Mersenne Digest Saturday, July 1 2000 Volume 01 : Number 753 ---------------------------------------------------------------------- Date: Wed, 28 Jun 2000 18:52:23 -0700 From: Eric Hahn <[EMAIL PROTECTED]> Subject: Re: Mersenne: Synchronization Stefan Struiker wrote: >Hi All: > >What is a "synchronization" and where can I find out more >about it? A database synchronization is when George takes the data in his database and the data in PrimeNet's database and "causes" them to be "similar". Imagine it akin to making sure the data on both your desktop and laptop are the same, so when you're working on the data on the laptop, which you've "synced" with the desktop (which you usually work on the data on), you've got the right (and up-to-date) data to work on... I must agree tho, I think a database synchronization would be useful. The cleared exponent report is about 1MB greater than the assigned exponent report, and I've *never* seen it be larger... George?!? Do you have some free time to do a sync?!? _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 29 Jun 2000 00:59:55 -0700 From: "Jim Howell" <[EMAIL PROTECTED]> Subject: Mersenne: Illegal Sumouts This is a multi-part message in MIME format. - ------=_NextPart_000_0019_01BFE165.56F35F80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I had a similar problem that started when I upgraded from my old = (Netcom) "NetComplete" software to the Mindspring software, except that = the Illegal Sumout occurred (nearly) 100% of the time. I use the same = work-around you do, namely to stop Prime95 before starting the = Mindspring software. On my system, I sometimes get a small white box, = about 1/8-inch square, at the upper left corner of my screen at about = the same time as the Sumout. When I position the mouse over the Connect = button and leave it there for a few seconds, an explanatory "box" = appears near the mouse pointer. When the box disappears, the white box = in the corner of my screen appears. I don't remember now whether the = Illegal sumout occurs at this same time, or if it occurs during dial-up. = Perhaps the problem is with the Mindspring software? - -------------- Original message follows ---------------- Date: Mon, 26 Jun 2000 19:49:30 -0400 From: "Allan G. Schrum/Theresa C. Schrum" <[EMAIL PROTECTED]> Subject: Mersenne: Modem Dun causing Illegal Sumouts? Hi Folks, I recently upgraded my Win98 HP PIII 533 machine to use Microsoft's DUN with the 128 bit encryption (the latest available from Microsoft). Now, fairly reliably, whenever I start the modem to make a connection to my ISP, I get an Illegal Sumout error on prime95. If I stop prime95, start my modem, then continue, everything works fine. But 1 out of 3 times, if I let prime95 run while starting my modem, I get the sumout error. Has anyone else had this problem? Anyone have any links with Microsoft to research/report this problem? Thanks, - - -Allan - ------=_NextPart_000_0019_01BFE165.56F35F80 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 5.00.2314.1000" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>I had a similar problem that started = when I=20 upgraded from my old (Netcom) "NetComplete" software to the Mindspring = software,=20 except that the Illegal Sumout occurred (nearly) 100% of the time. = I use=20 the same work-around you do, namely to stop Prime95 before starting the=20 Mindspring software. On my system, I sometimes get a small white = box,=20 about 1/8-inch square, at the upper left corner of my screen at about = the same=20 time as the Sumout. When I position the mouse over the Connect = button and=20 leave it there for a few seconds, an explanatory "box" appears near the = mouse=20 pointer. When the box disappears, the white box in the corner of = my screen=20 appears. I don't remember now whether the Illegal sumout occurs at = this=20 same time, or if it occurs during dial-up. Perhaps the problem is = with the=20 Mindspring software?</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>-------------- Original message follows = - ----------------</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Date: Mon, 26 Jun 2000 19:49:30 = - -0400<BR>From:=20 "Allan G. Schrum/Theresa C. Schrum" <<A=20 href=3D"mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]</A>><B= R>Subject:=20 Mersenne: Modem Dun causing Illegal Sumouts?<BR><BR>Hi Folks,<BR><BR>I = recently=20 upgraded my Win98 HP PIII 533 machine to use<BR>Microsoft's DUN with the = 128 bit=20 encryption (the latest<BR>available from Microsoft). Now, fairly = reliably,=20 whenever I<BR>start the modem to make a connection to my ISP, I get=20 an<BR>Illegal Sumout error on prime95. If I stop prime95, start = my<BR>modem,=20 then continue, everything works fine. But 1 out of 3<BR>times, if I let = prime95=20 run while starting my modem, I get<BR>the sumout error.