Hi, I am looking at the online FAQ for ompio which seems to show that the following parameters are defined: io_ompio_num_aggregators io_ompio_call_timing
But on OMPI version 1.10.1 or 1.8.3: 1: setting mpirun -mca io ompio -mca io_ompio_coll_timing_info appears to not produce a summary. 2: io_ompio_num_aggregators is not listed as a parameter as listed by ompi_info -a | grep ompio Am I doing something wrong, or are these options not supported in these versions? kindest regards Mike
