Prime95

[stasio]

Prime95 v27.7 Build 2


Windows 64-bit: ftp://mersenne.org/gimps/p95v277.win64.zip
Windows 32-bit: ftp://mersenne.org/gimps/p95v277.win32.zip


1. SoB cannot package a default prime.txt with the Mac OS X version because the Mac version changes the working directory to ~/Prime95. Mac version changed to copy a prime.txt file from the application bundle to ~/Prime95. Fixed in version 27.7 build 2.
2. Root cause of several false prime reports in recent years found. Fixed in version 27.7 build 2.

[bro20000]

Thanx for this mate.

[Ice009]

Should 27.7 be bluescreening within seconds when 26.6 at the same OC passes over an hour and half at the same settings? I can also pass IBT too at the same overclock, but Prime95 27.7 Bluescreens within seconds.

Edit : Can anyone give me some advice? If 27.7 Bluescreens within seconds and a previous version is OK, does that mean my OC is unstable or that 27.7 might be the problem?

[stasio]

Prime95 27.9 Build 1

ftp://mersenne.org/gimps/p95v279.win32.zip
ftp://mersenne.org/gimps/p95v279.win64.zip

- minor bug fixes

[NEOAethyr]

Hmm new builds, I'll have to check it out.
Thanks for the heads up stasio .

[stasio]

Prime95v.28.1 Build 1 (64-bit)

http://www.mediafire.com/?awambpo41sy6qns

From developer:

For any Haswell owners that are interested, an evaluation version 28.1 is available. I have some ideas to improve it further, but they will take some time to implement.

I sure hope it works correctly because I've started using it on my Haswell box

[Barr3l Rid3r]

Prime95v.28.1 Build 1 (64-bit)

http://www.mediafire.com/?awambpo41sy6qns

From developer:

Any idea why this keeps rebooting my AMD FX computer? It was fine in 27.9

[stasio]

Stay with 27.9 ,as this preliminary version is for Haswell.

[stasio]

Prime95v.28.1 Build 2 (64-bit)

http://www.mediafire.com/?pj2erd72t1oyb8n

- fixed the bad self-test data

[stasio]

Prime95v.28.3 Build 1 Beta (32/64-bit)

ftp://mersenne.org/gimps/p95v283.win32.zip
ftp://mersenne.org/gimps/p95v283.win64.zip
ftp://mersenne.org/gimps/p95v283.linux64.tar.gz
ftp://mersenne.org/gimps/p95v283.MacOSX.zip

Prime95 version 28.3 is available. This version is for you intrepid beta testers. I've run the torture test and done some QA, but I haven't run any double-checks yet. I don't expect any problems, and I am now using it on my computers.

This version includes nearly all the Haswell optimizations I plan on implementing. A few of these changes may also benefit Sandy/Ivy Bridge machines. On my Sandy Bridge I'm seeing a 1.5% improvement.

[stasio]

Prime95v.28.4 Build 1 Beta

ftp://mersenne.org/gimps/p95v284.win32.zip
ftp://mersenne.org/gimps/p95v284.win64.zip
ftp://mersenne.org/gimps/p95v284.linux64.tar.gz
ftp://mersenne.org/gimps/p95v284.MacOSX.zip

Reduced memory usage.
This may make some single-thread benchmarks slower, but when
running several workers on machines where memory is a bottleneck there should be a
small performance increase.

[stasio]

Prime95v.28.5 Build 1 Beta

ftp://mersenne.org/gimps/p95v285.win32.zip
ftp://mersenne.org/gimps/p95v285.win64.zip
ftp://mersenne.org/gimps/p95v285.linux64.tar.gz
ftp://mersenne.org/gimps/p95v285.MacOSX.zip

1) Changed the output to the worker windows during LL and PRP tests. The new output includes
the estimated time to complete the test. There are two new options described in undoc.txt:
ClassicOutput and OutputRoundoff.
2) Added some new options described in undoc.txt: ScaleOutputFrequency, TitleOutputFrequency,
and SilentVictoryPRP.
3) Benchmarking on hyperthreaded machines now times only the most common cases. Specifically,
hyperthreading is used only in the one cpu and all cpu cases.
4) Benchmarking trial factoring is now off by default. Prime95 should not be used for trial
factoring. GPUs are about 100 times more efficient at that task.
5) On multi-core machines, benchmarks are now run on multiple workers. This measures the effect
of memory bandwidth during testing and helps you select the setup that gives you the most throughput.
6) There are many new options described in undoc.txt to customize the benchmarking process

[alpha0ne]

^ Thanks !!

[stasio]

Prime95v.28.5 Build 2

ftp://mersenne.org/gimps/p95v285.win32.zip
ftp://mersenne.org/gimps/p95v285.win64.zip
ftp://mersenne.org/gimps/p95v285.linux64.tar.gz
ftp://mersenne.org/gimps/p95v285.MacOSX.zip

-added a preference to bypass some of Mac OS X Mavericks' power saving features.

[stasio]

Prime95v.28.10 Build 1

ftp://mersenne.org/gimps/p95v2810.win32.zip
ftp://mersenne.org/gimps/p95v2810.win64.zip

I took down the links to 28.9 because of recently discovered torture test issues on SSE2 machines.
There is little reason to upgrade from 28.7. Users have reported speeds plus-or-minus a couple of percent.

[stasio]

Prime95v.29.4 Build 5

ftp://mersenne.org/gimps/p95v294b5.win32.zip
ftp://mersenne.org/gimps/p95v294b5.win64.zip

1) GIMPS has a new sub-project -- finding (probable) prime Mersenne cofactors.
This sub-project has two parts: 1) Running PRP tests, and 2) Finding
additional factors. To support this new sub-project there are three
new work preferences: PRP on Mersenne cofactors, PRP double-checking on
Mersenne cofactors, ECM on Mersenne cofactors.
2) Like LL tests, PRP tests now support shift counts to aid in running double-checks.
Shift counts are only supported for Mersenne numbers and Mersenne cofactors.
3) PRP tests now support a type of low overhead error checking that almost guarantees
correct results even on flaky hardware. We call this Gerbicz error-checking after
it was proposed by Robert Gerbicz at mersenneforum.org. This error-check only
works for base-2 numbers.
4) Because PRP tests are highly reliable, we now offer the option to do PRP tests
instead of Lucas-Lehmer primality tests. There are 3 new work preferences
similar to LL work preferences: first-time PRP tests, world record PRP tests,
PRP tests on 100 million digit numbers, and PRP double-checking.
If you are looking for a 100 million digit prime, PRP testing is recommended
rather than LL testing.
5) For non-base-2 PRP tests, there is a new option to run each iteration twice and
rollback if a mismatch occurs. Useful only on flaky hardware due to the obvious
high overhead.

[alpha0ne]

^ Thanks

[stasio]

Prime95v.29.4 Build 8 (64-bit)

ftp://mersenne.org/gimps/p95v294b8.win64.zip

[stasio]

Prime95v.29.5 Build 5 (64-bit)

ftp://mersenne.org/gimps/p95v295b5.win64.zip

[stasio]

Prime95v.29.5 Build 8 (64-bit)

ftp://mersenne.org/gimps/p95v295b8.win64.zip

[stasio]

Prime95v.29.5 Build 9 (64-bit)

ftp://mersenne.org/gimps/p95v295b9.win64.zip

[stasio]

Prime95v.29.6 Build 2 (64-bit)

ftp://mersenne.org/gimps/p95v296b2.win64.zip

[stasio]

Prime95v.29.6 Build 3

ftp://mersenne.org/gimps/p95v296b3.win64.zip
ftp://mersenne.org/gimps/p95v296b3.win32.zip

[stasio]

Prime95v.29.6 Build 4 (64-bit)

ftp://mersenne.org/gimps/p95v296b4.win64.zip

[stasio]

Prime95v.29.6 Build 5 (64-bit)

ftp://mersenne.org/gimps/p95v296b5.win64.zip