MATLAB DISTRIBUTED COMPUTING SERVER 4 - SYSTEM ADMINISTRATORS GUIDE Manuale Utente Scaricare il pdf (Pagina 23)

Troubleshooting

Required Ports

Using a Job Manager

BASE_PORT. The mdce_def Þle speciÞes and describes the ports required

by the job manager and all workers. See the following Þle in the MATLAB

installation used for each cluster process:

• matlabroot/toolbox/distcomp/bin/mdce_def.sh (on UNIX operating

systems)

• matlabroot\toolbox\distcomp\bin\mdce_def.bat (on Windows

operating systems)

Parallel Jobs. On worker machines running a UNIX operating system, the

number of ports required by MPICH for the running of parallel jobs ranges

from BASE_PORT + 1000 to BASE_PORT + 2000.

Using a Third-Party Scheduler

Before the worker processes start, you can control the range of ports used

by the workers for parallel jobs by deÞning the environment variable

MPICH_PORT_RANGE with the value minport:maxport.

Client Ports

With the pctconfig function, you specify the ports used by the client. If

the default ports cannot be used, this function allows you to conÞgure ports

separately for communication with the job manager and communication with

pmode or a MATLAB pool.

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MATLAB DISTRIBUTED COMPUTING SERVER 4 - SYSTEM ADMINISTRATORS GUIDE Manuale Utente Pagina 23