BUILT-IN MATHEMATICA SYMBOL
Parallelization
Parallelization
is an option for Compile that specifies whether it should create a compiled function that could run in parallel.
- Parallelization applies to the execution of the compiled function.
- Compiled functions only run in parallel if Listable is one of the RuntimeAttributes and the function threads over list arguments.
- Compiled functions run in parallel using multiple threads of execution.
- Typically, $ProcessorCount is used to determine how many threads are used.
- If a compiled function running in parallel has several threads trying to call ordinary Mathematica code, only one thread can do this at any time.
- The following settings can be used:
-
| True | create parallel code |
| False | create single-thread code |
| Automatic | use parallelization for optimal arguments |
Listable compiled functions can execute in parallel:
| Out[1]= |  |
This shows the operation running sequentially:
| Out[2]= |  |
Typically, $ProcessorCount is used to determine how many threads can be used:
| Out[3]= |  |
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