RE: Mersenne: P-1 and non k-smooth factors

2002-12-05 Thread Aaron
"Do not add the /3GB switch if you are running Windows 2000 Server, Microsoft Small Business Server 2000, or Microsoft BackOffice Server 2000. This switch is designed for use only with Windows 2000 Advanced Server and above." (from the MS knowledge base). Same applies to NT 4, where it only works

Re: Mersenne: P-1 and non k-smooth factors

2002-12-05 Thread Gareth Randall
Isn't this (3GB user mode) only supported on Windows NT Advanced Server? (which is probably free for you to use but for everyone else costs the same as a new car!) If it isn't then I've encountered some people who will wish they'd have known about this a long time ago :-) Paul Leyland wrote: Fr

Re: Mersenne: Has something gone wrong with the mersenne.org server?

2002-12-05 Thread George Woltman
At 01:22 PM 12/5/2002 +, Barry Stokes wrote: I tried to look at my personal stats today, and got this: "CGI Error The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are: Could not load ADVAPI32.dll" Has something gone wrong?

RE: Mersenne: P-1 and non k-smooth factors

2002-12-05 Thread Paul Leyland
> From: Brian J. Beesley [mailto:[EMAIL PROTECTED]] > usable by a single process is limited to 2 GBytes. (There is > a "big memory" > variant of the linux kernel which expands this to 3 GBytes, > but the point still stands). FWIW, WinNT and its descendents can be booted with /3gb in boot.ini,

Re: Mersenne: Linux kernels

2002-12-05 Thread Gareth Randall
I've seen a kernel config option to allow a 3GB-user / 1GB-kernel split, even on normal hardware, so you should definitely be able to reach 3GB on any CPU type. As for the 36-bit address extension, I haven't tried it but the following .config entries look relevant: # CONFIG_HIGHMEM4G is not set

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

Mersenne: Re: Linux kernels

2002-12-05 Thread Steinar H. Gunderson
On Thu, Dec 05, 2002 at 08:02:58AM -0800, Chris Marble wrote: > 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. Hmm, goo

Mersenne: Linux kernels

2002-12-05 Thread Chris Marble
Steinar H. Gunderson wrote: > > Actually, in newer Linux kernels (ie. at least all 2.4.x versions that I can > remember) you can expand this further, up to 64GB on CPUs that support it > (which is, AFAIK, Pentium Pro and newer, so in reality it won't be a > problem). I don't really know what it do

Mersenne: Has something gone wrong with the mersenne.org server?

2002-12-05 Thread Barry Stokes
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I tried to look at my personal stats today, and got this: "CGI Error The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are: Could not load ADVAPI32.dll" Has something gone wrong? -

Mersenne: Re: P-1 and non k-smooth factors

2002-12-05 Thread Steinar H. Gunderson
On Thu, Dec 05, 2002 at 12:31:00PM +, Brian J. Beesley wrote: > the entire _virtual_ address space is limited to 4 GBytes by the 32 bit > address bus, and the OS kernel claims some (usually half) of this, so that > the total memory usable by a single process is limited to 2 GBytes. (There > is

Re: Mersenne: P-1 and non k-smooth factors

2002-12-05 Thread Brian J. Beesley
On Wednesday 04 December 2002 21:46, Daran wrote: > [... snip ...] > > ...though I think there needs to be a > > careful analysis as to what the extra computation time for actual E > > values might be... > > I agree. My tests have been limited to exponents in the 8.1M range, for no > particular re

Re: Mersenne: P-1 and non k-smooth factors

2002-12-05 Thread Alexander Kruppa
George Woltman wrote: At 10:31 PM 12/3/2002 +, Daran wrote: The analysis is more complex than this. It really depends on the prime [...] I'd be greatly interested in such a study. Peter Montgomery's dissertation, "An FFT Extension to the Elliptic Curve Method of Factorization", ftp://