Mersenne: Fw: Warning: could not send message for past 4 hours

2004-05-05 Thread John R Pierce
I'm trying to send this message to Scott at primenet, and it keeps bouncing, the mersenne.org mail server is refusing my connections (I even tried from work, and got a different but similar error that the server didn' recognize his address and was refusing relay) If anyone knows an alternate

Re: Mersenne: End of list

2004-05-04 Thread John R Pierce
for the continuation of the list, we'll need a new name... I'm suggesting... [EMAIL PROTECTED] is that good for everyone? What are these new names. Is this where majordome(or whatever mailing list manager you will use) will reside? And I want to add my appreciation to Gordon for his long

Re: Mersenne: End of list

2004-04-28 Thread John R Pierce
At 11:30 AM 4/22/2004 -0700, Gordon Irlam wrote: FYI. I intend to end this list shortly. for the continuation of the list, we'll need a new name... I'm suggesting... [EMAIL PROTECTED] is that good for everyone? it may temporarily be [EMAIL PROTECTED] until the DNS can be setup for the

Re: Mersenne: End of list

2004-04-23 Thread John R Pierce
If you are going to archive and publish past postings, please be sure that any email addresses get obfuscated so that they can't be harvested by spammers. I just switched email addresses because I was getting so much spam, and I would hate to have to do it again. the archives are generally set to

Re: Mersenne: p95

2004-01-17 Thread John R Pierce
I want to know if it is possible to distribute LL algorithm so that we can run it on a cluster to test one exopnent on several nodes simultaneously so check it in a shorter peroid of time . Or should we use trial_factoring algorithm in this regard!. or other algorithms.??? not doable. there's

Re: Mersenne: 50% CPU?

2003-11-03 Thread John R Pierce
p4 with 400 or 533Mhz FSB do not support hyperthreading, *EXCEPT* the p4-3.06/533 does. P4 with 800MHz FSB (these are the C versions) do support hyperthreading. P4 Xeons all support HT. I have a question... gotta couple of dual P4/Xeon 2.8 servers, running linux 2.4.20 kernels... using

Re: Mersenne: 50% CPU?

2003-11-03 Thread John R Pierce
The standard way to identify is to have all physical CPU's listed first (0,1 in a dual CPU system) followed by the virtual CPU's (2,3) Hmmm, looks like you are wrong... /proc/cpuinfo shows cpu 0,1 as being one physical id, and cpu 2,3 as being the other.. # cat /proc/cpuinfo

Re: Mersenne: Howdy

2003-08-19 Thread John R Pierce
Just joined the list and wanted to say hey. I am new to the project and find it very interesting. Does anyone know how long it has been running? since at least 1995. _ Unsubscribe list info --

Re: Mersenne: Howdy

2003-08-19 Thread John R Pierce
Just joined the list and wanted to say hey. I am new to the project and find it very interesting. Does anyone know how long it has been running? since at least 1995. my bad, apparently the original prime95 came out in january 1996 this per the FAQ's and stuff on the mersenne.org

Re: Mersenne: Howdy

2003-08-19 Thread John R Pierce
Humour aside, I'm intrigued. Why was your kit taken? it was a long story. short version is, he was a consultant, working at some biga$$ insurance company as a PC Tech. he pre-loaded Prime95 on the desktop install so it was running on a few 100 machines at said company. he thought he had

Re: Mersenne: Speeding Up The Speediest Yet

2003-07-13 Thread John R Pierce
By installing the www.memokit.com memory optimizer and setting the priority of PRIME95 to REALTIME, I brought the .081 spec down to .063 at the very top of the Benchmark list. 1) Assuming your system is otherwise idle, changing the priority should have zero effect. worse, running a 100%

Re: Mersenne: M#40 - what went wrong?

