Mersenne: Speeding Up The Speediest Yet
Dear Base: Bya twist of extraordinary luckI procured a 3GHz. P IV with 1 GByte of RAM which translates to 12 possible 1 million candidate tests per year. But I found a way to accelerate this behemoth even more! By installing the www.memokit.com memory optimizer and setting the priority of PRIME95 to REALTIME, I brought the .081 spec down to .063 at the very top of the Benchmark list. Every little smidgin counts, eh? Best Wishes, Stefanovic
Re: Mersenne: Speeding Up The Speediest Yet
On Saturday 12 July 2003 13:08, Scott Gibbs wrote: Dear Base: By a twist of extraordinary luck I procured a 3GHz. P IV with 1 GByte of RAM which translates to 12 possible 1 million candidate tests per year. But I found a way to accelerate this behemoth even more! By installing the www.memokit.com memory optimizer and setting the priority of PRIME95 to REALTIME, I brought the .081 spec down to .063 at the very top of the Benchmark list. 1) Assuming your system is otherwise idle, changing the priority should have zero effect. 2) Again assuming your system doesn't run loads of other stuff, 128 MBytes is more than sufficient for running LL tests in Prime95. More is useful for P-1 stage 2 and ECM, depending on the exponent. 3) I've no idea what the memory optimizer does, but any bigger change than a few percent is most unlikely - unless you do something like overrrunning the memory clock? BTW I'm getting 0.084 benchmark for 1792K FFT run length on a 2.66 GHz P4 using dual-channel PC2100 DDR memory, e7205 chipset. 0.063 sounds about right for a 3GHz system using dual-channel PC3200 DDR. Regards Brian Beesley _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: Re: Mersenne Digest V1 #1080
Robert Braunwart wrote: I'm having trouble with one of my computer contacting PrimeNet. It is supposed to connect every day, but hasn't connected for two weeks. I get the Error 29 message. I have looked at the explanation for Error 29 at PrimeNet, but none of the four possibilities apply to me. I am running Prime95 v. 21.4 and have not upgraded in a long time. Also, I have been running Prime95 on this computer for a long time. Any suggestions? Bob... The message forwarding service is still obviously down :-( George was going to ask Scott if he could get Entropia to restart the service again... about a week ago... It still hasn't been apparently... since a number of clients I have, haven't been able to contact the server since June 27th... Hopefully, the service can be restarted in the next two weeks... or there could be a considerable amount of re-assignments of exponents by PrimeNet... The best solution might be upgrading to v22, but again, unfortunately, that may not be possilbe for a number of users, who don't have access to certain clients anymore... In which case, there COULD BE... a significant decrease in computing power to the project :-( Eric _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
