GTX 750 Ti How many WUs?

Questions and Answers : GPU applications : GTX 750 Ti How many WUs?
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Profile Tom M
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Message 1552059 - Posted: 4 Aug 2014, 2:41:19 UTC
Last modified: 4 Aug 2014, 2:42:16 UTC

I have been running my GTX 750 Ti hosted on a what seems to be a middle of the road Xeon with 2 tasks at a time.

Its taking mine around from 12 minutes to upto a half an hour to process each Cuda50 file.

I was reading a thread with an identical title that is says it is 113 days old and wouldn't let me post/reply to the thread. They didn't mention which CudaXX file.

What made me wonder is they were talking about it taking 1.5 to 2.5 hours per Cuda file.

Am I getting unusually good performance or am I missing something? Or is the differentiation on the Nividia Gpu files that new?

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Tom
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Message 1552062 - Posted: 4 Aug 2014, 2:49:13 UTC - in response to Message 1552059.  

Post a link to the thread so we can see what thread you are speaking about.
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Message 1552166 - Posted: 4 Aug 2014, 12:30:07 UTC - in response to Message 1552062.  

http://setiathome.berkeley.edu/forum_thread.php?id=74561
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Message 1552185 - Posted: 4 Aug 2014, 13:19:34 UTC - in response to Message 1552166.  

That's what I thought.

I was talking about the Astropulses(AP) taking 1.6 hours when I do 2 of them at the same time on the 750. Multibeams(MB) cuda 42 take anywhere from 15-32 minutes. I run AMDs instead of Intel so that also plays a part in how fast it takes to crunch the work unit.

In short 2 APs on the 750 is what I found to work best. 2 Multibeams at a time on the 750. or 1 AP and 1 MB on the 750. That seems to be the consensus with all the other people I have talked to over the last few months. Cuda 50 is the best version for the GTX 750


Note, I was using CUDA42 on that computer at that time and had a pair of GTX 650 Ti Boost in there as well so I need to have a version of Cuda that was efficient for them. Since then, I've traded out those 650 for a pair of GTX 780SC and changed the Cuda to 50 so now I have 3 Multibeams on each card. If I only had the GTX 750s in there then it would still be 2 Multibeams per 750. . However I don't have separate config files for the 780s and 750s so that is why I run 3 MB as those 780s will kick out a MB in 8 minutes. As a result the 750 take 22-35 minutes ( longer than they would if I only had 2 MBs on each) but I figured with the 780s being so much faster that it makes up for the slower 750s.

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Message 1552352 - Posted: 4 Aug 2014, 21:41:19 UTC - in response to Message 1552185.  

Sorry I missed that. Makes a lot more sense now.
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Questions and Answers : GPU applications : GTX 750 Ti How many WUs?


 
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