2003-06-13 Thread John R Pierce
On Fri, Jun 13, 2003 at 03:16:24PM -0400, George Woltman wrote: 2) This case results from the way my C compiler treats floating point NaN. NaN stands for not a number. If NaN is converted to an integer, the integer is zero. So if the FFT data is all NaNs, prime95 will report a prime. I

Re: Mersenne: Re: Mersenne archives

2003-06-04 Thread John R Pierce
Does anyone know what happened to the archives? http://www.mail-archive.com/[EMAIL PROTECTED]/ well, http://www.mail-archive.com says... June 2, 2003 Mail-Archive is experiencing technical problems, all archives are temporarily offline and are being actively restored from backup. Because of

Re: Mersenne: mprime and primenet

2003-04-01 Thread John R Pierce
*VERY* odd. I sent and recieved this message yesterday, and today I get another copy... - Original Message - From: John R Pierce [EMAIL PROTECTED] To: Mersenne discussion list [EMAIL PROTECTED] Sent: Monday, March 31, 2003 11:11 PM Subject: Mersenne: mprime and primenet . I note

Mersenne: mprime and primenet

2003-03-31 Thread John R Pierce
I just started running a recent build of mprime on a couple of linux systems, and noted an anomaly vis a vis primenet... When mprime connects to primenet, its not updating date on the rest of the worktodo, only on the exponent actually in progress. case in point... 18665107 67 13.6 7.4

Mersenne: oh great, here we go again!

2003-03-25 Thread John R Pierce
the numerologists are at it again... http://www.nature.com/nsu/030317/030317-13.html or something. _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ --

Re: Mersenne: Zeon vs P4

2003-03-22 Thread John R Pierce
I am mulling over my next machine. I would like to know the performance difference between using dual Zeons vs two boxes both running P4 CPUs. I believe that the Zeon only has a 400 MHz bus while the current P4s have a 533 MHz bus. I would be running XP in either case. the newest xeons have

Re: Mersenne: Primenet sorta down?

2003-03-20 Thread John R Pierce
None of my mprime machines have been able to check in with Primenet for the past 16 hours. Is it me or is there a problem? I just got server unavailable myself, so it must be the server. _ Unsubscribe list info --

Mersenne: p4 xeons...

2003-03-14 Thread John R Pierce
oh boy, maybe I can climb back up the ranks a bit having long since slipped off the first 100... I just brought online a pair of identical Intel servers, each a 2GB dual p4/xeon 2.8Ghz linux 2.4.18 system... running latest non-beta mprime from the downloads page ... I have disabled

Re: Mersenne: please recommend a machine

2003-03-07 Thread John R Pierce
whooops. I just sent a reply to 'Spike66's query on new machines to a completely differnet list by accident. Total brainfart. here's what I meant to post here Some of you hardware jockeys please give me a clue. I have two machines at home running GIMPS 24-7. One is a P4-2Ghz. The

Re: Mersenne: An officially sanctioned poach....

2003-01-27 Thread John R Pierce
I've identified 185 exponents that have had NO progress reported and are either: a) Below 12,000,000 and been assigned for 200 days or more, or b) Between 12 and 20 million and been assigned for 300 days or more Does anyone see any problems with releasing these exponents back into the

Re: Mersenne: Poaching -- Discouragement thereof

2003-01-24 Thread John R Pierce
But, no, you won't be able to complete a 10M on a P100 ;-) my slowest machine still on primenet is a p150 that has 60 days to finish 14581247, its been working on it for about 300 days now, 24/7, with nearly zero downtime. 2.22 seconds per iteration, yikes. I probably should retire this box

Re: Mersenne: Linux kernels

2002-12-05 Thread John R Pierce
Actually it's a lie. I've got a dual Pent III with 4Gb RAM. You cannot have a single process that uses more than 2Gb of RAM with any of the Linux 2.4 kernels. We hadda install Solaris on the box to do what we wanted to. how did you get more than 2GB of address space in usermode in a single

Re: Mersenne: christmas computer system?

2002-11-25 Thread John R Pierce
the fastest P4 cpus have a rated FSB of 533 (which is 266*2). running the bus at 333(666) would be overclocking. Ah, but most modern mobos can run the memory asynchronously to the processor bus. I think this goes back some way - certainly the Abit KT7A board (Athlon) could run the

Re: Mersenne: christmas computer system?

2002-11-24 Thread John R Pierce
I'm giving my brother's family a new computer for christmas. He'll buy it from a local (to him) 'white box' pc store and I'll pay for it. I am a little concerned about performance because the pc will probably be running GIMPS and I'd like to get my money's worth. It's easy to request a P4

Re: Mersenne: christmas computer system?

