I would be opposed to BOINC telling me I can't use my 8400 GS because it might overheat. If it is decided that it is a good idea and they should be banned, then BOINC should not allow crunching on laptops, cell phones, etc. because they also tend to overheat. Or, we let users decide whether to crunch or not and allow them to tune the GPU apps such that they can run at whatever temperatures they are comfortable with.
Jon Sonntag On Sat, Mar 16, 2013 at 4:49 AM, <[email protected]> wrote: > While testing an HP m9047c (completely stock hardware - never overclocked) > for boinc alpha, I upgraded some drivers and somehow 7.0.56 of the boinc > client started detecting that it could run OpenCL jobs on the machine > which has a "NVIDIA GeForce 8400 GS (256MB) driver: 314.07" GPU which had > previously gone undetected until a series of driver updates. I was > surprised that with so little memory, Seti assigned it 2 "AstroPulse v6 > v6.04 (opencl_nvidia_100)" tasks. > > Seti machine: 4719778 > http://setiathome.berkeley.edu/show_host_detail.php?hostid=4719778 > > Fortunately, through just blind good luck, I was on the machine when the > huge Seti download finally finished and watched to see how it did. It was > working ok in the boinc manager but I decided to see what was happening > with GPU-z. It was reaching over 90% GPU utilization and about 48% memory > bandwidth utilization. However, after watching the temperature for the GPU > chip climb through 107 degrees C, I suspended GPU processing and set the > <no_gpus> flag in cc_config.xml. I aborted the running job and the second > job aborted with a status of "201 (0xc9) EXIT_MISSING_COPROC". I restarted > the boinc client. > > Old nVidia chips are known in the trade press as having problems at high > temps because of a mismatch in the internal expansion properties resulting > in breakage. I know this was mentioned for the 65nm and 55nm chips in a > 2008 article but I don't know about these chips, which are 80 nm IIRC. You > can read some reprints of the bumpgate articles starting at the address > below. > > http://semiaccurate.com/2010/07/11/why-nvidias-chips-are-defective/ > > If it was me, I'd refuse to let the boinc client recognize these chips as > usable GPUs. > > David Ball > > > _______________________________________________ > boinc_dev mailing list > [email protected] > http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev > To unsubscribe, visit the above URL and > (near bottom of page) enter your email address. > _______________________________________________ boinc_dev mailing list [email protected] http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev To unsubscribe, visit the above URL and (near bottom of page) enter your email address.
