Documentation Center

  • Trials
  • Product Updates


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.

More About

expand all


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.

See Also


Was this topic helpful?