This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.


Total number of workers operating in parallel on current job


n = numlabs


n = numlabs returns the total number of workers currently operating on the current job. This value is the maximum value that can be used with labSend and labReceive.


In an spmd block, numlabs on each worker returns the parallel pool size.

However, inside a parfor-loop, numlabs always returns a value of 1.

Introduced before R2006a