# MaxNumParallel

The maximum number of threads that a single training action can use.

You can set this parameter in several sections of the configuration file. For example, if you set this parameter in the `[BuildClassifier]` section, it specifies the maximum number of threads that a single BuildClassifier action can use. If you set this parameter in the `[BuildObject]` section it specifies the maximum number of threads that a single BuildObject action can use.

The total number of threads that Media Server can use for running training actions of a specific type is the value of MaximumThreads for the relevant action, multiplied by the value of this parameter for the relevant action.

Type: | Integer
Default: | 1
Required: | No
Configuration Section: | BuildAllFaces BuildAllObjects BuildAllVehicleModels BuildClassifier BuildFace BuildObject BuildVehicleModel TrainFace TrainObject TrainVehicleModel
Example: | In the following example, each BuildAllFaces action can use up to 4 threads. The MaximumThreads parameter specifies that only one BuildAllFaces action can run simultaneously, so Media Server does not use more than 4 threads for running BuildAllFaces actions. Each BuildClassifier action can use up to 8 threads. The MaximumThreads parameter specifies that up to two BuildClassifier actions can run simultaneously, so Media Server uses up to 16 threads for training object classifiers.
    [BuildAllFaces]
    MaxNumParallel=4
    MaximumThreads=1

    [BuildClassifier]
    MaxNumParallel=8
    MaximumThreads=2
See Also: |

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