nfences          3655 oshmem/mca/memheap/ptmalloc/malloc.c   int nfences = 0;
nfences          3673 oshmem/mca/memheap/ptmalloc/malloc.c     ++nfences;
nfences          3679 oshmem/mca/memheap/ptmalloc/malloc.c   dl_assert(nfences >= 2);