MATLAB PARALLEL COMPUTING TOOLBOX - S Guida Utente Scaricare il pdf (Pagina 254)

8 Program Communicating Jobs

8-8

Use createCommunicatingJob to create a communicating job object for your

cluster.

Create a task, run the job, and retrieve the results as usual.

Supplied Submit and Decode Functions

There are several submit and decode functions provided with the toolbox for your use

with the generic scheduler interface. These files are in the folder

matlabroot/toolbox/distcomp/examples/integration

In this folder are subfolders for each of several types of scheduler.

Depending on your network and cluster configuration, you might need to modify these

files before they will work in your situation. Ask your system administrator for help.

At the time of publication, there are folders for PBS (pbs), and Platform LSF (lsf)

schedulers, generic UNIX-based scripts (ssh), and Sun Grid Engine (sge). In addition,

the pbs, lsf, and sge folders have subfolders called shared, nonshared, and

remoteSubmission, which contain scripts for use in particular cluster configurations.

Each of these subfolders contains a file called README, which provides instruction on

where and how to use its scripts.

For each scheduler type, the folder (or configuration subfolder) contains wrappers,

submit functions, and other job management scripts for independent and communicating

jobs. For example, the folder matlabroot/toolbox/distcomp/examples/

integration/pbs/shared contains the following files for use with a PBS scheduler:

Filename Description

independentSubmitFcn.m Submit function for an independent job

communicatingSubmitFcn.m Submit function for a communicating job

independentJobWrapper.sh Script that is submitted to PBS to start workers that

evaluate the tasks of an independent job

communicatingJobWrapper.shScript that is submitted to PBS to start workers that

evaluate the tasks of a communicating job

deleteJobFcn.m Script to delete a job from the scheduler

extractJobId.m Script to get the job’s ID from the scheduler

getJobStateFcn.m Script to get the job’s state from the scheduler

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