TWOPT_UINT("payload_sz",payload_sz,"size of the payload for synthetic traffic"),
TWOPT_UINT("syn_type",syn_type,"type of synthetic traffic"),
TWOPT_UINT("preserve_wait_ordering",preserve_wait_ordering,"only enable when getting unmatched send/recv errors in optimistic mode (turning on slows down simulation)"),
TWOPT_UINT("debug_cols",debug_cols,"completion time of collective operations (currently MPI_AllReduce)"),
TWOPT_UINT("enable_mpi_debug",enable_debug,"enable debugging of MPI sim layer (works with sync=1 only)"),