>There is a whole chapter in the MPI standard about file I/O operations. I'm quite confident you will find whatever you're looking for there :)
Hi George, i know this chapter :) But i'm using MPI-1, not MPI-2. I would like to know methods for I/O with MPI-1. 2008/7/23 George Bosilca <bosi...@eecs.utk.edu>: > There is a whole chapter in the MPI standard about file I/O operations. I'm > quite confident you will find whatever you're looking for there :) > > Open MPI use ROMIO for file operations, and normally this is compiled in by > default. You should not have any troubles using MPI I/O with Open MPI. > > Have fun, > george. > > > On Jul 23, 2008, at 11:51 AM, Gabriele Fatigati wrote: > > >> Hi, >> i have a question about parallel i/o. In my application, actually i have >> implemented a file lock with C system calls, like flock. But, is this the >> right way to do concurrent write? >> >> In this cluster, every node has our operating system, so, the file lock >> functions only on the processors of that node, not for all. I can have two >> or more process of different nodes that writes concurrent in the file. Is >> this dangerous or not? It's depends by file system? I'm using MPI-1 under >> OpenMPI. >> >> Thanks. >> -- >> Gabriele Fatigati >> >> CINECA Systems & Tecnologies Department >> >> Supercomputing Group >> >> Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy >> >> www.cineca.it Tel: +39 051 6171722 >> >> g.fatig...@cineca.it >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- Gabriele Fatigati CINECA Systems & Tecnologies Department Supercomputing Group Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy www.cineca.it Tel: +39 051 6171722 g.fatig...@cineca.it
