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Message boards : Project Staging Area : PRP 27 Error Messages

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Allen Paschke
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Joined: 12 Nov 15
Posts: 26
ID: 428118
Credit: 38,622,595
RAC: 19,983
321 LLR Gold: Earned 500,000 credits (633,964)Cullen LLR Amethyst: Earned 1,000,000 credits (1,092,260)ESP LLR Gold: Earned 500,000 credits (725,144)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (911,847)PPS LLR Ruby: Earned 2,000,000 credits (2,851,452)PSP LLR Gold: Earned 500,000 credits (733,345)SoB LLR Amethyst: Earned 1,000,000 credits (1,366,737)SR5 LLR Amethyst: Earned 1,000,000 credits (1,028,629)SGS LLR Amethyst: Earned 1,000,000 credits (1,162,841)TRP LLR Gold: Earned 500,000 credits (580,212)Woodall LLR Gold: Earned 500,000 credits (750,004)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,077,504)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,003,035)PPS Sieve Amethyst: Earned 1,000,000 credits (1,031,526)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (978,990)TRP Sieve (suspended) Gold: Earned 500,000 credits (624,018)AP 26/27 Gold: Earned 500,000 credits (521,547)GFN Ruby: Earned 2,000,000 credits (2,014,494)WW Gold: Earned 500,000 credits (532,000)PSA Jade: Earned 10,000,000 credits (10,003,143)
Message 151257 - Posted: 23 Aug 2021 | 21:46:48 UTC

I've started receiving MULTIPLE error messages on some of my 27 Prime Search runs:

Iter: 2951050/8927468, ERROR: ROUND OFF (0.40625) > 0.4
Continuing from last save file.
Resuming Proth prime test of 27*2^8927464+1 at bit 2949505 [33.03%]
Using all-complex AVX FFT length 512K, Pass1=128, Pass2=4K, a = 5
Disregard last error. Result is reproducible and thus not a hardware problem.
For added safety, redoing iteration using a slower, more reliable method.
Continuing from last save file.

The tasks are running, but using alot of extra time to complete.

stream
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Joined: 1 Mar 14
Posts: 991
ID: 301928
Credit: 543,186,393
RAC: 7
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 1 prime in the 2021 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,011,570)Cullen LLR Jade: Earned 10,000,000 credits (10,009,374)ESP LLR Jade: Earned 10,000,000 credits (10,009,221)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (10,012,217)PPS LLR Jade: Earned 10,000,000 credits (16,320,747)PSP LLR Jade: Earned 10,000,000 credits (10,044,081)SoB LLR Jade: Earned 10,000,000 credits (10,064,750)SR5 LLR Jade: Earned 10,000,000 credits (10,002,051)SGS LLR Jade: Earned 10,000,000 credits (10,001,295)TRP LLR Jade: Earned 10,000,000 credits (10,002,411)Woodall LLR Jade: Earned 10,000,000 credits (10,013,921)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,004,228)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,047,667)PPS Sieve Sapphire: Earned 20,000,000 credits (20,866,490)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,043,271)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,015,177)AP 26/27 Sapphire: Earned 20,000,000 credits (20,045,194)GFN Emerald: Earned 50,000,000 credits (55,355,287)WW Emerald: Earned 50,000,000 credits (50,016,000)PSA Double Silver: Earned 200,000,000 credits (200,301,443)
Message 151264 - Posted: 24 Aug 2021 | 8:46:29 UTC - in response to Message 151257.

This is unavoidable. FFT size going to change soon, and some tasks may generate this warning.

If you're using a batch file wrapper (for example, to run mutilthreaded LLR), you can add an option to command line

-oDiskWriteTime=1

to force LLR to save checkpoint every minute. This will reduce time lost after such restart.

Allen Paschke
Send message
Joined: 12 Nov 15
Posts: 26
ID: 428118
Credit: 38,622,595
RAC: 19,983
321 LLR Gold: Earned 500,000 credits (633,964)Cullen LLR Amethyst: Earned 1,000,000 credits (1,092,260)ESP LLR Gold: Earned 500,000 credits (725,144)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (911,847)PPS LLR Ruby: Earned 2,000,000 credits (2,851,452)PSP LLR Gold: Earned 500,000 credits (733,345)SoB LLR Amethyst: Earned 1,000,000 credits (1,366,737)SR5 LLR Amethyst: Earned 1,000,000 credits (1,028,629)SGS LLR Amethyst: Earned 1,000,000 credits (1,162,841)TRP LLR Gold: Earned 500,000 credits (580,212)Woodall LLR Gold: Earned 500,000 credits (750,004)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,077,504)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,003,035)PPS Sieve Amethyst: Earned 1,000,000 credits (1,031,526)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (978,990)TRP Sieve (suspended) Gold: Earned 500,000 credits (624,018)AP 26/27 Gold: Earned 500,000 credits (521,547)GFN Ruby: Earned 2,000,000 credits (2,014,494)WW Gold: Earned 500,000 credits (532,000)PSA Jade: Earned 10,000,000 credits (10,003,143)
Message 151283 - Posted: 25 Aug 2021 | 13:27:48 UTC - in response to Message 151264.

