Other Problems

Example 1

Symptom/Error Message

cannot execute binary file

Cause

Wrong binary executable file format or architecture.

This error occurs when you run a binary executable file build for x86_64 architecture on a k1om node (for example, on an Intel® Xeon Phi™ coprocessor). In such cases, hang of the MPI application is possible.

Solution

Verify the correctness of the binary file and the command line options.

Example 2

Symptom/Error Message

node01.9234ipath_userinit: assign_context command failed: Invalid argument
node01.9234Driver initialization failure on /dev/ipath (err=23)

Cause

Intel® True Scale IBA resource exhaustion. The MPI application was run over the tmi fabric.

Depending on Intel® True Scale Fabric hardware, PSM* may not support CPU over-subscription of the node. The maximum amount of processes which can be run on the node is limited and depends on a combination of the particular Intel® True Scale Fabric hardware and the amount of CPU cores.

Solution

Limit the number of MPI processes per node.