BOINC not using my 11 GPUs (only 8)


Advanced search

Message boards : Questions and problems : BOINC not using my 11 GPUs (only 8)
Message board moderation

To post messages, you must log in.

AuthorMessage
geesu

Send message
Joined: 14 Nov 18
Posts: 3
United States
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 · Report as offensive
Profile Dave
Help desk expert

Send message
Joined: 28 Jun 10
Posts: 2533
United Kingdom
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 · Report as offensive
Profile Richie

Send message
Joined: 2 Jul 14
Posts: 186
Finland
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 · Report as offensive
geesu

Send message
Joined: 14 Nov 18
Posts: 3
United States
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 · Report as offensive
geesu

Send message
Joined: 14 Nov 18
Posts: 3
United States
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 · Report as offensive
Profile Jord
Volunteer tester
Help desk expert
Avatar

Send message
Joined: 29 Aug 05
Posts: 15480
Netherlands
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 · Report as offensive

Message boards : Questions and problems : BOINC not using my 11 GPUs (only 8)

Copyright © 2024 University of California.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.