Re: [OMPI users] MPI-IO problem

2010-12-20 Thread Tom Rosmond
Rob, Thanks for the analysis. I have used your suggestions, but am still frustrated by what I am seeing. I too have run my tests on single node systems, and here is what I have done: 1. I modified the 'writeb' script to essentially mimic the example in section 7.9.3 of Vol 2 of MPI: The Comple

Re: [OMPI users] MPI-IO problem

2010-12-17 Thread Rob Latham
On Wed, Dec 15, 2010 at 01:21:35PM -0800, Tom Rosmond wrote: > I want to implement an MPI-IO solution for some of the IO in a large > atmospheric data assimilation system. Years ago I got some small > demonstration Fortran programs ( I think from Bill Gropp) that seem to > be good candidate protot

[OMPI users] MPI-IO problem

2010-12-15 Thread Tom Rosmond
I want to implement an MPI-IO solution for some of the IO in a large atmospheric data assimilation system. Years ago I got some small demonstration Fortran programs ( I think from Bill Gropp) that seem to be good candidate prototypes for what I need. Two of them are attached as part of simple she