You can instruct the Collector to count all vector processor
    instructions in all or in part of an application with the SET
    VCOUNTERS command. From this information, you can determine to
    what extent the vector processor is used. You must specify at
    least one nodespec to indicate the domain of the data collected.

  PCAC> SET VCOUNTERS PROGRAM_ADDRESS BY VINSTRUCTION

    The following example shows collecting vector instruction counts
    for an entire program using the nodespec of PROGRAM ADDRESS BY
    VINSTRUCTION.

  PCAC> SET VCOUNTERS ROUTINE XYZ BY VINSTRUCTION

    The following example example shows collecting vector instruction
    counts for routine XYZ using the nodespec of ROUTINE BY
    VINSTRUCTION.

    See the Command Dictionary in the Guide to DIGITAL PCA for a
    complete list of available nodespecs with the SET VCOUNTERS
    command.