2002-11-24 Thread John R Pierce
Personally - although this is distinctly unfashionable - I far prefer Rambus memory - so far as GIMPS is concerned, a 2.53 GHz P4 using PC1066 Rambus memory (implying the i850E chipset) will outperform _any_ system up to 2.8 GHz using DDR memory. The point here is that the total memory

Re: Mersenne: christmas computer system?

2002-11-24 Thread John R Pierce
(yet more PC hardware details below... feel free to skip this if isn't your thing...) $213 Intel Retail P4-2.4B (these have the 533MHz bus) 2.53B should be very little more expensive. Last time I checked the first big price step was still between 2.5A/2.53B and 2.6A/2.66B. my store wants

Mersenne: Ernst Mayer's Mlucas pages

2002-11-09 Thread John R Pierce
Yesterday, Ernst posted his URLs for the Mlucas unix stuff... I've changed the URLs and fixed a bunch of the links on the pages. Ernst's pages:... GIMPS source code timing page: http://www.hogranch.com/mayer/gimps_timings.html Mlucas README: http://www.hogranch.com/mayer/README.html

Re: Mersenne: Ernst Mayer's GIMPS pages

2002-11-08 Thread John R Pierce
How many times did you try, and over how long a period? Last I heard, Ernst Mayer lived near San Jose, CA, and kept the web pages on a home machine. One headline at www.sjmercury.com reads actually, he's using MY server which is at my home in Santa Cruz, and in fact our power was out for

Re: Mersenne: Problems accessing the GIMPS source code timing pages

2002-11-08 Thread John R Pierce
Speaking of, I thought I'd converted you over to using http: addresses? its a much faster and more efficient protocol than FTP. instead of ftp://www.hogranch.com/pub/mayer/gimps_timings.html use http://www.hogranch.com/mayer/gimps_timings.html etc etc... I went ahead and dug into your HTML and

Re: Mersenne: WinXP SP1 slows prime95

2002-09-10 Thread John R Pierce
Yesterday I went from Windows XP home to service pack 1. The speed of prime95 went down by over 2%. Has anyone else seen this? Any ideas on what caused it or how it can be fixed? Code performance can vary more than that just based on cache and page boundries of where its loaded.

Mersenne: Warning, topic drift! (was Old 486 retired...)

2002-07-13 Thread John R Pierce
My brother once stated that an old computer is still usefull, because you can put a nice beatifull cloth on it, and use it as a coffee table. Myself, when I will be given time from other interests, I will study the problem of how can you control the christmas tree lamps with an old

Re: Mersenne: Prime95 as an NT/2000/XP service

2002-06-26 Thread John R Pierce
This question is for the serious NT sysadmins out there: Given that Microsoft strongly discourages NT services having a GUI interface, are there any problems or security issues I need to worry about? A GUI service must run under the Local System account. You can still use Hide Icon to

Re: Mersenne: v22.4 in Win95

2002-06-18 Thread John R Pierce
George told me that he has confirmed that Visual C++ 7.0 is bringing in this dependency, but that he didn't see an immediate way to get rid of it. Based on my very limited experience with VC++ 6.0, I would guess that going to Project-Settings-Link and taking out oleacc.lib ( if it is there

Re: Re: Mersenne: Slow Pentium 4 question - status report

2002-06-13 Thread John R Pierce
probably unusable without breaking the Microsoft licence. Remember that several PC recycling projects have run foul of this; even though the system was bought with a Windows licence, passing the system to a third party with Windows still installed is taken as a breach of the EULA. I'd like

Re: Re: Mersenne: Slow Pentium 4 question - status report

2002-06-13 Thread John R Pierce
I know that when I did my first tests of the memory prefetch on my Win95 Celeron II machine, prime95 would not work. Upgrading to Win98 fixed the problem. I also recall win95 had a problem that caused data corruption in Prime95 if you concurrently ran a process that used the MMX

Mersenne: new DSP architecture

2002-06-06 Thread John R Pierce
interesting... Picked off a email newsletter on microprocessor design... This thing sounds like it could *smoke* through Lucas-Lehmer FFT's... *** Intrinsity Arrays 2GHz Adaptive Matrix *** EPF 2002 Presentation Introduces FastMath By Max Baron {5/13/02-01} First presented at EPF 2002,

