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Forum: Wagstaff PRP Search 2020-05-27, 08:14
Replies: 369
Views: 28,612
Posted By paulunderwood
grep has results.txt | cut -d' ' -f7,3 | sort |...

grep has results.txt | cut -d' ' -f7,3 | sort | uniq | sed -e's/ / \| /'


Should do it
Forum: Wagstaff PRP Search 2020-05-27, 05:24
Replies: 369
Views: 28,612
Posted By paulunderwood
Fair enough. It is just a polymorphed symbol.

Fair enough. It is just a polymorphed symbol.
Forum: Wagstaff PRP Search 2020-05-26, 22:46
Replies: 369
Views: 28,612
Posted By paulunderwood
If anything A | B is preferable and shorter.

If anything A | B is preferable and shorter.
Forum: Homework Help 2020-05-25, 10:49
Replies: 36
Views: 90,049
Posted By paulunderwood
Do you mean \(\exists\) and \(\Sigma\) and...

Do you mean \(\exists\) and \(\Sigma\) and \(\in\)?
Forum: Miscellaneous Math 2020-05-23, 18:38
Replies: 19
Views: 827
Posted By paulunderwood
Is it 3 mod 4? How many tons of coal are...

Is it 3 mod 4?

How many tons of coal are needed to LL test it?

What do you calculate the "chance" of being prime is?

Let me give you an example prime p=2^82589933-1 definitely has no small...
Forum: Miscellaneous Math 2020-05-23, 14:15
Replies: 19
Views: 827
Posted By paulunderwood
The "8" --> "10" in the exponent would be beyond...

The "8" --> "10" in the exponent would be beyond expectation. It would take a day on a GPU you to dismiss this claim, assuming P-1 does not turn up a factor.
Forum: Programming 2020-05-22, 21:09
Replies: 5
Views: 333
Posted By paulunderwood
We need to put it to the test with a...

We need to put it to the test with a (b^n-1)/(b-1) number of considerable size not necessarily prime.

./llr64 -q"(10^49081-1)/9" -t4
Invalid expression in command line.


./pfgw64...
Forum: GPU Computing 2020-05-18, 22:40
Replies: 268
Views: 13,091
Posted By paulunderwood
Congrats on getting you 3-GPU rig running. With...

Congrats on getting you 3-GPU rig running. With the one on your Haswell that is equivalent to ~40x 4 core CPUs but far more efficient in power usage and overall size. Now you should soon be propelled...
Forum: Linux 2020-05-15, 03:40
Replies: 7
Views: 451
Posted By paulunderwood
I had a "crazy" network recently. It turned out...

I had a "crazy" network recently. It turned out to be a half-in LAN cable on one of the machines on my network.
Forum: GPU Computing 2020-05-15, 00:29
Replies: 268
Views: 13,091
Posted By paulunderwood
Does id say you are in the video group? If not do...

Does id say you are in the video group? If not do sudo usermod -aG video emayer (if that is your username) and logout and back in and run id again to see.
Forum: GPU Computing 2020-05-14, 20:53
Replies: 268
Views: 13,091
Posted By paulunderwood
:davar55: I run gpuowl as root on Buster;...

:davar55: I run gpuowl as root on Buster; Everything else as a user, apart from admin stuff :wink:
Forum: GPU Computing 2020-05-14, 20:02
Replies: 268
Views: 13,091
Posted By paulunderwood
It's ugly, but see here...

It's ugly, but see here (https://mersenneforum.org/showthread.php?t=25065&highlight=sudo&page=2) on how to run without sudo.
Forum: GPU Computing 2020-05-14, 19:42
Replies: 268
Views: 13,091
Posted By paulunderwood
Don't you need to prefix with a sudo command?

Don't you need to prefix with a sudo command?
Forum: GPU Computing 2020-05-14, 19:26
Replies: 268
Views: 13,091
Posted By paulunderwood
What does uname -a give? Are you using rocm v3.3?...

