Re: [OMPI users] Optimal 3-D Cartesian processor mapping

2012-04-24 Thread Jeffrey Squyres
On Apr 24, 2012, at 3:33 PM, Tom Rosmond wrote: > Yes, I would be interested in such a plugin. But be advised that I am > strictly a fortran programmer, so if it requires any C/C++ talent, I > would be in trouble. So maybe, before jumping into that, I would like > to be able to look at what

Re: [OMPI users] Optimal 3-D Cartesian processor mapping

2012-04-24 Thread Tom Rosmond
Will do. My machine is currently quite busy, so it will be a while before I get answers. Stay tuned. T. Rosmond On Tue, 2012-04-24 at 13:36 -0600, Ralph Castain wrote: > Add --display-map to your mpirun cmd line > > On Apr 24, 2012, at 1:33 PM, Tom Rosmond wrote: > > > Jeff, > > > > Yes, I

Re: [OMPI users] Optimal 3-D Cartesian processor mapping

2012-04-24 Thread Ralph Castain
Add --display-map to your mpirun cmd line On Apr 24, 2012, at 1:33 PM, Tom Rosmond wrote: > Jeff, > > Yes, I would be interested in such a plugin. But be advised that I am > strictly a fortran programmer, so if it requires any C/C++ talent, I > would be in trouble. So maybe, before jumping

Re: [OMPI users] Optimal 3-D Cartesian processor mapping

2012-04-24 Thread Tom Rosmond
Jeff, Yes, I would be interested in such a plugin. But be advised that I am strictly a fortran programmer, so if it requires any C/C++ talent, I would be in trouble. So maybe, before jumping into that, I would like to be able to look at what processor/node mapping Open-mpi is actually giving

[OMPI users] Optimal 3-D Cartesian processor mapping

2012-04-24 Thread Tom Rosmond
We have a large ensemble-based atmospheric data assimilation system that does a 3-D cartesian partitioning of the 'domain' using MPI_DIMS_CREATE, MPI_CART_CREATE, etc. Two of the dimensions are spacial, i.e. latitude and longitude; the third is an 'ensemble' dimension, across which subsets of