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Subject [GitHub] [singa] dcslin commented on issue #591: Dev branch cpu training problem (with conv and pool)
Date Thu, 20 Feb 2020 05:46:56 GMT
dcslin commented on issue #591: Dev branch cpu training problem (with conv and pool)
URL: https://github.com/apache/singa/issues/591#issuecomment-588621215
 
 
   > > Hi @chrishkchris , I am still working on this issue, but I am encountering something
very weird.
   > > I borrow the code from dnnl example and testing result shows similar performance
compared to mkldnn(conv forward in 5000~microsec).
   > > However, after some modification to the example code(just introducing Singa Tensor
[dcslin/singa@06ec6ce](https://github.com/dcslin/singa/commit/06ec6ce)), I still can get reasonable
performance(conv forward in 5000~ microsec). But the weird part is, the result is not stable,
out of 10 times testing, segmentation fault appear ~6 times.
   > 
   > I run your example code but did not find any problem, it display mytestok. The last
segmentation fault of "double free" is due to freeing of variables.
   > 
   > ```
   > [ RUN      ] MYTEST.Forward
   > [total]Time difference = 58228[mu s]
   > [avg]Time difference = 582[mu s]
   > mytestok
   > double free or corruption (!prev)
   > Aborted (core dumped)
   > ```
   
   do you how to fix this?

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