MPI Analysis Limitations
There are certain limitations in the current MPI profiling support provided by the
Intel® VTune™
/ Intel Inspector:
Profiler
- MPI dynamic processes are not supported by theIntel VTune/ Intel Inspector. An example of dynamic process API is MPI_Comm_spawnProfiler
- The data collections that use the hardware event-based sampling collector are limited to only one such collection allowed at a time on a system. When theIntel VTuneis used to profile an MPI application, it is the responsibility of the user to make sure that only one SEP data collection session is launched on a given host. Common ways to achieve this is using the host syntax and distribute the ranks running under the tool over different hosts.Profiler