Connecting two raspberry

[mgonline]

Goodmorning guys... I have a problem with my two raspberry that i have connected.

I downloaded mpich that i have compiled and installed without problems and all work like a charm.

I have correctly set all the parameters to use ssh but when i go to launch the pyton test the connection between two raspberry i get this results:


Can anyone help me?

[DougieLawson]

Have you stored the public keys (made with ssh-keygen) in ~/.ssh/authorized_keys on each node of your cluster?

ssh-copy-id pi@node1
Run for each ID on each node to copy to all other nodes will do that.

[mgonline]

TY bro the problem was that I had not stored the access key even on the raspberry master.

Now... My cluster work and i tested the system with small python script like hello world or similar.

But if i want use mpich for run compiled programs?

[DougieLawson]

At least one of Dr. Google's results at: https://www.google.co.uk/search?q=mpich+raspberry should explain that for you. My playtime with mpich didn't get much further than running a script (stored on a shared drive) on about four of my Raspberries.