Thread 'BOINC not using my 11 GPUs (only 8)'

Message boards : Questions and problems : BOINC not using my 11 GPUs (only 8)
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Author	Message
geesu Send message Joined: 14 Nov 18 Posts: 3	Message 88857 - Posted: 14 Nov 2018, 22:29:32 UTC I have configured my cc_config to have <use_all_gpus>1</use_all_gpus> but it's only use 8 of the 11 GPUs. From googling, I suspect this is due to my CPU only having 8 cores? Is there a way to get past this limitation so I can use all 11 GPUs? ID: 88857 ·
Dave Help desk expert Send message Joined: 28 Jun 10 Posts: 2842	Message 88858 - Posted: 15 Nov 2018, 7:45:53 UTC - in response to Message 88857.   No answers but my instinct is it may be that this is a limitation of the cpu rather than BOINC. I could also imagine that especially if all 8 cores are crunching as well, you may well find that i/o is the limiting factor rather than processing power. ID: 88858 ·
Richie Send message Joined: 2 Jul 14 Posts: 186	Message 88859 - Posted: 15 Nov 2018, 11:40:06 UTC What work are you running with those GPUs? Which project? There might be a possibility to tweak app_config so that every GPU tasks would use smaller fraction of a core than what the default setting in that application is. ID: 88859 ·
geesu Send message Joined: 14 Nov 18 Posts: 3	Message 88864 - Posted: 15 Nov 2018, 16:45:51 UTC I'm running tasks from: GPUGRID, Einstein, Rosetta, Asteroids, WUProp (non-CPU-intensive), Milkyway, collatz ID: 88864 ·
geesu Send message Joined: 14 Nov 18 Posts: 3	Message 89012 - Posted: 24 Nov 2018, 15:49:45 UTC Any suggestion on how to split the CPU better so all GPUs are in use? ID: 89012 ·
Jord Volunteer tester Help desk expert Send message Joined: 29 Aug 05 Posts: 15632	Message 89018 - Posted: 24 Nov 2018, 19:57:41 UTC - in response to Message 89012.   What kind of CPU do you have? Does it output enough PCIe lanes needed by all the GPUs? How are the GPUs connected, at what slots? ID: 89018 ·

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