[torqueusers] What is the Maximum no of compute Nodes in torque

Ken Nielson knielson at clusterresources.com
Tue May 12 09:00:26 MDT 2009

I have been looking at the code to see if there is a hard limit set to the maximum number of nodes you can have but I do not see any. There is a limit of 1024 simultaneous connections but Torque uses a request reply protocol so each command sequence starts with a connect followed by an exchange of data and a closing of the socket. This may cause a bottleneck for large clusters but it in no way inhibits the number of nodes possible.

Ken Nielson
Cluster Resources

----- Original Message -----
From: "Jerry Smith" <jdsmit at sandia.gov>
To: "Rajiv Rajaian" <rajiv.care at gmail.com>
Cc: torqueusers at supercluster.org
Sent: Tuesday, May 12, 2009 8:01:11 AM GMT -07:00 US/Canada Mountain
Subject: Re: [torqueusers] What is the Maximum no of compute Nodes in torque


I am not sure of the defined Maximum #, but we currently have it scaled 
to ~4500 nodes (pbs_mom) to a single pbs_server on one of our clusters.


Rajiv Rajaian wrote:
> Hi
> Im using torque-2.0.0p8.
> What is the maximum no of the compute nodes that can be configured 
> with torque..
> Is there any configuration to limit the no of compute nodes that can 
> be configured..
> Thanks in Advance
> Rajiv
> Project associate,
> Anna university

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