Re: [OMPI users] questions about MPI-IO

2011-01-06 Thread Tom Rosmond
Rob, Thanks for the clarification. I am using a old school solution to the problem, namely with a little 12 line subroutine that simply reverses the order of the bytes in each floating point word. Before fortran compilers supported 'byteswapping', this was the way we did it, and it still does th

Re: [OMPI users] questions about MPI-IO

2011-01-06 Thread Rob Latham
On Tue, Dec 21, 2010 at 06:38:59PM -0800, Tom Rosmond wrote: > I use the function MPI_FILE_SET_VIEW with the 'native' > data representation and correctly write a file with MPI_FILE_WRITE_ALL. > However, if I change to the 'external32' representation, the file is > truncated, with a length that sugg

[OMPI users] questions about MPI-IO

2010-12-21 Thread Tom Rosmond
I have been experimenting with some simple fortran test programs to write files with some of the MPI-IO functions, and have come across a troubling issue. I use the function MPI_FILE_SET_VIEW with the 'native' data representation and correctly write a file with MPI_FILE_WRITE_ALL. However, if I ch