Hello, We're setting up a new cluster here. Open MPI 1.7.4 was hanging at startup without any error message. The issue appears to be udcm_component_query() hanging in finalize() on the sched_yield() loop when memlock limit isn't set to unlimited as usual.
Unfortunately the hangs occur before we print the usual error message "you need to set memlock limit to unlimited". If the udcm problem cannot be fixed, it would be good to print an error message about memlock not being unlimited much earlier. Brice
