mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 1000
Search took 0.27 seconds.
Search: Posts Made By: frmky
Forum: NFS@Home 2021-07-31, 18:36
Replies: 177
Views: 12,034
Posted By frmky
It's the 32 GB version, but we need to store both...

It's the 32 GB version, but we need to store both the matrix and its transpose on the card in CSR format. Otherwise random reads from global memory kill performance. So we can go up to about 25M...
Forum: NFS@Home 2021-07-31, 06:50
Replies: 177
Views: 12,034
Posted By frmky
529__151_7m1 is done and posted. With the new CUB...

529__151_7m1 is done and posted. With the new CUB SpMV code, the LA took 35.5 minutes to solve a 4.72M matrix on a Tesla V100.
Forum: Msieve 2021-07-30, 21:56
Replies: 42
Views: 22,537
Posted By frmky
After reimplementing the CUDA SpMV with CUB, the...

After reimplementing the CUDA SpMV with CUB, the Tesla V100 now takes 36 minutes.
Forum: Msieve 2021-07-27, 22:07
Replies: 2,039
Views: 169,648
Posted By frmky
An overnight search on 2,2870M found another...

An overnight search on 2,2870M found another about the same e-score, but nothing better.
n:...
Forum: Msieve 2021-07-27, 06:48
Replies: 2,039
Views: 169,648
Posted By frmky
Here's a small improvement. I'll wrap my search...

Here's a small improvement. I'll wrap my search up tomorrow.
n:...
Forum: Msieve 2021-07-26, 06:45
Replies: 2,039
Views: 169,648
Posted By frmky
I've posted 2,1404+ and 2,2630M. Here's an early...

I've posted 2,1404+ and 2,2630M. Here's an early hit for 2,2870M. Still searching.
n:...
Forum: Msieve 2021-07-21, 17:56
Replies: 2,039
Views: 169,648
Posted By frmky
Great! Is anyone still working on 2,1404+ or...

Great! Is anyone still working on 2,1404+ or 2,2630M? It appears we have good polys for both now. That just leaves 2,2870M.
Forum: Msieve 2021-07-21, 05:33
Replies: 2,039
Views: 169,648
Posted By frmky
2,1437- is queued for sieving.

2,1437- is queued for sieving.
Forum: Msieve 2021-07-19, 03:50
Replies: 5
Views: 203
Posted By frmky
You need to copy over not only the msieve binary...

You need to copy over not only the msieve binary but also the built CUDA libraries in their directories. Create a cub directory and copy sort_engine.so from your build ./cub directory to that one.
Forum: NFS@Home 2021-07-13, 23:08
Replies: 177
Views: 12,034
Posted By frmky
Factored and posted. Just over 1 hour for a 5M...

Factored and posted. Just over 1 hour for a 5M matrix on a Tesla V100.
Forum: NFS@Home 2021-07-12, 03:18
Replies: 177
Views: 12,034
Posted By frmky
I'll take 742__757_7m1. I'll use it to exercise...

I'll take 742__757_7m1. I'll use it to exercise the GPU LA code on a new problem.
Forum: Msieve 2021-07-02, 19:29
Replies: 5
Views: 346
Posted By frmky
I reimplemented the NxB_BxB CUDA kernel to bite...

I reimplemented the NxB_BxB CUDA kernel to bite off 2 bits at a time and make 4 (or actually 3 since the 00 table isn't needed) arrays in GPU shared memory rather than doing this on the cpu and...
Forum: Msieve 2021-06-23, 20:28
Replies: 2,039
Views: 169,648
Posted By frmky
Thanks for the catch! Will do.

Thanks for the catch! Will do.
Forum: Msieve 2021-06-23, 19:41
Replies: 2,039
Views: 169,648
Posted By frmky
Sam asked NFS@Home to complete the following five...

Sam asked NFS@Home to complete the following five numbers by GNFS, so I thought it best to ask for polynomials from the world experts. These will make "easy" numbers for the lasievef queue. Anyone up...
Forum: Msieve 2021-06-23, 19:25
Replies: 8
Views: 390
Posted By frmky
It looks like it happened about when the first...

It looks like it happened about when the first checkpoint would be expected to be written. Does a msieve.dat.chk or msieve.dat.bak.chk file exist in the directory?
Is space available on the drive? ...
Forum: Factoring 2021-06-12, 19:14
Replies: 424
Views: 18,089
Posted By frmky
Brilliant even!

Brilliant even!
Forum: Factoring 2021-06-07, 22:08
Replies: 424
Views: 18,089
Posted By frmky
Sorry, I forgot to mark (9, -4) in the...

Sorry, I forgot to mark (9, -4) in the spreadsheet. It's almost done.
Forum: Factoring 2021-06-07, 02:03
Replies: 424
Views: 18,089
Posted By frmky
For these polynomials, there is no small prime p...

For these polynomials, there is no small prime p for which the algebraic polynomial mod p is irreducible. The square root algorithm requires one. msieve forges ahead anyway with a small prime, which...
Forum: NFS@Home 2021-05-29, 18:34
Replies: 7
Views: 424
Posted By frmky
The university is doing a disaster drill today...

The university is doing a disaster drill today which includes cutting off access to the internet and checking the failover of critical systems. So access today will be sporadic.

The error is...
Forum: Msieve 2021-05-22, 16:16
Replies: 101
Views: 44,554
Posted By frmky
As further evidence that the filtering bug is...

As further evidence that the filtering bug is squashed, I just completed a run using 33-bit large primes with over 1 billion unique relations.

https://pastebin.com/J6hbcjzD
Forum: NFS@Home 2021-05-18, 21:04
Replies: 75
Views: 19,437
Posted By frmky
The results processing scripts are back on and...

The results processing scripts are back on and caught up.
Forum: NFS@Home 2021-05-17, 05:52
Replies: 75
Views: 19,437
Posted By frmky
Yes, the server went down last night for a few...

Yes, the server went down last night for a few hours while I slept. The PHP memory heap manager zend_mm_heap became corrupted and took down the web server. First time I've seen that error. Apache...
Forum: NFS@Home 2021-05-15, 16:37
Replies: 75
Views: 19,437
Posted By frmky
The disks are the slowest part of the system....

The disks are the slowest part of the system. With results processing off reads are currently about 1MB/s and writes bouncing between 5-10 MB/s It's RAID6 on spinning disks, both of which slows it...
Forum: NFS@Home 2021-05-15, 16:07
Replies: 75
Views: 19,437
Posted By frmky
Work has been going out, but it gets immediately...

Work has been going out, but it gets immediately gobbled up. It seems nearly everyone wants work from the lasieve_5f queue, so I've temporarily stopped feeding work from the other queues until those...
Forum: Msieve 2021-05-12, 18:47
Replies: 42
Views: 22,537
Posted By frmky
Set the cache size in the source, optionally...

Set the cache size in the source, optionally remove the loop unrolling, set the optimization flags for the machine in Makefile (really just -Ofast -mcpu=native is usually fine) and compile. In the...
Showing results 1 to 25 of 1000

 
All times are UTC. The time now is 11:37.


Sun Aug 1 11:37:32 UTC 2021 up 9 days, 6:06, 0 users, load averages: 1.36, 1.34, 1.27

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.