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_r182918193
##########
File path: src/operator/tensor/dot.cc
##########
@@ -51,13 +150,19 @@ NNVM_REGISTER_OP(dot)
dot(x,y)[0,0,1,1] = 0
sum(x[0,0,:]*y[:,1,1]) = 0
-The storage type of ``dot`` output depends on storage types of inputs and
transpose options:
+The storage type of ``dot`` output depends on storage types of inputs,
transpose options and given
+hint for output storage type:
+Implemented sprase operations include:
- dot(csr, default) = default
-- dot(csr.T, default) = row_sparse
+- dot(csr, default, transpose_a=True) = row_sparse
- dot(csr, row_sparse) = default
-- dot(default, csr) = csr
-- otherwise, ``dot`` generates output with default storage
+- dot(default, csr) = csr on CPU only
+- dot(default, csr) = dense on GPU only
Review comment:
Done
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