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Forum: Number Theory Discussion Group 2022-09-28, 15:25
Replies: 51
Views: 12,175
Posted By bsquared
You should not be discouraged, your sieve does...

You should not be discouraged, your sieve does very well and demonstrates knowledge of several important optimizations. And the 2310 version is definitely the best way to go for a huge interval like...
Forum: YAFU 2022-09-28, 14:58
Replies: 2
Views: 89
Posted By bsquared
Just to note, building with CFLAGS=-DGGNFS_MPQS...

Just to note, building with CFLAGS=-DGGNFS_MPQS during the final make should enable the original mpqs code.
Forum: Number Theory Discussion Group 2022-09-28, 14:41
Replies: 51
Views: 12,175
Posted By bsquared
Yafu does this too. Multithreading in yafu works...

Yafu does this too. Multithreading in yafu works by taking the wheel concept a step further. We set up N sieve arrays, each array is a bitvector over one of the residue classes of the wheel...
Forum: Number Theory Discussion Group 2022-09-28, 13:10
Replies: 51
Views: 12,175
Posted By bsquared
The code at that link has different parameters...

The code at that link has different parameters for input to the segmented_bit_sieve_wheel function... it appears to want a start and stop interval, not stop and wheel_size parameters.

But anyway,...
Forum: YAFU 2022-09-28, 03:27
Replies: 2
Views: 89
Posted By bsquared
yafu with ggnfs

As mentioned here (https://www.mersenneforum.org/showpost.php?p=614360&postcount=217), the microecm/tinyecm code in yafu appears to be helpful in the ggnfs lattice sievers as a replacement for mpqs...
Forum: Factoring 2022-09-28, 02:25
Replies: 216
Views: 33,210
Posted By bsquared
Agreed on the CADO note. However I think on most...

Agreed on the CADO note. However I think on most jobs, microecm is completely sufficient. Anything with mfba/r of 64 or less can use microecm as a complete replacement for mpqs. For really big...
Forum: Factoring 2022-09-27, 13:24
Replies: 2
Views: 179
Posted By bsquared
Thank you Jeff, I am happy to see this...

Thank you Jeff, I am happy to see this announcement!

I just wanted to add, Jeff did much more than just add significant optimizations to the low-level code in microecm. He also spotted an...
Forum: YAFU 2022-09-27, 01:10
Replies: 58
Views: 179
Posted By bsquared
No, not using the improved version that I know...

No, not using the improved version that I know of. It has been working for me just fine on several windows systems. Does it run single threaded?
Forum: Programming 2022-09-26, 17:28
Replies: 4
Views: 683
Posted By bsquared
Agreed. Yafu uses compressstoreu along with...

Agreed. Yafu uses compressstoreu along with popcount in its bucket sieve.
Forum: Hardware 2022-09-26, 14:05
Replies: 17
Views: 81,329
Posted By bsquared
Thank you for this! Lots of great info.

Thank you for this! Lots of great info.
Forum: YAFU 2022-09-26, 02:19
Replies: 58
Views: 179
Posted By bsquared
When there is no final newline then feof()...

When there is no final newline then feof() returns true regardless of if the previous fgets() read anything or not. So there has to be an extra check if the fgets() has meaningful data in it in...
Forum: YAFU 2022-09-23, 17:23
Replies: 58
Views: 179
Posted By bsquared
Here's ...

Here's (https://www.mersenneforum.org/showthread.php?t=16480)a thread for GPU-ECM.

And here's (https://www.mersenneforum.org/showthread.php?t=27103)a thread for Seth Trosi's improved CGBN...
Forum: YAFU 2022-09-23, 17:19
Replies: 58
Views: 179
Posted By bsquared
Did you Ctrl-C out of the gpu-ecm run? Threads...

