Mersenne Digest Thursday, August 24 2000 Volume 01 : Number 771 ---------------------------------------------------------------------- Date: Tue, 22 Aug 2000 01:15:58 +0000 (GMT) From: Russel Brooks <[EMAIL PROTECTED]> Subject: Re: Mersenne: weird behaviour Prime 95 Mark A. Hanning-Lee wrote: > whenever I restart Windows95 Prime 95 runs fine for a couple of hours > and than slows down enormously > > Have a look at your hard disk light! If it's on all the time, it's > swapping. Maybe Prime95 happens to take more memory under Win95? > > Or other processes are driving up memory usage, and they take a while to > start up. No drive activity. 256Meg and everything stopped I know how to find. 450MHz Aptiva. I switched from LL to factoring to get around slow down but that didn't help (although the screen interference did stop). Daily Win98 restarts keeps the slow down from getting too excesive. Russ :-( _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Mon, 21 Aug 2000 19:22:38 -0700 From: "xqrpa" <[EMAIL PROTECTED]> Subject: Mersenne: W95/98 Prime95 Slowdown: Analysis Tools -- Resent Because Of Possible Internal Errors This is a multi-part message in MIME format. - ------=_NextPart_000_000D_01C00BA5.2B2DB8E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Apologies if this is redundant -- I never saw it go through to "base." Regarding creeping slowdown of Prime95: Here is a strategy: first use a "process display" program like Process Viewer 200" to look at the processes running along with Prime95. CTRL-ALT-DEL will show some, but not all of them, and there are some parasitic processes which seem not to show up at all. PV2000 can be used to delete or change = priority of most concurrent tasks, tuning the machine in question to give Prime95 = MaxHeadroom including "real time" priority, squeezing out all but vital = system functions. I had to resort to the latter to get a Compaq Presario7998 to turn in top performance. PV2000 is free, and can be found with an avalanche of other utilities = at: http://winfiles.cnet.com/apps/98/system-analyze.html about 35 programs from the page top. I'd be very curious to know if = this solves the problem, and I can give you a list of the 8 processes I've = found that make up the essentials. Other utilities such as MemTurbo (not free) can be used to automatically scavenge memory when MemAvail drops below a preset limit, forcing grabage collection. Feel free to contact me about this, Best Wishes, Stefanovic - ----- Original Message ----- From: Russel Brooks <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, August 17, 2000 6:13 PM Subject: Re: Mersenne: weird behaviour Prime 95 > Henk Stokhorst wrote: > > whenever I restart Windows95 Prime 95 runs fine for a couple of = hours > > and than slows down enormously. The machine is usually > > My friend's Win98 machine does the same thing. She went on vacation = for > a week and when she returned a factoring iteration that use to take > about 13 seconds now took over 170. After restarting the fast > performance returned (for a while). The machine is an IBM Aptiva with > - ------=_NextPart_000_000D_01C00BA5.2B2DB8E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT size=3D2>Apologies if this is redundant -- I never saw it go = through to=20 "base."</FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3></FONT></FONT> </DIV> <DIV>Regarding creeping slowdown of Prime95:</DIV> <DIV> </DIV> <DIV><FONT size=3D2><FONT size=3D3>Here is a strategy: first use a = "process=20 display" program like Process<BR>Viewer 200" to look at the = processes=20 running along with Prime95.<BR>CTRL-ALT-DEL will show some, but not all = of them,=20 and there</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3>are some parasitic processes=20 which</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3>seem not to show up at all. = PV2000 can be=20 used to delete or change priority<BR>of most concurrent tasks, tuning = the=20 machine in question to give Prime95 </FONT></FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3>MaxHeadroom including "real time" = priority,=20 squeezing out all but vital system</FONT></FONT><FONT size=3D2><FONT=20 size=3D3><BR>functions.