Re: Mersenne: Re: Mersenne Digest V1 #967

2002-06-06 Thread John R Pierce
But, to get back to the real topic, I checked out Intrinsificitienceality's supercalafragalistic website, and unless I'm misreading something, it's all 32-bit fixed-point arithmetic - very fast, and also completely useless for LL testing large exponents. We need fast double-precision

Re: Mersenne: Trace/breakpoint trap

2002-05-27 Thread John R Pierce
I have a new laptop which has some problems. First I ran tartest (a program I wrote which repeatedly untars the kernel source and compares the results) and found that one memory module is bad and the other is good. Next I found that when it compiles Linux, the result doesn't work. So I copied

Re: Mersenne: Re: Mersenne Digest V1 #941

2002-02-28 Thread John R Pierce
Was there _really_ no posting made to the Mersenne mailing list between Mon, 18 Feb 2002 (02:19:32 -0500 From: Justin Valcourt) and Tue, 26 Feb 2002 (19:46:54 +0100 From: Henk Stokhorst) ?? thats what I show here I get the individual emails rather than the digest -jrp

Re: Mersenne: further code optimisation using a recompile?

2002-01-27 Thread John R Pierce
I doubt that Intel compiler is based on Kai C++. Intel bought Kai. http://developer.intel.com/software/products/trans/kai/ http://developer.intel.com/software/products/compilers/c50/openmp.htm The last version of Kai C++ from Intel was 4.0, this new Intel C++ compiler is 5.0.

Re: Mersenne: further code optimisation using a recompile?

2002-01-27 Thread John R Pierce
As John points implies, you've got to be pretty committed to shell out ~$500 per system for the privelege of compiling code on your own hardware. It would take a _really_ significant speed boost to make that sort of expenditure worthwhile. I downloaded a free complete version for

Re: Mersenne: further code optimisation using a recompile?

2002-01-26 Thread John R Pierce
http://www.slashdot.org has a link to http://open-mag.com on a new Intel compiler for Linux an M$ Windows. The new compiler makes use of the new instructions in the Pentium III and IV. Of course, the most important part of the Prime95 code does not get compiled at all, since it has already

Re: Mersenne: Prime freezing when connecting by DSL to Primenet

2002-01-11 Thread John R Pierce
I am running version 21.4 of Prime. I recently started using a DSL connection on AOL. ( I am using Version 7.0 of AOL). Since I started using this arrangement, Prime locks up whenever it connects with Primenet. After some delay, during which time everything stops, Primenet reports an ERROR

Re: Mersenne: 10 million digit overkill

2001-12-25 Thread John R Pierce
Testing this number would take at least 2^(2^13466917 - 1) - 1 bits of storage. The supercomputer described above would not even come close to having enough RAM to store that. If it did, the LL test would then require approximately 2^13466917 - 1 massive iterations. If the computer

Re: Mersenne: P4 throttling

2001-12-23 Thread John R Pierce
I don't think I made the Thermal Monitor feature clear enough. From what I've read at Intel's website, I believe it is built onto the P4 chip, Yes, most current processors have a thermistor on chip some means of signalling the die temperature through the pin array. the P4 has numerous

Mersenne: silly, but...

2001-12-15 Thread John R Pierce
Ok, this is kinda silly, and if you are easily offended, don't go here.. but if you have a bent sense of humor (on topic for this list), check out the Prime Bear at. (requires a late model browser that handles java scripting reasonably well)

Re: Mersenne: silly, but...

2001-12-15 Thread John R Pierce
That is VERY strange... and I feel compelled to try and beat the current record of watching it get to above 52,490,219 :) May take me a while, but oh well... :) Good find. I got a laugh out of it. Just goes to prove my point that some people have WAY too much free time. :) gotta be

Re: Mersenne: Moving an assignment

2001-12-12 Thread John R Pierce
How would I go about giving an exponent I've been assigned to someone else? From previous discussions, it seems as though PrimeNet would reject the assignment as not belonging to him, but I've seen exponents moved from one account to another without expiring, so I know it can be done. I

Mersenne: last call for a santa cruz ride... (was: silicon valley 'prime' dinner)

