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Message boards : Number crunching : Mixing GK110 and GK104

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Message 33242 - Posted: 28 Sep 2013 | 22:47:26 UTC

I recently add a GTX 780 to a machine with a 770 and a 690, and the GK104 cards, despite correctly installed,are not in use by BOINC. BOINC says "not in use". I recall something about BOINC chosing just the fastest card on a machine and ignoring others. There is any command that I must add to cc_config or something?

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Message 33243 - Posted: 28 Sep 2013 | 23:21:29 UTC

If it chose just the fastest card, only the 690 would work. I am personally not the most informed on this topic. But I'll do some digging in case no one answers first.

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Message 33244 - Posted: 28 Sep 2013 | 23:24:44 UTC

<use_all_gpus>1</use_all_gpus>in the "options" section of the config file, stop and restart BOINC.

first thing I found.

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Message 33245 - Posted: 28 Sep 2013 | 23:40:01 UTC - in response to Message 33244.

Yeah, I will try that and let you know. In fact it seems boinc choose the fastest GPU, not "card", by the measured GFLOPS

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Message 33246 - Posted: 28 Sep 2013 | 23:54:01 UTC - in response to Message 33244.

<use_all_gpus>1</use_all_gpus>in the "options" section of the config file, stop and restart BOINC.

first thing I found.

That does the trick mate, ty. Let´s see how it performs now against a 770 and a 690 that are in the same host.
http://www.gpugrid.net/show_host_detail.php?hostid=145900

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Message 33250 - Posted: 29 Sep 2013 | 8:27:01 UTC - in response to Message 33246.

Let SK know if your observations differ from what he's gathered so far.

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Message 33253 - Posted: 29 Sep 2013 | 12:54:24 UTC
Last modified: 29 Sep 2013 | 12:54:54 UTC

Will do. But yesterday I receive a distress call from my SETI group, GPUUG, and they are needing me for a bit of time. So I will take a break from GPUGRID (sadly), but will keep improving my hosts, and by the time im back, it may be for another couple of years season.
Keep on the good crunching works guys, we really need medicine improvements. Best regards to all of you.

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Message 33254 - Posted: 29 Sep 2013 | 13:34:07 UTC

FireHawk, that host of yours with the 690 and the 770 is interesting as 690's times are quite close of 770's. Could you post the spec of both cards?. Thanks.

Btw, sad that you leave GPUGRID

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Message 33260 - Posted: 29 Sep 2013 | 18:47:13 UTC - in response to Message 33254.

The time are closer because the 690 runs with 1160mhz at GPU and a 600mhz memory overclock. pretty close to the stocks setting of the 770, hence the close times.

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Message 33263 - Posted: 29 Sep 2013 | 19:21:38 UTC - in response to Message 33260.

Thanks for the confirmation. Some cards boost very high, so anything non-reference is going to look anomalous/make the table look out.

PS. Firehawk is not leaving, he's just going on sabbatical ;)

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Message 33265 - Posted: 29 Sep 2013 | 19:59:21 UTC

I heard SETI has trouble with work supply.. so be sure to keep GPU-Grid as backup ;)

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Message boards : Number crunching : Mixing GK110 and GK104

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