Building Linux cluster for mechanical engineering software Post: 302918888

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Special Forums UNIX and Linux Applications High Performance Computing Building Linux cluster for mechanical engineering software Post 302918888 by Don Cragun on Friday 26th of September 2014 03:34:02 AM

09-26-2014

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Some of your questions are so vague that it is hard to make any informed suggestions. How would you respond if you got a request from someone to tell them how to choose the best vehicle? (Who is going to be driving it? How many passengers do you need to carry? How much weight do you need to be able to tow? How much secured cargo space do you need? What are the weather conditions where it will be driven? What type of terrain does it need to traverse? ...)

I know very little about about ME and nothing about Ansys CFD. Are you trying to build a cluster to support hundreds of users submitting thousands of jobs? Are you trying to build a cluster than can break a single huge job into thousands of threads and run all of those threads simultaneously? Do you have any experience writing thread-safe code?

Can you use only open-source software? Of course you can! You can write all of the code you need and make it available for everyone to use as they see fit.

Does open-source software already exist for all of the code you want to run? How can we guess at that from what you've told us? We have no idea what all of the code you want to run needs to do.

If you don't know the difference between a heterogeneous cluster and a homogeneous cluster, you probably don't have the background needed to design the cluster you want. Please consider hiring an architect with experience setting up and running an HPC data center who you can sit down with and discuss budget, capabilities, computing projects to be run, users to be supported, software to be run, software to be written, etc., etc., etc. Setting up an HPC data center is a very complex, expensive undertaking.

Don Cragun

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scversions

scversions(1M)						  System Administration Commands					    scversions(1M)

NAME

       scversions - Sun Cluster version management

SYNOPSIS

       scversions [-c]

DESCRIPTION

       Note -

	 Beginning  with  the Sun Cluster 3.2 release, Sun Cluster software includes an object-oriented command set. Although Sun Cluster software
	 still supports the original command set, Sun Cluster procedural documentation uses only the object-oriented command set. For more  infor-
	 mation about the object-oriented command set, see the Intro(1CL) man page.

       The  scversions	command  commits  the cluster to a new level of functionality after a rolling-upgrade to new Sun Cluster software. With no
       arguments, the scversions command prints a message indicating whether a commitment is needed.

OPERANDS

       The following operands are supported:

       -c	    Commit the set of nodes that are currently active members of the cluster to the highest possible level of functionality.

		    When you upgrade a node (either through upgrade to a new release of the product or by application of a patch) and boot it back
		    into  the  cluster, some of the internal protocols on that node might have to run at lower versions in order to cooperate cor-
		    rectly with other nodes in the cluster.  When the cluster is in this state, some administrative actions might be disabled  and
		    some new functionality introduced in the upgrade might be unavailable.

		    When  you  run  this  command once from any node after all nodes are upgraded, the cluster switches to the highest versions of
		    internal protocols possible. Assuming that all nodes have the same Sun Cluster software installed at that time, all new  func-
		    tionality becomes available and any administrative restrictions are removed.

		    If	a  node that has not been upgraded is an active member of the cluster at the time you run the -c option to scversions, the
		    command has no effect because the cluster is already running at the highest possible level of functionality.

		    If a node has not been upgraded and is not an active member of the cluster when you run the -c option to scversions (for exam-
		    ple,  if  that  node is down for maintenance), the internal protocols of the cluster are upgraded to the highest possible ver-
		    sions.  You might have to upgrade the node that was not an active member of the cluster to enable it to rejoin the cluster.

EXIT STATUS

       0	    Success

       non-zero     Failure

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsczu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       scinstall(1M)

Sun Cluster 3.2 						    17 Aug 2007 						    scversions(1M)