Installation

Coexistence

PE on the SP requires that all nodes involved in a parallel job be running the same level of PE.

When LoadLeveler and PE coexist on a node, they must be at one of these levels:

• LoadLeveler 3.1 with PE 3.2
• LoadLeveler 2.2 with PE 3.1
• LoadLeveler 2.2 with PE 2.4 (with PSSP 3.1 only)
• LoadLeveler 2.1 with PE 2.4
• LoadLeveler 1.3 with PE 2.3

The PE libraries used to run a job on a node must be compatible with the PSSP libraries on that node. The following combinations are compatible:

1. PE 3.2 with PSSP 3.4
2. PE 3.1 with PSSP 3.4 (32-bit applications on AIX 4.3.3 only)
3. PE 3.1 with PSSP 3.2
4. PE 2.4 with PSSP 3.1
5. PE 2.3 and PSSP 2.4
6. PE 2.3 and PSSP 2.3