I will double check the size of blocks in each node. Thanks a lot.
On Tue, Jun 29, 2010 at 9:53 PM, Jed Brown <jed at 59a2.org> wrote: > On Tue, Jun 29, 2010 at 20:48, Yujie <recrusader at gmail.com> wrote: >> >> Thank you very much! I am writing it in parallel mode. I am using >> MPICH not MPICH2. I don't know the mechanism in MatView. If I write in >> paralle, there is no communication between nodes? > > There is still communication with the (parallel) file system. ?I think there > should be no problem if the local blocks are smaller than 2 GiB but there > may be issues with larger blocks. ?MPICH1 is old and unsupported, you should > definitely upgrade unless you need support for a heterogeneous cluster (mix > of 32 and 64-bit or different endianness). > Jed
