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Parallella Community Supercomputing for Everyone 2016-03-25T09:35:42+00:00 https://parallella.org/forums/feed.php?f=18&t=3472 2016-03-25T09:35:42+00:00 2016-03-25T09:35:42+00:00 https://parallella.org/forums/viewtopic.php?t=3472&p=17218#p17218 <![CDATA[Re: MPI with stdcl and without coprthr?]]> Statistics: Posted by nickoppen — Fri Mar 25, 2016 9:35 am

]]> 2016-03-25T05:24:24+00:00 2016-03-25T05:24:24+00:00 https://parallella.org/forums/viewtopic.php?t=3472&p=17216#p17216 <![CDATA[Re: MPI with stdcl and without coprthr?]]> I defined a 48,48,34 network and it worked well, the predict process will cost ~0.15s(forka executing time), but in ARM a same topology network based on opencv only need ~0.02s. I changed the cl code to make the "forwardPass" run 2 to 100 times in "k_forward", the forka time only increased ~0.005s*n. Is that means the forward predict process only cost ~0.005s in Epiphany, and the data movement cost most of the other time? If that is true, do you think there is any way to reduce the time cost?

Statistics: Posted by leonfg — Fri Mar 25, 2016 5:24 am

]]> 2016-03-08T22:59:07+00:00 2016-03-08T22:59:07+00:00 https://parallella.org/forums/viewtopic.php?t=3472&p=16970#p16970 <![CDATA[Re: MPI with stdcl and without coprthr?]]>
I'll give it a go. There's a lot of stuff in the cldebug output so I'll make up my mind pretty quickly to either pursue it or just bite the bullet and go with coprthr.

nick

Statistics: Posted by nickoppen — Tue Mar 08, 2016 10:59 pm

]]> 2016-03-08T02:46:14+00:00 2016-03-08T02:46:14+00:00 https://parallella.org/forums/viewtopic.php?t=3472&p=16892#p16892 <![CDATA[Re: MPI with stdcl and without coprthr?]]> Statistics: Posted by jar — Tue Mar 08, 2016 2:46 am

]]> 2016-03-07T23:47:03+00:00 2016-03-07T23:47:03+00:00 https://parallella.org/forums/viewtopic.php?t=3472&p=16891#p16891 <![CDATA[MPI with stdcl and without coprthr?]]>
I'm trying to get a performance test running and I always get JIT compiler errors when I run my test system even though the kernel is linked. The examples nbody_mpi and mpi_fft2d use coprthr and I'm wondering if that is a requirement.

nick

Statistics: Posted by nickoppen — Mon Mar 07, 2016 11:47 pm

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