larroy closed pull request #13340: fix ActivationGradCompute on CPU (had an
assertion when not on GPU & MKL)
URL: https://github.com/apache/incubator-mxnet/pull/13340
This is a PR merged from a forked repository.
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diff --git a/src/operator/nn/activation-inl.h b/src/operator/nn/activation-inl.h
index 2705177f951..8ea6b7563ef 100644
--- a/src/operator/nn/activation-inl.h
+++ b/src/operator/nn/activation-inl.h
@@ -199,12 +199,20 @@ void ActivationGradCompute(const nnvm::NodeAttrs& attrs,
const std::vector<OpReqType>& req,
const std::vector<TBlob>& outputs) {
const ActivationParam& param = nnvm::get<ActivationParam>(attrs.parsed);
+
+ const int act_type = param.act_type;
#if (MXNET_USE_CUDNN == 1 || MXNET_USE_MKLDNN == 1)
- bool relu = param.act_type == activation::kReLU;
- CHECK_EQ(inputs.size(), relu ? 2U : 3U);
+ if (act_type != activation::kReLU && act_type != activation::kSoftSign) {
+ CHECK_EQ(inputs.size(), 3U);
+ } else {
+ CHECK_EQ(inputs.size(), 2U);
+ }
#else
- bool softsign = param.act_type == activation::kSoftSign;
- CHECK_EQ(inputs.size(), softsign ? 3U : 2U);
+ if (act_type == activation::kSoftSign) {
+ CHECK_EQ(inputs.size(), 3U);
+ } else {
+ CHECK_EQ(inputs.size(), 2U);
+ }
#endif
CHECK_EQ(outputs.size(), 1U);
CHECK_EQ(req.size(), 1U);
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