David
This is likely an issue with your MPI configuration. Either Cactus didn't recognize that you are using MPI, or you are building Cactus with one MPI implementation and are then using mpirun from another MPI implementation.
If you want help diagnosing this, then you can open a ticket on trac.einsteintoolkit.org and attach your configure options, your thorn list, as well as the screen output from configure there.
-erik
On Mar 18, 2015, at 17:34 , Garrison, David Garrison@uhcl.edu wrote:
Hello,
Ever since I upgraded to Cactus 4.2.3, my code seems to have issues with MPI and PUGH. For example, when I perform an 8 processor run, I get 8 copies of full grid output instead of the 8 processors splitting up the grid and creating 1 output. This works with both the arrangements I wrote and WaveToy. Any ideas how to fix this?
-DG
-- David Garrison, Ph.D. Director of Graduate Programs for the School of Science and Computer Engineering, Associate Professor and Chair of Physics University of Houston-Clear Lake Bayou 3531 Houston, TX 77058
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