On my last email...
I forgot to add It's a 12Gb machine and the file should be around 2.5Gb I'm using mpirun -np 1 And it writes without problem if I try a file of 250Mb, for instance so it seems also to be a size related problem I'm using the 'native' type for writing... ideas? Ricardo Reis 'Non Serviam' PhD candidate @ Lasef Computational Fluid Dynamics, High Performance Computing, Turbulence http://www.lasef.ist.utl.pt Cultural Instigator @ Rádio Zero http://www.radiozero.pt Keep them Flying! Ajude a/help Aero Fénix! http://www.aeronauta.com/aero.fenix http://www.flickr.com/photos/rreis/ contacts: gtalk: kyriu...@gmail.com skype: kyriusan < sent with alpine 2.00 >