Getting some internal CPU and elapse time statistics

This section describes how to get some CPU and elapse time statistics for the internal PSMILe and Driver/Transformer routines using the routines in module oasis4/lib/common_oa4/src/
psmile_timer.F90. To use this functionality, one has to:

• call psmile_timer_init at the beginning of the code with, as arguments, the number of measures, a vector giving a label for each measure, the application name, the name of the file where the statistics will be printed out, and the local communicator of the application (see an example in prism_init.F90)
• for each x measure of time, call psmile_timer_start(x) and psmile_timer_stop(x); if these two routines are called multiple times for the same x, the time will get accumulated
• call psmile_timeprint at the end of the run (see example in prism_terminate.F90)

The statistics will get printed for all processes in a file with the name given as argument of the
psmile_timer_init. Currently, x=1 and x=2 are used under CPP key PROFILE in the PSMILe to measure the total time and the time used in prism_enddef (see prism_init.F90, prism_enddef.F90 and prism_terminate.F90). In the Driver/Transformer, x=1 is used under CPP key PROFILE to measure the total time used by the Driver/Transformer (see prismdrv_init_appl.F90 and
prismdrv_finalize.F90).