I recently decided to start switching over from v18 to v19 (yes, I know I
could have months ago, but I thought I'd give the rest of you time to find
all the bugs first.) I did notice a performance improvement -- about 8% on
a 350 doing LL tests, about 2% on an old P-120 doing double-checks. As the
opportunity arises I will probably switch over the other 5 machines I also
am allowed to run the program on.

Something strange happened, though. Version 19 slows down considerably
more in response to my doing other low-demand things on my machine,
reading email/web browsing/etc. Is this just in the nature of v19,
something to do with the optimizations that were added to speed it up? (It
does still average a faster rate in the long run).

I did not change any of the priority settings in prime.ini when switching
versions.

As long as I am writing to the list -- perhaps someone could explain in a
little more detail than readme.txt does as to what the valid range of
values for the Priority variable are and what the effect of each is on NT
and 95? I experimented a little by trial and error last summer when a
friend running a 3-D screen saver offered to let me run the program on his
machine, but we never had much success fine-tuning it so as to not
interfere with his work.

GRB


_________________________________________________________________
Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm
Mersenne Prime FAQ      -- http://www.tasam.com/~lrwiman/FAQ-mers

Reply via email to