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Search: Posts Made By: kriesel
Forum: Software 2021-12-28, 02:45
Replies: 35
Views: 18,691
Posted By kriesel
Reference / how-to thread for Mfactor

As part of the large reference info (https://mersenneforum.org/showthread.php?t=24607) blog, there is an Mfactor reference thread (https://www.mersenneforum.org/showthread.php?t=26246).
Forum: Software 2021-09-14, 23:09
Replies: 35
Views: 18,691
Posted By kriesel
Threads relating to Mfactor's history & development

Yes. The thread (https://www.mersenneforum.org/showthread.php?p=442884#post442884) about the shared KNL machine GIMPS bought contains a fair amount relating to TF, in 2016, including comparisons...
Forum: Software 2020-11-26, 06:56
Replies: 35
Views: 18,691
Posted By kriesel
Preceding post's output error occurs in...

Preceding post's output error occurs in results.txt but not console output. Don't know if that's due to Ernst's source or some wayward edit at my location.


Due to typos or batch script editing...
Forum: Software 2020-11-25, 21:43
Replies: 35
Views: 18,691
Posted By kriesel
output bug with -mm n input

Searching in the interval k=[0, 16336320]
Each of 16 (p mod 60) passes will consist of 1 intervals of length 272272

Factor with k = 68745. This factor is a probable prime.
M(31) has 1...
Forum: Software 2020-03-09, 06:14
Replies: 35
Views: 18,691
Posted By kriesel
index and pass seem to be synonymous. In #4,...

index and pass seem to be synonymous.
In #4, "renames <filename.tmp> to <filename>, thus overwriting the now-obsolete
version of the latter" may cause some trouble on Windows. IIRC Preda did...
Forum: Software 2020-03-08, 19:57
Replies: 35
Views: 18,691
Posted By kriesel
"Poor man's multithreading" and TF_CLASSES

"Poor man's multithreading" is running multiple processes for the same bit level and exponent, with different passmin and passmax. For example, 4-way, to use 4 cores with an msys2 compiled image,...
Forum: Software 2020-02-19, 23:25
Replies: 35
Views: 18,691
Posted By kriesel
Help output

Program output for help is$ ./mfactor.exe -h
INFO: testing qfloat routines...
CPU Family = x86_64, OS = Linux, 64-bit Version, compiled with Gnu C [or other compatible], Version 8.2.0.
INFO: CPU...
Forum: Software 2019-12-09, 08:57
Replies: 35
Views: 18,691
Posted By kriesel
Here's a limits table draft . I vaguely recall...

Here's a limits table draft . I vaguely recall the CUDA factor limit being something like max k = 64 bits, so max factor candidate q would be 64+pbits+1.
Forum: Software 2019-12-08, 23:35
Replies: 35
Views: 18,691
Posted By kriesel
I also had 50 bit exponent limit and 96 bit...

I also had 50 bit exponent limit and 96 bit factor, in the available software tabulation, and could not figure out where I got it from. I gather from reading a bit of your Mfactor code, that the...
Forum: Software 2019-12-07, 22:40
Replies: 35
Views: 18,691
Posted By kriesel
some MFactor past history threads

Thread re Ernst's Mfactor program, primarily if not entirely cpu oriented, begins late 2005:
https://www.mersenneforum.org/showthread.php?t=4939...
Forum: Software 2019-12-07, 22:24
Replies: 35
Views: 18,691
Posted By kriesel
test hardware

I have a motley assortment of old gear available for test including plain pentium, Pentium MMX, Pentium II, Pentium III, some old 32-bit laptops, twin systems containing Core2 Duo E8200 (Vista and...
Forum: Software 2019-12-07, 01:53
Replies: 35
Views: 18,691
Posted By kriesel
An update in factor.c, so obvious, even I can see...

An update in factor.c, so obvious, even I can see it::/*...Known Mersenne prime exponents. This array must be null-terminated. */
const uint32 knowns[] =...
Forum: Software 2019-12-06, 20:34
Replies: 35
Views: 18,691
Posted By kriesel
Ernst's Mfactor program

This thread is being started as a place to put public discussion of how to build, use, or improve the Mfactor program whose source is included with the source of Mlucas. I'm imagining this thread...
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