[mpich-discuss] COMM_SELF and collective IO

burlen burlen.loring at gmail.com
Fri Oct 16 17:38:57 CDT 2009

I have an io code that uses the subarray type. I use the collective IO 
function, MPI_File_read_all. Now, I have a use case where each process 
needs to read independently of the others. What I am tempted to do is 
change the communicator to MPI_COMM_SELF and use the same code. I 
suspect that this is a bad idea. Is it?

More information about the mpich-discuss mailing list