settings; copy its output and paste it into your terminal window (you can do
this easily with the following commands:
ssh-agent –s >ssh_ebbe.del
chmod 700 ssh_ebbe.del
./ssh_ebbe.del
rm ssh_ebbe.del
This will set environmental variables for ssh-agent to work correctly. Now we
need to tell ssh-agent to use the private key, thus type: “ssh-add” (and type
your password when asked). Now you can try to log in to each of the client
nodes by e.g., “ssh mmac0x.local” and the system should not ask you for a
password (you may need to do that twice so the respective system’s key is
added to you “known hosts” file).
8. (S10.4) The last thing to do is to start LAM-MPI, type: “lamboot –v –ssi
boot rsh hostfile.lam
”. This will start your LAM-MPI (lamd daemons)
on all the machines included in hostfile.lam.
9. (S10.4) Place and start your LAM-MPI programs from /NetCommon just like
you did with Open-MPI. Make sure files and directories have proper access
rights.
If the S10.4 computer has been rebooted, you will need to repeat from Step 7 to get
LAMMPI working again.
7. Setting up MPICH2
Setting up MPICH2 is similar to setting up LAM-MPI. Make sure you have gcc and
gofortran (you should if you have followed instructions in the OpenMPI installation
section). Just like in the previous section we cannot easily separate instructions into two
separate subsections, thus in the beginning of each step we will say which computers they
need to be applied on. Please read the introduction of Section 6 carefully.
1. On the S10.4: download the MPICH2 source from [8]. Become superuser (“su
–
” and untar the source into its own directory. Configure, make, install, and
create an archive of mpich2:
mkdir /usr/local/mpich2/
cd mpich2-*
./configure --enable-f90 --prefix=/usr/local/mpich2 | tee
configure.log
make | tee make.log
make install
cd /usr/local/mpich2
tar –cvzf mpich2binaries.tgz /usr/local/mpich2
mv mpich2binaries.tgz /NetCommon
2. On all C10.4-s: copy and extract the archive as root:
sudo su -
cp /NetCommon/mpich2binaries.tgz /
cd /
tar –xvzf mpich2binaries.tgz
rm mpich2binaries.tgz
Add the binaries into the local search path similarly to that in Step 3 of
Section 6, except use “/usr/local/mpich2/bin” as the path.
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