On Mar 5, 2008, at 1:07 PM, Samir Faci wrote:
the search seems easy enough to parallelize, but I would need to do
the image analysis split among processors. Would there be any
problems with having MPI initiated and finalized within a class?
The only restriction is that you can only initia
Ok, I think I found the cause of the SPARC segv when trying to use a
64-bit compiled Open MPI library. If one does not set the WHATMPI
variable in the Bmake.inc it defaults to UseF77Mpi which assumes all
handles are ints. This is a correct assumption if you are using the F77
interfaces but th
Sorry for the long delay in response.
Let's get back to the beginning:
My original compiler configuration was gcc from the standard Leopard
Developer Tools supplied off the installation DVD. This version was
4.0.1. However, it has been significantly modified by Apple to work
with Leopard. I
Greg,
I would disagree with your statement that the available fortran
options can't pass a cost-benefit analysis. I have found that for
scientific programming (e.g., Livermore Fortran Kernels and actual
PDE solvers) that code produced by the intel compiler runs 25 to 55%
faster than code
Ralph, here is Moe's response. The srun options he mentions look
promising: they can signal an otherwise happy orted daemon (sitting on a
waitpid) that something is amiss elsewhere in the job. Do orteds change
their session ID?
Thanks Moe,
Federico
-Original Message-
From: jet...@llnl.gov
On Mar 6, 2008, at 12:49 PM, Doug Reeder wrote:
Greg,
I would disagree with your statement that the available fortran
options can't pass a cost-benefit analysis. I have found that for
scientific programming (e.g., Livermore Fortran Kernels and actual
PDE solvers) that code produced by the
> Intel ifort is 7.7x faster then Linux g95 on MacPro 3.0 GHz
> Intel ifort is 2.9x faster then Linux g95 on Dual Opteron 1.4 GHz
> Intel ifort is 1.8x faster then Linux g95 on SGI Altix 350 dual
> Itanium2 1.4 GHz
> OS X g95 is 2.7x faster then Linux g95 on a MacPro 2.66 GHz (same
> hardwa
All,
I really didn't want to start a new thread discussing the virtues and
vices of every compiler, since this is hardly my forte and the
opportunity to offend someone is fairly high, whilst making myself
look clownish
What I should have said was that "for my organization one cannot
ju
