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multiple GPUs with Accelerate

 
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Tuan



Joined: 11 Jun 2009
Posts: 233

PostPosted: Wed Nov 25, 2009 6:08 am    Post subject: multiple GPUs with Accelerate Reply with quote

Im not sure if Accelerate in Fortran 10 support multiple GPUs automatically.

In both cases, are there any technical resources that I can references?

Thanks,
Tuan
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mkcolg



Joined: 30 Jun 2004
Posts: 6218
Location: The Portland Group Inc.

PostPosted: Wed Nov 25, 2009 9:31 am    Post subject: Reply with quote

Hi Tuan,

Currently NVIDIA only allow a single host thread/process to access a single GPU at a time. So in order to use multiple GPUs, you need to add a higher level of parallelization (OpenMP, MPI, pthreads, etc.).

Things aren't yet as seem less with OpenMP as we'ed like. So you will need to distribute the work to each thread. Eventually we'll have the compiler do this for you.

Hope this helps,
Mat
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