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SETI MB CUDA for Linux
Terror Australis:
Hi All,
As posted on the SAH board.
I've just put a new cruncher together. QX9650, Gigabyte X38 Mobo, Mandriva 2010.2 PWP Linux, 260.10 Drivers (the latest in the Mandriva repository) BOINC 6.10.58, Aarons Linux App and 2 GTX580's.
My problem is this. The system and BOINC both recognise there are 2 video cards and BOINC runs 2 GPU units. However they are both running on the one card. It's the card in the first PCIE socket that's doing all the work. The one in socket 2 stays dead cold. Using a cc_config file made no difference
Other things I've noticed.
In the xorg.conf files the Busses/Sockets are transposed, Socket 1 appears as socket 2 and visa versa. If I only use one card the system behaves perfectly.
Swapping the cards made no difference, it's still only slot 1 that does work
Any clues from the Linux fraternity ?
T.A.
sunu:
--- Quote from: Terror Australis on 08 Jul 2011, 09:04:01 am ---My problem is this. The system and BOINC both recognise there are 2 video cards and BOINC runs 2 GPU units. However they are both running on the one card. It's the card in the first PCIE socket that's doing all the work. The one in socket 2 stays dead cold. Using a cc_config file made no difference
--- End quote ---
Your tasks say otherwise:
Device1: http://setiathome.berkeley.edu/result.php?resultid=1986746872
Device2: http://setiathome.berkeley.edu/result.php?resultid=1986700701
Terror Australis:
Thats my point. As far as the system is concerned it IS using two cards, but it appears that the second card BOINC uses is a "virtual" card that running on the card in slot 1.
The second card is way too cold to be doing any work. The NVidia monitor reports a temp of 60deg for card one and a temp of 30 for card 2. I can't believe a GTX580 running at full blat would run that cool :)
The crunching times compare to those that are running 2 tasks on the one card as well. Time drops by half when only one card is fitted and only one task is running.
sunu:
Now I get it.
Give me the output of :
ps -o cmd --no-headers -p $(pgrep setiathome)
and
nvidia-smi -q
Also post your xorg.conf and your xorg log.
I've never used a distribution provided nvidia driver. I always use nvidia's own driver. That latest official version is 275.09.07. Try that.
Terror Australis:
--- Quote from: sunu on 08 Jul 2011, 11:24:33 am ---Now I get it.
Give me the output of :
ps -o cmd --no-headers -p $(pgrep setiathome)
and
nvidia-smi -q
--- End quote ---
Why didn't you just say you wanted the Driver version and the CUDA app ? :D
V260.16 driver and setiathome-6.11.x86_64-pc-linux-gnu_cuda32 app
Also post your xorg.conf and your xorg log.
I've never used a distribution provided nvidia driver. I always use nvidia's own driver. That latest official version is 275.09.07. Try that.
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