<BR><BR>Has = anyone else=20 had this problem? Anyone have any links with<BR>Microsoft to = research/report=20 this problem?<BR><BR>Thanks,<BR><BR>- = - -Allan<BR></DIV></FONT></BODY></HTML> - ------=_NextPart_000_0019_01BFE165.56F35F80-- _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 29 Jun 2000 18:40:51 +0200 From: Henk Stokhorst <[EMAIL PROTECTED]> Subject: Mersenne: new supercomputer >NEW YORK (Reuters) - International Business Machines Corp >on Thursday unveiled the fastest computer in the world, which the >U.S. government will use to simulate nuclear weapons tests. The >ASCI White computing capacity as tested by IBM has a >capacity of 12.3 teraflops. Anyone around with some experience in hacking? YotN, Henk Stokhorst _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 29 Jun 2000 10:33:46 -0700 From: Stefan Struiker <[EMAIL PROTECTED]> Subject: Re: Mersenne: new supercomputer Good link on that monster and to the AMD KLAT2 cluster (how I wish my room looked and worked) can be found at: http://news.cnet.com/news/0-1003-200-2167700.html?tag=st.ne.1002.bgif.ni Adding 297,000 more machines to the project would be an alternative... Purple With Nefarious Purpose, Stefanovic Henk Stokhorst wrote: > >NEW YORK (Reuters) - International Business Machines Corp > >on Thursday unveiled the fastest computer in the world, which the > >U.S. government will use to simulate nuclear weapons tests. The > >ASCI White computing capacity as tested by IBM has a > >capacity of 12.3 teraflops. > > Anyone around with some experience in hacking? > > YotN, > > Henk Stokhorst > > _________________________________________________________________ > Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm > Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 29 Jun 2000 22:18:05 +0100 From: "Michael Bell" <[EMAIL PROTECTED]> Subject: Mersenne: Motherboard Temperature Hi, Soory to be a little off topic, can somebody tell me how hot a motherboard should be running? I have a Celeron 466 and an ASUS P2B-B. It claims to be 42 degrees after some days of continuous use. Is this normal? Thanks, Michael. _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 29 Jun 2000 17:28:51 -0700 From: Stefan Struiker <[EMAIL PROTECTED]> Subject: Mersenne: GIMPS And EFF Zdrasti!: Anyone current on the relationship between GIMPS and the Electronic Frontier Foundation? I just received a request for membership renewal. Thanks And Best Wishes, Stefanovic _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 29 Jun 2000 18:02:12 -0700 From: Stefan Struiker <[EMAIL PROTECTED]> Subject: Re: Mersenne: Motherboard Temperature That must be 42 degrees Celsius..could you explain where the temp is being read? Michael Bell wrote: > Hi, > > Soory to be a little off topic, can somebody tell me how hot a motherboard > should be running? I have a Celeron 466 and an ASUS P2B-B. It claims to be > 42 degrees after some days of continuous use. Is this normal? > > Thanks, > > Michael. > > _________________________________________________________________ > Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm > Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 30 Jun 2000 10:04:35 +0200 From: "Steinar H. Gunderson" <[EMAIL PROTECTED]> Subject: Re: Mersenne: Motherboard Temperature At 22:18 29.06.00 +0100, Michael Bell wrote: >Soory to be a little off topic, can somebody tell me how hot a motherboard >should be running? I have a Celeron 466 and an ASUS P2B-B. It claims to be >42 degrees after some days of continuous use. Is this normal? I'd say 42 degrees is a little hot. I think I've heard numbers saying that 50 is critical, and at 60, your CPU simply won't work anymore. My own usually runs at 28 or 29, even though the fan isn't especially good. The extreme overclockers get it down to -40 or even -50 :-) As long as it's stable, though, it probably won't harm your CPU, but to be on the safe side, I would have installed some kind of extra cooling. /* Steinar */ _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 30 Jun 2000 06:39:05 -0500 From: [EMAIL PROTECTED] (Mikus Grinbergs) Subject: Re: Mersenne: Motherboard Temperature On Fri, 30 Jun 2000 10:04:35 +0200 "Steinar H. Gunderson" <[EMAIL PROTECTED]> wrote: > At 22:18 29.06.00 +0100, Michael Bell wrote: > >Soory to be a little off topic, can somebody tell me how hot a motherboard > >should be running? I have a Celeron 466 and an ASUS P2B-B. It claims to be > >42 degrees after some days of continuous use. Is this normal? > > I'd say 42 degrees is a little hot. I think I've heard numbers saying that > 50 is critical, and at 60, your CPU simply won't work anymore. My own > usually runs at 28 or 29, even though the fan isn't especially good. The > extreme overclockers get it down to -40 or even -50 :-) In my opinion that is being excessively conservative. I do not know of any CPU that is *rated* at less than 60 degrees, and many Intel CPUs are rated at 70 degrees or higher. (To me, "rated" means the manufacturer claims it will keep working correctly.) In my opinion the main thing you have to worry about is how much hotter the inside of the chip is than what your probe (outside the chip) is measuring. I use a wild-eyed-guess of 5-8 degrees for this difference. In my own experience, I have seen CPUs run for years at above 50 degrees, and have *not* seen any CPUs stop working at even a measured 62 degrees. In fact, I consider your temperature reading of 42 degrees to be *low*. The torture-test mode of 'prime' should soon detect any CPU that misbehaves (for instance, because of heat). If you do not get any errors in 48 hours of running 'prime' (with room temperature as hot as you will ever have it) then my suggestion is to *not* worry about CPU temperature. mikus _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 30 Jun 2000 14:59:34 +0200 From: "Steinar H. Gunderson" <[EMAIL PROTECTED]> Subject: Re: Mersenne: Motherboard Temperature At 06:39 30.06.00 -0500, Mikus Grinbergs wrote: >In my opinion that is being excessively conservative. I stand corrected... :-) /* Steinar */ _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 30 Jun 2000 19:26:34 -0000 From: "Brian J. Beesley" <[EMAIL PROTECTED]> Subject: Re: Mersenne: Motherboard Temperature On 30 Jun 00, at 6:39, Mikus Grinbergs wrote: > In my opinion > the main thing you have to worry about is how much hotter the inside > of the chip is than what your probe (outside the chip) is measuring. Yeah. > I use a wild-eyed-guess of 5-8 degrees for this difference. I suppose this depends critically on where the temp sensor is. With Athlons the temp sensor isn't integrated into the chip package, you have to stuff it between the fins on the heat sink. In these circumstances you may be dropping a lot more than 8 degrees. > > In my own experience, I have seen CPUs run for years at above 50 degrees, > and have *not* seen any CPUs stop working at even a measured 62 degrees. My dual PII systems both use Supermicro boards which have integrated sensors. Typically the M/B sensor runs 4C below the CPU temp, I reckon to keep below 45C for safety. One of the systems had the PSU fan fail, the temps rose to 55C (MB) 59C (CPU) at which point errors started. (So I rewound to a previous "safe" save file when the fan was fixed.) Of course it could be that the errors were due to overheated M/B components, or memory, rather than the CPU. > The torture-test mode of 'prime' should soon detect any CPU that > misbehaves (for instance, because of heat). If you do not get any > errors in 48 hours of running 'prime' (with room temperature as hot > as you will ever have it) then my suggestion is to *not* worry about > CPU temperature. Agreed. Regards Brian Beesley _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 30 Jun 2000 22:28:14 +0200 From: "Hoogendoorn, Sander" <[EMAIL PROTECTED]> Subject: RE: Mersenne: Motherboard Temperature Michael Bell wrote: >Soory to be a little off topic, can somebody tell me how hot a motherboard >should be running? I have a Celeron 466 and an ASUS P2B-B. It claims to be >42 degrees after some days of continuous use. Is this normal? Is this the cpu temp or the mainboard temp? Think 42 for the mainboard is a bit high, maybe your videocard is close to the sensor? My asus P2B with overclocked PII has a cpu temp of 45 and a mainboard temp of 29 degrees The MB temp is always 7 to 8 degrees above room temp and the cpu 15 to 17 degrees above that. Sander _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Sat, 01 Jul 2000 11:43:32 -0700 From: Stefan Struiker <[EMAIL PROTECTED]> Subject: Mersenne: Exponents Already Factored To 64 Bits Bon Weekend, All! I noticed several factoring assignments, in the M13.4 mill range, where factoring was taken to only 64 bits, but not to 65, as would be done on a "fresh" candidate. Are these die-hards from the early daze when machines were wicked slower? Or is there another explanation? Best Wishes, Stefanovic _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ End of Mersenne Digest V1 #753 ******************************
