IBM pSeries manual Mpprintenv

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For HAL libraries: dsh sum /usr/sni/aix52/lib/libhal_r.a

For MPI libraries: dsh sum /usr/lpp/ppe.poe/lib/libmpi_r.a (or run with MP_PRINTENV=yes)

To make sure you are running the correct combination of HAL, LAPI, and MPI, check the Service Pack Release Notes.

5.10 MP_PRINTENV

If you set MP_PRINTENV=YES or MP_PRINTENV=script_name, the output includes the following information about environmental variables. The output for the user script is also printed, if it was specified.

Hostname

Job ID (MP_PARTITION) Number of Tasks (MP_PROCS) Number of Nodes (MP_NODES)

Number of Tasks per Node (MP_TASKS_PER_NODE) Library Specifier (MP_EUILIB)

Adapter Name IP Address Window ID Network ID

Device Name (MP_EUIDEVICE) Window Instances (MP_INSTANCES) Striping Setup

Protocols in Use (MP_MSG_API) Effective Libpath (LIBPATH) Current Directory

64 Bit Mode Threaded Library

Requested Thread Scope (AIXTHREAD_SCOPE)

Thread Stack Allocation (MP_THREAD_STACKSIZE/Bytes) CPU Use (MP_CPU_USE)

Adapter Use (MP_ADAPTER_USE) Clock Source (MP_CLOCK_SOURCE) Priority Class (MP_PRIORITY) Connection Timeout (MP_TIMEOUT/sec)

Adapter Interrupts Enabled (MP_CSS_INTERRUPT) Polling Interval (MP_POLLING_INTERVAL/sec) Use Flow Control (MP_USE_FLOW_CONTROL) Buffer Memory (MP_BUFFER_MEM/Bytes) Message Eager Limit (MP_EAGER_LIMIT/Bytes) Message Wait Mode(MP_WAIT_MODE)

Retransmit Interval (MP_RETRANSMIT_INTERVAL/count) Shared Memory Enabled (MP_SHARED_MEMORY) Shared Memory Collective (MP_SHM_CC)

Collective Shared Memory Segment Page Size (KBytes) Large Page Environment

Large Page Memory Page Size (KBytes)

pshpstuningguidewp040105.doc

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Contents IBM ~pSeries High Performance Switch Contents Mpprintenv Mpstatistics Introduction Mpeagerlimit Tunables and settings for switch softwareMPI tunables for Parallel Environment MppollingintervalMprexmitbufsize and Mprexmitbufcnt MemoryaffinityMpcssinterrupt MptaskaffinityMPI-IO Chgsni command IP tunables Tunables and settings for AIX 5LFile cache Svmon and vmstat commands Svmon Vsid Esid Type Description LPage Inuse Pin Pgsp VirtualVmstat Pin Pgsp VirtualLarge page sizing Pshpstuningguidewp040105.doc Memory affinity for a single Lpar Large pages and IP supportAmount of memory available Daemon configuration Debug settings in the AIX 5L kernelRsct daemons Reducing the number of daemons running LoadLeveler daemonsReducing logging Placement of POE managers and LoadLeveler scheduler Settings for AIX 5L threadsAIX 5L mail, spool, and sync daemons Driverdebug setting Debug settings and data collection toolsLsattr tuning Iptrclvl settingService focal point Small Real Mode Address Region on HMC GUIDeconfigured L3 cache Affinity LPARsHMC error logging Errpt commandMultiple versions of MPI libraries Mpprintenv Mpstatistics MemoryaffinityDropped switch packets Nddipacketsmsw 0x00000000 Nddipacketslsw Packets dropped in the ML0 interface Packets dropped because of a hardware problem on an endpoint Packets dropped in the switch hardware MpinfolevelLapidebugcommtimeout LapidebugperfAdditional reading AIX 5L trace for daemon activityConclusions and summary HPS documentationAIX 5L performance guides POWER4MPI documentation IBM RedbooksPshpstuningguidewp040105.doc