2001-12-07 Thread John R Pierce
one more time, I'm offering a ride to anyone and everyone who wants to be picked up in the santa cruz or los gatos areas, leaving santa cruz around 5pm friday... I've got a brand new 7 passenger full sized van (Ford E150 'Traveler'), and 7 *is* a Mersenne prime number (2^3 - 1)... anyone

Mersenne: GIMPS meet in Mountain View

2001-12-07 Thread John R Pierce
Well, we had a nice get together in Mtn View tonite as planned. We toasted the requisite pitchers of the Tied House's rather excellent Dark and Stout... And we had a surprise visit by Donald Knuth himself. My pictures didn't come out that great, and I thought I took more than I apparently did,

Mersenne: silicon valley 'prime' dinner

2001-12-06 Thread John R Pierce
one more time, I'm offering a ride to anyone and everyone who wants to be picked up in the santa cruz or los gatos areas, leaving santa cruz around 5pm friday... I've got a brand new 7 passenger full sized van (Ford E150 'Traveler'), and 7 *is* a Mersenne prime number (2^3 - 1)... anyone wants

Re: Mersenne: Re: SF Bay area GIMPS party

2001-12-04 Thread John R Pierce
1) Tied House, Mountain View 2) Faultline Brewery, Sunnyvale either, orther, as far as I care... heh. re: ride sharing, I have a new 7 passenger van, and might be able to carpool folks from the Santa Cruz area... assuming I can go (I've got to check with SWMBO to make sure we don't have

Mersenne: Re: SF Bay area GIMPS party

2001-12-03 Thread John R Pierce
1) Tied House, Mountain View 2) Faultline Brewery, Sunnyvale either, orther, as far as I care... heh. re: ride sharing, I have a new 7 passenger van, and might be able to carpool folks from the Santa Cruz area... assuming I can go (I've got to check with SWMBO to make sure we don't have a

Re: Mersenne: World Test Status claims....

2001-11-27 Thread John R Pierce
It appears now that this claim is also somewhat invalid, as Cray's current champion is an 8,192 GFLOP machine called the SX-6/1024M128, a machine with 128 vector processors, or 64 MFLOPS per processing unit. As such, it seems that GIMPS is now truly only equivalent to about one quarter

Re: Mersenne: Re: SF Bay GIMPS party (was Mersenne #39)

2001-11-25 Thread John R Pierce
John R Pierce [EMAIL PROTECTED] listed some sites in Monterey. So far, however, only he and I have expressed interest in that location. Unless at least five mailing list members express interest in Monterey by December 1, we should go elsewhere. Of course there is nothing to preclude

Re: Mersenne: Re: SF Bay GIMPS party (was Mersenne #39)

2001-11-18 Thread John R Pierce
Can anyone come? Announce it on the list if you do it. Where abouts are they held? I will if I can. Depends on the date and family conflicts and where in the rather sprawling SFBA it is... I'm in Santa Cruz, so naturally would prefer points towards the south end of the Bay Area...

Re: Mersenne: Re: SF Bay GIMPS party (was Mersenne #39)

2001-11-18 Thread John R Pierce
The Western Number Theory Conference http://home.earthlink.net/~bartgoddard/mainpage.html meets in Monterey (acutally Asilomar) then it would follow we should meet in the Monterey area. Santa Cruz is a 45 minute drive from Monterey, silicon valley 90 minutes or so. I'd be

Re: Mersenne: number of processors participating

2001-11-08 Thread John R Pierce
Finally, reasonable configuration of a firewall (even a personal firewall product installed on the workstation itself) will prevent exploitation of a Back Orifice type trojan, even if one does manage to sneak in unnoticed - these work by creating a listener which allows those in the know to

Re: Mersenne: mprime for Solaris x86 ?

2001-11-03 Thread John R Pierce
I have to do some work with Solaris 8 on x86 (i.e. Intel processors), and was wondering if anyone felt inclined to port mprime to this OS. I'm quite inclined to suspect that mprime would just compile right over for Solaris.I don't know how the assembly is handled (is it intel syntax, or

Mersenne: synchronization..

