anirudh2290 commented on a change in pull request #8938: Add operator for
dot(dns, csr) = csr
URL: https://github.com/apache/incubator-mxnet/pull/8938#discussion_r159539941
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File path: src/operator/tensor/dot-inl.h
##########
@@ -228,8 +231,17 @@ inline bool DotForwardInferStorageType(const
nnvm::NodeAttrs& attrs,
if (!dispatched && lhs_stype == kCSRStorage && rhs_rsp_or_dns &&
!param.transpose_a && !param.transpose_b) {
// csr, rsp/dns -> dns
- dispatched = storage_type_assign(&out_stype, kDefaultStorage,
- dispatch_mode, DispatchMode::kFComputeEx);
+ dispatched = storage_type_assign(&out_stype, kDefaultStorage,
dispatch_mode,
+ DispatchMode::kFComputeEx);
+ }
+ if (!dispatched && lhs_stype == kDefaultStorage && rhs_stype == kCSRStorage
&&
+ !param.transpose_a && !param.transpose_b) {
+ // dns, csr -> csr
+ const bool invalid_ctx = dev_mask != mshadow::cpu::kDevMask;
+ const auto dispatch_ex = invalid_ctx ? DispatchMode::kFComputeFallback
+ : DispatchMode::kFComputeEx;
+ dispatched = storage_type_assign(&out_stype, kCSRStorage, dispatch_mode,
+ dispatch_ex);
}
Review comment:
Yes moving the logic to common path would be nice. I see multiple places
where we don't have this check. For example,
https://github.com/apache/incubator-mxnet/blob/d2a856a3a2abb4e72edc301b8b821f0b75f30722/src/operator/tensor/elemwise_unary_op_basic.cc#L65
and
https://github.com/apache/incubator-mxnet/blob/d2a856a3a2abb4e72edc301b8b821f0b75f30722/src/operator/tensor/elemwise_binary_scalar_op_basic.cc#L68
. These need to be fixed right ?
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