MATLAB DISTRIBUTED COMPUTING SERVER 4 - SYSTEM ADMINISTRATORS GUIDE Manuel d'utilisateur télécharger pdf (Page 46)

2 Netw ork Administration

With Command-Line Interface

First, be sure that the machines in question agree on their IP resolutions. The

IP address for a particular host should be the same for itself as it is from the

perspective o f a nother host. For exam ple, if a process on

hostB cannot connect

to one on

hostA,findoutthehostA IP address for itself, then see what the IP

address for

hostA is from hostB. They should be the same.

If the machines can identify each other, the

nodestatus command can be

useful for diagnosing problems between their processes. Use the function to

determine what MDCS processes are running on the local host, and which

are accessible from remote hosts. If a worker on

hostA cannot register with

its job manager on

hostB,runnod estatus on both hosts to see what each

can see on

hostB.

hostB,execute:

nodestatus -remotehost hostB

Then on hostA, run exactly the same command:

nodestatus -remotehost hostB

The results should be the same, showing the same listing of job managers

and workers.

If the output indicates problems, run the command again with a higher

information level to receive more detailed information:

nodestatus -remotehost hostB -infolevel 3

With Admin Center GUI

You can diagnose some communications problems using Admin Center.

If you cannot successfully add hosts to t h e listing by specifying hos t name,

you can use their IP addresse s in stea d (see “Add Hosts” on page 4-3). I f

you suspect any communications problems, in the Admin Center GUI click

Test Connectivity (see “Test Connectivity” on page 4-11). This testing

verifies that the nodes can identify e ach othe r and allow the ir processes to

communicate with each other.

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MATLAB DISTRIBUTED COMPUTING SERVER 4 - SYSTEM ADMINISTRATORS GUIDE Manuel d'utilisateur Page 46