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Message boards : Proth Prime Search : Mass Failure with v1.38 on ATI HD5770

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Brian Priebe
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Joined: 10 Dec 10
Posts: 7
ID: 76342
Credit: 1,323,516
RAC: 0
SoB LLR Bronze: Earned 10,000 credits (13,000)PPS Sieve Amethyst: Earned 1,000,000 credits (1,288,984)
Message 32794 - Posted: 13 Feb 2011 | 7:10:45 UTC

I am getting "computation errors" by the dozen after only a few seconds of run-time. (Reference computer ID 174029.) The WU report is invariably of the form:

Sieve started: 25004806000000000 <= p < 25004812000000000 Thread 0 starting Detected 160 multiprocessors (800 SPUs) on device 0. Computation Error: no candidates found for p=25004806000132379 between 2629725 and 3000000. 01:54:08 (1056): called boinc_finish


This is running under Windows 7 64-bit with the latest Catalyst 11.1 package.

Any ideas?

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Profile rroonnaallddProject donor
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Joined: 3 Jul 09
Posts: 1213
ID: 42893
Credit: 34,634,263
RAC: 0
321 LLR Silver: Earned 100,000 credits (101,692)Cullen LLR Silver: Earned 100,000 credits (104,876)ESP LLR Silver: Earned 100,000 credits (101,979)PPS LLR Silver: Earned 100,000 credits (148,018)PSP LLR Silver: Earned 100,000 credits (140,441)SoB LLR Silver: Earned 100,000 credits (119,475)SR5 LLR Silver: Earned 100,000 credits (120,939)SGS LLR Silver: Earned 100,000 credits (122,783)TRP LLR Silver: Earned 100,000 credits (100,115)Woodall LLR Silver: Earned 100,000 credits (107,459)321 Sieve Silver: Earned 100,000 credits (202,757)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,908,135)PPS Sieve Sapphire: Earned 20,000,000 credits (25,450,104)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (130,966)TRP Sieve (suspended) Silver: Earned 100,000 credits (201,525)AP 26/27 Silver: Earned 100,000 credits (100,015)GFN Silver: Earned 100,000 credits (246,369)PSA Silver: Earned 100,000 credits (226,594)
Message 32799 - Posted: 13 Feb 2011 | 10:15:58 UTC - in response to Message 32794.

Maybe a bug in OpenCL? Have you tried an older APP-driver?
____________
Best wishes. Knowledge is power. by jjwhalen

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Brook HarsteProject donor
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Joined: 30 Nov 08
Posts: 1345
ID: 32401
Credit: 805,483,198
RAC: 0
Discovered 2 mega primesFound 1 prime in the 2019 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,334,077)Cullen LLR Turquoise: Earned 5,000,000 credits (5,010,955)ESP LLR Turquoise: Earned 5,000,000 credits (7,439,418)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,501,906)PPS LLR Sapphire: Earned 20,000,000 credits (26,697,006)PSP LLR Turquoise: Earned 5,000,000 credits (6,184,417)SoB LLR Jade: Earned 10,000,000 credits (12,120,365)SR5 LLR Turquoise: Earned 5,000,000 credits (9,234,440)SGS LLR Turquoise: Earned 5,000,000 credits (5,201,403)TRP LLR Turquoise: Earned 5,000,000 credits (5,628,223)Woodall LLR Turquoise: Earned 5,000,000 credits (5,061,985)321 Sieve Amethyst: Earned 1,000,000 credits (1,027,534)Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (17,370,919)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,014,372)PPS Sieve Double Bronze: Earned 100,000,000 credits (129,430,775)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,083,315)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,629,248)AP 26/27 Emerald: Earned 50,000,000 credits (56,876,924)GFN Double Silver: Earned 200,000,000 credits (286,079,854)PSA Double Silver: Earned 200,000,000 credits (200,556,062)
Message 32876 - Posted: 14 Feb 2011 | 18:05:39 UTC - in response to Message 32794.

I am getting "computation errors" by the dozen after only a few seconds of run-time. (Reference computer ID 174029.) The WU report is invariably of the form:

Sieve started: 25004806000000000 <= p < 25004812000000000 Thread 0 starting Detected 160 multiprocessors (800 SPUs) on device 0. Computation Error: no candidates found for p=25004806000132379 between 2629725 and 3000000. 01:54:08 (1056): called boinc_finish


This is running under Windows 7 64-bit with the latest Catalyst 11.1 package.

