[mpich-discuss] Fatal error in PMPI_Reduce

[Pavan Balaji]

On 01/11/2013 09:18 PM US Central Time, Michael Colonno wrote:
> The first output below is from cxxcpi; I can also run cpi is it's helpful.

Ah, sorry, I didn't realize you were in fact running one of the test
programs distributed in MPICH.

Based on the error, some of the nodes are not able to connect to each
other based on the hostnames they are publishing.  Did you try the
solutions listed on the FAQ:

http://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_My_MPI_program_aborts_with_an_error_saying_it_cannot_communicate_with_other_processes

 -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji