Hey Gordon,
At 01:42 PM 6/22/2001 -0800, Gordon Bower wrote:
>After seeing a post on this list a few weeks ago I decided to branch out
>and try a few ranges from Michael Hartley's page looking for k*2^n-1
>primes.
>Anyway, a few curious observations I made, which surprised me:
>I have 2 computers, a P2-350 and P3-500. The program executes nearly 2 1/2
>times as fast on the latter as on the former with nothing else
>running. Apparently the Proth code takes advantage of a lot of P3
>features?
You should look into newpgen and prp.exe. These two programs can
be used to speed up your search for k*2^n+/-1 primes.
>With the same version of prime95 and the same version of proth on each
>computer, if you run them both at the same time, under Win2000 proth gets
>a higher priority and all the processing power, while under NT4, it's the
>other way round, and prime95 has to be stopped or have its
>priority reduced in the ini file to not smother proth. Curious.
Windows NT and Win2000 users should consider changing prime95's priority
to two. There have been reports that idle priority doesn't work as documented
in the Microsoft documentation.
Regards,
George
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