Hey,
After some investigations it looks like the problem is not with the GEMM
kernel but with the way the kernel is enqueued. It fails when A and B are
associated with the same handle in C = alpha*op(A)*op(A) + beta*C... (this
handle-checking feature is to allow for some optimizations in other kernels
such as those who compute complicated elementwise-functions : y =
element_prod(element_exp(x), x))
This bug seems simple to fix at first sight, but it's gonna be hard to
provide a good fix. I could tell the kernel to ignore the handle values for
GEMM and always consider C = alpha*op(A)*op(B) + beta*D, but then it
prevents me from doing pointer arithmetics with C and it'll have an
influence on register usage). I'll have to do a gemm-specific
handle-binding policy. I'll try to do it ASAP, but it may not come before
tomorrow since I have other things to do today, like getting the database
ready for Toby's benchmarks...
It looks like blas3_prod-test-opencl fails with timeout on centos5. This is
just SO strange.
Philippe
2014-07-07 11:38 GMT+02:00 Karl Rupp <r...@iue.tuwien.ac.at>:
> Hey,
>
> our Nightly tests report new issues with some examples, which are
> probably all due to GEMM:
> http://viennastar.iue.tuwien.ac.at/CDash/index.php?project=ViennaCL
> (also look at the previous day)
>
> Philippe, I see a bunch or recent commits. Is it possible that this got
> fixed in the meanwhile?
>
> Best regards,
> Karli
>
>
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Open source business process management suite built on Java and Eclipse
Turn processes into business applications with Bonita BPM Community Edition
Quickly connect people, data, and systems into organized workflows
Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft
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