MPI安装步骤

MPICH setup

1. install same(not must) Linux OS on 2 or more computer

2. config ssh: master computer should be able to ssh login slave computer without passwd:

   1. run "ssh-keygen -t rsa" on master computer
   2. scp ~/.ssh/id_rsa.pub 192.168.188.130:/home/genesis
   3. ssh 192.168.188.130 -l genesis
   4. cat /home/genesis/id_rsa.pub >> ~/.ssh/authorized_keys
3. scp -r ~/mpich-install 192.168.188.130:/home/genesis
4. scp /etc/hosts 192.168.188.130:/home/genesis (make sure both server and client have both server and client hostname)
5. scp ~/cpi 192.168.188.130:/home/genesis
6. add /home/genesis/mpich-install/bin to .bashrc on both server and slave computer
7. mpiexec -n 5 -f machinefile ./cpi

How to make mpich

./configure --prefix=<mpi install location>
make
make install