Intel® Trace Collector 9.1 Update 2 User and Reference Guide
By default, the libVTmc library does not write a tracefile. To perform correctness checking of an MPI application, enable trace collection and link your application with the libVTmc library. Do the following:
Switch the CHECK-TRACING configuration option to on to enable Intel® Trace Collector to record the correctness checking reports to the tracefile. For example:
$ export VT_CHECK_TRACING=on
Run your application with the -check_mpi option of mpirun. For example:
$ mpirun -check_mpi -n 4 ./myApp
Relink your application with the libVTmc library using the -check_mpi compiler option. For example:
> mpiicc -check_mpi myApp.c
Run your application with the CHECK-TRACING configuration option enabled. For example:
> mpiexec -n 4 myApp.exe --itc-args --check-tracing ON --itc-args-end
Use Intel® Trace Analyzer to view correctness checking events.