MPI Library
IBM Spectrum MPI mpirun Options
- General Options
| Option | Purpose |
|---|---|
| -display-allocation | Report List of Allocated Hosts |
| -report-bindings | Report Processor Affinity Through Visual Representation |
| -stdio p | Prefix stdout by Rank |
Output Example for Option
-display-allocation:====================== ALLOCATED NODES ====================== host01: slots=4 max_slots=0 slots_inuse=0 state=UP =================================================================Output Example for Option
-report-bindings:
- Interconnect Selection
| Option | Purpose |
|---|---|
| -mxm | Use MXM Interconnect instead of PAMI (Default) |
| -pami_noib | Only Use PAMI Shared Memory Mechanism & Avoid Opening IB Device |
| -prot | Display Protocols to be Used inside and between Hosts |
| -verbsbypass {3.1,3.2,3.3} | Bypass PAMI Verbs (Requires IB Verbs 3.1 / 3.2 / 3.3) |
InfiniBand (POWER): PAMI with MOFED 3.1, 3.2, and 3.3