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Minh
Joined: 01 Mar 2013
Posts: 9
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 Posted: Wed Jun 05, 2013 7:49 pm Post subject: call to cuMemHostUnregister returned error 700 |
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Hello,
I have an error at runtime :
| Quote: | | call to cuMemHostUnregister returned error 700: Launch failed |
It is said that, this error comes in dereferencing an invalid device pointer or accessing out of bounds shared memory.
Do you have any suggestion to investigate the program further?
Thank you ,
Regards,
Minh |
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mkcolg
Joined: 30 Jun 2004
Posts: 4995
Location: The Portland Group Inc.
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| Posted: Thu Jun 06, 2013 1:27 pm Post subject: |
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Is this OpenACC? If yes, then look at the variables in your copy clauses. Are the correct bounds being used?
| Quote: | | Do you have any suggestion to investigate the program further? |
Set the environment variable "PGI_ACC_DEBUG=1". You will be flooded with information but it will show you the variable that's causing the error.
- Mat |
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