completed assignments, but on further
reflection I don't think that is necessary. There aren't that many available
and certainly not at the higher end of the current range. They will more
than likely be P-1 tested when double-checked.
Steve
-Original Message-
From: Daran [EMAIL PROTECTED
goes relative quickly. If it were a question of factoring from 65 to 66
versus P-1 first, then I think the P-1 wins easily.
Steve
-Original Message-
From: Daran [EMAIL PROTECTED]
snip
When the TF limits were originally decided, it was assumed that a sucessful
TF would save 1.03 or 2.03
thanks to xyzzy for the fora! (plugh. 'you are at the Y2 room.' go
back. 'you are in a maze of twisty passages, all alike.' xyzzy.)
Aaron == Aaron Blosser [EMAIL PROTECTED] writes:
at work lately i've been trying to set up a dual-P4 win2k
system with prime95. but when it
thanks for the new forums, George. (fora?)
at work lately i've been trying to set up a dual-P4 win2k system with
prime95. but when it boots only one of the prime95 starts up when i
log in. both are set for start at bootup each with cpu-affinity
hard-coded.
i've tried with both 22.7 22.8 .
a need to try to delete the registry entry. And the box will now show as
unchecked.
Hope that helps,
Steve Harris
-Original Message-
From: A T Schrum [EMAIL PROTECTED]
Date: Wednesday, July 17, 2002 5:26 PM
No go. The box was unchecked. I checked it, restarted Prime95, and the
error
hello Pierre,
you might want to try a comprehensive memory hammer test,
such as walking 1s 0s .
/eli
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Mersenne Prime FAQ --
hello Roland,
could the CPU be overheating? what is the ambient temperature in the
room? have you verified cpu fan and other case fans are operating?
is plenty of hot air exiting the power supply fan? P4 has thermal
protection which will slow selected areas of the chip, whichever
portions are
The default for either network retries or modem retries (I forget which, big
surprise) is 2 minutes. If there is a communications problem with the
machine (asking for exponents but not receiving them for some reason), that
would explain the timing. Also, if the machine is running unattended and
Don't be so hard on Phil, I made not only a mistake but one that was very
easy to catch. I should know by now better than to trust my memory before
sending something out. But it's hard to get used to being senile :-)
I guess that also explains why I never pursued it...
Steve
-Original
is never prime, it has factors k and v (unless k=1,
of course), and 2^(kv)-1 always has factors 2^k-1 and 2^v-1. I don't know if
you meant something else or if I just misunderstood you. Sorry if that's the
case.
Regards,
Steve Harris
-Original Message-
From: Jeroen [EMAIL PROTECTED
original message that
it should only take about 10-12 days for the Primenet server to hand out all
the assignments in that range (15.16M to 15.30M).
Regards,
Steve Harris
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it
reaches 15.30M. I know there are other ways around it, but that is the
simplest.
Steve Harris
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option.
It's still a good idea to back up the savefile to some other medium every so
often in case you lose your whole hard drive.
Regards,
Steve Harris
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That's my only point. Rude, yes. Morally/ethically/legally
there's really no problem with doing it.
legally, who knows - maybe there will be a court case some day
if some awful person poaches the 10M exponent ...
but morally/ethically there is obviously a huge problem with
Aaron,
i really know nothing about your past except what i've read here.
it's your current comments re poaching which i have found
objectionable. as you can see, i do feel free to comment regardless
of your possible lack of appreciation for my comments. if you repented
apologized for your
That's my only point. Rude, yes. Morally/ethically/legally
there's really no problem with doing it.
legally, who knows - maybe there will be a court case some day
if some awful person poaches the 10M exponent ...
but morally/ethically there is obviously a huge problem with
Aaron,
i really know nothing about your past except what i've read here.
it's your current comments re poaching which i have found
objectionable. as you can see, i do feel free to comment regardless
of your possible lack of appreciation for my comments. if you repented
apologized for your
(apologies for any duplicate postings i generated here; most
mailservers reject mail from my semi-improperly-configured linux PC.)
