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Old 2018-10-13, 02:29   #1
irowiki
 
Sep 2018

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Question SUMOUT Error Occurred.

Quote:
[Main thread Oct 12 20:03] Mersenne number primality test program version 29.4
[Main thread Oct 12 20:04] Optimizing for CPU architecture: AMD Bulldozer, L2 cache size: 1 MB
[Main thread Oct 12 20:04] Starting worker.

[Oct 12 20:04] Worker starting
[Oct 12 20:04] Setting affinity to run worker on CPU core #1
[Oct 12 20:04] Optimal P-1 factoring of M89164483 using up to 3075MB of memory.
[Oct 12 20:04] Assuming no factors below 2^76 and 2 primality tests saved if a factor is found.
[Oct 12 20:04] Optimal bounds are B1=725000, B2=13775000
[Oct 12 20:04] Chance of finding a factor is an estimated 3.11%
[Oct 12 20:04] Setting affinity to run helper thread 1 on CPU core #2
[Oct 12 20:04] Setting affinity to run helper thread 2 on CPU core #3
[Oct 12 20:04] Using type-2 FFT length 4800K, Pass1=640, Pass2=7680, clm=4, 4 threads
[Oct 12 20:04] Setting affinity to run helper thread 3 on CPU core #4
[Oct 12 20:04] M89164483 stage 1 complete. 0 transforms. Time: 0.111 sec.
[Oct 12 20:04] Starting stage 1 GCD - please be patient.
[Oct 12 20:06] Stage 1 GCD complete. Time: 105.171 sec.
[Oct 12 20:06] Using 3063MB of memory. Processing 75 relative primes (0 of 480 already processed).
[Oct 12 20:06] SUMOUT error occurred.
[Oct 12 20:06] Waiting five minutes before restarting.

[Oct 12 20:11] Setting affinity to run helper thread 1 on CPU core #2
[Oct 12 20:11] Setting affinity to run helper thread 2 on CPU core #3
[Oct 12 20:11] Using type-2 FFT length 4800K, Pass1=640, Pass2=7680, clm=4, 4 threads
[Oct 12 20:11] Setting affinity to run helper thread 3 on CPU core #4
[Oct 12 20:11] M89164483 stage 1 complete. 5 transforms. Time: 2.603 sec.
[Oct 12 20:11] Starting stage 1 GCD - please be patient.
[Oct 12 20:13] Stage 1 GCD complete. Time: 94.169 sec.
[Oct 12 20:13] Using 3063MB of memory. Processing 75 relative primes (0 of 480 already processed).
[Oct 12 20:13] SUMOUT error occurred.
[Oct 12 20:13] Waiting five minutes before restarting.
CPU:
click for cpu
Worker windows:
click for workers


Brand new-ish gaming laptop, thought I'd throw prime on it more of a hardware test than anything else, out of all 50~ of my machines this is the first time running into this.

This is also my first time doing P-1, everything else has been LL and LL DC.

Cooling isn't an issue, under full load it never passes 70C / 160F.

I had given Prime 10 gigs of ram, thought that was the issue so reduced it to 3, and it didn't help.

I am running a Torture test overnight to see what happens, but thought I would post first.
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Old 2018-10-13, 13:53   #2
kriesel
 
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Quote:
Originally Posted by irowiki View Post
CPU:
click for cpu
Worker windows:
click for workers


Brand new-ish gaming laptop, thought I'd throw prime on it more of a hardware test than anything else, out of all 50~ of my machines this is the first time running into this.

This is also my first time doing P-1, everything else has been LL and LL DC.

Cooling isn't an issue, under full load it never passes 70C / 160F.

I had given Prime 10 gigs of ram, thought that was the issue so reduced it to 3, and it didn't help.

I am running a Torture test overnight to see what happens, but thought I would post first.
You could also consider a PRP with Gerbicz check or a PRP DC with Gerbicz check.
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Old 2018-10-14, 03:27   #3
irowiki
 
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Quote:
Originally Posted by kriesel View Post
You could also consider a PRP with Gerbicz check or a PRP DC with Gerbicz check.

Ah, so set my work preference to that, unreserve what I have and see how it does with the Gerbicz?

I've had memtest, dell diagnostics, and a Torture test running since yesterday, and it has passed all of that.

Thank you!
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Old 2018-10-15, 06:59   #4
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Do I need to wait the Whole 30 days or does the PRP DC have the equivalent of a Jacobi error check?
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Old 2018-10-15, 07:19   #5
kriesel
 
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Quote:
Originally Posted by irowiki View Post
Do I need to wait the Whole 30 days or does the PRP DC have the equivalent of a Jacobi error check?
Jacobi check has a 50% chance of detecting an error if one occurs.

Gerbicz check error detection is almost 100%. So, not equivalent, but in a good way; probability of lack of error detection is far better!
Error detections would show up in the results file.
Following is an example of what that might look like, from a slow system I had running for a while that became unreliable during a lengthy run.

Code:
[Sun Jul 15 12:25:15 2018]
ERROR: Comparing Gerbicz checksum values failed.  Rolling back to iteration 5249876.
Continuing from last save file.
Trying backup intermediate file: p23R1809.bu
It's a check periodically along the way.

Last fiddled with by kriesel on 2018-10-15 at 07:22
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Old 2018-10-16, 02:25   #6
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Quote:
[Oct 15 20:21] Iteration: 5460000 / 77948267 [7.00%], ms/iter: 28.953, ETA: 24d 06:58

No errors, it's chugging along. Thank you for your help!
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Old 2018-10-22, 06:06   #7
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I'm back! Doing a PRP DC now. Got all the way to 27.22% without any errors (no rebooting) and got a round off error:


Quote:
[Oct 21 02:04] Iteration: 21219042/77948267, Possible error: round off (0.4375) > 0.42188
[Oct 21 02:04] Iteration: 21220000 / 77948267 [27.22%], ms/iter: 28.167, ETA: 18d 11:51
[Oct 21 02:04] Possible hardware errors have occurred during the test! 1 ROUNDOFF > 0.4.
[Oct 21 02:04] Confidence in final result is excellent.
This laptop ran memtest for a few days straight, and then the prime95 stresstest for a few days straight.


Do y'all think this is more memory or processor related?
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Old 2018-10-22, 09:00   #8
henryzz
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Is this near a FFT boundary? If so this happens occasionally. What is the average error?

Last fiddled with by henryzz on 2018-10-22 at 09:00
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Old 2018-10-22, 18:10   #9
irowiki
 
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Quote:
Originally Posted by henryzz View Post
Is this near a FFT boundary? If so this happens occasionally. What is the average error?
That error I posted was the only one. So I shouldn't worry quite yet?
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Old 2018-10-23, 13:57   #10
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Quote:
Originally Posted by irowiki View Post
That error I posted was the only one. So I shouldn't worry quite yet?
Only if it is near an FFT boundary. I am not sure how best to determine that.
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Old 2018-10-24, 02:40   #11
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Quote:
Originally Posted by henryzz View Post
Only if it is near an FFT boundary. I am not sure how best to determine that.
If it is doing a PRP test with Gerbicz Error Check, I wouldn't worry about it. Also note the "Confidence in final result is excellent."
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