cur_num           344 opal/mca/btl/ofi/btl_ofi_context.c     static volatile int64_t cur_num = 0;
cur_num           349 opal/mca/btl/ofi/btl_ofi_context.c         my_context = &btl->contexts[cur_num];
cur_num           350 opal/mca/btl/ofi/btl_ofi_context.c         cur_num = (cur_num + 1) %btl->num_contexts;