On Tue, Jun 29, 2010 at 20:48, Yujie <span dir="ltr"><<a href="mailto:recrusader@gmail.com">recrusader@gmail.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Thank you very much! I am writing it in parallel mode. I am using<br>
MPICH not MPICH2. I don't know the mechanism in MatView. If I write in<br>
paralle, there is no communication between nodes?<br></blockquote><div><br></div><div>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).</div>
<div><br></div><div>Jed</div></div>