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SETI MB CUDA for Linux
riofl:
--- Quote from: sunu on 21 Aug 2009, 06:48:26 am ---riofl, what is happening?
I've checked again your host today and I've seen this: http://setiathome.berkeley.edu/results.php?hostid=4166601&offset=40&show_names=0&state=2
All 2 hundred and 3 hundred sec tasks were done by your 285. All two-digit sec tasks were done by your tesla. This is completely abnormal.
--- End quote ---
since 6.9.0 reports 2 teslas, could it be possible it is mixing up which device is 0 and which is 1? because it is completely odd since the tesla is running gpu 500mhz and memory 900mhz so it should be considerably slower. it rates both devices it thinks are teslas at 74gflops yet the 285 is rated by 6.6.11 as 127gflops
i am going to reboot this tomorrow so when i do i am going to go over the settings in cmos. presently it is set to auto on pci-e bus frequency. maybe i will fix it at 100mhz .. it could be doing God knows what in auto.
riofl:
--- Quote from: lordvader on 21 Aug 2009, 08:23:01 pm ---Hi.
I was just wondering if there are any known issues in using the CUDA client with the 2.6.30 kernel ? I recently built a 2.6.30 kernel (to see if the AP units will fail), and noticed that my CUDA units were appreciably slower (taking over an hour).
I just switched back the latest ubuntu kernel (2.6.28-15-generic), which seems to work fine.
Any suggestions, any particular info you need ? I'm using the same nvidia driver in both cases (185.18.31, on an x86_64 platform)
--- End quote ---
i am using 2.6.29. and now that you mention it i have been having issues for a few weeks. i installed this on july 23rd. unfortunately i cannot remember far enough back since i have made so many other changes as well whether performance degraded then or not. i may try going back to my other kernel, 2.6.25 and see what happens.
riofl:
--- Quote from: sunu on 21 Aug 2009, 06:48:26 am ---riofl, what is happening?
I've checked again your host today and I've seen this: http://setiathome.berkeley.edu/results.php?hostid=4166601&offset=40&show_names=0&state=2
All 2 hundred and 3 hundred sec tasks were done by your 285. All two-digit sec tasks were done by your tesla. This is completely abnormal.
--- End quote ---
lordvader brought up an interesting point i have not even considered. july 23rd i switched from 2.6.25 to 2.6.29 kernel. that is close to the time i started having issues. i am going to try switching back tomorrow... unfortunately it will require some recompiling of the kernel and all modules and a few other things since with the switch to 2.6.29 i also switched gcc to 4.3.2
also maybe i missed something in getting rid of cuda 2.3. i guess a good manual inspection of things is in order tomorrow.
lordvader:
I'm gonna try a vanilla built 2.6.28.10 kernel, see if I get the same performance issues (and hopefully successfull AP units ...).
This is fun ! Damn I missed this stuff !
riofl:
--- Quote from: lordvader on 22 Aug 2009, 03:44:44 am ---I'm gonna try a vanilla built 2.6.28.10 kernel, see if I get the same performance issues (and hopefully successfull AP units ...).
This is fun ! Damn I missed this stuff !
--- End quote ---
used to be for me too until i started doing this stuff for a living.. now its just plain irritating when something doesnt go right the first time.
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