Re: confused about performance

2007-06-15 Thread Giacomo Mulas
On Thu, 14 Jun 2007, M. Edward (Ed) Borasky wrote: All of these provide vastly better performance than the current incarnations of ATLAS in 64bit. How recent is your data? I was under the impression that Atlas had caught up with GOTO and ACML, and possibly even the Intel libraries on the Core

Re: IA-32 libraries

2007-06-15 Thread Goswin von Brederlow
Irene Laiz [EMAIL PROTECTED] writes: Dear all, I'm new to Linux. I've just installed Debian 4.0 on a server based on EA64T architecture. When trying to install the Intel Fortran Compiler, the installation fails because the IA-32 version of the following libraries cannot be found: libstdc++

Re: IA-32 libraries

2007-06-15 Thread Jo Shields
On Fri, 2007-06-15 at 11:01 +0200, Goswin von Brederlow wrote: Irene Laiz [EMAIL PROTECTED] writes: Dear all, I'm new to Linux. I've just installed Debian 4.0 on a server based on EA64T architecture. When trying to install the Intel Fortran Compiler, the installation fails because the

Re: IA-32 libraries

2007-06-15 Thread Simone Crippa
Hej, you can find a well written description on how to install the Intel compilers on Debian here: http://www.theochem.uwa.edu.au/fortran/intel_on_debian The scripts given there fail to correct all stages of the .deb post-installation procedure, but as far as I can see, the only problem is

Re: confused about performance

2007-06-15 Thread M. Edward (Ed) Borasky
Giacomo Mulas wrote: Two or three months, when I last compiled the latest version of the big quantum chemistry code (NWChem) I use (which spends a lot of time doing floating point linear algebra). The computer on which I tested is a relatively old Athlon 64 3500+, your mileage may vary on

Re: confused about performance

2007-06-15 Thread Giacomo Mulas
On Fri, 15 Jun 2007, M. Edward (Ed) Borasky wrote: had very deep pipelines. If NWChem is anything like that, I'm not surprised the Intel compilers do a better job than GCC -- I don't think GCC knows much about all the specifics of tweaking such things as keeping data in caches, re-use,

Re: confused about performance

2007-06-15 Thread Marco Maske
M. Edward (Ed) Borasky wrote: On Wed, Jun 13, 2007 at 04:40:52PM -0600, Sebastian Kuzminsky wrote: Hi folks, I just bought a pair of AMD64 systems for a work project, and I'm confused about the performance I'm getting from them. Both are identically configured Dell Dimension C521

Re: confused about performance

2007-06-15 Thread Douglas Allan Tutty
On Fri, Jun 15, 2007 at 06:50:57AM -0700, M. Edward (Ed) Borasky wrote: I wouldn't throw away that Intel compiler just yet. For that matter, I'd give serious consideration to switching to a Core 2 Duo and a copy of Intel's tuning tools ... they are quite good. Life's too short to wait for

Re: confused about performance

2007-06-15 Thread M. Edward (Ed) Borasky
Douglas Allan Tutty wrote: On Fri, Jun 15, 2007 at 06:50:57AM -0700, M. Edward (Ed) Borasky wrote: I wouldn't throw away that Intel compiler just yet. For that matter, I'd give serious consideration to switching to a Core 2 Duo and a copy of Intel's tuning tools ... they are quite good.