Hi Yuri,
At 10:48 PM 11/11/98 -0800, Yuri Sorkin wrote:
>I participated in GIMPS from the very beginning,
Yuri was indeed one of the earliest members, LL testing exponents
below 500,000 with a 486. How times have changed!
>And now I see that my P5-166 (SDRAM, MMX, Intel) doesn't get
>from Primenet anything for LL-test quite awhile. Since I'm going to buy a
>new desktop soon and consider its suitability for GIMPS to be a certain
>indicator of satisfactorily performance, I wonder what computers get
>exponents for a test now?
In version 17, less than a P-75 will get factoring work. Less than
a P-133 will get double-checking assignments, P-133 and higher will
get first-time LL tests.
A year from now, less than a P-200 will get double-checking assignments,
P-200 and higher will get first-time LL tests.
If your P-166 is getting double-check assignments now, there are three
possible causes:
1) Your CPU hours per day is set below 24. A P-166 running 12
hours a day is treated like a P-83.
2) Your machine is substantially slower than other P-166s.
Look in local.ini and find the line RollingAverage=xxx.
If xxx if a lot less than 1000, then this is the cause.
3) There is a bug in the program. If so, please send your
ini files to me by private email.
For those on a tight budget, consider building a machine around
the Intel Celeron 300A. There have been many success stories
overclocking this chip to 450MHz with a 100MHz front-side bus.
This suggestion is only for the most knowledgable hardware
enthusiasts - see the Usenet newsgroup comp.sys.intel for more
information and ideas.
Best regards,
George
