Re: [OMPI users] nonblocking MPI_File_iwrite() does block?

2009-11-27 Thread Christoph Rackwitz
Rob Latham wrote: If the other processors need header data, perhaps rank 0 can broadcast it to everyone else? That's what happens, when *reading* that file back to continue number-crunching. When writing, rank 0 is also the only one to write a header, and then each rank writes their parts of

Re: [OMPI users] nonblocking MPI_File_iwrite() does block?

2009-11-23 Thread Christoph Rackwitz
Rob Latham wrote: The standard in no way requires any overlap for either the nonblocking communication or I/O routines. There are long and heated discussions about "strict" or "weak" interpretation of the progress rule and which one is "better". Unfortunate. But with your "official" statement,

Re: [OMPI users] nonblocking MPI_File_iwrite() does block?

2009-11-16 Thread Christoph Rackwitz
It's been ten days now. I'd like to resurrect this, in case someone can help and just missed it. Thanks, Christoph Rackwitz Student Assistant High Performance Computing Group Center for Computing and Communication RWTH Aachen University

[OMPI users] nonblocking MPI_File_iwrite() does block?

2009-11-06 Thread Christoph Rackwitz
-blocking MPI I/O to work as expected? Thanks, Christoph Rackwitz Student Assistant High Performance Computing Group Center for Computing and Communication RWTH Aachen University ompi_info_dump.txt.bz2 Description: Binary data #include #include #include #include #include char *outfi