eric-haibin-lin commented on a change in pull request #11113: Support for
dot(dns, csr) = dns and dot(dns, csr.T) = dns on CPU
URL: https://github.com/apache/incubator-mxnet/pull/11113#discussion_r194201555
##########
File path: src/operator/tensor/dot-inl.h
##########
@@ -1031,13 +1129,58 @@ inline void DotDnsCsrCsrImpl(const OpContext& ctx,
const cpu& cpu_dev,
}
/*
- * \brief Impl of dot(dns, csr) = dense (GPU only)
+ * \brief Impl of dot(dns, csr) = dns and dot(dns, csr.T) = dns
*/
inline void DotDnsCsrDnsImpl(const OpContext& ctx, const cpu& cpu_dev,
- const TBlob& dns, const NDArray& rhs,
- const OpReqType req, NDArray* ret,
- const bool transpose_b) {
- LOG(FATAL) << "dot(dense, csr) = dense is not implemented on CPU";
+ const TBlob& dns, const NDArray& rhs,
+ const OpReqType req, NDArray* ret,
+ const bool transpose_b) {
+ if (req == kNullOp) return;
+ CHECK_EQ(rhs.storage_type(), kCSRStorage);
+ mshadow::Stream<cpu>* s = ctx.get_stream<cpu>();
+ if (!rhs.storage_initialized()) {
+ FillZerosCsrImpl(s, *ret);
+ return;
+ }
+
+ using nnvm::dim_t;
+
+ const TBlob data_r = rhs.data();
+ const TBlob indptr_r = rhs.aux_data(csr::kIndPtr);
+ const TBlob col_idx_r = rhs.aux_data(csr::kIdx);
+ const TBlob& data_l = dns;
+ const TBlob data_out = ret->data();
+
+ MSHADOW_SGL_DBL_TYPE_SWITCH(data_r.type_flag_, DType, { // data type
+ MSHADOW_IDX_TYPE_SWITCH(indptr_r.type_flag_, IType, { // indptr type
+ MSHADOW_IDX_TYPE_SWITCH(col_idx_r.type_flag_, CType, { // col idx type
+ dim_t num_threads;
+ if (req == kWriteTo) {
Review comment:
req == writeto || req == writeinplace
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