Forum > GPU crunching

Fighting the CUDA bug

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Richard Haselgrove:

--- Quote from: Raistmer on 30 Jun 2009, 04:30:29 pm ---Or make your tasks so fast that they will never need to checkpoint ;D ;D ;D

--- End quote ---

Are you volunteering to optimise the AQUA CUDA app? I've got one on my 9800GTX+ (84 GFLOPs) which is estimating 79 hours :o (and that's a big improvement - the last one took 89 hours).

Raistmer:

--- Quote from: Richard Haselgrove on 30 Jun 2009, 04:38:30 pm ---
--- Quote from: Raistmer on 30 Jun 2009, 04:30:29 pm ---Or make your tasks so fast that they will never need to checkpoint ;D ;D ;D

--- End quote ---

Are you volunteering to optimise the AQUA CUDA app? I've got one on my 9800GTX+ (84 GFLOPs) which is estimating 79 hours :o (and that's a big improvement - the last one took 89 hours).

--- End quote ---
Hehe, no-no-no, as Artifical Realm closed (w/o any explanation, sadly) SETI-only here for now ;)
Cause many users now do many BOINC projects, optimization of another project app will help speedup SETI too, but this is too peripheral way to target ;D

Claggy:

--- Quote from: Richard Haselgrove on 30 Jun 2009, 04:26:25 pm ---DA has recently 'checked in' (i.e. modified the source code, but not yet compiled a new version) a change: previously/currently, BOINC would leave a CUDA app in memory if it was preempted before the first checkpoint. In future, it will be cleaned out even if it has never checkpointed - so application developers, get your checkpointing code working early on in the development process.

--- End quote ---

DA has also 'checked in' another GPU related change after your question today.

Changeset 18531

Claggy

Richard Haselgrove:

--- Quote from: Claggy on 30 Jun 2009, 04:52:32 pm ---
DA has also 'checked in' another GPU related change after your question today.

Changeset 18531

Claggy

--- End quote ---

And he's had to fix his own typos

Changeset 18533

Band-aid time, I reckon - but it's a [tacit] acknowledgement of the FIFO bug.....

efmer (fred):
I had about  6 reboots this night. ;D  Today I got  one  just in time to see something, because it happens really quick.  I did an exit on the BOINC manager and checked Stop running science applications.
And that did indeed close them, so they are not crashed.
Starting BOINC again and everything works again... for the time being that is.

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