2001-11-02 Thread John R Pierce
My 'personal report' shows 'exponents returned since last synchronization' going back nearly 12 months (November 2000). Has it really been a year since primenet synched with George's master database?!? -jrp _ Unsubscribe

Re: SV: Mersenne: number of processors participating

2001-10-30 Thread John R Pierce
I've had similar problems with a few other multimedia sorts of junkware. Near as I can tell, some of these things put their video or animation thread at Idle_Priority+1 or something, and it gets eaten alive by Prime95. Isn't it the old problem - no matter what priority a process is

Re: SV: Mersenne: number of processors participating

2001-10-29 Thread John R Pierce
Still the only time I've ever seen Prime95/NTPrime slow down a system is when I was doing some Netmeeting video conferences. With it running, the video conference would run DOG slow. Stop the NTPrime service and curiously had to restart the video conference for the effect, but the video would

Re: Mersenne: Mprime crash

2001-10-27 Thread John R Pierce
Presumably a badly written Linux driver can cause the same problems as a badly written Windows driver. Yes. There is however a subtle difference. Linux drivers come with source code, so if there is a bug, any competent programmer can fix it. very very few programmers are qualified to

Re: Mersenne: Re: Problems with Firedeamon and Prime95

2001-10-19 Thread John R Pierce
Is there a way to install Prime95 and Firedeamon without having these problems? I hope that a solution can be found soon, as we try to integrate prime95 into the image file from where all the workstations are set up. I'm unaware of what Firedaemon really is, but to me, it sounds like some

Re: Mersenne: Re: AthlonXP

2001-10-16 Thread John R Pierce
Maybe we're not understanding what is meant by microcode... The only CPU I've designed was a 4-bit system that didn't use microcode to get it's work done (it was for a class), so I can't claim direct experience, but I at least thought I knew what the word microcode implied... a level of

Re: Mersenne: AthlonXP

2001-10-15 Thread John R Pierce
There's something a bit screwy about the way your messages are encapsulated here, when I recieve them the message body is appearing as an .txt attachment. I haven't seen that happen from anyone elses mail (and I get a lot of email from numerous lists). MIME formatted mail is generally bad on

Re: Mersenne: Prime Net Server

2001-09-09 Thread John R Pierce
Such an outage didn´t occur for the first time in my (nearly) three years supporting GIMPS and others will follow. May be that´s one reason why GIMPS lost about 8.000 to 9.000 machines during the last six months. I dunno, I've let about 1/2 my machines drop out, they were mostly p133 and

Re: Mersenne: Like missing baby's first step

2001-07-30 Thread John R Pierce
I stepped away from my machine at 99.92% completion of its iterations, and when I came back it was 0.04% into processing the next number. Is there some way I can see what happened? Some sort of log file? results.txt in the prime95 directory.

Re: Mersenne: Good news for Pentium 3 and Celeron 2 owners

2001-06-22 Thread John R Pierce
I feel it is ridiculous that George has to beg/borrow the latest architecture in order to optimise Prime95. I also know from being a member of the prime search community for the last three years the amount of hard work George puts into the project. agreed. how come AMD isn't burying George

Re: Mersenne: taxifornia brownout

2001-06-09 Thread John R Pierce
You may have heard that our so-called Governor, here in the great state of Taxifornia has proposed replacing rolling blackouts with universal brownouts: reducing line voltage about 10-15% on hot days this summer. Any guesses at how that will effect a computer running GIMPS? as long as the

Re: Mersenne: GIMPS accelerator?

2001-05-15 Thread John R Pierce
I know very little about computer architecture, so please feel free to shoot me down if what follow is complete nonsense. GIMPS clients use the spare capacity of the primary processing resource within any computer:- the CPU(s). But most modern PCs have another component capable of

Re: Mersenne: GIMPS accelerator?

2001-05-15 Thread John R Pierce
This question pops up every once in a while. A few years ago I looked through a postscript manual wondering how difficult it would be to build a postscript file that crunched RC5 keys when a printer tried to render it. postscript is essentially forth, after all. Trouble is, most postscript

Re: Mersenne: stopping Win98 from needlessly swapping

2001-05-12 Thread John R Pierce
I also noticed that the hard drive light blinks every second or so. Does win98 agressively swap to disk like windows NT does, even when it's not needed? At least for NT there was a magic registry hack to make it stop, which I don't see in '98. I'm wondering if this is the cause of the

Re: Mersenne: Slow CPU's in a Proliant 2500

2001-05-07 Thread John R Pierce
That is probably your problem. Your bus is only 66 mhz. You are not able to access your memory as fast as you want to process the data. I once upgraded a 486 100Mhz to a 486 150Mhz (I think, it was a while ago) and there was almost no change in the speed. I overclocked the memory bus

Re: Mersenne: Re: build-it-yourself Athlon

2001-04-17 Thread John R Pierce
Fry's (a big local discount computer electronics chain) has a great deal on build-it-yourself Athlons (US$ 350 for 1.2GHz CPU, MB, case, floppy, ethernet card, 56K modem video card) so I'm going to take the plunge. those motherboards in those starter kits tend to be JUNK. ... The

Re: Mersenne: Is there any life here?

