[resolved] Has anyone noticed significant slowdown after upgrading to v0.1.11?

Yesterday I upgraded my pytorch to v0.1.11. I ran the same training script. I noticed that the time for each batch has increased from 0.8 seconds to 2.9 seconds. Nothing is changed except the pytorch. My old version is 0.1.9+67f9455. Now I am trying to upgrade to cudnn v6 to see whether it could solve my isse. I wonder whether anyone had the same problem with me.


Problem solved! After I used the pre-built binary install, everything works as fast as usual. Before that, I was building the pytorch manually pulled from the master branch.

If I had to guess, you’re running on CPU and when compiled from source it wasn’t being linked properly with MKL.

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