CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Running CFX on a cluster

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   September 10, 2002, 09:40
Default Running CFX on a cluster
  #1
jvk
Guest
 
Posts: n/a
Hi,

Has someone managed to get CFX 5.5.1 running on a cluster on a license which is NOT connected to the master node but is running on an other machine on the network. Is this possible anyway? Regards, Jaap
  Reply With Quote

Old   September 10, 2002, 17:35
Default Re: Running CFX on a cluster
  #2
Astrid
Guest
 
Posts: n/a
What do you mean? Which environwment? Distributed parallel on PC1 (Master), PC2 (Slave) PC3 (Slave), and the license manager on PC4?

Astrid
  Reply With Quote

Old   September 11, 2002, 01:59
Default Re: Running CFX on a cluster
  #3
JvK
Guest
 
Posts: n/a
Exactly. And this PC4 is not contained in the cluster but is somewhere else in the network. Best regards, Jvk
  Reply With Quote

Old   September 11, 2002, 02:20
Default Re: Running CFX on a cluster
  #4
Astrid
Guest
 
Posts: n/a
Beste Jaap,

Maybe this sounds a little stupid, but what is the exact definition of a cluster. Which environment do you use? Unix, Linux, Irix, Windows....

Please describe the error/message you get.

Here we have several Win-PC's single CPU, several Win-PC's dual CPU and a dual linux PC. All connected in a 100bt-network . The license manager runs on the oldest and slowest PC. We can run in parallel over all Win PC's. Any Win-PC can be a master. We haven't been albe to distribute a run over linux and Windows. Does anyone have experience with that?

Astrid
  Reply With Quote

Old   September 11, 2002, 03:16
Default Re: Running CFX on a cluster
  #5
jvk
Guest
 
Posts: n/a
Beste Astrid,

We are running a cluster under Linux. The cluster consists of 1 master node, which is connected to the network, and 5 nodes which are 'behind' the master node. Each node is a dual AMD PC. We have problems with adding the nodes to the PVM-environment when running a distributed job. We wanted to make sure that this is not due to the fact that the license is not running on the master node, but somewhere else in the network. I would say that this should work, i.e. only the master node is able the check the license, the other nodes cannot check it because they cannot 'see' the network (they are behind the master). Best regards, Jaap
  Reply With Quote

Old   September 12, 2002, 16:45
Default Re: Running CFX on a cluster
  #6
Astrid
Guest
 
Posts: n/a
Beste Jaap,

I can't figure out what the problem is. Perhaps the info in the following thread might help:

http://www.cfd-online.com/Forum/cfx_....cgi?read=2186

Succes, Astrid
  Reply With Quote

Old   September 13, 2002, 18:31
Default Re: Running CFX on a cluster
  #7
Neale
Guest
 
Posts: n/a
We do this all the time. We have a linux cluster and the license server runs on a central HP box (not connected to the cluster) on the network. You only need to make sure that your cluster can see the CFX-5 installation and the license file so that the FlexLM stuff knows where to look for a license.

Neale.
  Reply With Quote

Old   September 15, 2002, 12:04
Default Re: Running CFX on a cluster
  #8
Robin
Guest
 
Posts: n/a
Hi Jaap,

Have you followed the instructions in the help documents correctly? For example, have you correctly set up the PVMhosts and hosts.ccl files?

Robin
  Reply With Quote

Old   September 15, 2002, 12:25
Default Re: Running CFX on a cluster
  #9
Cujo
Guest
 
Posts: n/a
Yes, we have no idea why it doesn't work anymore. It worked with the 'license-network-card' in the cluster-master. We've put this network-card into another PC on the network, and we were only able to run a job on the master, not distributed. However, when we put back the network-card into the master, still no distributed job can be run anymore... We've got no idea what has changed, probably something in the Linux-config, because reinstalling CFX didn't solve our problem. All the files you listed are correct. The only thing that seems strange to us, is that when starting pvmd from the command-line openen from the CFX-startmenu, we cannot add the different nodes to the pvm environment, due to "The value of the $PVM_ROOT environment variable on node1 is invalid (""). Use the absolute path to the pvm3/ directory.". This doesn't seem normal, does it?
  Reply With Quote

Old   September 19, 2002, 22:22
Default Re: Running CFX on a cluster
  #10
Robin
Guest
 
Posts: n/a
Check the path to PVM on each host in your PVMhosts file again.

Robin
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
CFX pressure in Simulations problem nasdak CFX 1 April 14, 2010 13:22
Interesting behavior when using LAM without ib rpi on an infiniband cluster OF 141 msrinath80 OpenFOAM Running, Solving & CFD 0 October 2, 2007 16:31
Fluent Vs CFX, density and pressure Omer CFX 9 June 28, 2007 04:13
PhD using CFX Rui CFX 9 May 28, 2007 05:59
CFX running problem Michael CFX 4 January 26, 2007 08:40


All times are GMT -4. The time now is 04:34.