haojin2 commented on a change in pull request #10371: [MXNET-263] [WIP] Support
for dot(dns, csr) = dns and dot(dns, csr.T) = dns on GPU
URL: https://github.com/apache/incubator-mxnet/pull/10371#discussion_r182918157
##########
File path: src/operator/tensor/dot-inl.cuh
##########
@@ -895,6 +997,150 @@ inline void DotCsrRspDnsImpl(const OpContext& ctx,
});
}
+/*
+ * \brief GPU Impl of dot(dns, csr) = csr
+ */
+template<typename gpu>
+inline void DotDnsCsrCsrImpl(const OpContext& ctx,
+ const TBlob& lhs, const NDArray& rhs,
+ const OpReqType req, NDArray* ret) {
+ LOG(FATAL) << "dot(dense, csr) = csr is not implemented on GPU";
+}
+
+/*
+ * \brief GPU Impl of dot(dns, csr) = dns and dot(dns, csr.T) = dns
+ */
+template<typename gpu>
+inline void DotDnsCsrDnsImpl(const OpContext& ctx,
+ const TBlob& dns, const NDArray& rhs,
+ const OpReqType req, NDArray* ret,
+ const bool transpose_b) {
+ CHECK_EQ(req, kWriteTo);
+ CHECK_EQ(rhs.storage_type(), kCSRStorage);
+
+ using namespace mshadow;
+ using namespace mshadow::expr;
+ using nnvm::dim_t;
+
+ /* Initialize data structures */
+ mshadow::Stream<gpu>* s = ctx.get_stream<gpu>();
+ TBlob csr_data = rhs.data();
+ TBlob csr_indices = rhs.aux_data(csr::kIdx);
+ TBlob csr_indptr = rhs.aux_data(csr::kIndPtr);
+ if (!rhs.storage_initialized()) {
+ FillZerosCsrImpl(s, *ret);
+ return;
+ }
+
+ MSHADOW_SGL_DBL_TYPE_SWITCH(csr_data.type_flag_, DType, { // data type
+ MSHADOW_IDX_TYPE_SWITCH(csr_indices.type_flag_, IType, { // indptr type
+ MSHADOW_IDX_TYPE_SWITCH(csr_indptr.type_flag_, CType, { // colidx type
+ const CType out_num_rows = ret->shape()[0];
Review comment:
Done
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