The SET VCOUNTERS Collector command enables the counting of
    vector processor instructions. The collected data can help you
    determine to what extent the vector processor is being used. You
    must specify at least one node specification on the command line
    to indicate the domain of the data to be collected.

    The following node specifications are used when collecting vector
    instruction counts:

    o  PROGRAM ADDRESS by VINSTRUCTION

    o  MODULE module-name by VINSTRUCTION

    o  ROUTINE routine-name by VINSTRUCTION