OPAL_TIMER_MONOTONIC  113 opal/include/opal/sys/timer.h     return OPAL_TIMER_MONOTONIC;
OPAL_TIMER_MONOTONIC  190 opal/mca/timer/linux/timer_linux_component.c #if OPAL_HAVE_CLOCK_GETTIME && (0 == OPAL_TIMER_MONOTONIC)