Re: Mersenne: Why is trial factoring of small exponents slower than large ones?

2003-02-09 Thread Mary K. Conner
At 05:00 PM 2/7/03 +1300, G W Reynolds wrote: I am using mprime 22.12 on a pentium 166 MMX to do trial factoring. For the exponents currently being assigned from primenet it takes this machine about 12 minutes to factor from 2^57 to 2^58. I thought I would try factoring some small exponents

Mersenne: Prime95 version 23.1 - Pentium 4 improvements

2003-02-09 Thread George Woltman
Version 23.1 seems to be stable enough to use although its really still Beta software. I've not run the full QA suite as I have more changes planned. The Windows version is available at ftp://mersenne.org/gimps/p95v231.zip If there is interest I'll make a Linux version available too. Only P4

Mersenne: version 23.1 timings

2003-02-09 Thread George Woltman
In case you are interested here are the before and after benchmarks for my own P4 Northwood: Intel(R) Pentium(R) 4 CPU 1.60GHz CPU speed: 2311.52 MHz L2 cache size: 512 KB Prime95 version 22.10, RdtscTiming=1 Best time for 384K FFT length: 17.123 ms. Best time for 448K FFT length: 20.686 ms. Best