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Mersenne Prime FAQ
hi Aaron,
thanks for clarifying your position! i'm a simpleton who lives often
below curb-height, and think poaching=stealing=wrong. this exponent
poaching seems like a sort of stealing to me and it would surely tick
me off vastly if i found my 33M exponent was checked in a day before
my PC
hi,
does anyone know why i see a ~25% iteration time increase by moving
from mprime v21a to mprime v21b. (i'm considering moving back to v21a
since it appears to run faster on my 900 Mhz redhat linux.)
regarding the fried P4 machines, the saga continues. despite repeated
requests for full
thanks Brian everyone who has responded
i do also have a 900 Mhz Athlon machine too - running redhat linux.
i now have my win98 1.8Ghz PC back, supposedly in working order,
supposedly the problem was some other s/w i had installed. :| i had
installed very little on it beyond prime95. so
hi,
well, i fried a second P4 using GIMPS. first a 2Ghz P4, and now a
1.8Ghz . obviously the vendor has sold me a crappy machine with
inadequate cooling/motherboard/something and i am now done with them
and they will be giving me a full refund whether they like it or not.
so now i am
thanks to Alex Kruppa for suggesting a better modification to the
beginning of a GIMPS theme song: GCD, FFT, PRIME! (say each
letter separately, singing to mickey mouse theme song tune.)
Mary, thanks for pointing out that prime95 counts cycles rather than
wall time, so that it will not be
here are some instances where i have damaged computers
by (capriciously?) running prime95!
1 - i just got my wife's toshiba laptop back from toshiba warranty
service. running prime95 for ~6 months on it caused the fan to die,
and then the laptop would overheat shutdown even without prime95
Thing :-)
Steve Harris
-Original Message-
From: Steve Elias [EMAIL PROTECTED]
Date: Monday, January 14, 2002 1:58 PM
Subject: Mersenne: slaying cpus with prime95
here are some instances where i have damaged computers
by (capriciously?) running prime95!
1 - i just got my wife's toshiba
the warranty expires, rather than
after. This feature is certainly not a Bad Thing :-)
Steve Harris
indeed, prime95 is a great DVT tester, or at least a DT tester.
(dvt=deviate-voltage-and-temperature, or something close to that.)
[EMAIL PROTECTED] Subject: RE: Mersenne: slaying
' couldn't stop it. I had to reboot the PC, then it connected and reported
in just fine immediately afterwards.
Irv, I know this is no help, except to let you know you aren't
the only one...
Steve Harris
-Original Message-From:
[EMAIL PROTECTED] [EMAIL PROTECTED]Date: Friday
On Sat, Jan 05, 2002 at 07:00:21PM +, Steve wrote:
Hi Group
I've noticed that now we've got over 30,000 users listed in
the top producers table.
Welcome to all you new people (about 400) who've joined since
the discovery of #M39.
Missed a zero, meant 4000 nwe people.
--
Cheers
Hi Group
I've noticed that now we've got over 30,000 users listed in
the top producers table.
Welcome to all you new people (about 400) who've joined since
the discovery of #M39.
Happy hunting everyone.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error
that the large gaps tend to be
adjacent to the small gaps, which is to be expected if the overall distribution
is to remain around the average of 1.45 - but this cannot be counted
on.
Alex Kruppa wrote:
next on schedule, if Steve can make it
in March, is eineMa, Starkbier and
Nockherberg! :)
I am already
in the near future, we plan to
make this an annual event - or semiannual, or quarterly, or however often we
can get together. We did decide that making it a daily event was totally out
of the question :-)
Happy holidays,
Steve ( Alex
of the
residues is incorrect, and happens (relatively) often, I believe about two
percent of the time. However, as has been pointed out before, the odds of
two LL tests on different machines returning the _same_ incorrect residues
are astronomical (although, of course, still non-zero).
Steve
George did say that, and I was aware of his statement, but that still has no
effect on the point I was making.
George's GIMPS stats also give no credit at all for finding factors, but
that doesn't mean he considers finding factors worthless.
Steve
-Original Message-
From: Gerry Snyder
)
behind GIMPS. The only reason we do any factoring at all is to reduce the
time spent on LL testing.
Besides, if you do manage to find a 75-digit factor of a 2-million-digit
Mersenne number, that still leaves a 125-digit remainder. Really not
much help :-)
Regards,
Steve Harris
-Original
page at:
http://www.zeropps.uklinux.net/linstuff.html
Be sure to read the documentation in the .txt file. The
script should run on most platforms, I know it works on
Unix, Linux, NT4, and Win2000.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee
peak; I recall there being over 21000 accounts at one time.
