[Beowulf] running out of rsh ports

[Joe Landman]

Dan Stromberg wrote:
> On Wed, 2006-05-03 at 12:16 -0500, Bruce Allen wrote:
>> rsh typically uses ports in the 513-1023 range.  With a 640 node cluster 
>> we are running out of ports.  This leads to messages such as:
>> "rcmd: socket: All ports in use"
>>
>> Are there any standard solutions to this other than 'use ssh'?  We already 
>> have net.ipv4.tcp_tw_recycle = 1 in /etc/sysctl.conf
> 
> http://dcs.nac.uci.edu/~strombrg/loop.html

Hmmm.... we use pdsh for our (customers) clusters.  Works quite well. 
Your example

	pdsh uname -a

does the same thing if it is setup right.


-- 

Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web  : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax  : +1 734 786 8452 or +1 866 888 3112
cell : +1 734 612 4615