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Old 2020-11-29, 16:50   #485
Ensigm
 
Aug 2020

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Default Benchmarking for P-1

I wonder if anyone else is also interested in the P-1 benchmarks I posted here. I believe this could mean we can potentially extract more P-1 power on some machine configurations (by using different FFT implementations for Stage 1 and Stage 2).

Last fiddled with by Ensigm on 2020-11-29 at 16:52
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Old 2020-12-21, 10:18   #486
BigDukeSix
 
Dec 2020

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Is there a way to set the ETA to dd:hh:mm until it arrives less than one day?
And another one: is ist bad that I got told undefined architecture on my latest gen AMD Ryzen 5600?

Thanks in advance.
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Old 2020-12-21, 11:45   #487
ZFR
 
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Quick question: can the constant writing of the 6GB proof file affect the lifespan of the ssd it is saved on? I have a second HDD connected, is it better to save the proof file on it instead?
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Old 2020-12-21, 11:55   #488
retina
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Quote:
Originally Posted by ZFR View Post
Quick question: can the constant writing of the 6GB proof file affect the lifespan of the ssd it is saved on?
Yes, all writes to any SSD reduce the lifespan.

The variable factors are how much lifespan you expect to get, how good the SSD controller is, and how much percentage each write reduces the life. Knowing nothing about your system or expectations, we can't answer those questions. Check the specs to see how it affects you.
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Old 2020-12-21, 13:15   #489
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OK, let me rephrase:

Roughly how many extra writes to disk are made (for the proof file only) on a full PRP test of an exponent in the 110,000,000 range. Proof power 8.
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Old 2020-12-21, 20:06   #490
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When I run GPUOwl, I copy the proof file over to my prime95 directory for easy upload.

Today, I had copied the file as usual, but stopped prime95 because I wanted to use the computer for other things. About an hour later prime95 uploaded the proof file, even though it was stopped.

This isn't a problem for me, but I wanted to make sure that this behavior was known and uploading while stopped is intentional.
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Old 2020-12-21, 22:27   #491
Viliam Furik
 
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Quote:
Originally Posted by ZFR View Post
OK, let me rephrase:

Roughly how many extra writes to disk are made (for the proof file only) on a full PRP test of an exponent in the 110,000,000 range. Proof power 8.
AFAIK, the residues used to produce the proof file are written once, into their folder, and then when the proof is generated, they are read, and the proof file is written once.

So about 6 GB of writes per test. SSDs have life expectancies in order of hundreds of TBW (Samsung uses ratio 1:600, that is drive capacity to the life capacity. For Pro versions they seem to use 1:1200, but that's on the 2,5" drives, M.2 seem to be all 1:600), which means you can safely write up to 25000 (realistically 20000-24000) proofs and residues to a "Samsung 970 EVO PLUS 250 GB", until it dies.

Unless you have a blazingly fast computer, that can do 20K+ tests within say 5 years, you don't have to worry about even scratching that amount. But if you really care about your drive, use HDD. They have a lot better capacity-to-price ratio, and the write size is limited by the drive's physical health. If you don't have an HDD, 1TB HDD comes at about $50.
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Old 2020-12-21, 23:25   #492
ZFR
 
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Quote:
Originally Posted by Viliam Furik View Post

So about 6 GB of writes per test.
Thanks. As you said, that's negligible.

I'm not really familiar with the maths behind the proof, so wasn't sure if it 6GB per test or per n iterations or every 30 mins, or....

Thanks for the reply.

Last fiddled with by ZFR on 2020-12-21 at 23:27
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Old 2020-12-25, 23:59   #493
ixfd64
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FYI: George has released a version 30.4 for 64-bit Windows that fixes several ECM-related bugs: https://mersenneforum.org/showpost.p...&postcount=281
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Old 2020-12-26, 02:35   #494
axn
 
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Quote:
Originally Posted by ixfd64 View Post
FYI: George has released a version 30.4 for 64-bit Windows that fixes several ECM-related bugs: https://mersenneforum.org/showpost.p...&postcount=281
Perhaps inappropriate for this thread, as the bugs were introduced and fixed in 30.4, and AFAICT, 30.4 is still "pre-release"
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Old 2021-01-04, 07:19   #495
LaurV
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I have a small issue with the 32-bit version of the 30.3b6, is that still supported?

I have an old machine which still runs winxp32 (albeit the cpu is a 64bit i5-3470, but I can not change the OS) and till now it was doing ECM using an older version of P95. As I wanted to switch to PRPCF and PRPCFDC, I downloaded and installed the new one over the old one. Now, I am getting "access denied" every time I try to start it, and then it crashes (the program, not the computer). It was/is in own folder (not "program files"), it had/has all the rights, and it doesn't seem that it tries to access anything (files, libraries, etc, as well as I can monitor). It just crashing with the "access denied" error without opening any window.

Libraries issues? Any other known issue? If yes, is it fixed in 30.4?

Last fiddled with by LaurV on 2021-01-04 at 07:25
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