Any ideas?

I used to get the same thing when I also ran my GPU along with boinc'ing on my CPU.
If you are using boinc on your cpu, turn it off and see if the gpu finishes without errors. If it does slowly raise the amount of CPU threads used by boinc. On my i7 I can only use 4 out of the 8 threads for boinc while running the GPU.
____________

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Profile rroonnaallddProject donor
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Joined: 3 Jul 09
Posts: 1213
ID: 42893
Credit: 34,634,263
RAC: 0
321 LLR Silver: Earned 100,000 credits (101,692)Cullen LLR Silver: Earned 100,000 credits (104,876)ESP LLR Silver: Earned 100,000 credits (101,979)PPS LLR Silver: Earned 100,000 credits (148,018)PSP LLR Silver: Earned 100,000 credits (140,441)SoB LLR Silver: Earned 100,000 credits (119,475)SR5 LLR Silver: Earned 100,000 credits (120,939)SGS LLR Silver: Earned 100,000 credits (122,783)TRP LLR Silver: Earned 100,000 credits (100,115)Woodall LLR Silver: Earned 100,000 credits (107,459)321 Sieve Silver: Earned 100,000 credits (202,757)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,908,135)PPS Sieve Sapphire: Earned 20,000,000 credits (25,450,104)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (130,966)TRP Sieve (suspended) Silver: Earned 100,000 credits (201,525)AP 26/27 Silver: Earned 100,000 credits (100,015)GFN Silver: Earned 100,000 credits (246,369)PSA Silver: Earned 100,000 credits (226,594)
Message 32881 - Posted: 14 Feb 2011 | 19:11:20 UTC - in response to Message 32876.

I used to get the same thing when I also ran my GPU along with boinc'ing on my CPU.
If you are using boinc on your cpu, turn it off and see if the gpu finishes without errors. If it does slowly raise the amount of CPU threads used by boinc. On my i7 I can only use 4 out of the 8 threads for boinc while running the GPU.

The problem with OpenCL seems to be a higher cpu load to get the gpu filled and/or not all calculation can be done on gpu via OpenCL.
____________
Best wishes. Knowledge is power. by jjwhalen

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Profile VatoProject donor
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Joined: 2 Feb 08
Posts: 785
ID: 18447
Credit: 263,436,450
RAC: 0
Found 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,419,655)Cullen LLR Turquoise: Earned 5,000,000 credits (5,144,889)ESP LLR Ruby: Earned 2,000,000 credits (2,617,477)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,076,479)PPS LLR Turquoise: Earned 5,000,000 credits (9,222,176)PSP LLR Ruby: Earned 2,000,000 credits (3,600,078)SoB LLR Turquoise: Earned 5,000,000 credits (5,027,233)SR5 LLR Ruby: Earned 2,000,000 credits (2,982,194)SGS LLR Ruby: Earned 2,000,000 credits (3,188,094)TPS LLR (retired) Silver: Earned 100,000 credits (103,523)TRP LLR Ruby: Earned 2,000,000 credits (3,450,469)Woodall LLR Ruby: Earned 2,000,000 credits (2,147,072)321 Sieve Sapphire: Earned 20,000,000 credits (26,923,188)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,676,513)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,278,995)PPS Sieve Emerald: Earned 50,000,000 credits (50,357,616)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (4,080,177)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,221,054)AP 26/27 Sapphire: Earned 20,000,000 credits (20,020,744)GFN Emerald: Earned 50,000,000 credits (53,559,069)PSA Sapphire: Earned 20,000,000 credits (34,214,582)
Message 32893 - Posted: 14 Feb 2011 | 22:43:18 UTC - in response to Message 32881.

It's worse than that - between SDK 2.1 and 2.2, ATI/AMD altered behaviour (perhaps to fix a bug) by introducing a busy-wait i.e. the least efficient pile of crud on the planet - 100% usage to continually check that there is still nothing to do - I haven't met a busy-wait in almost two decades. It has coloured my future purchasing decisions such that they need to wait until all of the competition has annoyed me to the same level before I'll ever consider buying their h/w (which is fine - unlike the drivers) ever again.
____________

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Message boards : Proth Prime Search : Mass Failure with v1.38 on ATI HD5770

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