kshitij12345 edited a comment on issue #14938: Performance issue when use_bias=True URL: https://github.com/apache/incubator-mxnet/issues/14938#issuecomment-493782242 I may be terribly wrong about this but, https://github.com/apache/incubator-mxnet/blob/bd44ff48c4aff8458a67c44b032f82afbf4d52a5/src/operator/nn/fully_connected-inl.h#L162-L178 looking at the pattern here, assuming `sum_rows` is the culprit, maybe replacing the https://github.com/apache/incubator-mxnet/blob/bd44ff48c4aff8458a67c44b032f82afbf4d52a5/src/operator/nn/fully_connected-inl.h#L172 with `gemv` with a dummy ones vector for reduction may help. Any thoughts?
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