IntelĀ® Trace Collector 9.1 Update 2 User and Reference Guide
INTERNAL-MPI [on|off]
VT_INTERNAL_MPI
on
Allows tracing of events inside the MPI implementation. This is enabled by default, but even then it still requires an MPI implementation which actually records events. The Intel Trace Collector documentation describes in more detail how an MPI implementation might do that.