Re: Mersenne: Re: Mersenne Digest V1 #895

2001-10-27 Thread Gareth Randall

It's actually a Microsoft program and is one of their kernel toys package. 

http://www.microsoft.com/windows95/downloads/contents/wutoys/w95kerneltoy/

I'll answer to the group as well since this is a very useful tool for prime95 users. 
It allows you to spot processes that go into busy waits and the like which waste CPU 
time. Try holding the mouse button down on the desktop - went to 100% CPU on my Win95 
system, but I haven't used that in over a year now!

[EMAIL PROTECTED] wrote:
 
 Hi group
 
 This question was asked before but I lost the info.  What is the website to obtain a 
copy of  WINTOP, the memory usage program.  Also, what is the site for the archives 
of this list.
 
 Please answer this directly to me.
 
 Thanks
 Irv Rosenfeld

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Mersenne: 3 years

2001-10-27 Thread Lars Lindley

Hey everybody!

Yesterday (friday 26th) it was three years since I joined the search!
It's been fun!

My team is 
Account IDLL P90*  Exponents  Fact.P90  Exponents  P90 CPU
 CPU yrs  LL Tested  CPU yrs*  w/ Factor  hrs/day
-- ----    -  ---
Team_LiTH   122.875  492   4.112   381013.12

and right now we are at place 70 in the top producers!

We are using 25 machines of all types. K6-2, Athlon, PI, PII, PIII.
I recently retired my old 486. It was doing one factorisation every 
3-4 months or so...

Now me and another teammember will go out and celebrate :)

I just wanted to say KEEP UP THE FUN WORK! :)

Regards,
/Lars Feeder of FPU's Lindley
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Re: Mersenne: Re: Mersenne Digest V1 #895

2001-10-27 Thread Jud McCranie

At 08:46 AM 10/27/2001 +0100, Gareth Randall wrote:

I'll answer to the group as well since this is a very useful tool for 
prime95 users.

Yes, it is great.  On Windows XP ctrl-alt-del shows that information (maybe 
on Win 2000 too).  However, WinTop puts blanks for zero percentages whereas 
ctrl-alt-del on WinXP shows 00.  It doesn't even omit the leading zero.




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Mersenne: number of processors participating

2001-10-27 Thread Henk Stokhorst

L.S.,

I read a message some time ago on this list that claimed that the number 
of processors had gone down by about 9000. I don't have stats on this 
other than the actual available from the status pages. Does anyone have 
stats over the last year, like numer of pc's and/or processor types, 
processor speeds?

If there would really have been a decrease in participating processors, 
(I don't think so) an updated graph of Primenet throughput would show by 
now, is there any update in the pipeline?

I went through the status.txt file to see if the new 'stress test' 
button could have played a significant role, I don't think so. By the 
way if one runs prime95 without a user name the application fills in an 
S0 as user name. I found 3170 entries with a name '.' (only a dot) 
The fast majority of these entries seem to be have been abandoned. They 
have been reserved over a long time with a constant daily flow. Does 
anyone know more about this?

YotN,

Henk Stokhorst

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Mersenne: Task Manager

2001-10-27 Thread Hoogendoorn, Sander

 
Jud McCranie wrote:

 On Windows XP ctrl-alt-del shows that information (maybe on Win 2000
 too).

On both W2K and XP you also have to press the Task Manager Button, or
press ctrl-shift-esc to go there right away

Sander
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Re: Mersenne: Task Manager

2001-10-27 Thread Jud McCranie

At 09:37 PM 10/27/2001 +0200, Hoogendoorn, Sander wrote:

On both W2K and XP you also have to press the Task Manager Button, or
press ctrl-shift-esc to go there right away

C-S-esc doesn't work for me, but C-S-Del and then the Processes tab.  If 
you close with the processes tab selected, it comes back up that way.


