Intel Dual core machines

[Julian]

Hi,

The link to mpich1 says this:

MPICH.NT is no longer being developed.  Please use  MPICH2. MPICH.NT and
MPICH2 can co-exist on the same machine so it is not necessary to uninstall
MPICH to install MPICH2. But applications must be re-compiled with the
MPICH2 header files and libraries. 

So, is it ok if I use mpich2? 

Thanks,
Julian.

> -----Original Message-----
> From: owner-petsc-users at mcs.anl.gov 
> [mailto:owner-petsc-users at mcs.anl.gov] On Behalf Of Satish Balay
> Sent: Thursday, August 24, 2006 10:54 AM
> To: petsc-users at mcs.anl.gov
> Subject: Re: Intel Dual core machines
> 
> If you plan to use windows recommend mpich1 as this is what 
> PETSc is usually tested with [as far as installation is concerned].
> 
> http://www-unix.mcs.anl.gov/mpi/mpich1/mpich-nt/
> 
> Configure will automatically look for it - and use it.
> 
> The scalability depends upon the OS, MPI impl and 
> MemoryBandwidh numbers for this hardware. Don't know enough 
> about the OS & MPI part - but the MemoryBandwidh part is easy 
> to check based on the hardware you have. [The new core duo 
> chips appear to have high memory bandwidth numbers - so I 
> think it should scale well]
> 
> But you should be concerned about this only for performance measurents
> - but not during development. [You can install MPI on a 
> single cpu machine and use PETSc on it - for development]
> 
> Satish
> 
> On Thu, 24 Aug 2006, Julian wrote:
> 
> > Hello,
> > 
> > So far, I have been using PETSc on a single processor 
> windows machine. 
> > Now, I am planning on using it on a Intel Dual core 
> machine. Before I 
> > start running the installation scripts, I wanted to confirm 
> if I can 
> > use both the processors on this new machine just like how you would 
> > use multiple processors on a supercomputer.
> > If yes, is there anything special that I need to do when 
> installing PETSc? 
> > I'm guessing I would have to install some MPI software... 
> Which one do 
> > you recommend for windows machines (I saw more than one windows MPI 
> > software on the PETSc website) ?
> > 
> > Thanks,
> > Julian.
> > 
> > 
>