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Message boards : Problems and Help : (CPU) GFN 16 SSE2 transform is past its b limit?

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Posts: 115
ID: 3556
Credit: 16,613,842
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321 LLR Silver: Earned 100,000 credits (186,168)Cullen LLR Silver: Earned 100,000 credits (161,492)ESP LLR Silver: Earned 100,000 credits (102,526)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (115,730)PPS LLR Amethyst: Earned 1,000,000 credits (1,388,327)PSP LLR Silver: Earned 100,000 credits (132,546)SoB LLR Silver: Earned 100,000 credits (433,700)SR5 LLR Silver: Earned 100,000 credits (114,016)SGS LLR Silver: Earned 100,000 credits (162,863)TRP LLR Silver: Earned 100,000 credits (100,020)Woodall LLR Silver: Earned 100,000 credits (103,446)321 Sieve (suspended) Ruby: Earned 2,000,000 credits (2,006,012)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,740,001)PPS Sieve Turquoise: Earned 5,000,000 credits (5,066,749)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (119,708)TRP Sieve (suspended) Gold: Earned 500,000 credits (527,925)AP 26/27 Gold: Earned 500,000 credits (824,854)WW Gold: Earned 500,000 credits (804,000)GFN Amethyst: Earned 1,000,000 credits (1,509,367)
Message 137064 - Posted: 1 Feb 2020 | 17:00:29 UTC

Had 4 task on 2 different PC's fail with the same error message as noted in bold below but also have successfully completed tasks prior and since then.
PC's have never had any problems are not overheating or overclocked.

Example task 1058768903

SSE2 transform is past its b limit.
Using x87 (80-bit) transform
Resuming 73813422^65536+1 from a checkpoint (1140439 iterations left)
Estimated time remaining for 73813422^65536+1 is 1:16:00

maxErr exceeded for 73813422^65536+1, 0.4688 > 0.4500
Errors occurred for all available transform implementations
Waiting 10 minutes before attempting to continue from last checkpoint...


The 4 failed tasks:
1058768903 640292445 525024 1 Feb 2020 | 11:00:20 UTC 1 Feb 2020 | 12:43:57 UTC Error while computing 2,343.88 2,237.98 --- Genefer 16 v3.21 (cpuGFN16) 1058729157 640272865 535172 1 Feb 2020 | 9:29:39 UTC 1 Feb 2020 | 13:35:26 UTC Error while computing 4,146.81 4,106.34 --- Genefer 16 v3.21 (cpuGFN16) 1058728250 640272421 535172 1 Feb 2020 | 9:26:54 UTC 1 Feb 2020 | 11:09:51 UTC Error while computing 2,163.37 2,143.39 --- Genefer 16 v3.21 (cpuGFN16) 1058705308 640261036 525024 1 Feb 2020 | 8:35:03 UTC 1 Feb 2020 | 10:22:24 UTC Error while computing 2,404.28 2,346.65 --- Genefer 16 v3.21 (cpuGFN16)

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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 PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (3,156,820)Cullen LLR Ruby: Earned 2,000,000 credits (3,624,591)ESP LLR Turquoise: Earned 5,000,000 credits (5,021,269)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,963,361)321 Sieve (suspended) 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)WW Sapphire: Earned 20,000,000 credits (22,736,000)GFN Emerald: Earned 50,000,000 credits (77,916,132)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 137072 - Posted: 1 Feb 2020 | 18:57:36 UTC - in response to Message 137064.
Last modified: 1 Feb 2020 | 19:00:31 UTC

Maybe. I'm looking into it. I'll know more in a couple of hours.

EDIT: This has nothing to do with the SSE2 limit. That limit was passed ages ago. The issue here is whether we've passed the x87 limit. Theoretically, we have about 8 million to go until we reach the limit, but it's expected that some specific tasks will fail earlier. We may have reached that point. If we have, it's time to turn off the GFN-16 CPU app.
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My lucky number is 75898524288+1

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13620
ID: 53948
Credit: 266,216,437
RAC: 301,246
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 PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (3,156,820)Cullen LLR Ruby: Earned 2,000,000 credits (3,624,591)ESP LLR Turquoise: Earned 5,000,000 credits (5,021,269)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,963,361)321 Sieve (suspended) 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)WW Sapphire: Earned 20,000,000 credits (22,736,000)GFN Emerald: Earned 50,000,000 credits (77,916,132)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 137076 - Posted: 1 Feb 2020 | 21:27:47 UTC

I ran a few tests, and the Windows version of Genefer is failing with the x87 transform on that particular number. The Linux binary does it correctly, but it's certainly going to start failing on other numbers soon, if it hasn't already.

This is not unexpected, but the exact timing of when this would happen is difficult to predict.

It's time to make GFN-16 GPU-only. You should select something else to run on that CPU.

Within the next few minutes I'll be shutting off GFN-16 CPU tasks.

GPU tasks are not affected.
____________
My lucky number is 75898524288+1

Message boards : Problems and Help : (CPU) GFN 16 SSE2 transform is past its b limit?

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