mpich2-0.93

Chris Samuel csamuel at vpac.org
Tue Aug 26 20:34:38 EDT 2003


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On Wed, 27 Aug 2003 06:50 am, Russell Nordquist wrote:

> Can you "rsh node1" or "ssh node1" and not be prompted? If not you need to
> setup password-less rsh (usaully .rhosts) or ssh. You can tell which one
> mpirun (or change it) is using by the value of RSHCOMMAND (at least in
> the 1.2 version) in mpirun.

Standard security blah - rsh is evil, ssh is your friend. :-)

It is possible to not install rsh, rlogin and rcp and replace them with 
symbolic links to ssh, slogin and scp.

This should work for most cases, but of course, test, test and test again.

We were fortunate, although we had installed the r-series clients on our 
cluster the daemons weren't enabled in inetd, so we knew we couldn't break 
anything by removing them (as they'd never have worked in the first place).

So far not found anything that has a problem because of this - although don't 
nuke users .rhosts files as some other programs, like PBS, call ruserok() to 
validate connections!

cheers,
Chris
- -- 
 Christopher Samuel - (03)9925 4751 - VPAC Systems & Network Admin
 Victorian Partnership for Advanced Computing http://www.vpac.org/
 Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia

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