
+  _CopyPadMatrix(src_one, src_two, src_ld, src_offset_batch, src,
+                 dest_one, dest_two, dest_ld, dest_offset_batch, dest,
+                 alpha, do_conjugate);
+}
+
+// Strided-batched version of the above
+__kernel __attribute__((reqd_work_group_size(PAD_DIMX, PAD_DIMY, 1)))
+void CopyMatrixStridedBatched(const int src_one, const int src_two,
+                              const int src_ld, const int src_offset,
+                              const int src_stride, __global const real* restrict src,
+                              const int dest_one, const int dest_two,
+                              const int dest_ld, const int dest_offset,
+                              const int dest_stride, __global real* dest) {
+  const int batch = get_group_id(2);
+  const int src_offset_batch = src_offset + src_stride * batch;
+  const int dest_offset_batch = dest_offset + dest_stride * batch;
+  real alpha; SetToOne(alpha);
+  _CopyMatrix(src_one, src_two, src_ld, src_offset_batch, src,
+              dest_one, dest_two, dest_ld, dest_offset_batch, dest,
+              alpha, 0, 0, 0);
+}
+
+#endif
+// =================================================================================================
 
 // End of the C++11 raw string literal
 )"
diff --git a/src/kernels/level3/transpose_pad.opencl b/src/kernels/level3/transpose_pad.opencl
index 67c2bf72..e55a8b7c 100644
--- a/src/kernels/level3/transpose_pad.opencl
+++ b/src/kernels/level3/transpose_pad.opencl
@@ -231,6 +231,47 @@ void TransposeMatrixBatched(const int src_one, const int src_two,
 
 #endif
 // =================================================================================================
+#if defined(ROUTINE_GEMMSTRIDEDBATCHED)
+
+// Strided-batched version of the above
+__kernel __attribute__((reqd_work_group_size(PADTRA_TILE, PADTRA_TILE, 1)))
+void TransposePadMatrixStridedBatched(const int src_one, const int src_two,
+                                      const int src_ld, const int src_offset,
+                                      const int src_stride, __global const real* restrict src,
+                                      const int dest_one, const int dest_two,
+                                      const int dest_ld, const int dest_offset,
+                                      const int dest_stride, __global real* dest,
+                                      const int do_conjugate) {
+  const int batch = get_group_id(2);
+  const int src_offset_batch = src_offset + src_stride * batch;
+  const int dest_offset_batch = dest_offset + dest_stride * batch;
+  real alpha; SetToOne(alpha);
+  __local real tile[(PADTRA_WPT*PADTRA_TILE) * (PADTRA_WPT*PADTRA_TILE + PADTRA_PAD)];
+  _TransposePadMatrix(tile, src_one, src_two, src_ld, src_offset_batch, src,
+                      dest_one, dest_two, dest_ld, dest_offset_batch, dest,
+                      alpha, do_conjugate);
+}
+
+// Strided-batched version of the above
+__kernel __attribute__((reqd_work_group_size(PADTRA_TILE, PADTRA_TILE, 1)))
+void TransposeMatrixStridedBatched(const int src_one, const int src_two,
+                                   const int src_ld, const int src_offset,
+                                   const int src_stride, __global const real* restrict src,
+                                   const int dest_one, const int dest_two,
+                                   const int dest_ld, const int dest_offset,
+                                   const int dest_stride, __global real* dest) {
+  const int batch = get_group_id(2);
+  const int src_offset_batch = src_offset + src_stride * batch;
+  const int dest_offset_batch = dest_offset + dest_stride * batch;
+  real alpha; SetToOne(alpha);
+  __local real tile[(PADTRA_WPT*PADTRA_TILE) * (PADTRA_WPT*PADTRA_TILE + PADTRA_PAD)];
+  _TransposeMatrix(tile, src_one, src_two, src_ld, src_offset_batch, src,
+                   dest_one, dest_two, dest_ld, dest_offset_batch, dest,
+                   alpha, 0, 0, 0);
+}
+
+#endif
+// =================================================================================================
 
 // End of the C++11 raw string literal
 )"
diff --git a/src/kernels/level3/xgemm_batched.opencl b/src/kernels/level3/xgemm_batched.opencl
index 372f910b..b51e6298 100644
--- a/src/kernels/level3/xgemm_batched.opencl
+++ b/src/kernels/level3/xgemm_batched.opencl
@@ -17,8 +17,8 @@
 R"(
 
 // =================================================================================================
+#if defined(ROUTINE_GEMMBATCHED)
 
-// Main entry point of the kernel. This is the regular full version.
 __kernel __attribute__((reqd_work_group_size(MDIMC, NDIMC, 1)))
 void XgemmBatched(const int kSizeM, const int kSizeN, const int kSizeK,
                   const __constant real_arg* arg_alphas,
@@ -58,6 +58,49 @@ void XgemmBatched(const int kSizeM, const int kSizeN, const int kSizeK,
   #endif
 }
 
+#endif
+// =================================================================================================
+#if defined(ROUTINE_GEMMSTRIDEDBATCHED)
+
+__kernel __attribute__((reqd_work_group_size(MDIMC, NDIMC, 1)))
+void XgemmStridedBatched(const int kSizeM, const int kSizeN, const int kSizeK,
+                         const real_arg arg_alpha, const real_arg arg_beta,
+                         const __global realM* restrict agm, const int a_one, const int a_two,
+                         const __global realN* restrict bgm, const int b_one, const int b_two,
+                         __global realM* cgm, const int c_one, const int c_two) {
+  const int batch = get_group_id(2);
+  const real alpha = GetRealArg(arg_alpha);
+  const real beta = GetRealArg(arg_beta);
+
+  // Sets the offsets
+  const int a_offset = batch * a_one * a_two;
+  const int b_offset = batch * b_one * b_two;
+  const int c_offset = batch * c_one * c_two;
+  const __global realM* restrict agm_ = &agm[a_offset / VWM];
+  const __global realN* restrict bgm_ = &bgm[b_offset / VWN];
+  __global realM* restrict cgm_ = &cgm[c_offset / VWM];
+
+  // Allocates workgroup-private memory (local memory)
+  #if SA == 1
+    __local realM alm[KWG * MWG/VWM];
+  #endif
+  #if SB == 1
+    __local realN blm[KWG * NWG/VWN];
+  #endif
+
+  // Computes the matrix-multiplication and stores the result in global memory
+  #if SA == 1 && SB == 1
+    XgemmBody(kSizeM, kSizeN, kSizeK, agm_, bgm_, cgm_, alpha, beta, alm, blm);
+  #elif SA == 1
+    XgemmBody(kSizeM, kSizeN, kSizeK, agm_, bgm_, cgm_, alpha, beta, alm);
+  #elif SB == 1
+    XgemmBody(kSizeM, kSizeN, kSizeK, agm_, bgm_, cgm_, alpha, beta, blm);
+  #else
+    XgemmBody(kSizeM, kSizeN, kSizeK, agm_, bgm_, cgm_, alpha, beta);
+  #endif
+}
+
+#endif
 // =================================================================================================
 
 // End of the C++11 raw string literal