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R2007b

16-2

New Parallel for-Loops (parfor-Loops)

New parallel for-loop (parfor-loop) functionality automatically executes a loop body

in parallel on dynamically allocated cluster resources, allowing interleaved serial and

parallel code. For details of new parfor functionality, see Parallel for-Loops (parfor) in the

Distributed Computing Toolbox™ documentation.

Limitations

P-Code Scripts

You can call P-code script files from within a parfor-loop, but P-code script cannot

contain a parfor-loop.

Compatibility Considerations

In past releases, parfor was a different function. The new parfor uses parentheses in

defining its range to distinguish it from the old parfor.

New parfor:

parfor (ii = 1:N); <body of code>; end;

Old parfor:

parfor ii = 1:N; <body of code>; end;

For this release, the old form of parfor without parentheses is still supported,

although it generates a warning. You can read more about the new form of this existing

functionality in Using a for-Loop Over a Distributed Range (for-drange). You should

update your existing parfor code to use the new form of for-loops over a distributed

range (for-drange), thus,

for ii = drange(1:N); <body of code>; end;

Configurations Manager and Dialogs

This release introduces a new graphical user interface for creating and modifying user

configurations, and for designating the default configuration used by some toolbox

functions. For details about the configurations manager, see Cluster Profiles in the

Distributed Computing Toolbox documentation.

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MATLAB PARALLEL COMPUTING TOOLBOX 4 Guida Utente Pagina 114