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Re: Mersenne: Mprime crash

2001-10-27 Thread bjb

On 26 Oct 2001, at 11:36, Nathan Russell wrote:

 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. Also there is almost invariably a mechanism for feeding 
patches back into the source tree. On the other hand, Windows 
drivers come wreathed in obscurity, usually clouded even further by 
licenses which prevent disassembly and therefore effectively make 
it illegal for anyone other than the original author to post a fixed 
version.
 
 IIRC, Linux drivers that are kernel modules do run in real mode;
 someone on the list please correct me if I'm wrong.  

No, they don't run in real mode - which gives access to only the 
bottom megabyte of memory, in 16-bit mode, i.e. you're using the 
system as a fast 8086. Win 9x/ME drivers _do_ run in real mode!

Some parts of some drivers (in proper 32-bit operating systems like 
linux, also Windows NT/2K/XP) _need_ to run in ring 0, which does 
allow unrestricted access to all memory, thus allowing the driver to 
trample on memory belonging to other processes. Part of the art of 
writing successful drivers is to do as little as possible in ring 0.
 
 This raises the question of why some folks have mentioned that drivers
 under NT/2K don't cause these sorts of problems

They're much less likely to. For a start, it's easier to write ring 0 
code than real mode code on a 32-bit system; e.g. there's less 
room to confuse 16-bit and 32-bit addressing modes. Secondly, as 
I pointed out above, you can get out of ring 0 to do most of the 
work, so most of the time you have full protection from the OS to 
prevent you from clobbering someone else's memory.

Regards
Brian Beesley
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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 debug obscure device driver
problems, especially so when the problems involve realtime interactions such
as issues with sound driver IRQ latency or whatever.  More so since the vast
majority of modern PC hardware is undocumented (ever seen the tech ref for a
Soundblaster Live, or a Nvidia Geforce chip, or even a late model network
controller?)



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Re: Mersenne: number of processors participating

2001-10-27 Thread Steve Harris

Henk, I don't have a consistent set of statistics, but I do save the world
test status page every few months. So I can tell you that on 2-apr-2001 it
showed 38652 machines on 20983 accounts, and right now it shows 30186
machines on 15659 accounts. I'm sure I didn't just happen to catch it at its
peak; I recall there being over 21000 accounts at one time.

WRT team '.', I recall a few months ago it seemed to be holding up some
double-checks at the low end of the assignments, but it did eventually
complete them all.

Steve Harris

-Original Message-
From: Henk Stokhorst [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Saturday, October 27, 2001 1:20 PM
Subject: Mersenne: number of processors participating


L.S.,

I read a message some time ago on this list that claimed that the number
of processors had gone down by about 9000. I don't have stats on this
other than the actual available from the status pages. Does anyone have
stats over the last year, like numer of pc's and/or processor types,
processor speeds?

If there would really have been a decrease in participating processors,
(I don't think so) an updated graph of Primenet throughput would show by
now, is there any update in the pipeline?

I went through the status.txt file to see if the new 'stress test'
button could have played a significant role, I don't think so. By the
way if one runs prime95 without a user name the application fills in an
S0 as user name. I found 3170 entries with a name '.' (only a dot)
The fast majority of these entries seem to be have been abandoned. They
have been reserved over a long time with a constant daily flow. Does
anyone know more about this?

YotN,

Henk Stokhorst

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Re: Mersenne: number of processors participating

2001-10-27 Thread Nathan Russell

(Sorry Steve, I meant to send this to the list)

On Sat, 27 Oct 2001 21:11:51 -0500, Steve Harris
[EMAIL PROTECTED] wrote:


Henk, I don't have a consistent set of statistics, but I do save the world
test status page every few months. So I can tell you that on 2-apr-2001 it
showed 38652 machines on 20983 accounts, and right now it shows 30186
machines on 15659 accounts. I'm sure I didn't just happen to catch it at its
peak; I recall there being over 21000 accounts at one time.

My first guess is that we're beginning to compete with the various
commercial projects (of which there are several now, and were none 2
years or so ago).  

It's hard for me to envision that causing a fifth of the participants
to leave, though!  

Nathan
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