What does uname -a give? Are you using rocm v3.3? What command are you issuing to try and run gpuowl?
Forum: GPU Computing 2020-05-13, 22:00
Replies: 268
Views: 13,091
Posted By paulunderwood
2. I am glad you got the rig working with one...

2. I am glad you got the rig working with one card. Measure the wall wattage carefully at --setsclk 3. When you install all three GPUs you want to stay in safe limits, otherwise things will fry! Have...
Forum: Miscellaneous Math 2020-05-13, 18:03
Replies: 16
Views: 346
Posted By paulunderwood
If you taking about how long it takes to wrtie...

If you taking about how long it takes to wrtie the number to file: The following takes ~1 ms with Pari/GP (https://pari.math.u-bordeaux.fr/download.html):
...
Forum: Programming 2020-05-13, 17:51
Replies: 5
Views: 333
Posted By paulunderwood
You need to generate a list to input to LLR. ...

You need to generate a list to input to LLR.

Why bother? PFGW is much better at this sort of thing.

More from the documentation:
Forum: Programming 2020-05-13, 17:38
Replies: 5
Views: 333
Posted By paulunderwood
Run it through PFGW downloaded from sourceforge...

Run it through PFGW downloaded from sourceforge and use the -f switch for trial factoring if necessary.

From pfgwdoc.txt:
Forum: Prime Wiki 2020-05-13, 16:49
Replies: 162
Sticky: Prime-Wiki
Views: 10,980
Posted By paulunderwood
This is a list of the top20s...

This is a list of the top20s (https://primes.utm.edu/top20/index.php).

This gives the thresholds (https://primes.utm.edu/top20/sizes.php).
Forum: Miscellaneous Math 2020-05-13, 14:29
Replies: 16
Views: 346
Posted By paulunderwood
Just to expand on your "in almost very case"....

Just to expand on your "in almost very case". PRP'ing a huge partitions number is quicker than computing its decimal digits (with the latest Pari/GP version). Proving it prime or even checking the...
Forum: GPU Computing 2020-05-13, 03:34
Replies: 268
Views: 13,091
Posted By paulunderwood
On my Debian system which is similar to Ubuntu: ...

On my Debian system which is similar to Ubuntu:

apt-cache search libOpenCL
ocl-icd-libopencl1 - Generic OpenCL ICD Loader
nvidia-libopencl1 - NVIDIA OpenCL ICD Loader library...
Forum: GPU Computing 2020-05-13, 03:22
Replies: 268
Views: 13,091
Posted By paulunderwood
@ernst, I am glad your found the source of the...

@ernst, I am glad your found the source of the hardware problem albeit frustrating, especially when you could have double checked the vga-hdmi gadget before you bought the Celeron system. We have all...
Forum: Miscellaneous Math 2020-05-12, 05:35
Replies: 79
Views: 4,962
Posted By paulunderwood
Another idea

{forprime(p=3,30000000000,if(
Mod(Mod(1,p+17)*x+2,x^2-3)^lift(Mod(2,p+1)^p)==1&&
Mod(Mod(1,p+257)*x+2,x^2-3)^lift(Mod(2,p+1)^p)==1&&
Mod(Mod(1,p+65537)*x+2,x^2-3)^lift(Mod(2,p+1)^p)==1,...
Forum: Software 2020-05-12, 05:09
Replies: 4
Views: 181
Posted By paulunderwood
A 3990x will necessary to certify R49081...

A 3990x will necessary to certify R49081 (http://www.elektrosoft.it/matematica/repunit/R49081-4.pdf) in a timely manner when Marcel upgrades Primo.

As for my Opteron System: It stopped working and...
Forum: Software 2020-05-11, 09:07
Replies: 4
Views: 181
Posted By paulunderwood
ECPP is O(ln(n)^(4+eps)) meaning a doubling in...

ECPP is O(ln(n)^(4+eps)) meaning a doubling in length takes 16 times as long. This can be helped by having a many-core system.

It took me 21.5 months to certify a 40000 digit number on a 48 core...
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