</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3><BR>I had to resort to the latter to = get a Compaq=20 Presario7998 to turn in</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3>top performance.<BR><BR>PV2000 is = free, and can=20 be found with an avalanche of other utilities at:<BR><BR><A=20 href=3D"http://winfiles.cnet.com/apps/98/system-analyze.html">http://winf= iles.cnet.com/apps/98/system-analyze.html</A><BR><BR>about=20 35 programs from the page top. I'd be very curious to know if=20 this<BR>solves the problem, and I can give you a list of the 8 processes = I've=20 found<BR>that make up the essentials.<BR><BR>Other utilities such as = MemTurbo=20 (not free) can be used to automatically<BR>scavenge memory when MemAvail = drops=20 below a preset limit, forcing</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT size=3D3>grabage collection.<BR><BR><BR>Feel = free to=20 contact me about this,<BR><BR>Best Wishes,<BR>Stefanovic<BR><BR>----- = Original=20 Message -----<BR>From: Russel Brooks <<A=20 href=3D"mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</A>><BR>To: = <<A=20 href=3D"mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</A>><BR>Sent: = Thursday,=20 August 17, 2000 6:13 PM<BR>Subject: Re: Mersenne: weird behaviour Prime=20 95<BR><BR><BR>> Henk Stokhorst wrote:<BR>> > whenever I restart = Windows95 Prime 95 runs fine for a couple of hours<BR>> > and than = slows=20 down enormously. The machine is usually<BR>><BR>> My friend's = Win98=20 machine does the same thing. She went on vacation for<BR>> a = week and=20 when she returned a factoring iteration that use to take<BR>> about = 13=20 seconds now took over 170. After restarting the fast<BR>> = performance=20 returned (for a while). The machine is an IBM Aptiva=20 with<BR>><BR></DIV></FONT></FONT></BODY></HTML> - ------=_NextPart_000_000D_01C00BA5.2B2DB8E0-- _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Mon, 21 Aug 2000 19:27:40 -0700 From: "Terry S. Arnold" <[EMAIL PROTECTED]> Subject: Mersenne: Athlon Prime95 How do the AMD processors stack up for Prim95 use. In particular the Athlon. Terry Terry S. Arnold 2975 B Street San Diego, CA 92102 USA [EMAIL PROTECTED] (619) 235-8181 (voice) (619) 235-0016 (fax) _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Tue, 22 Aug 2000 21:03:54 +0100 From: gordon spence <[EMAIL PROTECTED]> Subject: Mersenne: Re: Top Producers I went to check my account just on the entropia web-sites individual accounts report page. The default userid is challenge, I just hit enter without thinking and this is the report >Account ID LL P90* Exponents Fact.P90 Exponents P90 CPU > CPU yrs LL Tested CPU yrs* w/ Factor hrs/day >-------------- ------- --------- -------- --------- ------- >challenge 745.440 7630 125.040 3848 6194.48 > >Team leader : Entropia.com, Inc. team account >Contact e-mail : [EMAIL PROTECTED] >Receive e-mail : NO >Last activity : 16 Aug 2000 19:33 UTC >Account created: 09 Apr 1997 11:00 UTC > > > > ------- Machines Assigned to PrimeNet ------- > >Intel Pentium III : 1 >Intel Pentium Pro : 1 >---------------------- ------- >TOTAL, uniquely named : 2 > > > > ------- Exponents Assigned ------- > >Assignment overdue check-in is set at 60.0 days (0.0 days to expire) > > prime fact current days >exponent bits iteration run / to go / exp date updated date >assigned computer ID Mhz Ver >-------- -- ---- >--------- ----------------- --------------- --------------- >------------ ---- --- > 9354173 64 2165807 127.3 -31.6 28.4 04-Jul-00 04:54 17-Apr-00 > 13:34 C08BFB643 500 v19/v20 > 9969943 64 2842932 146.7 117.0 82.0 16-Aug-00 19:33 29-Mar-00 > 03:54 Idaho 448 v18 > >Lucas-Lehmer testing : 2 >Factoring only : 0 >Double-checking LL : 0 >---------------------- ------- > TOTAL : 2 > Can somebody, anybody, please explain how 1 cpu @ 500 and 1 @448 can possibly equal 6194 hours per day!!!! I currently have 6 x p3-733, 3 x p3-600, 2 xp3-550, 1 x p3-500, 2 x celeron-500, 1 x p2-400, 3 x celeron-366, 1 x p2-300 and 2 x p150 for I reckon about equivalent