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Forum: And now for something completely different 2022-05-13, 18:29
Replies: 74
Views: 2,789
Posted By paulunderwood
(FactorDB)

(FactorDB)
Forum: And now for something completely different 2022-05-13, 12:55
Replies: 74
Views: 2,789
Posted By paulunderwood
One might have to type...

One might have to type 'print(fibonacci(37217)/4466041)' to avoid trucation by Pari/GP. I certainly get truncation with echo fibonacci(37217)/4466041 | gp -q but maybe it works with the -n switch on...
Forum: And now for something completely different 2022-05-11, 19:43
Replies: 74
Views: 2,789
Posted By paulunderwood
I noticed that some numbers stall the program,...

I noticed that some numbers stall the program, like (10^79-1)/9. Primo does a BPSW sanity test before ECPP.

@Serge: The 50001 digit ECPP proof is still not in the UTM database. You had better ask...
Forum: Programming 2022-05-11, 00:37
Replies: 12
Views: 381
Posted By paulunderwood
Here is a perl script. usage: perl myscript.pl...

Here is a perl script. usage: perl myscript.pl input_file worker_count > output_file

open(fh,"<",$ARGV[0]);
$count=0;
while(<fh>){$count++;}
close(fh);

open(fh,"<",$ARGV[0]);...
Forum: And now for something completely different 2022-05-10, 15:57
Replies: 74
Views: 2,789
Posted By paulunderwood
questions about mpirun ecpp-mpi

Regarding mpi, can ecpp-mpi be run on non-uniform processors on a network. Can clients drop out without affecting the server? Likewise, can clients be added at runtime?

As far as I can tell, the...
Forum: And now for something completely different 2022-05-10, 12:42
Replies: 4
Views: 84
Posted By paulunderwood
One thing you could do is to use the meta...

One thing you could do is to use the meta keywords in your page.
Forum: Programming 2022-05-10, 11:17
Replies: 12
Views: 381
Posted By paulunderwood
Windows or Linux? What is your preferred...

Windows or Linux? What is your preferred (scripting) language?
Forum: And now for something completely different 2022-05-09, 18:20
Replies: 74
Views: 2,789
Posted By paulunderwood
Perhaps EdH can give us a synopsis on how to run...

Perhaps EdH can give us a synopsis on how to run client boxes.
Forum: And now for something completely different 2022-05-09, 16:48
Replies: 74
Views: 2,789
Posted By paulunderwood
Can you run?: adduser stargate38 su...

Can you run?:

adduser stargate38
su stargate38
Forum: And now for something completely different 2022-05-09, 00:27
Replies: 74
Views: 2,789
Posted By paulunderwood
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib ...

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
export LD_LIBRARY_PATH


HTH.

Note ecpp, as opposed to ecpp-mpi, is single threaded. Your next step will be to get mpi running.
Forum: And now for something completely different 2022-05-08, 22:33
Replies: 74
Views: 2,789
Posted By paulunderwood
Even I managed to get mpirun ecpp-mpi -g -n...

Even I managed to get mpirun ecpp-mpi -g -n '(10^1031-1)/9' -c -f cert-1031 working, after downloading, compiling and installing mpfrcx-0.6.3; and configuring ecpp-mpi with the right flag to...
Forum: And now for something completely different 2022-05-08, 15:13
Replies: 74
Views: 2,789
Posted By paulunderwood
What is stopping Marcel Martin studying the...

What is stopping Marcel Martin studying the source of FastECPP to improve Primo?
Forum: And now for something completely different 2022-05-08, 03:52
Replies: 74
Views: 2,789
Posted By paulunderwood
I am sticking wih Primo for now. A) I have...

I am sticking wih Primo for now. A) I have started a couple numbers on my 3990x and B) running two numbers seems to keep all cores busy.
Forum: Flea Market 2022-05-07, 22:13
Replies: 5
Views: 5,174
Posted By paulunderwood
Viliam Furík has a Radeon VII on sale for $750...

Viliam Furík has a Radeon VII on sale for $750 USD including delivery woldwide (https://mersenneforum.org/showpost.php?p=605445&postcount=374).
Forum: And now for something completely different 2022-05-07, 15:15
Replies: 74
Views: 2,789
Posted By paulunderwood
Some entity should set up fastECPP for a...

Some entity should set up fastECPP for a proof-over-the-net. Clients could latch onto the main server. This way a 60k proof might be computed in a reasonable amount of time.
Forum: sweety439 2022-05-07, 11:12
Replies: 4
Views: 121
Posted By paulunderwood
Like me, Marcel Martin, the author of Primo,...

Like me, Marcel Martin, the author of Primo, loathes Windows. He has good reason to do so as well. You are under a delusion that someone should "update the Windows version". Get real. Install Linux....
Forum: And now for something completely different 2022-05-06, 23:33
Replies: 74
Views: 2,789
Posted By paulunderwood
Please email Andraes and ask him to make an UTM...

Please email Andraes and ask him to make an UTM submission.
Forum: And now for something completely different 2022-05-06, 23:31
Replies: 74
Views: 2,789
Posted By paulunderwood
It is 50,001 digits. My estimate for Primo is...

It is 50,001 digits. My estimate for Primo is (50001/49081)^4 = 1.077 or 7.7% longer.

I used quad channel DDR 2400MHz for R49081's certification. I guess they were using octa channel most of the...
Forum: And now for something completely different 2022-05-06, 22:05
Replies: 74
Views: 2,789
Posted By paulunderwood
An amazing feat! Such parallelism and clever...

An amazing feat! Such parallelism and clever mathematics run on some very big hardware. I take my hat off to these provers. :smile:
Forum: Miscellaneous Math 2022-05-06, 05:30
Replies: 29
Views: 955
Posted By paulunderwood
2^470000001 in binary is 1 followed by...

2^470000001 in binary is 1 followed by 470,000,001 zeroes. Using 64 bits per limb -- 7,343,751 limbs. How long does it take to allocate and zero (non static) memory of this many words when the speed...
Forum: And now for something completely different 2022-05-03, 19:59
Replies: 57
Views: 30,780
Posted By paulunderwood
Congrats :toot:

Congrats :toot:
Forum: Miscellaneous Math 2022-05-02, 10:50
Replies: 29
Views: 955
Posted By paulunderwood
I can say that number is not prime by doing the...

I can say that number is not prime by doing the calculations in my head.

c must be -1 or +1 for any sizable number to be provable.

The real point here is that testing should be done by using...
Forum: Miscellaneous Math 2022-05-01, 23:40
Replies: 29
Views: 955
Posted By paulunderwood
There is no API for 100,000,000 digit k*b^n+c...

There is no API for 100,000,000 digit k*b^n+c candidates. There is only an interface for 2^p-1.

For k*b^n+c you have to write your own. What k,b,n and c are you trying to test?
Forum: And now for something completely different 2022-05-01, 17:07
Replies: 57
Views: 30,780
Posted By paulunderwood
I'm behind an APN these days; I think there is no...

I'm behind an APN these days; I think there is no use in rebooting my router; I probably get lumped in with miscreants. It is up to someone else to make the Wiki entries for Serge's records.
Forum: Software 2022-04-30, 13:38
Replies: 13
Views: 905
Posted By paulunderwood
While it is admirable to attempt testing Mersenne...

While it is admirable to attempt testing Mersenne numbers with llrCUDA, most people run gpuOwl for them. Timing comparisons would be interesting.
Showing results 1 to 25 of 1000

 
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