Mersenne: Re: running prime95 while a login screen is active

2000-08-16 Thread Steinar H. Gunderson

On Wed, Aug 16, 2000 at 02:13:47PM +0200, Reto Keiser wrote:
>These pentium computers are running win95 and a novell network
>(but the win95 login screen). Each pupil has an own login
>Is it possible to install prime95 in a way, that it runs
>always, even while the login screen is active? What about 'running as
>service'?

The `running as service' is exactly what you're looking for (in the Options
menu). Just be sure to remove Prime95 from the Startup menu (where, for some
reason, the installer obviously puts it -- argh!) -- if your pupils don't really
know what Prime95 is, consider LockUserInfo=1 (see undoc.txt) and possibly `No
Icon' too.

(Side note to George: Would it somehow be possible to include computer IP in the
selection of what prime.ini file to use? I'm having the problem that the
machines at school are quite often ghosted, and thus they lose their save-files
etc. -- if I could give each their own share at a SMB server, that would
probably solve a lot...)

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Mersenne: running prime95 while a login screen is active

2000-08-16 Thread Reto Keiser

Hi

I have currently the opportunity to run prime95 during the summer
holiays in the computer lab of a college. At the moment, all clients
were started manually in a special account.
When school rebegins in two weeks this would not be possible any
more. So i have to install prime95 in a way, that starts automaitaccly
at each login.

These pentium computers are running win95 and a novell network
(but the win95 login screen). Each pupil has an own login
Is it possible to install prime95 in a way, that it runs
always, even while the login screen is active? What about 'running as
service'?

---

p-1 double chack:

At the meoment a p-1 test will be performed before each firstLLtest and
each Doublechack. As far as I know primenet does not save these results,
so each p-1 test will be done twice. Is it possible to avoid that?

At the moment, it is possible to look up the exponent in Eric
Hahh's list, which is quite unwieldy if there are many exponents,
and not everone is sending the bounds to Eric, either.

Reto

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Re: Mersenne: Miscellany

2000-08-16 Thread FOSSANO Patrick OCISI

> Subject: Re: Mersenne: Miscellany
> 
> [EMAIL PROTECTED] wrote:
> 
> Thought:  If a website uses images, does it necessarily have to care that
> text-based browsers won't see them?  No.
> 
What? Do your banners really not be WAP-compatible? :-D

Well, will have a "WAP-phone" enought power to run a quick LL-test :-??

Patrick
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Mersenne: Re: Mersenne Digest V1 #769

2000-08-16 Thread STL137

<>

Yes, I did forget this in my original post.  I was _thinking_ it, though.  
:-P  And indeed on my website which I make in pure WordPad, I do include ALT= 
tags on all of my images.

<>

Yes, it's like comparing a beautiful jewel to a bloated cow.  Sorry

<>

I agree.  Thank you for correcting me.

<>

The point is that libpng and zlib are _already written_ for you.  And 
anyways, have you ever read the PNG format specification?  I'm just beginning 
to program C, and have no prior experience with any file formats at the bit 
level, but after I read the PNG spec I understood that it was beautiful.  
It's simple and it makes sense.  GIF doesn't make sense to me.

<>

Cool!  :-D

Stephan "unsigned long int" Lavavej
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Re: Mersenne: Miscellany

2000-08-16 Thread Alexander Kruppa

[EMAIL PROTECTED] wrote:

> Thought:  If a website uses images, does it necessarily have to care that
> text-based browsers won't see them?  No.

Yes. There are *many* blind people who rely on speech output of on-screen text.
A friend of mine gradually loses eyesight and is beginning to train for using
the speech output. Ever since I saw that, I kinda loathe web pages with only a
huge clickable image map on them. Text info on all elements of a web page is a
*Good Thing*, even if you dont count those who use old browsers or prefer
surfing with images switched off.

Ciao,
  Alex.

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Mersenne Digest V1 #769

2000-08-16 Thread Mersenne Digest


Mersenne Digest   Wednesday, August 16 2000   Volume 01 : Number 769




--

Date: Sun, 13 Aug 2000 21:52:27 +0200
From: "Steinar H. Gunderson" <[EMAIL PROTECTED]>
Subject: Mersenne: Re: Athlons on DDR MBs

On Fri, Aug 11, 2000 at 01:06:11PM -0700, Stefan Struiker wrote:
>much cooler, and the 700 (see review) has been pushed to nearly 900 without
>much complaint or special cooling.