of 2700 hours per day. With maths like this no wonder I only rank 150...... Just wondering. Gordon _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Tue, 22 Aug 2000 15:01:43 -0700 From: Eric Hahn <[EMAIL PROTECTED]> Subject: Re: Mersenne: Re: Top Producers Gordon Spence wrote: >I went to check my account just on the entropia web-sites >individual accounts report page. The default userid is challenge, >I just hit enter without thinking and this is the report >[...SNIP...] >Can somebody, anybody, please explain how 1 cpu @ 500 and 1 @448 can >possibly equal 6194 hours per day!!!! Likely from the fact that around the first of February, all of the old, defunct ("dead") accounts without activity for a year or so were merged into the 'Challenge' account. A message was posted on the list regarding the action from Scott), with the "Hopefully nobody will mind" message. There were no protests as far as I recall... In fact, here's the message (which I just found!): ==================== Reply-To: <[EMAIL PROTECTED]> From: "Scott Kurowski" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Mersenne: PrimeNet Top Producers List Date: Tue, 8 Feb 2000 23:40:57 -0800 Hi all, Following the database synchro we performed on PrimeNet yesterday, we cleaned up some of the 'dead' user accounts over a year old. The cumulative machine times were added to the Entropia.com, Inc. 'challenge' account, the first one opened on PrimeNet in April 1997. Hopefully nobody will mind our reclaiming the fragmented time. :-) regards, scott [EMAIL PROTECTED] ==================== _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Tue, 22 Aug 2000 15:18:55 -0700 From: Eric Hahn <[EMAIL PROTECTED]> Subject: Re: Mersenne: Re: Top Producers Just an additional note to my last message... Here's what I found from a couple of top producers reports around the time: Top Producers Report 22 Jan 2000 05:01 (Jan 21 2000 9:01PM Pacific) 86. challenge 36.031 469 1.579 106 323.64 Top Producers Report 19 Feb 2000 02:01 (Feb 18 2000 6:01PM Pacific) 1. challenge 744.48 7626 125.040 3848 7282.07 And currently: Top Producers Report 22 Aug 2000 22:01 (Aug 22 2000 3:01PM Pacific) 3. challenge 745.440 7630 125.040 3848 6189.45 Notice how much the CPU hrs/day has fallen since... Eric _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Tue, 22 Aug 2000 19:15:35 -0700 From: "xqrpa" <[EMAIL PROTECTED]> Subject: Re: Mersenne: Re: Top Producers - ----- Original Message ----- From: Eric Hahn <[EMAIL PROTECTED]> To: gordon spence <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Tuesday, August 22, 2000 3:01 PM Subject: Re: Mersenne: Re: Top Producers > Gordon Spence wrote: > >I went to check my account just on the entropia web-sites > >individual accounts report page. The default userid is challenge, > >I just hit enter without thinking and this is the report > > >[...SNIP...] > > >Can somebody, anybody, please explain how 1 cpu @ 500 and 1 @448 can > >possibly equal 6194 hours per day!!!! > Other factors influence the "hours per day" report, too: 1. Forming a group with a few slow machines, then adding a slew of faster ones bit by bit, causes an underestimate to be reported, but one which gradually increases as the new machines report in. 2. How Ms are picked for processing *seems* to influence the numbers, too: PrimeNet can assign exponents automatucally, according to a (to me) rather mysterious protocol, or numbers can be gotten using Manual Testing Forms. Best Wishes, Stefanovic _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Wed, 23 Aug 2000 15:26:45 +0200 From: "Sylvain PEREZ" <[EMAIL PROTECTED]> Subject: Mersenne: You Are Not credited! (Do stupid questions fill enough the august desert?) Hello from Paris again ... I get this on my stats, having 3 PCs ethernet connected, but only one on have a modem dial-up network. I do use for 2 years "FolderLan" (TM) which consists of copying the full Prime folder of a satellite machine on my main machine when I want to update Prime server results and/or get exponents. Works well, hum, worked well ? Account ID LL P90* Exponents Fact.P90 Exponents P90 CPU CPU