Hi, are there any known problems with Open MPI (SVN rev. 9792) and Parallel NetCDF (version 1.0.1)?
I'm unable to make this combination work. The tests distributed with the source of pnetcdf fail when building with Open MPI. It looks as if the problem is not really due to Open MPI, but to the included ROM-IO: All tests fail with the same error message: For example, test/test_double/test_write shows: Testing write ... Error: Unsupported datatype passed to ADIOI_Count_contiguous_blocks [lts.mydomain.be:26763] [0,0,0] ORTE_ERROR_LOG: Not found in file ../../../../orte/mca/pls/base/pls_base_proxy.c at line 189 They do work with mpich2 (1.0.3). I didn't try updating the version of ROM-IO included in the Open MPI SVN repository [yet]. Greetings, Dries PS. pnetcdf also doesn't build with the lam 7.1.1, because of a missing MPI_Request_get_status implementation. Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
