GPU crunching
29 May 2012 23:43:57 UTC
Topic 196365
(moderation:
A question about production. I have a small GPU (GT 430} and recently went from 1 task to running 2 at the same time and my RAC has gone from apx 7400 to a bit over 8000. Is this the expected gain?
GPU crunching
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Ive used a GT430 (PCIe, 1 MB) on a C2D of 3.0Ghz and my RAC was about 10K running 2 WUS on the GPU (while using also both CPU cores).
Bear in mind that it takes around one month for the RAC to get stable after any change... So if you changed this setting recently then its perfectly normal to see the RAC stepping up (or down) just a little...
Hi! The rule of thumb is
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Hi!
The rule of thumb is that the more powerful the card, the more gain (percentage wise) you get by running several units in parallel.
A low end card with "just" 96 CUDA cores can still compute a BRP4 job much faster than on the CPU, but the app almost saturates the card: you should see a rather high GPU load (e.g. with tools like GPU-Z). More powerful cards are much faster to keep "fed" all the time, and they will benefit the most by running several jobs in parallel.
For your host, I found one older GPU task that seems to be from the time of running just 1 task, and this one took about 5500 seconds. Your current tasks (but two in parallel) seem to require ca 10700 or so on average....so there is no big improvement actually.
As all jobs earn you 500 credits, and there are 86400 seconds in a day, you can expect to earn ca
86400 / 10700 * 2 * 500 =~ 8075 credits per day just by GPU tasks if your PC runs 24/7. With additional CPU jobs you could get between 1000 and 2000 more credits per day I'd guess.
Cheers
HB
RE: Ive used a GT430 (PCIe,
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Didn't know they still made them with that little memory. ;-)
RE: RE: Ive used a GT430
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LOL... It took me a while to understand what you mean...
Of course, even when it is a really cheap GPU, it has 1 GB not 1 MB. ;-D
Well, we've come a long way
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Well, we've come a long way since the original PC 640K main memory too ... or ( main ) memory mapped graphics for that matter. But yeah the prices are way cheaper now.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal