v24.13 release candidate 1

[Prime95]

Version 24.13 RC1 is ready.

1) Better Celeron D timings.
2) Fixes all reported trial factoring bugs on big exponents.
3) Error 2252 fixed for some users.
4) AMD64 torture test now runs both prefetchw and non-prefetchw versions of the FFT. Anecdotal evidence suggests that version 23's non-prefetchw FFTs were tougher on the CPU.
5) Prime.log file now limited to 2M bytes rather than 250K.
6) Fixed crash bug when P-1 stage 2 didn't have enough memory and an LL save file already existed.

See http://www.mersenneforum.org/showpos...66&postcount=6 for download links.

[JuanTutors]

Is this a beta version or an actual version?

[cheesehead]

At http://www.mersenne.org/gimps/ the p95v2413.exe file is only 27 bytes long.

[Frodo42]

When running the Linux ver. 24.13 with this in worktodo.ini

Pfactor=55459,2,9449770,1,49,1.6

the program stall and then on kill exits on with this statement

[1]+ Floating point exception./mprime -d

It runs fine with ver. 24.12.

Anyhow though I just wanted to report this ... I going on with my factoring for SoB with ver. 24.12.

Thank you for all your hard work George.

[Prime95]

Frodo42, I'll have a fix later today.

[mathemajikian]

Are these newer versions of Mprime safe to use for day to day testing?

[Prime95]

Originally Posted by mathemajikian

Are these newer versions of Mprime safe to use for day to day testing?

Yes. If no serious bugs are found 24.13 will become the official version.

[Xyzzy]

This is with mprime2413.tar.gz

mv@debian:~/Desktop/temp$ ./mprime -m
./mprime: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

[garo]

I got the same problem with 24.12 RC2 as well. I downloaded the statically linkes version and it worked fine. My machine has the latest kernel but it seems to only have libstdc++5.0.7

[mathemajikian]

For all those FreeBSD users in the world like myself to make 24.13 run just download the sprime version of this release and do:

# brandelf -t Linux mprime

of course you have to have linux emulation enabled. How to enable linux emulation can be found here:

http://www.freebsd.org/doc/en_US.ISO.../linuxemu.html

[JuanTutors]

OK I don't know if anyone else is getting performance improvements as I am, but I'm getting around an 8%+ increase in speed on this P4 that I'm posting my benchmarks on here. Wait until you see my Sempron laptop, though (I'll let you calculate it yourself )

This computer has a 512Mb and a 256Mb ram, don't know what kind or speed, but I think 133Mhz.

Intel(R) Pentium(R) 4 CPU 2.40GHz
CPU speed: 2393.98 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 15.781 ms.
Best time for 448K FFT length: 18.723 ms.
Best time for 512K FFT length: 21.454 ms.
Best time for 640K FFT length: 25.970 ms.
Best time for 768K FFT length: 31.410 ms.
Best time for 896K FFT length: 36.911 ms.
Best time for 1024K FFT length: 41.689 ms.
Best time for 1280K FFT length: 54.527 ms.
Best time for 1536K FFT length: 65.898 ms.
Best time for 1792K FFT length: 78.910 ms.
Best time for 2048K FFT length: 90.543 ms.
[Sun Jul 10 16:06:49 2005]
Compare your results to other computers at http://www.mersenne.org/bench.htm
That web page also contains instructions on how your results can be included.

Intel(R) Pentium(R) 4 CPU 2.40GHz
CPU speed: 2394.13 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 18.890 ms.
Best time for 640K FFT length: 24.375 ms.
Best time for 768K FFT length: 30.051 ms.
Best time for 896K FFT length: 34.774 ms.
Best time for 1024K FFT length: 39.263 ms.
Best time for 1280K FFT length: 50.691 ms.
Best time for 1536K FFT length: 62.606 ms.
Best time for 1792K FFT length: 72.740 ms.
Best time for 2048K FFT length: 81.712 ms.
Best time for 2560K FFT length: 107.720 ms.
Best time for 3072K FFT length: 137.351 ms.
Best time for 3584K FFT length: 159.894 ms.
Best time for 4096K FFT length: 184.159 ms.
Best time for 58 bit trial factors: 12.161 ms.
Best time for 59 bit trial factors: 12.063 ms.
Best time for 60 bit trial factors: 12.218 ms.
Best time for 61 bit trial factors: 12.299 ms.
Best time for 62 bit trial factors: 13.170 ms.
Best time for 63 bit trial factors: 13.175 ms.
Best time for 64 bit trial factors: 16.291 ms.
Best time for 65 bit trial factors: 16.230 ms.
Best time for 66 bit trial factors: 16.246 ms.
Best time for 67 bit trial factors: 16.234 ms.