cjolivier01 commented on a change in pull request #9625: sparse regression
operators
URL: https://github.com/apache/incubator-mxnet/pull/9625#discussion_r165851301
##
File path: src/operator/regression_output-inl.h
##
@@ -121,6 +175,67 @@ void RegressionBackward(const nnvm::NodeAttrs& attrs,
});
}
+
+template
+inline void RegressionBackwardCSRImpl(mshadow::Stream *s,
+ const RegressionOutputParam& param,
+ const OpReqType req,
+ const NDArray &data, const NDArray
&label,
+ const NDArray &data_grad, const bool
sparse_kernel) {
+ using namespace mshadow;
+ using namespace mxnet_op;
+ using namespace csr;
+ const TShape dshape = data.shape();
+ const nnvm::dim_t num_rows = dshape[0];
+ const nnvm::dim_t row_length = dshape[1];
+ MSHADOW_IDX_TYPE_SWITCH(label.aux_type(kIndPtr), RType, {
+MSHADOW_IDX_TYPE_SWITCH(label.aux_type(kIdx), IType, {
+ MSHADOW_REAL_TYPE_SWITCH(label.dtype(), DType, {
+MXNET_ASSIGN_REQ_SWITCH(req, Req, {
+ const RType* label_indptr = label.aux_data(kIndPtr).dptr();
Review comment:
probably this 4-deep switch is what is causing the error when it gets
instantiated too many times
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