Did you Ctrl-C out of the gpu-ecm run? Threads is temporarily set to 1 to run gpu-ecm, but it should be set back to whatever it was before. A Ctrl-C might prevent it being set back.
Forum: YAFU 2022-09-22, 16:28
Replies: 58
Views: 179
Posted By bsquared
No, that's not right. Thanks, I'll take a look.

No, that's not right. Thanks, I'll take a look.
Forum: YAFU 2022-09-22, 14:45
Replies: 58
Views: 179
Posted By bsquared
Problem in tune() fixed. Also fixed an issue in...

Problem in tune() fixed.
Also fixed an issue in microecm when compiling with gcc (verified it works now with gcc-11.1.0).
Re-built and re-uploaded the windows executables.
Forum: YAFU 2022-09-22, 00:18
Replies: 58
Views: 179
Posted By bsquared
Sweet! Good to see progress. Actually I...

Sweet! Good to see progress.

Actually I realized now that I didn't update the msieve dependency, so maybe that will take care of the error you're seeing now. Might not be able to get that...
Forum: YAFU 2022-09-21, 22:29
Replies: 58
Views: 179
Posted By bsquared
I re-uploaded yafu-x64-gc.exe. This time I...

I re-uploaded yafu-x64-gc.exe.

This time I did a complete rebuild of the entire dependency chain starting with mpir-3.0.0 (core2), then ecm-7.0.4, ytools, ysieve, and yafu. In all MSVC projects I...
Forum: Factoring 2022-09-21, 18:21
Replies: 216
Views: 33,210
Posted By bsquared
Update: I borrowed some single-limb vector...

Update:
I borrowed some single-limb vector multiply functions from avx-ecm to make a vectorized version of microecm that operates up to 52 bits (the precision limit of the multipliers). Here it is...
Forum: YAFU 2022-09-21, 18:14
Replies: 58
Views: 179
Posted By bsquared
I checked in yafu-x64-gc.exe, which I created by...

I checked in yafu-x64-gc.exe, which I created by linking against a generic C version of MPIR-3.0.0. Please test it and see if it's any better.
Forum: YAFU 2022-09-20, 17:25
Replies: 58
Views: 179
Posted By bsquared
Here...

Here (https://github.com/bbuhrow/yafu/blob/master/yafu-x64.exe).

By the way, I now suspect the linked GMP library as the problem, since the initial batch of primes is found just fine. The illegal...
Forum: YAFU 2022-09-20, 16:17
Replies: 58
Views: 179
Posted By bsquared
Can you share the last 10-15 lines of session.log...

Can you share the last 10-15 lines of session.log after an attempted startup?
Forum: YAFU 2022-09-20, 15:35
Replies: 58
Views: 179
Posted By bsquared
I don't know why it would crash on windows 7 and...

I don't know why it would crash on windows 7 and not windows 10. But my understanding of the dependencies of Visual Studio 2022 is very murky. Maybe it requires win10....

My hope is that it is a...
Forum: YAFU 2022-09-20, 13:49
Replies: 58
Views: 179
Posted By bsquared
Version 2.10

I checked in version 2.10.

Hopefully fixes the recently reported crashing issue right after yafu starts on systems without BMI1/2 (this is still not something I can directly test, so let me know...
Forum: YAFU 2022-09-20, 13:10
Replies: 438
Views: 61,049
Posted By bsquared
You'll need to add USE_BMI2=1 to the make line as...

You'll need to add USE_BMI2=1 to the make line as well. Most cpu's that have avx2 also have bmi2... if yours doesn't then you'll have to remove both the avx2 and bmi2 options.
Forum: Factoring 2022-09-19, 13:57
Replies: 216
Views: 33,210
Posted By bsquared
Over the past few weeks, Jeff Hurchalla has...

Over the past few weeks, Jeff Hurchalla has driven a series of updates to the microecm code. Foremost among them a faster way to do Montgomery arithmetic on single-limb inputs. He has also been...
Showing results 1 to 25 of 1000

 
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