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For a power 4 system such as HPCx the event counters are grouped into
61 different event sets. The
-g option allows you to select the
event set. The example below selects event set number 5
poe /usr/local/packages/actc/hpmtk/pwr4/bin/hpmcount -g 5 parallel_prog.x
-g takes a single integer between 0 and 60 as an argument.
The default event set is 60, which will be used if
-g is not
specified. Luiz DeRose considers the event sets 5, 53, 58, 59 and 60 as
particularly useful. We describe these five sets here. Use HPMCOUNT's
-l option to enquire about the
remaining event sets.