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Message boards : Proth Prime Search : What type of computation is used in ATI GPUs?

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StitchExperimen
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Message 64931 - Posted: 5 May 2013 | 7:44:46 UTC

What type of computing is used in a ATI HD 7950 GPU in this project?

I've been doing OpenCL in WCG Help Conquer Cancer (You can load 9 wu concurrently or more on a HD 7950). When run concurrently the work time was about 30 seconds, when run serial it took say 4 minutes per wu.
On the same project with a Nvidia 660 Ti using OpenCL basicly you can only run 1 wu at a time and the GPU is not very productive.

Thanks,
Bruce


StitchExperimen
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Joined: 12 Mar 13
Posts: 15
ID: 204252
Credit: 8,599,203
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PPS LLR Silver: Earned 100,000 credits (313,285)PPS Sieve Turquoise: Earned 5,000,000 credits (8,285,918)
Message 64932 - Posted: 5 May 2013 | 7:51:00 UTC

Also my time is about 30 minutes to finish a wu.
How long does it take on a Nvidia 660Ti?

Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Turquoise: Earned 5,000,000 credits (5,009,577)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Jade: Earned 10,000,000 credits (15,527,037)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (34,291,181)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (2,276,330)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (74,703,799)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 64938 - Posted: 5 May 2013 | 11:20:00 UTC - in response to Message 64931.

What type of computing is used in a ATI HD 7950 GPU in this project?

I've been doing OpenCL in WCG Help Conquer Cancer (You can load 9 wu concurrently or more on a HD 7950). When run concurrently the work time was about 30 seconds, when run serial it took say 4 minutes per wu.
On the same project with a Nvidia 660 Ti using OpenCL basicly you can only run 1 wu at a time and the GPU is not very productive.

Thanks,
Bruce




There's currently only one project for ATI GPUs, an OpenCL app for the PPS sieve. There probably is no advantage, or at best a very, very small improvement, when running more than one copy of our GPU apps simultaneously. Running just one instance is recommended.
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StitchExperimen
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Joined: 12 Mar 13
Posts: 15
ID: 204252
Credit: 8,599,203
RAC: 0
PPS LLR Silver: Earned 100,000 credits (313,285)PPS Sieve Turquoise: Earned 5,000,000 credits (8,285,918)
Message 64945 - Posted: 5 May 2013 | 13:55:49 UTC

Thanks for the reply.
Now that I know it is OpenCL I will try to overclock because in the other project under OpenCL I was able to run at 1200 @ stock voltage and right now I'm only at 1050 (non-gaming which I run lower and in CrossfireX).

Message boards : Proth Prime Search : What type of computation is used in ATI GPUs?

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