WRT team '.', I recall a few months ago it seemed to be holding up some
double-checks at the low end of the assignments, but it did eventually
complete them all.
Steve Harris
-Original Message-
From: Henk Stokhorst [EMAIL
thought. Isn't mersenne.org physically located on
Entropia's servers? I still have been unable to get to mersenne.org at all,
but was able to get to Entropia's home page (although it took several
minutes to partially download before I gave up waiting).
Regards,
Steve Harris
checked on it and it had found a factor and was sitting there with nothing
to do! Now I always make sure a new setup has at least two eponents queued
up. Even a machine with a permanent connection will be unable to request new
work if the server is down.
Steve Harris
-Original Message-
From
Yes the article does go into great detail re Beowulf clusters, but the
penultimate paragraph contains:
An equally important trend is the development of networks of PCs that
contribute their processing power to a collective task. An example is
SETI@home, ...
As usual, we get ignored while SETI
lottery tickets.
And if I do happen to find a mersenne prime, the article will appear in
places like Scientific American, not the National Enquirer... ;~)
Steve
-Original Message-
From: Nathan Russell [EMAIL PROTECTED]
Date: Sunday, July 22, 2001 12:06 PM
I think the reason SETI
, section, there
is documentation and a sample report bundled with the
script.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.zeropps.uklinux.net/
or http://start.at/zero-pps
3:04am up 7 days, 5:05, 2 users
I've noticed that as well... haven't been able to get to the website, but
Prime95 has no trouble reporting in or getting exponents.
Steve
-Original Message-
From: Rick Pali [EMAIL PROTECTED]
From: Steinar H. Gunderson
Both WWW and FTP down from here. :-(
Prime95 has no trouble, so
in any day now.
(And don't forget... one could have been found recently that hasn't been
published yet!)
Steve Harris
-Original Message-
From: Brian J. Beesley [EMAIL PROTECTED]
Date: Thursday, May 17, 2001 4:35 PM
snip
Maybe M39(?) is not massively overdue, but I think it is at least
about
in the middle.
I'm not a mathamatician by any stretch of the imagination, but I think it's
an interesting theory.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.zeropps.uklinux.net/
or http://start.at/zero-pps
2:07pm up
could explain how to derive the group order, or point
me in the right direction, I'd be very grateful.
Regards,
Steve
If the sigma is the same, then a curve with B1=25 will find any
factor that a curve with B1=5 finds.
When you run 700 random curves at B1=25, you might theoretically
had forgotten all about it until I read Jeramy's message. It has never
happened on any of my other PCs. Oddly enough, I have noticed on Athlons
that the iterations run about 2% faster when the modem is connected!
Steve Harris
-Original Message-
From: Jeramy Ross
Date: Tuesday, May 15, 2001
get 24
lines of error message when we have a problem with topproducers.shtml
rather than 2 Megs worth.
It's here: http://www.zeropps.uklinux.net/linstuff.html
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http
machine will not be very happy!
Steve Harris
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it otherwise,
I would love to hear them.
Steve Harris
Note: If you have power saving on your monitor, once your monitor turns
off,
any running screen saver is supposed to stop running. Whether that's the
case or not for many screen savers, I have no idea.
Besides the blank screen, another good, low
as one. This is
all just my own guess, so don't take my word for it.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.zeropps.uklinux.net/
or http://start.at/zero-pps
6:07pm up 69 days, 18:51, 2 users, load average
Oops, I meant mod M(-1) which is M-1...
Steve
I don't believe that can ever happen, but if it did then the next
step would just use mod(-1) which is p-1. The mod function
never returns a negative number.
Steve Harris
-Original Message-
From: Spike Jones [EMAIL PROTECTED]
To: [EMAIL
it to run faster? And how much
memory would ECM 'like' to use if it was available?
Regards,
Steve
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or
mersenne. Every time I connect to the net (probably five to six times per
day), my machine synchronises its self with a time server in Manchester,
North West England. So I know that my machine isn't wrong.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough
to do with machine speeds.
This change would have no effect on those of us who have been regularly
completing our work and reporting it in, regardless of whether or not we
have slow machines.
Regards,
Steve Harris
,
hence returning them sooner.
