PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Project Staging Area : duration of cuda wu

Author Message
kreislauf
Send message
Joined: 17 Dec 11
Posts: 2
ID: 123340
Credit: 6,335,833
RAC: 0
Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,369,516)PPS Sieve Gold: Earned 500,000 credits (957,364)
Message 45805 - Posted: 28 Dec 2011 | 17:04:35 UTC

hi, i am very frustrated about my oced 2 gtx 460s. they need around 27 minutes for PPS (Sieve) v1.39 (cuda23) WUs while running almost at 900 mhz and not even at default clocks.

in the table provided by scott here it should only take them 19 minutes.

that is a huge difference.
what exactly am i doing wrong?

i use windows 7 and my cards share 16 pci lanes (so 8x/8x)

Profile rebirther
Avatar
Send message
Joined: 10 Aug 05
Posts: 783
ID: 85
Credit: 175,774,608
RAC: 0
Eliminated 3 conjecture "k"s321 LLR Silver: Earned 100,000 credits (186,594)Cullen LLR Silver: Earned 100,000 credits (106,665)ESP LLR Gold: Earned 500,000 credits (502,416)PPS LLR Gold: Earned 500,000 credits (504,111)PSP LLR Gold: Earned 500,000 credits (513,785)SoB LLR Gold: Earned 500,000 credits (564,944)SR5 LLR Ruby: Earned 2,000,000 credits (2,790,118)SGS LLR Gold: Earned 500,000 credits (501,099)TPS LLR (retired) Bronze: Earned 10,000 credits (46,235)TRP LLR Gold: Earned 500,000 credits (708,706)Woodall LLR Silver: Earned 100,000 credits (133,626)321 Sieve Bronze: Earned 10,000 credits (21,527)Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (14,729,132)PPS Sieve Double Bronze: Earned 100,000,000 credits (132,786,707)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (510,317)TRP Sieve (suspended) Gold: Earned 500,000 credits (620,991)AP 26/27 Silver: Earned 100,000 credits (418,876)GFN Amethyst: Earned 1,000,000 credits (1,795,613)PSA Jade: Earned 10,000,000 credits (18,329,123)
Message 45807 - Posted: 28 Dec 2011 | 17:11:47 UTC - in response to Message 45805.
Last modified: 28 Dec 2011 | 17:12:55 UTC

8x is not 16x, so you can expect longer runtimes. Before the length was increased I needed around 24min / WU.

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13366
ID: 53948
Credit: 227,065,906
RAC: 113,045
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 (14,039,493)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 (74,173,186)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 45808 - Posted: 28 Dec 2011 | 17:15:35 UTC - in response to Message 45805.

hi, i am very frustrated about my oced 2 gtx 460s. they need around 27 minutes for PPS (Sieve) v1.39 (cuda23) WUs while running almost at 900 mhz and not even at default clocks.

in the table provided by scott here it should only take them 19 minutes.

that is a huge difference.
what exactly am i doing wrong?

i use windows 7 and my cards share 16 pci lanes (so 8x/8x)


Since Scott posted those numbers, the size of the WUs has increased by 50%, so you need to multiply his numbers by 1.5 to be relevant to the WUs you're seeing today.

That, alone, accounts for the difference in the numbers you're seeing.

I might have a suggestion that could make your card even faster. Maybe.

I have a 460 at stock clocks, and I noticed that the GeneferCUDA program got about a 10% speed improvement when I went from the 275.33 drivers to to 285.86 drivers.

I don't know if that will help you or not because GeneferCUDA uses double precision floating point math and also uses the CUDA FFT libraries. I'm not certain, but I think the sieves use integer arithmetic and don't use FFTs, so the programs are very, very different.
____________
My lucky number is 75898524288+1

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13366
ID: 53948
Credit: 227,065,906
RAC: 113,045
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 (14,039,493)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 (74,173,186)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 45809 - Posted: 28 Dec 2011 | 17:17:21 UTC - in response to Message 45807.

8x is not 16x, so you can expect longer runtimes. Before the length was increased I needed around 24min / WU.


The thinking is that the bandwidth is more or less irrelevant for our purposes, and the GPUs could probably run in a 1x slot without a noticeable affect on performance.
____________
My lucky number is 75898524288+1

kreislauf
Send message
Joined: 17 Dec 11
Posts: 2
ID: 123340
Credit: 6,335,833
RAC: 0
Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,369,516)PPS Sieve Gold: Earned 500,000 credits (957,364)
Message 45816 - Posted: 28 Dec 2011 | 19:41:43 UTC - in response to Message 45808.

@ Michael Goetz how long do your gtx 460 take to complete tasks? i couldn't find any infos in your profile

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13366
ID: 53948
Credit: 227,065,906
RAC: 113,045
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 (14,039,493)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 (74,173,186)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 45817 - Posted: 28 Dec 2011 | 19:54:07 UTC - in response to Message 45816.

Hmmmm......

Those WUs aren't in the database anymore, so going by memory I think it was about 33 minutes with the 275.33 drivers. I have not tried PPS Sieve with the 285.86 drivers. Also, I sometimes have all the CPU cores crunching, which may sometimes slow down the GPU. With overclocking and a free CPU core you could go faster.
____________
My lucky number is 75898524288+1

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13366
ID: 53948
Credit: 227,065,906
RAC: 113,045
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 (14,039,493)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 (74,173,186)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 45818 - Posted: 28 Dec 2011 | 20:01:02 UTC - in response to Message 45817.

At 27 minutes, you're running almost 20% faster than my GPU, which sounds about right for the overclocking.

I have heard that for this application it is not necessary to overclock the memory. Keep it at stock speed and reduce the power, heat, and noise with a negligible affect on speed.
____________
My lucky number is 75898524288+1

Message boards : Project Staging Area : duration of cuda wu

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2020 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.75, 1.57, 1.35
Generated 20 Oct 2020 | 3:19:03 UTC