[OMPI users] Dynamic algorithms problem

Dear OpenMPI user, i'm trying to use collective dynamic rules with OpenMPi 1.4.2: export OMPI_MCA_coll_tuned_use_dynamic_rules=1 export OMPI_MCA_coll_tuned_bcast_algorithm=1 My target is to test Bcast peformances using SKaMPI benchmark changing dynamic rules. But at runtime i get the follow erro

[OMPI users] Open MPI, cannot get the results from workers

Dear All : I designed a master-worker framework, in which the master can schedulemultiple tasks (numTaskPerWorkerNode) to each worker and then collects results from workers. if the numTaskPerWorkerNode = 1, it works well. But, if numTaskPerWorkerNode > 1, the master cannot get the results from