Rocks 5.4 Rsh Connection Refused for Fluent 6.3
I am new to CFD and for linux. I have a 8 node machine. I was advised that I should install a cluster software for performing fluent 6.3 version in parallel.
I have installed rocks 5.4 on the frontend and subsequently installed on all the 8 nodes. I have checked the interconnectivity with ganglia and all the nodes are up.
I have then installed on fluent 6.3.26 on the frontend. when I run fluent in parallel i get rsh connection refused error.
I have researched a bit on that on internet and found that by default rsh is disabled in rocks and need to be enabled. I have setup a .rhosts file, hosts.equiv file, changed the settings in pam.d directory, installed rsh server, disabled firewall. Still the fluent does not work. I have even tried rsh on the bash prompt. still the same error. initially the error says that krb5 is refused, the krb4 is refused then normal rlogin is refused.
I have tried ssh it works fine with password. i linked rsh and ssh by ln command. still i get connection refused. When I try rsh from the nodes to the frontend somehow it works. again between nodes rsh doesnot work.
please suggest what I am supposed to do. Any other cluster software which is a bit user friendly. I am more interested in running fluent than working on the operating system.
I am facing same problem as u, but i change the script to use ssh instead of rsh, i.e. add -ssh in your fluent command script to run job using ssh. in this way my job runs smoothly & got the results.
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