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Forum: YAFU 2022-10-02, 19:31
Replies: 7
Views: 460
Posted By bsquared
I'll have to check, maybe I didn't protect all of...

I'll have to check, maybe I didn't protect all of the avx512 code. You need avx512 to get any speedup.
Forum: YAFU 2022-10-02, 15:25
Replies: 67
Views: 663
Posted By bsquared
Yes, probably. I suspect there is an exit()...

Yes, probably. I suspect there is an exit() buried in msieve for that condition... but I'm unable to check at the moment. There is a option -snfs_xover (I think?) which you should probably set...
Forum: YAFU 2022-10-02, 14:54
Replies: 5
Views: 109
Posted By bsquared
I think above 110 or 120 digits it will try to...

I think above 110 or 120 digits it will try to use the triple large prime variation. And it's possible there are intrinsics in use there that are not supported on some processors. It's not a path...
Forum: YAFU 2022-09-30, 13:55
Replies: 7
Views: 460
Posted By bsquared
I've been studying and working with the ggnfs...

I've been studying and working with the ggnfs lattice siever lately. The assembly code is pretty much unassailable, but there are C equivalents for most of the assembly code. I've made some...
Forum: Information & Answers 2022-09-29, 04:57
Replies: 25
Views: 556
Posted By bsquared
I haven't tried getting Cuda to work on my WSL...

I haven't tried getting Cuda to work on my WSL install, and now I'm thinking I don't want to try :max:

The stuff you are trying makes sense... wish I could help.
Forum: YAFU 2022-09-28, 21:43
Replies: 7
Views: 460
Posted By bsquared
I don't know, their ecm looks pretty Serious......

I don't know, their ecm looks pretty Serious... Edwards curves, bytecode driven...

But I've communicated with Paul Z. before, I can see if he's interested.
Forum: Number Theory Discussion Group 2022-09-28, 15:25
Replies: 53
Views: 12,588
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: 7
Views: 460
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: 53
Views: 12,588
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: 53
Views: 12,588
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: 7
Views: 460
Posted By bsquared
ggnfs improvements

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: 33,440
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: 7
Views: 498
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: 67
Views: 663
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: 876
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: 19
Views: 87,400
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: 67
Views: 663
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: 67
Views: 663
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: 67
Views: 663
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: 67
Views: 663
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: 67
Views: 663
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: 67
Views: 663
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: 67
Views: 663
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: 33,440
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: 67
Views: 663
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.
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