mozga-intel commented on a change in pull request #20621:
URL: https://github.com/apache/incubator-mxnet/pull/20621#discussion_r744752804
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File path: src/operator/nn/dnnl/dnnl_concat-inl.h
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@@ -52,13 +52,18 @@ class DNNLConcatFwd {
static DNNLConcatFwd& GetConcatForward(int concat_dim,
const std::vector<NDArray>& in_data,
- const std::vector<dnnl::memory::desc>&
data_md) {
+ const std::vector<dnnl::memory::desc>&
data_md,
+ int cache_dim = -1) {
#if DMLC_CXX11_THREAD_LOCAL
static thread_local std::unordered_map<OpSignature, DNNLConcatFwd, OpHash>
fwds;
#else
static MX_THREAD_LOCAL std::unordered_map<OpSignature, DNNLConcatFwd,
OpHash> fwds;
#endif
+ if (cache_dim == -1) {
+ cache_dim = concat_dim;
Review comment:
What is the advantage of adding the same value here (twofold: cache_dim
if cache_dim == 1)?
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