Intel Dual core machines

[Satish Balay]

mpich2 is also not being developed anymore [on windows]. Either should
work. 

[but I'm more familer with mpich1 - if you encounter issues]

Satish

On Thu, 24 Aug 2006, Julian wrote:

> 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.
> > > 
> > > 
> > 
> 
>