Steve Harris
-Original Message-
From: Brian J. Beesley [EMAIL PROTECTED]
To: Steve [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Sunday, March 11, 2001 2:44 PM
Subject: Re: Mersenne: prime95 - v21 progress
On 11 Mar 2001, at 7:55, Steve wrote
to the group, it's just a case of reading/writing that
digit into a header line.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.zeropps.uklinux.net/
or http://start.at/zero-pps
3:10pm up 36 days, 16:51, 2 users
people would pay attention to it.
I think that the intention is for it to be server side and included in
the X-Headers eg:
From: Steve [EMAIL PROTECTED]
X-Mersenne-Count for 2001 is message 229
The first line in the example is one that my machine puts in the header
of the message, and the second
of51.04 CPU hours per day
they are approximately 1.37 years in front of you.
You should be in the middle of the pack that you are
chasing in something like 763.26 days.
Any comments or suggestetions for improvements or error
reports are welcome.
--
Cheers
Steve email mailto
My apologies and thanks to Andy for pointing out that one of the files
was corrupted in the tarfile.
I've fixed it now.
--
Cheers
Steve email mailto:[EMAIL PROTECTED]
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.zeropps.uklinux.net/
or http://start.at/zero
o I'm anal-retentive about optimization. Sorry :-)
Steve
-Original Message-
From: Levi Broderick [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Tuesday, February 06, 2001 3:45 PM
Subject: Re: Mersenne: [screen saver]
There's a rather good freeware screen saver written by
erate item to be downloaded from the same
site.
Steve Harris
-Original Message-
From: Russel Brooks [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Monday, February 05, 2001 5:19 PM
Subject: Mersenne: Re: idea for a new prime95 version
Joshua Zelinsky wrote:
directory
I believe the least successful were some screensavers
which did not come with windows but were downloaded from elsewhere; but I am
also sure there were some that came with the OS that were just as bad.
Steve Harris
_
Unsubsc
screensavers available now that one can be found to match
any personality, and I have found it impossible to get people to let go of
one they really like. So I don't believe Brian's idea will do very much
good; but then every little b
minutes,
so I stopped mprime and started it again hoping that it would
send the results, but it just got more work to do (I have moved
house and didn't have net access for 3 weeks so ran out of work).
Any suggestions or help greatly received.
--
Cheers
Steve email mailto:[EMAIL
I've found 2 factors so far during P-1 testing and received 0.001 years
(about 8 or 9 hours) credit for each. Not much consolation as it 'cost'
upwards of 100 P90 hours each to find them, but it beats getting no credit
for spending the same amount of time not finding any.
Steve "binaryd
That thing will do about 10^32 P90cpu-years per
SECOND (ball-park estimate). Certainly could be useful!
Steve 'binarydigits' Harris
[EMAIL PROTECTED]
-Original Message-From:
xqrpa [EMAIL PROTECTED]To: [EMAIL PROTECTED] [EMAIL PROTECTED]Date:
Friday, September 01, 2000 12:56
It was the first
Intel CPU EVER to have an IComp2.0 rating LOWER than its clock speed and I
read several web reviews comparing it to a lowly 200 P55C.
If anyone would like us to build a GIMPS cruncher, let me know.
Steve Gardner
[EMAIL PROTECTED]
www.pcavenue.com
1) Does anyone know the preformance
' with the shortest time period at the
top.
Can the cgi for this be done easily? Otherwise I guess I found another use
for Excel.
Thanks
Steve Gardner
Test Point Inc
[EMAIL PROTECTED]
Browse 83000 Computer Products At
www.pcavenue.com
if it's worth it.
Thanks guys (and gals?).
Steve Gardner
Test Point Inc
[EMAIL PROTECTED]
Browse 83000 Computer Products At
www.pcavenue.com
Participant In The Great Internet
Mersenne Prime Number Search
at www.mersenne.org
probably have more questions
Steve Gardner
[EMAIL PROTECTED]
Check out 84000 computer products at
www.pcavenue.com
Try http://www.utm.edu/research/primes/notes/conjectures/ for a list of
interesting conjectures including this one.
Steve Gardner
[EMAIL PROTECTED]
Check out 84000 computer products at
www.pcavenue.com
-Original Message-
From: Aaron Cannon [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL
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