yrs LL Tested CPU yrs* w/ Factor hrs/day - -------------- ------- --------- -------- --------- ------- omniware 4.833 17 0.251 5 87.67 On the other side, this number of exponents (17) tested is very less than the reality. I also have on the result page (knowing fr1 is the main machine, fr2 and 3 the others) : ------- Exponents Cleared since last Synchronization ------- prime fact Lucas-Lehmer residue or factor exponent bits [residues partially masked] date returned computer ID - -------- ---- -- -------------------------------- --------------- -------- - ---- 8301677 64 0xA1C69733110097__ 26-Mar-00 11:14 fr3 8454581 63 0x6D34907352994B__ 26-Mar-00 11:18 fr2 8665369 64 0xAF28BC5C43E739__ 11-Jun-00 02:19 fr2 8896183 64 0x33494C2E4B329D__ 26-Mar-00 11:18 fr2 8896211 64 0x80A0276B6B1C4B__ 26-Mar-00 11:18 fr2 9189647 64 0x4F98CEA83252F3__ 26-Mar-00 11:14 fr3 9191071 64 0xD136A22D13B3C0__ 26-Mar-00 11:14 fr3 9191089 64 0x2B9FEC9B2457DC__ 17-Jun-00 00:07 fr3 9218023 64 0x9CB67A94006A5D__ 17-Jun-00 00:07 fr3 9244217 64 0x6F36A7A5C3B5F4__ 15-Feb-00 18:42 fr1 9264271 64 0xBD683CA6D63561__ 11-Jun-00 02:19 fr2 9508123 64 0x89A598937F7ACB__ 24-Mar-00 19:15 fr1 9839201 64 0xDBD8BEE3FB55D7__ 13-May-00 10:15 fr1 9851099 64 0x695CF4D2816AB3__ 08-Aug-00 10:26 fr1 10175273 64 0x22545B731446AF__ 27-Jun-00 00:41 fr1 Factored composite : 0 Lucas-Lehmer composite: 15 Double-checked LL : 0 - ---------------------- ------- TOTAL : 15 Is this number normal (15) ? Shouln't it be added to the 17 ? It's for months like that. Then I read the FAQ and was surprised to see that FolderLan (R) (C) seems not to make the LL credited anymore, or did I misread ? I'm not running after points or results, but I don't understand how PrimeNet could make their last server version working like that : It seems to me it worked before (a few months ago). I have 3 more machines ready for Prime, and they won't be connected to the net. Should I manually enter results to the server ? Just forget it, don't have time ! Forget Prime ? Huh. And building a little proxy, should I on a Win 2K Pro ? Going to get DSL in a few days (the cheap version - expensive here -, not shared between the computers, only one), I'm not sure I will be able to set this up. Anyway, 3 machines will still have no connection at all. So distributed means connected ? As I can understand technical reasons (like a UID per machine, etc), I can see many computers and people that will not be happy of this. I may have completely missed something, so please insult me if needed, Masters. ;) Sylvain Perez _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Wed, 23 Aug 2000 09:33:09 -0700 From: Greg Hewgill <[EMAIL PROTECTED]> Subject: Mersenne: Primenet status report I noticed a while ago that the Primenet server started reporting "v19/v20" in the "Ver" column. When this showed only one version, it was useful to help determine which machines needed to be upgraded. Now it makes it impossible to distinguish between v19 and v20, which I'd like to do to make sure all my machines can do P-1 factoring. Why wasn't the individual version number preserved? Can this be changed in future versions of Prime95 and/or the Primenet server? Greg Hewgill _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ Date: Thu, 24 Aug 2000 09:22:59 +0200 From: "Hoogendoorn, Sander" <[EMAIL PROTECTED]> Subject: RE: Mersenne: Primenet status report >I noticed a while ago that the Primenet server started reporting "v19/v20" in >the "Ver" column. When this showed only one version, it was useful to help >determine which machines needed to be upgraded. Now it makes it impossible to >distinguish between v19 and v20, which I'd like to do to make sure all my >machines can do P-1 factoring. >Why wasn't the individual version number preserved? Can this be changed in >future versions of Prime95 and/or the Primenet server? It would also be useful to see the minor version number in the status report. _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.exu.ilstu.edu/mersenne/faq-mers.txt ------------------------------ End of Mersenne Digest V1 #771 ******************************
