When starting the MPI program, we use the command
mpiexec -hostfile ./conf/machines <my_mpi_program>
My host file ./conf/machines
192.168.1.54
192.168.1.55
192.168.1.56
192.168.1.57
And when I ran the MPI program, I got a processor rating MPI_Comm_rank.
My question is: how to get a pair of <rank, hostname>each rank?
hostnameshould match the hostfile i spcecified and i just want to use ipaddress as the hostname in the host file.
I tried using MPI_Get_processor_name, but it returned my host name teaker-4, not the name in the specified host file.
And also teaker-4there 127.0.0.1, and I can’t change/etc/hosts
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