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Message boards : Generalized Cullen/Woodall prime search : GCW-LLR tasks are all inconclusive and/or invalid

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Per
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Joined: 22 Apr 17
Posts: 10
ID: 855954
Credit: 34,640,573
RAC: 229,538
321 LLR Gold: Earned 500,000 credits (987,751)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,805,067)PPS LLR Gold: Earned 500,000 credits (585,995)SGS LLR Silver: Earned 100,000 credits (384,846)TRP LLR Silver: Earned 100,000 credits (115,680)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,417,219)TRP Sieve (suspended) Silver: Earned 100,000 credits (403,677)AP 26/27 Gold: Earned 500,000 credits (566,020)GFN Sapphire: Earned 20,000,000 credits (28,379,657)
Message 109027 - Posted: 22 Jul 2017 | 8:03:18 UTC

Hello all - having trouble with GCW-LLR - some of my PCs are doing fine
but my http://www.primegrid.com/show_host_detail.php?hostid=874862
is only producing invalid or inconclusive tasks - I have removed all overclocks
and am closely monitoring thermals - no trouble there that I can see.

PC is 6950X on Asus Rampage V10 with 1080 GPUs (874862), passes memtest, Intel CPU checker, all BIOS and drivers up to date.

What should I try?

Per

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Joined: 16 Feb 10
Posts: 312
ID: 55391
Credit: 337,118,215
RAC: 195,836
321 LLR Ruby: Earned 2,000,000 credits (3,450,221)Cullen LLR Gold: Earned 500,000 credits (676,922)ESP LLR Amethyst: Earned 1,000,000 credits (1,021,827)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,715,268)PPS LLR Ruby: Earned 2,000,000 credits (3,264,119)PSP LLR Ruby: Earned 2,000,000 credits (3,138,070)SoB LLR Ruby: Earned 2,000,000 credits (3,016,075)SR5 LLR Turquoise: Earned 5,000,000 credits (5,071,131)SGS LLR Ruby: Earned 2,000,000 credits (2,860,720)TRP LLR Amethyst: Earned 1,000,000 credits (1,006,014)Woodall LLR Amethyst: Earned 1,000,000 credits (1,291,833)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,228,005)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,571,178)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,206,963)PPS Sieve Double Bronze: Earned 100,000,000 credits (140,018,477)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,165,888)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,071,454)AP 26/27 Ruby: Earned 2,000,000 credits (2,439,709)GFN Sapphire: Earned 20,000,000 credits (26,149,758)PSA Double Bronze: Earned 100,000,000 credits (102,758,261)
Message 109028 - Posted: 22 Jul 2017 | 9:24:42 UTC - in response to Message 109027.

I was having CPU task computation errors when I fully loaded the CPU with LLR until I boosted the CPU fan to 100% in the BIOS. Try that

Michael GoetzProject donor
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Project scientist
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Joined: 21 Jan 10
Posts: 9360
ID: 53948
Credit: 101,627,603
RAC: 21,863
321 LLR Amethyst: Earned 1,000,000 credits (1,169,719)Cullen LLR Amethyst: Earned 1,000,000 credits (1,157,331)ESP LLR Amethyst: Earned 1,000,000 credits (1,179,211)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,330,821)PPS LLR Amethyst: Earned 1,000,000 credits (1,252,848)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Ruby: Earned 2,000,000 credits (2,067,903)SR5 LLR Turquoise: Earned 5,000,000 credits (5,956,206)SGS LLR Amethyst: Earned 1,000,000 credits (1,680,461)TRP LLR Amethyst: Earned 1,000,000 credits (1,009,313)Woodall LLR Amethyst: Earned 1,000,000 credits (1,145,077)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,085,723)PPS Sieve Jade: Earned 10,000,000 credits (18,162,350)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 Turquoise: Earned 5,000,000 credits (5,877,196)GFN Sapphire: Earned 20,000,000 credits (38,036,953)PSA Turquoise: Earned 5,000,000 credits (9,426,791)
Message 109029 - Posted: 22 Jul 2017 | 9:25:01 UTC

The GPU is good, but you're getting errors on all the GCWs and some of the SGSs. You've already done the obvious troubleshooting steps.

Clearly there's *something* wrong with the hardware. If this is a new computer, and you bought the computer already assembled, I'd think about returning it. If you built the computer, it's time to start reseating components. It's possible there's a bad connection or a dirty contact somewhere. When you have the parts out, look carefully at the connectors. There may be a bent pin in there somewhere.

If reseating components doesn't work, it's time to start swapping components if you're comfortable with that. While you might not have a spare CPU and motherboard sitting in the parts bin, it's possible that the power supply is bad. Swap in another power supply if you have one that's suitable. Even though there's no indication it's at fault, swap out the GPU for another. If possible, remove memory sticks one by one and see if the problem goes away with a specific memory stick.


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Per
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Joined: 22 Apr 17
Posts: 10
ID: 855954
Credit: 34,640,573
RAC: 229,538
321 LLR Gold: Earned 500,000 credits (987,751)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,805,067)PPS LLR Gold: Earned 500,000 credits (585,995)SGS LLR Silver: Earned 100,000 credits (384,846)TRP LLR Silver: Earned 100,000 credits (115,680)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,417,219)TRP Sieve (suspended) Silver: Earned 100,000 credits (403,677)AP 26/27 Gold: Earned 500,000 credits (566,020)GFN Sapphire: Earned 20,000,000 credits (28,379,657)
Message 109038 - Posted: 22 Jul 2017 | 21:52:58 UTC - in response to Message 109029.

Thanks to all for advice - I don't have a spare MB or CPU but will start with reseating RAM, then on to "1 stick at a time" troubleshooting. I will run a longer memtest first though...

Thermal seems OK - cores at 50-60C, MB at 36C.

Per

Per
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Joined: 22 Apr 17
Posts: 10
ID: 855954
Credit: 34,640,573
RAC: 229,538
321 LLR Gold: Earned 500,000 credits (987,751)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,805,067)PPS LLR Gold: Earned 500,000 credits (585,995)SGS LLR Silver: Earned 100,000 credits (384,846)TRP LLR Silver: Earned 100,000 credits (115,680)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,417,219)TRP Sieve (suspended) Silver: Earned 100,000 credits (403,677)AP 26/27 Gold: Earned 500,000 credits (566,020)GFN Sapphire: Earned 20,000,000 credits (28,379,657)
Message 109047 - Posted: 23 Jul 2017 | 20:36:34 UTC - in response to Message 109038.

So, running for a day with CPU OC removed - now getting valid results

Go figure - I will let run for a couple of days and try testing some other things.

Thanks for the help.

Per

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Message boards : Generalized Cullen/Woodall prime search : GCW-LLR tasks are all inconclusive and/or invalid

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