You must be able to perform a remote login using the ssh -x command. You also need to enable remote logins by adding the host name of the remote node to the /etc/hosts.equiv file or to your .rhosts file.
When the program is using switch-based communications, MemoryScape tries to start the TotalView Server by using the ssh -x command with the switch host name of the node.
Setting Timeouts
If you receive communications timeouts, you can set the value of the MP_TIMEOUT environment variable; for example:
setenvMP_TIMEOUT1200
If this variable isn’t set, the default timeout value is 600 seconds.