Hello Tom, like MPIch2, Open MPI also uses ROMIO as underlying MPI-IO implementation as an mca. ROMIO implements the native datarep.
With best regards, Rainer On Friday 05 January 2007 20:38, l...@cora.nwra.com wrote: > Hi, > I am attempting to use the 'external32' data representation in order > read and write portable data files. I believe I understand how to do > this, but I receive the following run-time error from the > mpi_file_set_view call: > > MPI_FILE_SET_VIEW (line 118): **unsupporteddatarep > > If I replace 'external32' with 'native' in the mpi_file_set_view call then > everything works, but the data file is written in little endian order on > my Opteron cluster. Just for grins I also tried 'internal' but this > produces the unsupporteddatarep error as well. > > Is the 'external32' data type implemented? Do I need to do something else > to access it? I looked in the FAQs as well as the mailing list archives > but I can not seem to find any threads discussing this issue. I would > greatly appreciate any advice. > > I have attached my sample fortran codes (explicit_write.f, > explicit_read.f, Makefkile) as well as the config.log, output of > ompi_info, and my environment variable settings. I am running Fedora Core > 4 with the 2.6.17-1.2142_FC4smp kernel. > > Thanks, > > ---Tom -- ---------------------------------------------------------------- Dipl.-Inf. Rainer Keller http://www.hlrs.de/people/keller High Performance Computing Tel: ++49 (0)711-685 6 5858 Center Stuttgart (HLRS) Fax: ++49 (0)711-685 6 5832 POSTAL:Nobelstrasse 19 email: kel...@hlrs.de ACTUAL:Allmandring 30, R.O.030 AIM:rusraink 70550 Stuttgart
