Mersenne: Re: Icon
On Wed, Feb 02, 2000 at 07:58:17PM -0500, Vincent J. Mooney Jr. wrote: Prime95 disappears when I minimize it. It used to be on the taskbar (right word?) at the bottom of the WIN98 screen. Prime95 doesn't disappear -- if you look in your system tray, you will find a small Prime95 icon that you can double-click to reveal the big window. If you really want it to be on the taskbar taking up space all the time, you can just deselect `Tray Icon'. Can't there be an icon on the desktop, as I originally asked? Yes, there can, although I don't know why you'd want it. Right-click on your desktop, choose New/Shortcut, and follow the steps for making a shortcut to prime95.exe. Also, is there a FAQ about this? See the README.TXT file that is included in the zip-file. In answers most of your questions, although not the `icon on desktop' problem. /* Steinar */ -- Homepage: http://members.xoom.com/sneeze/ _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: Version 20 memory questions
Here is one (lonely?) vote to set the defaults rather high. I have some over-generalizations that encourage you to let the system manage memory itself. I expect that Mersenne generally runs on the fastest machines, which tend to have lots of memory. I think it's great we can put it to use! If the machine bogs down, provide some simple dial to let the user manually recover the performance. In attempting to out-guess the operating systems' memory management scheme lies madness. There are too many platforms and too many PC types to do this effectively. Instead, your time may be better used by finding quick, simple, intuitive ways for users to control the program. I'm in favor of your daily scheduling, and perhaps a "wait +30 minutes" button that's very easy to press. NT manages its resources better than 95/98. A well-tuned OS will expand its working set to fill all physical memory. Like my young boys, I have no problem letting Mersenne run at full tilt, but I want it to meekly submit when it's time to quiet down. Good luck, you're tackling a tough problem! Thanks for checking, Barry "Hydrogen - a colorless and odorless gas which, given enough time, turns into people." _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: Re: Smooth and hairy numbers
On Thu, 03 Feb 2000, [EMAIL PROTECTED] wrote: If smooth numbers are ones whose prime factors are all small, what then are hairy numbers? Is there an official definition? "And Jacob said to Rebekah his mother, Behold, Esau my brother is a hairy man, and I am a smooth man:" (Gen. 27:11) Also, Greek has smooth and rough breathing, called psilé kai daseia. Daseia means hairy. I looked in Eric Weisstein's World of Mathematics and found no hairy numbers. There are, though, a Hairy Ball Theorem (the hair has to have a whorl or other singularity somewhere) and Haar integral, function, measure, and transform (one cycle of a square wave at a power-of-two frequency). phma _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Results of version 20 memory questions
Hi everyone, Thanks to all that replied to my earlier email. Here I'll summarize, in no particular order, the important points in the replies It seems the majority of responders feel the prudent decision is for prime95 to use the minimum amount of memory by default. I will have prime95 default to 8MB of memory in the Options/CPU dialog box. If the user leaves this value unchanged I'll pop up a message box explaining why he might want to increase the value. I should also display this message when a user upgrades from v19 to v20. No one suggested a sure-fire method for making sure prime95 is not causing thrashing. Some did suggest Windows calls that will yield useful data - but were vague on how these statistics are to be interpreted. I imagine there isn't a single solution that will satisfy every users setup and thus it is best for prime95 to let the end-user make the decision for his machine. Stage 1 of P-1 stage 1 uses the same amount of memory as a LL test. Thus, even those users that do not give prime95 more memory to work with will do a little P-1 factoring. For example, exponent 10,000,139 P-1 will go to B1=13 with a 2.02% chance of finding a factor (cost is 1.87% of an LL test). If given 48MB of memory, prime95 uses B1=11 and B2=1815000 with a 4.15% chance of finding a factor (cost is 3.17% of an LL test). If you give prime95 48MB of memory but only from 11PM to 7AM, then if stage 2 needs to run between 7AM and 11PM prime95 will instead begin work on the next item in the worktodo.ini file or begin the LL test on the assumption you are unlikely to find a factor anyway. P-1 factoring will be a separate work assignment when Scott has the time to make the necessary changes on the PrimeNet server. The initial release of version 20 will probably not have separate assignments. Some suggested prime95 grow and shrink memory usage based on paging rates, etc. Apparently, I did not explain the stage 2 requirements very well. Before embarking on stage 2, prime95 needs to know how much memory it can use. Once stage 2 has begun, prime95 cannot grow or shrink its memory consumption. Best regards, George _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: The return of poaching?
Some of you may have noticed, as I have, that the incomplete double-checks in the 2-2.5M range have been being finished up very quickly the past few weeks, much more so than the past several months. A quick look in the cleared exponents file reveals many recent results reported by a user "rick" who apparently has several fast Pentium IIs doing double-checks. A look in the the assignments file reveals not a single small exponent reserved by this user. Not a big deal in the greater scheme of things, but frustrating to people like diamonddave and myself who make an effort to seek out the smaller exponents and reserve them. I don't know exactly what our policy is on this matter, or what we can do about it the the facts are as they seem to be. But it seemed worth bringing the matter up. Gordon Bower _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Re: Mersenne Digest V1 #686
I am using WIN 98. How do I set up an icon on the desktop to kick off PRIME95 ( If the computer crashes, give it the three-fingered salute. Then, if you have Prime95 set as a Win95 Service, it'll start automatically. Stephan "Heil Gates!" Lavavej _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Re: Smooth and hairy numbers
If smooth numbers are ones whose prime factors are all small, what then are hairy numbers? Is there an official definition? "And Jacob said to Rebekah his mother, Behold, Esau my brother is a hairy man, and I am a smooth man:" (Gen. 27:11) George S. _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
