Re: Mersenne: Re: Self-test

1999-06-10 Thread Brian J Beesley
> I completely agree with you about the importance of heat on the > integrity of the CPU chip. But interestingly enough, heat is > something I feel I can control (for instance, by adding more or > bigger fans) and am satisfied about, as long as my system runs > X hours of self-test, and Y months

Mersenne: Further explanation of the v17 bug?

1999-06-10 Thread Steinar H. Gunderson
Hi all, After the discussion on the v17 bug, I wondered if I could get some more info on it (preferrably to avoid doing such mistakes myself :-) ). I've only heard it referred to as the `shift bug', and I've picked up that v17 was only required if you wanted to double-check `your own results'. (?

RE: Mersenne: Pentium Pro Optimization Help Needed

1999-06-10 Thread Gilmore, John (AZ75)
> The new assemply macros are at ftp://entropia.com/gimps/lucas1p.mac > for you to look at. > [Gilmore, John (AZ75)] I looked - and I am truely impressed. I am slightly conversant in x86 assembly language, and this stuff made my eyes hurt. ___

RE: Mersenne: Pentium Pro Optimization Help Needed

1999-06-10 Thread Don Leclair
Hi George, > I'm trying to optimize prime95 for the Pentium > Pro/PII/PIII architecture. I'm fairly well > versed in various execution units and > latencies, but some mysteries remain. In case you haven't run across it yet, you can download the "Intel Architecture Optimizations Manual" from th

Mersenne: Whither goest thou, Alpha? (Was: EFF and 10,000,000 digits)

1999-06-10 Thread Ernst W. Mayer
David Willmore writes: > >> 2) Was it Intel that bought the Alpha rights? It might have been IBM but >> was NOT Compac. > >2) Yes, it was Compaq. Intel bought foundry technology that is used on the >StrongARM as well as the StrongARM archetecture itself. Actually, things are tad more complicat

Mersenne: M38, SETI, and other random stuff

1999-06-10 Thread Chris Nash
Hi folks, As we all impatiently await verification of M38(?) a really stupid thought occurred to me, so apologies if it's a lot more ignorant than Chuck W.'s "definitive" post on the subject of GIMPS v SETI, or distributed computing in general. If the verification of M38 is making us impatient,

Mersenne: status of exponents

1999-06-10 Thread Jud McCranie
The status page shows that for exponents in the range 3,310,000-3,960,000, there are 225 exponents for which 2 L-L tests have been done, yet there are 40 exponents for which no factor is known, and no LL test has been done. I have 2 questions: 1. Why have 2nd LL tests been done in many cases wh

Re: Mersenne: status of exponents

1999-06-10 Thread Rjpresser
In a message dated 6/10/99, 9:07:19 PM, [EMAIL PROTECTED] writes: > The status page shows that for exponents in the range 3,310,000-3,960,000, > there are 225 exponents for which 2 L-L tests have been done, yet there are > 40 exponents for which no factor is known, and no LL test has been done. I

RE: Inane Stuff (Was: Mersenne: M38, SETI, and other random stuff)

1999-06-10 Thread Gilmore, John (AZ75)
My vote for "Most Inane" would be to the guy a year or two ago who claimed to know for an absolute certainty that there were only, (I think it was) 37 Mersenne primes. Whatever the number was, it was about one more than had been discovered at that point. > -Original Message- > From: Chri

RE: Inane Stuff (Was: Mersenne: M38, SETI, and other random stuff )

1999-06-10 Thread Gilmore, John (AZ75)
> > -Original Message- > > From: Chris Nash [SMTP:[EMAIL PROTECTED]] > > Sent: Wednesday, June 09, 1999 8:32 PM > > To: [EMAIL PROTECTED] > > Subject:Mersenne: M38, SETI, and other random stuff > > > > My apologies for being so inane, but I wonder whether the EFF *b*illio

RE: Inane Stuff (Was: Mersenne: M38, SETI, and other random stuff )

1999-06-10 Thread Aaron Blosser
> [Gilmore, John (AZ75)] Unless someone comes up with a MUCH faster > algorithm, or a parallelizable algorithm, since a 90 GHz Pentium > would > take (to one significant figure) 80 years to test _one_ exponent, my > guess > would be SETI (assuming, of course, that there ac

Re: Mersenne: M38, SETI, and other random stuff

1999-06-10 Thread Spike Jones
Chris Nash wrote: > If the verification of M38 is making us impatient, how on earth would we > feel if SETI did find E.T., and we had to wait thousands of years for our... If SETI found a signal, antennae all over the planet would focus on it and large numbers of brains would consume themselves

RE: Inane Stuff (Was: Mersenne: M38, SETI, and other random stuff )

1999-06-10 Thread Colin Percival
At 07:49 PM 10/06/99 -0700, you wrote: >> > My apologies for being so inane, but I wonder whether the EFF *b*illion >> > digit prime prize or SETI will happen first, too... >> > [Gilmore, John (AZ75)] Unless someone comes up with a MUCH faster > algorithm, or a parallelizable algorit