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Search took 0.32 seconds. Search: Posts Made By: frmky
Forum: NFS@Home 2022-05-20, 03:14
Replies: 55
Views: 3,204
Posted By frmky
Can you give it a try on your gpu with ...

Can you give it a try on your gpu with
./msieve -nc2 "skip_matbuild=1 use_managed=1" -g 0 -v

I'm curious if it will run, and if so how long it will take.
Forum: XYYXF Project 2022-05-19, 20:18
Replies: 39
Views: 14,305
Posted By frmky
(3602,2577) and (3646,2389) are done and...

(3602,2577) and (3646,2389) are done and uploaded. (3543,3052) is running now.
Forum: NFS@Home 2022-05-19, 17:17
Replies: 1,922
Views: 179,122
Posted By frmky
The queue for 16e is long. In terms of calendar...

The queue for 16e is long. In terms of calendar time, it would be completed more quickly in 16e_small.
Forum: And now for something completely different 2022-05-18, 23:42
Replies: 103
Views: 4,399
Posted By frmky
Looks like mpich. Did you install it through the...

Looks like mpich. Did you install it through the package manager? If you did install it that way and don't have anything else relying on it, I recommend

sudo apt remove mpich
sudo apt install...
Forum: And now for something completely different 2022-05-18, 21:40
Replies: 103
Views: 4,399
Posted By frmky
That’s progress! What MPI are you using? What...

That’s progress! What MPI are you using? What Linux?
Forum: And now for something completely different 2022-05-18, 16:50
Replies: 103
Views: 4,399
Posted By frmky
mpirun -np 4 ecpp-mpi -g -n '10^1000+453' -c -f...

mpirun -np 4 ecpp-mpi -g -n '10^1000+453' -c -f cert-1000
Replace 4 by the number of physical cores you have.
Forum: And now for something completely different 2022-05-17, 22:09
Replies: 103
Views: 4,399
Posted By frmky
Negligible. It's a server/client framework with...

Negligible. It's a server/client framework with comparatively long workunit times implemented using MPI.
Forum: XYYXF Project 2022-05-17, 05:32
Replies: 39
Views: 14,305
Posted By frmky
I'll take (4444,535), (3924,1325), and...

I'll take (4444,535), (3924,1325), and (3507,3172).
Forum: And now for something completely different 2022-05-16, 20:32
Replies: 103
Views: 4,399
Posted By frmky
I think the error message is appropriate. This...

I think the error message is appropriate. This program is intended to be used to prove already known probable primes, not test numbers of unknown status. Any input that doesn't pass a PRP test is...
Forum: NFS@Home 2022-05-14, 05:25
Replies: 47
Views: 3,207
Posted By frmky
It's now done. 4FjKuTTS

It's now done.
4FjKuTTS
Forum: And now for something completely different 2022-05-13, 16:34
Replies: 103
Views: 4,399
Posted By frmky
Placing this in $HOME/.gprc also fixes it. \\...

Placing this in $HOME/.gprc also fixes it.
\\ Limit PARI stack size to 1000 Mbytes = 10*10^8 bytes
parisizemax = 1000M

\\ Set PARI typical stack size to 40 Mbytes = 4*10^7 bytes (will grow as...
Forum: And now for something completely different 2022-05-12, 22:32
Replies: 103
Views: 4,399
Posted By frmky
You can also do something like FILES="primo*" ...

You can also do something like
FILES="primo*"
for f in $FILES
do
NUM=$(grep 'N$=' $f | sed '/^N$=/!d;s///;q')
mpirun -np 32 ecpp-mpi -v -n "0x$NUM" -f cert-$f
done
On a related note, I've...
Forum: And now for something completely different 2022-05-12, 04:15
Replies: 103
Views: 4,399
Posted By frmky
ecpp only outputs Pari/gp format. Pari/gp...

ecpp only outputs Pari/gp format. Pari/gp supports converting that to Primo format.
Forum: And now for something completely different 2022-05-12, 03:18
Replies: 103
Views: 4,399
Posted By frmky
It is built on GMP and MPFR, which are well...

It is built on GMP and MPFR, which are well optimized for common architectures.
Forum: XYYXF Project 2022-05-11, 23:38
Replies: 39
Views: 14,305
Posted By frmky
I'll take (7035,34) next.

I'll take (7035,34) next.
Forum: And now for something completely different 2022-05-11, 19:16
Replies: 103
Views: 4,399
Posted By frmky
Here's a small change that will allow idle MPI...

Here's a small change that will allow idle MPI workers to yield their core. I've sent this to Andreas in case he wants to use it. With this change I can use one worker per hyperthread without slowing...
Forum: XYYXF Project 2022-05-11, 07:38
Replies: 39
Views: 14,305
Posted By frmky
Done. Now running 3201_1772, 3225_1678, and...

Done. Now running 3201_1772, 3225_1678, and 3392_1209.
Forum: XYYXF Project 2022-05-11, 02:42
Replies: 39
Views: 14,305
Posted By frmky
Done in 5.7 hours. Phase 2 took the time for the...

Done in 5.7 hours. Phase 2 took the time for the largest step, 1.4 hours. Now working on 3155_1966.
Forum: XYYXF Project 2022-05-10, 20:13
Replies: 39
Views: 14,305
Posted By frmky
Sorry, I didn't notice this thread! I'll do...

Sorry, I didn't notice this thread! I'll do (3594,697).
Forum: XYYXF Project 2022-05-10, 20:08
Replies: 505
Views: 121,186
Posted By frmky
Oops, I missed that. I'll do (3594,697) then.

Oops, I missed that. I'll do (3594,697) then.
Forum: XYYXF Project 2022-05-10, 18:32
Replies: 505
Views: 121,186
Posted By frmky
I'll give (3042,2231) a go. I think it should...

I'll give (3042,2231) a go. I think it should take only a few hours on six 20-core nodes.
Forum: And now for something completely different 2022-05-10, 18:16
Replies: 103
Views: 4,399
Posted By frmky
Running one process per core reduced the time for...

Running one process per core reduced the time for the second phase to 3.7 hours (the time of the longest step), and the total time to 27 hours.
Forum: Msieve 2022-05-10, 18:13
Replies: 103
Views: 12,128
Posted By frmky
That's a BIOS issue. Google says to look for...

That's a BIOS issue. Google says to look for options deep in the BIOS menus like PCI Express 64-bit BAR Support, large BARs, or above 4G decoding.
Forum: And now for something completely different 2022-05-10, 16:52
Replies: 103
Views: 4,399
Posted By frmky
Yes No No That's right. In a homogenous...

Yes
No
No
That's right. In a homogenous cluster one typically uses a shared file system to host the binaries and input files, but identical directories on separate file systems will work.
Yes,...
Forum: And now for something completely different 2022-05-10, 14:10
Replies: 103
Views: 4,399
Posted By frmky
Certification of a 15k digit prime, 2^49831-3637,...

Certification of a 15k digit prime, 2^49831-3637, took 29.7 hours using 12x Xeon E5-2670 v2 cpus with a total of 120 cores and 240 hyperthreads. The longest step of the second phase took 6.3 hours to...
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