PPT Slide

mpihpm (cont'd)

• counters are contained in 58 groups of 8 counters each
  • description of counter groups is in /usr/local/mpi_trace/power4.ref

• specify group through environment variable
  setenv HPM_GROUP 53
  

• The writer of mpihpm recommends groups 53, 56, and 58
  • they must be run one-at-a-time

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