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## Setting the number of processors

The number of processors determines how many processors are used by VisIt's compute engine. Generally, a higher number of processors yields higher performance but it depends on the host platform and the database being visualized. The Num procs text field initially contains the number of processors used in the active host profile but you can change it by typing a new number of processors. The number of processors can also be incremented or decremented by clicking the up/down buttons next to the text field.