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SETI MB CUDA for Linux
Raistmer:
vlar has 2 somewhat interrelated problems - very long kernel time (this leads to sluggishness, GPU locks and so on) and very low multiprocessor usage by some (same actually) kernel calls (this leads to very poor performance for VLAR tasks). GPU acts mostly as single-core CPU, not as huge-core one for this tasks. That is, the more MultiProcessors GPU has (the "cooler" it is) the bigger performance hit it experiences.
riofl:
WOW! i finally upgraded enough libraries to get cuda 2.3 working right with a 190.53 driver and the processing times have literally cut in half! typically they have been 30 min per wu for a long time. now they average 15min... sheesh!
now i just have to take my system down for a day or 2 to fully ujpgrade the o/s and kde to v4. im allowing so long a time because i expect some breakage from this since the system has not been fully updated in a year or a bit more. so i may not be replying to anything until sometime saturday.
i was also using march=native in the compiler cflags and switched it to core2 when i realized native shuts off all the sse* capabilities. so far ive only done nvidia stuff and the 2.6.31 kernel upgrade. now i have to do the rest. response of the system is noticably better already.
sunu:
Very nice riofl. The New Year brings new performance! :)
riofl:
whelp. i guess i am doomed for cuda 2.2 for this machine. 2.3 worked fine with my old install of the o/s and kde 3.5 after i upgraded and went to kde 4.3.3 it blew apart and boinc kept giving instant computation errors off my gtx285 and a slew more than normal off the tesla too. by the time i was able to stop it i must have wasted more than 100 workunits with 'computation error' and since the tasks section has not updated since dec 31, i cannot look to see what the errors were :(
i expect kde is taking a ton more video resources even after i disabled more than half of kde so i returned to cuda 2.2 and its working just fine now... at least it is working on workunits instead of just trashing them.. time will tell...
guess as long as i continue using this machine i cannot get truly serious about crunching unless i go to some weaker desktop or i sit and waste days and days figuring out fvwm which from what i understand...
oh well...
Claggy:
The tasks section might not have been updated since dec 31, but the results will have been,
you just have to find which result you want to look at. ;D
Claggy
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