Activation histogram net observer with multiple histogram files as output (#16855)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16855
Save the histogram of each net to a separate file
Reviewed By: jspark1105
Differential Revision: D13991610
fbshipit-source-id: a5be4e37a5e63567dcd7fdf99f451ee31bb350a5
