marcoabreu commented on a change in pull request #16408: Add MXNet Ops for fast 
multihead attention
URL: https://github.com/apache/incubator-mxnet/pull/16408#discussion_r341186884
 
 

 ##########
 File path: src/operator/contrib/transformer-inl.h
 ##########
 @@ -34,6 +34,19 @@
 namespace mxnet {
 namespace op {
 
+struct InterleavedMatMulParam : public dmlc::Parameter<InterleavedMatMulParam> 
{
+  int heads;
+  bool bwd_ignore_zero_init;
+  DMLC_DECLARE_PARAMETER(InterleavedMatMulParam) {
+    DMLC_DECLARE_FIELD(heads)
+    .describe("Set number of heads");
+    DMLC_DECLARE_FIELD(bwd_ignore_zero_init)
+    .describe("Make backward pass ignore AddTo and not init to 0. "
+              " /!\\ Only enable with MXNET_ENABLE_EXEC_ADDTO fonctionality")
 
 Review comment:
   Do you envision that to happen in regular use cases? In case you don't want 
to raise an exception, we could still print a warning in case the flag is not 
set

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