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PGI Accelerator async clause results in error
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xray



Joined: 21 Jan 2010
Posts: 85

PostPosted: Wed May 30, 2012 11:26 pm    Post subject: Reply with quote

Dear Mat,
Thanks for your notice. Yes, wit synchronous execution everything works fine. I didn't know this ACC_SYNCHRONOUS variable so far. What will happen if I set it to 0? Will then all kenrels execute asychronously (within the same stream) or the like?
I will try to send you part of my program next week.
Sandra
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mkcolg



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

PostPosted: Thu May 31, 2012 8:50 am    Post subject: Reply with quote

Quote:
What will happen if I set it to 0? Will then all kenrels execute asychronously (within the same stream) or the like?
Yes, provided that you use the async clause. This environment variable is mainly there for debugging purposes so you can disable async without having to change your code.


On a side note, I'm on the SPEC HPG committee and we're starting to look for OpenACC applications that could be used as benchmarks. Do you or anyone in your group have codes that might be good candidates?

- Mat
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