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5.10 MP_PRINTENV ...................................................................................... 22

5.11 MP_STATISTICS.................................................................................... 23

5.12 Dropped switch packets.......................................................................... 24

5.12.1 Packets dropped because of a software problem on an endpoint.... 24

5.12.2 Packets dropped in the ML0 interface.............................................. 26

5.12.3 Packets dropped because of a hardware problem on an endpoint... 27

5.12.4 Packets dropped in the switch hardware.......................................... 28

5.13 MP_INFOLEVEL..................................................................................... 28

5.14 LAPI_DEBUG_COMM_TIMEOUT.......................................................... 29

5.15 LAPI_DEBUG_PERF.............................................................................. 29

5.16 AIX 5L trace for daemon activity............................................................. 30

6.0 Conclusions and summary ........................................................................... 30

7.0 Additional reading......................................................................................... 30

7.1 HPS documentation.................................................................................. 30

7.2 MPI documentation................................................................................... 31

7.3 AIX 5L performance guides ...................................................................... 31

7.4 IBM Redbooks .......................................................................................... 31

7.5 POWER4.................................................................................................. 31

IBM pSeries User Manual

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