I'm running "C:\PRP 27 - 4\prpclient-1\prpclient.exe", so I would change it to
"C:\PRP 27 - 4\prpclient-1\prpclient.exe -oDiskWriteTime=1"?

Is there a way to define the checkpoint frequency in the INI file?

Since this is happening more and more frequently with tasks on multiple PCs, another option may be to increase the roundoff error criteria from 0.4.

Allen Paschke
Send message
Joined: 12 Nov 15
Posts: 26
ID: 428118
Credit: 38,622,595
RAC: 19,983
321 LLR Gold: Earned 500,000 credits (633,964)Cullen LLR Amethyst: Earned 1,000,000 credits (1,092,260)ESP LLR Gold: Earned 500,000 credits (725,144)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (911,847)PPS LLR Ruby: Earned 2,000,000 credits (2,851,452)PSP LLR Gold: Earned 500,000 credits (733,345)SoB LLR Amethyst: Earned 1,000,000 credits (1,366,737)SR5 LLR Amethyst: Earned 1,000,000 credits (1,028,629)SGS LLR Amethyst: Earned 1,000,000 credits (1,162,841)TRP LLR Gold: Earned 500,000 credits (580,212)Woodall LLR Gold: Earned 500,000 credits (750,004)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,077,504)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,003,035)PPS Sieve Amethyst: Earned 1,000,000 credits (1,031,526)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (978,990)TRP Sieve (suspended) Gold: Earned 500,000 credits (624,018)AP 26/27 Gold: Earned 500,000 credits (521,547)GFN Ruby: Earned 2,000,000 credits (2,014,494)WW Gold: Earned 500,000 credits (532,000)PSA Jade: Earned 10,000,000 credits (10,003,143)
Message 151284 - Posted: 25 Aug 2021 | 18:47:13 UTC - in response to Message 151283.

FYI --- Round off errors are occurring on a majority of my Proth Prime (xxxxxxx+1) tasks, but NEVER on a Lucas Lehmer Riesel (xxxxxxx-1) task

stream
Volunteer moderator
Project administrator
Volunteer developer
Volunteer tester
Send message
Joined: 1 Mar 14
Posts: 991
ID: 301928
Credit: 543,186,393
RAC: 7
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 1 prime in the 2021 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,011,570)Cullen LLR Jade: Earned 10,000,000 credits (10,009,374)ESP LLR Jade: Earned 10,000,000 credits (10,009,221)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (10,012,217)PPS LLR Jade: Earned 10,000,000 credits (16,320,747)PSP LLR Jade: Earned 10,000,000 credits (10,044,081)SoB LLR Jade: Earned 10,000,000 credits (10,064,750)SR5 LLR Jade: Earned 10,000,000 credits (10,002,051)SGS LLR Jade: Earned 10,000,000 credits (10,001,295)TRP LLR Jade: Earned 10,000,000 credits (10,002,411)Woodall LLR Jade: Earned 10,000,000 credits (10,013,921)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,004,228)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,047,667)PPS Sieve Sapphire: Earned 20,000,000 credits (20,866,490)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,043,271)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,015,177)AP 26/27 Sapphire: Earned 20,000,000 credits (20,045,194)GFN Emerald: Earned 50,000,000 credits (55,355,287)WW Emerald: Earned 50,000,000 credits (50,016,000)PSA Double Silver: Earned 200,000,000 credits (200,301,443)
Message 151285 - Posted: 25 Aug 2021 | 20:35:49 UTC - in response to Message 151283.

I'm running "C:\PRP 27 - 4\prpclient-1\prpclient.exe", so I would change it to
"C:\PRP 27 - 4\prpclient-1\prpclient.exe -oDiskWriteTime=1"?

Is there a way to define the checkpoint frequency in the INI file?


I don't remember exact details now, but there was a topic "how to use multithreaded LLR in PrpNet" or similar. The idea is that you should edit your prpclient.ini file and change something like "llrexe=llr.exe" line to "llrexe=my_llr_wrapper.cmd" and create this "my_llr_wrapper.cmd" batch file which should call LLR with any extra options you want to use, like multithreading.

Since this is happening more and more frequently with tasks on multiple PCs, another option may be to increase the roundoff error criteria from 0.4.

Or just be patient for few days. It happens more and more frequently because we are getting closer and closer to the edge. Soon LLR will finally decide to increase FFT size and this problem will go away for many months (until next boundary is reached).

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Message boards : Project Staging Area : PRP 27 Error Messages

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