[mpich2-dev] A Question about romio-hints.

["Kwangho CHA"]

Dear All.

I've interested in the effect of the aggregators in collective I/O and tried to change aggregator nodes using "/etc/romio-hints" file.

However, my MPI program was terminated abnormally, when I described "/etc/romio-hints", as follow;

 cb_config_list compute-0-0.local,compute-0-1.local,compute-0-2.local,compute-0-3.local

Instead of this line, I also described "cb_config_list *:1", but it showed the same result.

When I comment out the line of the romio-hints file, my MPI program works well.

What should I check first?

My system consists of mpich2-1.0.8p1 and pvfs-2.8.1. 

Thanks.

Kwangho CHA


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