2001-04-16 Thread John R Pierce
NO Mail lately, just wanted to know if the list is active! there's been a few postings a day on the average, about 20 total in the last week. I suspect your sub-scription somehow got un-sub-scripted :) -jrp _

Re: Mersenne: Getting new GIMPSers

2001-03-25 Thread John R Pierce
Hmm ... my comp has NO idle time anymore (8 even with prime95 running 24/7 on my Windows2000 system, it seems to come up with a FEW idle cycles. I figure its when prime95 gets paged out or something. I rebooted a couple of hours ago after photoshop blew up and left the system kinda crispy, in

Re: Mersenne: Getting new GIMPSers

2001-03-25 Thread John R Pierce
How does idle time accrue *to a process*? Idle time is when the CPU is not executing any process. in virtually every multitasking OS, there is a special "IDLE" process. This is usually something as simple as... idleloop: HLT JMP idleloop and this process is

Mersenne: phew, one way to get cycles...

2001-03-21 Thread John R Pierce
heh, a friend just ran this by me for my amusement, seems a 3rd friend has juno.com as heir ISP and juno just revised their service agreement, embeeded in it was the following little nugget... 2.5. You expressly permit and authorize Juno to (i) download to your computer one or more pieces

Re: Mersenne: VB primality test program

2001-03-12 Thread John R Pierce
I'm looking for a primality test program source code written in VB, for fun and adventure. Just want to mess around a little. Searched a little with no luck. I'm afraid VB would be awfully slow at any sort of intensive numerical work like this, and not very good with precision either, so I

Re: Mersenne: numbering the messages

2001-03-10 Thread John R Pierce
Well there isn't a good reason why not, and there is already a counter of sorts in the Message ID in the header, but it's not very human readable. Surely the list management software keeps a count of how many posts have been sent out to the group, it's just a case of reading/writing that

Re: Mersenne: CPU operating temps

2001-02-27 Thread John R Pierce
Secondly, One *should* use some sort of thermally conductively compound between your processor and heatsink. The truth of the matter is that the joint made between the bare heat disapator on the processor (Using the Socket7 type example since we are talking about the Cyrix MII 233

Re: Mersenne: Re: Spontaneous reboots

2001-02-23 Thread John R Pierce
Checking your voltages temps while in the BIOS probably isn't a huge help in this case. By the fact that you only have reboots after Prime95 has been running for a bit indicates it's a problem that is occurring under full load. In the BIOS screen your certainly not under any kind of

Re: Mersenne: Re: Spontaneous reboots

2001-02-23 Thread John R Pierce
On Fri, Feb 23, 2001 at 06:04:01PM -0600, Shane Amy Sanford wrote: That is the kind of program you need to find for Linux though. I'm running lmsensors, but it appears like the values it reports are somewhat off... I've noted that various motherboards seem to require custom

Re: Mersenne: P4 speed and implications thereof

2001-02-13 Thread John R Pierce
On the way, 64 bits machines, with Thunderbird like, micro-decoded and 8086-compatible, very performant and inexpensive. Intel product, 8086-incompatible ... the 86 architecture is a dinosaur, designed in 1978 to inherit features of the 8080 which was designed in 1973, and needs to die.

