Prime95 version 29.6/29.7/29.8

[pepi37]

Originally Posted by VBCurtis

With a little bit of experience, you'll know which FFT is used; it's not like LLR where the FFT choice has multiple inputs (k and n), so you'll learn the approximate cutoffs in fairly short time.

If you post the architecture you run P95 on, I bet some experienced user can share them from (human) memory.

Yes ut since FMA and AVX2 appear , calculation is not easy anymore.

[ixfd64]

Originally Posted by S485122

On the website also there are some links that deserve corrections, it is still version 3 that is posted. Also on the site on the download page all links point to http instead of https.

Jacob

The links have been updated, but the header still says version 29.8 build 3 is the latest.

Also, only the mersenne.org HTTP mirror works. The others (mersenneforum.org and mersenne.ca) currently give a 404 error.

[James Heinrich]

Originally Posted by ixfd64

Also, only the mersenne.org HTTP mirror works. The others (mersenneforum.org and mersenne.ca) currently give a 404 error.

I forced an update of the mersenne.ca mirror so those download links should work. I'm not sure who can upload to mersenneforum.org

[Xyzzy]

Originally Posted by ixfd64

The others (mersenneforum.org and mersenne.ca) currently give a 404 error.

The forum mirror works for us.

https://mersenneforum.org/gimps/

Originally Posted by James Heinrich

I'm not sure who can upload to mersenneforum.org

We update the mirror monthly. (It is current now.)

[ixfd64]

@George: the front page and the red header on the downloads page still say build 3 is the latest version.

[mackerel]

I guess this a feature request. Please can all the custom settings in torture test window and also benchmark settings be retained between runs? Gets a bit tedious typing it in each time when trying different hardware configurations.

[PhilF]

I think I have discovered an abnormal behavior in mprime 29.8 build 6.

While running ECM curves with GmpEcmHook=1, when it finishes a curve it updates results.txt but leaves the backup files in place. If the program is then interrupted before the backup files are updated again, then when restarted it resumes the previous curve data and completes it, and writes a duplicate entry for it in results.txt.

Probably the backup files should be deleted when results.txt gets updated.

[ixfd64]

hwloc 2.1 was released a few days ago: https://www.open-mpi.org/software/hwloc/v2.1

George, does this fix any of the issues encountered using the previous version?

[Prime95]

Originally Posted by ixfd64

George, does this fix any of the issues encountered using the previous version?

I don't think there were any issues with the previous version. There was one bug that I thought could be hwloc related, but it turned out to be a prime95 bug dealing with a CPU that had multiple L3 caches.

[Jwb52z]

If a user has 29.8 build 5, what are the circumstances under which build 6 is necessary or just a good idea instead?

[Prime95]

Originally Posted by Jwb52z

If a user has 29.8 build 5, what are the circumstances under which build 6 is necessary or just a good idea instead?

See second post in this thread:

22) P-1 is frequently missing factors of numbers of the form 2*3^n+1. Fixed in 29.8 build 6.
23) In a throughput benchmark on machines with multiple L3 caches, some combinations of number-of-cores / number-of-workers would raise errors setting affinity or crash. Fixed in 29.8 build 6.

So, basically nobody needs to upgrade from build 5 to build 6.