crossfire Gpu support

Author	Message
Gerry Send message Joined: 29 May 15 Posts: 84 Credit: 4,956,983 RAC: 0	Message 1712267 - Posted: 13 Aug 2015, 13:14:56 UTC quick question,just bought a 2nd 290x too crossfire,arrives next week. Will SETI utilize both GPU's automatically? ID: 1712267 ·

rob smith Volunteer moderator Volunteer tester Send message Joined: 7 Mar 03 Posts: 22200 Credit: 416,307,556 RAC: 380	Message 1712281 - Posted: 13 Aug 2015, 14:01:58 UTC Not sure about when using Crossfire, but as independent cards BOINC will see them both and, provided you have "use all GPUs" set (I think that is the default) then SETI will run on both cards. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? ID: 1712281 ·

HAL9000 Volunteer tester Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57	Message 1712338 - Posted: 13 Aug 2015, 15:42:34 UTC You may actually need to disable crossfire in the driver when running SETI@home. The last time I tested running with crossfire enabled I ended up with trashed work. However newer drivers may resolve the issue. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ ID: 1712338 ·

Jord Volunteer tester Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3	Message 1712348 - Posted: 13 Aug 2015, 15:57:52 UTC - in response to Message 1712281. ...provided you have "use all GPUs" set (I think that is the default)... No. Use the best GPU is the default, but in this case with both GPUs being identical, they'll be both used by default. As long as the correct drivers have been installed, etc. ID: 1712348 ·

Louis Loria II Volunteer tester Send message Joined: 20 Oct 03 Posts: 259 Credit: 9,208,040 RAC: 24	Message 1712364 - Posted: 13 Aug 2015, 16:18:07 UTC - in response to Message 1712348. ...provided you have "use all GPUs" set (I think that is the default)... No. Use the best GPU is the default, but in this case with both GPUs being identical, they'll be both used by default. As long as the correct drivers have been installed, etc. I have two R9 280Xs and I'm pretty sure I have crossfire enabled. It doesn't help with SETI of course. I can double check this evening. I play HAWKEN, therefore I'm pretty sure xfire is enabled. As for drivers, Win 10 Pro and CCC 15.XX (the latest) and no problems. Skip over to the thread; Optimizing GPUs for more info. ID: 1712364 ·

Gerry Send message Joined: 29 May 15 Posts: 84 Credit: 4,956,983 RAC: 0	Message 1712367 - Posted: 13 Aug 2015, 16:22:22 UTC thanks everyone ID: 1712367 ·

woohoo Volunteer tester Send message Joined: 30 Oct 13 Posts: 972 Credit: 165,671,404 RAC: 5	Message 1712373 - Posted: 13 Aug 2015, 16:33:41 UTC usually when you drop the second card in, crossfire will be automatically enabled and seti@home will still work. feel free to play with the settings but in my experience seti@home works slightly faster with crossfire turned off. ID: 1712373 ·

Louis Loria II Volunteer tester Send message Joined: 20 Oct 03 Posts: 259 Credit: 9,208,040 RAC: 24	Message 1712530 - Posted: 13 Aug 2015, 21:20:00 UTC - in response to Message 1712373. usually when you drop the second card in, crossfire will be automatically enabled and seti@home will still work. feel free to play with the settings but in my experience seti@home works slightly faster with crossfire turned off. O.K., so I was running X-fire. I have turned it off to just to see what happens... ID: 1712530 ·

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