Tracing MPI Load Imbalance
$ mpirun -n 2 -trace-imbalance ./myApp
- This feature is currently available on Linux* OS only.
- Point-to-point communication patterns displayed by Intel Trace Analyzer may be unreliable, because thelibVTimlibrary skips tracing of certain functions.
- The library traces only those MPI functions that can potentially generate load imbalance. Therefore, all non-blocking operations are not traced.
- Intel Trace Analyzer cannot run idealization for trace files generated bylibVTim.