It seems to be a good idea. I have another related question. If all processors read the same file at the same time, would it be very slow for conflicting access?
On Mon, Nov 19, 2012 at 4:52 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote: > On Tue, Nov 20, 2012 at 12:38 AM, Fande Kong <fd.kong at siat.ac.cn> wrote: > >> I want to try very 'large' mesh. I guess it should be bottleneck. > > > It's really worth profiling. Having every process read directly is no more > scalable (frequently less, actually) than having rank 1 read incrementally > and send to whoever should own it. You can do full parallel IO, but the > code depends on the mesh format. > -- Fande Kong ShenZhen Institutes of Advanced Technology Chinese Academy of Sciences -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20121119/95b16311/attachment.html>