Funny, my 800 usually reboots frequently while torture testing, even on `only'
880MHz... 800 is rock stable, though. (Non-DDR, though...)

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--

Date: Sun, 13 Aug 2000 16:32:22 EDT
From: [EMAIL PROTECTED]
Subject: Re: Mersenne: GIMPS on Sun Sparc.

Nacho <[EMAIL PROTECTED]> wrote:

> I will have a SparcStation at work and I want to put it to do some useful
> work with GIMPS.
{snip}
> A SparcStation is not a very fast machine and I will have it only for 6
> months, so perhaps it will not be very fast to do LL test in new exponents,
> and perhaps I'll do doublecheck better.

The "best" choice here depends on the type of Sparc, how many hours per day
you'll be getting on it, and your taste with respect to assignment type.

If you like to be able to turn something in at least once a month or so,
double-checking is the way to go. DCing is also a better use of the cycles
on hardware where there is a significant relative performance drop in going
from DC to first-time-test sized exponents. Interestingly, an old Sparc 1
is often better in this last regard than a top-of-the-line E450: the Sparc 1
shows lower relative performance at DC-size exponents, but suffers little or
no performance degradation at larger runlengths. So if you don't mind waiting
3-4 months for a result and prefer doing first-time tests, go ahead and set
your old Sparc to doing one.

> Are there binaries for Mfactor for Sparc/Solaris? I found Mlucas binaries but
> not Mfactor binaries. I don't have a f90 compiler.

No Sparc binaries at present, but Mfactor is written (not by me) in ANSI C,
so just follow the compile instructions in the source code header.
One caveat, though: for sieving up to depth 2^53, Mfactor performs OK on
the Sparc because it can use the FPU to help with the double-width integer
multiplies. However, the Sparc truly sucks at integer multiply (Jason
Papadopoulos likes to say that this is the *only* thing the Sparc sucks at),
so for sieving beyond 2^53 the Sparc will be pretty awful. You'd be better
doing the factoring on a PC (or not at all) and using the Sparc for LL
testing.

> I suppose that LL results are 100% identical to Prime95 results, so LL test
> will be accepted by primenet server in manual assignment, right?

Yes. You do need to paste *only* the exponents into the Mlucas worktodo.ini
file. When your latest job finishes, copy the last line of results.txt (or
of the *.stat file corresponding to the exponent in question) into the
PrimeNet manual tests form and submit. When reserving exponents, I suggest
you ask for the maximum amount of time (120 days); if the exponent isn't done
at the end of that period, you can extend the assignment by another 120 days.

Which CPU type you report to the server when requesting work is up to you.
I usually enter "Pentium" or "PII/PPro" so as to get a reasonable amount of
work (I'm not sure what weighting factor the server uses for machines entered
as "Other".) I suspect other Mlucas users do the same, which means that non-x86
machines are underrepresented (relative to their true numbers) on PrimeNet's
world test status page.

> If I use the manual assignment pages at PrimeNet, will I receive time credits
> at Primenet status pages?

Your manual test work won't show up on the PrimeNet server's pages, but will
appear on George's master list, www.mersenne.org/top.htm and ...top2.htm ).
I'm somewhere between #200 and #300 on the top2.htm page, and 90% of that
work is from Mlucas manual tests. (Admittedly, I have access to slightly
more hardware that a single Sparc, but every contribution is valuable.)

Happy hunting,
- -Ernst

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--

Date: Sun, 13 Aug 2000 16:06:42 -0700
From: Stefan Struiker <[EMAIL PROTECTED]>
Subject: Re: Mersenne: Re: Athlons on DDR MBs:  The "Science" Of Overclocking --  A 
Bell-Curve Black Art?

"Steinar H. Gunderson" wrote:

> Funny, my 800 usually reboots frequently while torture testing, even on `only'
> 880MHz... 800 is rock stable, though. (Non-DDR, though...)
>
> /* Steinar

Re: Mersenne: Miscellany

2000-08-16 Thread STL137

<< Yes. There are *many* blind people who rely on speech output of on-screen 
text.>>

A good point, and the ALT tag is very useful.  But although blind people and 
people with Lynx can't see images, that's no reason not to use images at all. 
 Images + ALT tag is the way to go.  Likewise, just because ancient browsers 
which make up 5% of all browsers out there can't see PNG, that's no reason 
not to use PNG at all.  PNG + ALT tag is the way to go.

Stephan Lavavej
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