Multithreaded BOINC application questions

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Profile Coleslaw

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Message 37137 - Posted: 23 Jun 2014, 20:37:22 UTC

Has there been any updates in this area? I ask because some of my team have switched from FAH and have came here and to a few other projects. A lot of them had server grade equipment with multiple processors that they were used to running MT apps on. Switching to running several single apps is a big change for them. I just wanted to know if this is possibly the next phase to the recent CPU release.
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Message 37438 - Posted: 27 Jul 2014, 8:46:41 UTC - in response to Message 37137.  

Hello I got a multi-threaded CPU test app yesterday and each time I restart BOINC I seem to lose all the progress, is that normal? BOINC estimates 84 hours to complete, so if this is the case I will have to abort as I dont run 24/7.

Thanks.


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Message 37439 - Posted: 27 Jul 2014, 8:59:32 UTC - in response to Message 37438.  


Hello I got a multi-threaded CPU test app yesterday and each time I restart BOINC I seem to lose all the progress, is that normal? BOINC estimates 84 hours to complete, so if this is the case I will have to abort as I dont run 24/7.


The app is checkpointng correctly but the progress reporting is broken, so the end estimates are incorrect. WUs should complete in between 1 and 8hr depending on your CPU.

Matt
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Message 37441 - Posted: 27 Jul 2014, 11:00:15 UTC - in response to Message 37439.  

Yes you are correct, it completed, thanks.
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Jacob Klein

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Message 37470 - Posted: 29 Jul 2014, 1:43:15 UTC
Last modified: 29 Jul 2014, 1:43:45 UTC

MJH,

Are you absolutely sure it's checkpointing correctly? I'm getting these multithreading tasks too now, on some of my laptops, and... well, they'll go for hours, and if I look at the "CPU time last checkpoint" it'll indicate that it has never checkpointed!

I don't think checkpointing is working correctly -- is it?
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Message 37477 - Posted: 29 Jul 2014, 9:32:15 UTC

Jacob,

the app does checkpoint every 15 minutes, but it doesn't do it through BOINC so BOINC doesn't know about it.
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Message 37478 - Posted: 29 Jul 2014, 11:26:13 UTC - in response to Message 37470.  

Yes, it is. 845 and earlier don't report that they've checkpointed to BOINC. 846 will fix that.

Matt
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Jacob Klein

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Message 37481 - Posted: 29 Jul 2014, 12:49:33 UTC - in response to Message 37478.  
Last modified: 29 Jul 2014, 12:50:57 UTC

Ah, so, it is checkpointing, but it's just not reporting it correctly to BOINC. I'd consider that "not working", but either way, it sounds like you guys are working to fix it. Thanks!

PS: It's nice to have my non-GPU laptops doing work for GPUGrid.
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Message 37486 - Posted: 29 Jul 2014, 15:51:55 UTC - in response to Message 37481.  

Please post further replies to the news thread about the new application.
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Message boards : Multicore CPUs : Multithreaded BOINC application questions

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