Re: Mersenne: P4 speed and implications thereof

2001-02-12 Thread John R Pierce
486 ?? 25-100MHz, factor of 4 Pentium 60 MHz - 200? MHz factor of 3.3 P55c (mmx) hit 233MHz, I believe, for almost 4X other pentiums ?? P6 architecture (which includes PPro, P2 and P3), 166 - 1GHz+ (factor of 6+)

Re: Mersenne: Re: P4 Optimization

2001-02-12 Thread John R Pierce
Today's mystery: I've found a case where adding a NOP instruction speeds up the code by 9%. Not just a small loop, the 9% speedup affects the entire 2nd pass of the FFT! As of now I have no theories or explanations. Time to write some more code fragments to figure it out. I wonder

Re: Mersenne: P4 speed and implications thereof

2001-02-11 Thread John R Pierce
I wonder how many people are going to have P4s. Presently, the Athlon is faster for most things, and cheaper. I don't know if the P4 will pull ahead of AMD chips for most things, so will people buy them? the P4 is likely gonna ramp up to 2GHz, 3Ghz and beyond faster and farther than AMD can

Re: Mersenne: Overclocking - bad for project?

2000-12-23 Thread John R Pierce
My opinion is that it's better to have fewer correct results than to have the central database poisoned by loads of "don't think it's prime, but the user was overclocking" results, which of course cannot be distinguished from perfect answers. I'd trade two unreliable answers for one honest

Mersenne: primenet synchronization

2000-12-18 Thread John R Pierce
Is it just me, or have we not had a database sync for a long time between George and primenet? my personal results file on primenet is showing values going back to March... Also, just noted this one... 11765981 73 F 9413069237925298809767 13-Dec-00 15:58 p3-500 its been so

Re: Mersenne: P4 - a correction

2000-11-28 Thread John R Pierce
One of the nicer things about the windoze implementation of mprime is the facility to manually stop restart the program from the main menu. It gives up its main workspace whilst suspended in this way, though obviously retaining the relatively small resources belonging to its process

Re: Mersenne: P4

2000-11-27 Thread John R Pierce
I understand that the SSE2 instructions operate only on 64-bit (and 32-bit) floating point data, whereas the FPU registers support 80-bit intermediate results. I know this is a little off-topic, but how good is the P4 at integer operations? not that off topic at all. Integer

Re: Mersenne: P4 - a correction

2000-11-27 Thread John R Pierce
A question for readers. Prime95 currently uses about 8MB (exponent around 11 million). How would you feel if the P4 optimized version used 13MB? 23MB? 33MB? my machines have anywheres from 128MB to 512MB, so a 32MB footprint would be little problem.

Re: Mersenne: Refresh rate for prime95

2000-11-14 Thread John R Pierce
When prime95 running my screen is always shaking. Are you using a Dell Optiplex? This suffers from a design flaw in which the onboard video out is placed adjacent to the CPU and picks up EMF from the CPU when the CPU is doing heavy FPU work (such as factoring primes). Its probably a

Re: Mersenne: bug in Wordpad?

2000-10-30 Thread John R Pierce
It is not really the OS (although UNIX does have a lot of nice tools for this type of thing) it is wordpad that is not really the most capable text editor. If you are using Windows I would suggest you try TextPad which is available for 30 day evaluation from www.textpad.com. another very

Re: Mersenne: Slow iterations

2000-10-09 Thread John R Pierce
I am running Windows98 on a Pentium computer. Recently, Prime95 started running at 8 seconds per iteration. When I killed process Alogserv, it went back to running at .28 seconds per iteration. What is this process, and how do I get rid of it? Thanks. not sure, but find the executable file

Re: Mersenne: Why do I get only double-checks

2000-09-14 Thread John R Pierce
I'm using a P3-500E box at college to run mprime. The relevant lines of the local.ini look like LastEndDatesSent=967023734 RollingStartTime=968950008 RollingAverage=4000 CPUType=1 CPUSpeed=500 CPUHours=24 How come I get given only double-checks to do? I don't mind too much -- the

Re: Mersenne: Re: Miscellany

2000-08-14 Thread John R Pierce
But, on the other hand, is amazingly much simpler (you can quite easily write a GIF reader in a couple hundred lines of C and spend a few lawyer-years negotiating with Unisys over payments for use of the Lempel-Ziv patents

Re: Mersenne: Re: PNG (good!)

2000-08-12 Thread John R Pierce
If you are referring to Lynx, then it may be that Lynx has deceived the webserver. If I recall correctly Lynx (at least of a few versions ago) told webservers that it was netscape to avoid the server not sending the page. oh, and on my personal webpile (along with a few other folks piles I

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