I am implementing a simple mpi code. I am using Oracle Virtual box and have
created two Ubuntu vm's one named master and the other named slave.
Both are connected and can successfully ping each other
I have followed following step I will describe them one by one.
Steps
I created a folder in the master
sudo mkdir /mirror
This folder is mounted in the slave using nfs-server(master) and nfs-client(slave)
So whatever file I make in master shows up in the slave aswell.
Then I make user 'mpi' in both master and slave using sudo adduser --home /mirror --uid 1100 mpi command
I log into the mpi user from master and and generate public and private keys using the following command
ssh-keygen -t rsa which creates .ssh directory in /mirror/.ssh
now because both master and slave share /mirror I go inside /mirror/.ssh via loged in from master in mpi
cat id_rsa.pub>>authorized_keys pasting the public key which shows up in slave aswell.
Then I run ssh slave (I can do that becuase I have edited /etc/hosts). This is successful and I get text based interface to slave's shell.
Then in master I run a simple mpi code and I get the following error
Some other information that I think I should tell
/etc/hostname for master is set to master and for slave is set to slave
the id_rsa.pub file ends with mpi@appleconda-VirtualBox
the sshd_config file properties are
PermitRootLogin prohibit-password
If you need to know anything else I will tell. I have been stuck on this error for a very long time now. Grateful for help.
ssh -v -v -v mpi@slaveto see what the problem is at the ssh level.