coll libnbc: Remove dead code

Remove dead code that was causing warnings about unused static
functions.

Signed-off-by: Brian Barrett <bbarrett@amazon.com>

ompi/mca/coll/libnbc/nbc_ineighbor_allgather.c

@@ -181,157 +181,6 @@ int ompi_coll_libnbc_ineighbor_allgather(const void *sbuf, int scount, MPI_Datat
     return OMPI_SUCCESS;
 }
 
-/* better binomial bcast
- * working principle:
- * - each node gets a virtual rank vrank
- * - the 'root' node get vrank 0
- * - node 0 gets the vrank of the 'root'
- * - all other ranks stay identical (they do not matter)
- *
- * Algorithm:
- * - each node with vrank > 2^r and vrank < 2^r+1 receives from node
- *   vrank - 2^r (vrank=1 receives from 0, vrank 0 receives never)
- * - each node sends each round r to node vrank + 2^r
- * - a node stops to send if 2^r > commsize
- */
-#define RANK2VRANK(rank, vrank, root) \
-{ \
-  vrank = rank; \
-  if (rank == 0) vrank = root; \
-  if (rank == root) vrank = 0; \
-}
-#define VRANK2RANK(rank, vrank, root) \
-{ \
-  rank = vrank; \
-  if (vrank == 0) rank = root; \
-  if (vrank == root) rank = 0; \
-}
-static inline int bcast_sched_binomial(int rank, int p, int root, NBC_Schedule *schedule, void *buffer, int count, MPI_Datatype datatype) {
-  int maxr, vrank, peer, res;
-
-  maxr = (int)ceil((log((double)p)/LOG2));
-
-  RANK2VRANK(rank, vrank, root);
-
-  /* receive from the right hosts  */
-  if (vrank != 0) {
-    for (int r = 0 ; r < maxr ; ++r) {
-      if ((vrank >= (1 << r)) && (vrank < (1 << (r + 1)))) {
-        VRANK2RANK(peer, vrank - (1 << r), root);
-        res = NBC_Sched_recv (buffer, false, count, datatype, peer, schedule, false);
-        if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-          return res;
-        }
-      }
-    }
-
-    res = NBC_Sched_barrier (schedule);
-    if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-      return res;
-    }
-  }
-
-  /* now send to the right hosts */
-  for (int r = 0 ; r < maxr ; ++r) {
-    if (((vrank + (1 << r) < p) && (vrank < (1 << r))) || (vrank == 0)) {
-      VRANK2RANK(peer, vrank + (1 << r), root);
-      res = NBC_Sched_send (buffer, false, count, datatype, peer, schedule, false);
-      if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-        return res;
-      }
-    }
-  }
-
-  return OMPI_SUCCESS;
-}
-
-/* simple linear MPI_Ibcast */
-static inline int bcast_sched_linear(int rank, int p, int root, NBC_Schedule *schedule, void *buffer, int count, MPI_Datatype datatype) {
-  int res;
-
-  /* send to all others */
-  if(rank == root) {
-    for (int peer = 0 ; peer < p ; ++peer) {
-      if (peer != root) {
-        /* send msg to peer */
-        res = NBC_Sched_send (buffer, false, count, datatype, peer, schedule, false);
-        if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-          return res;
-        }
-      }
-    }
-  } else {
-    /* recv msg from root */
-    res = NBC_Sched_recv (buffer, false, count, datatype, root, schedule, false);
-    if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-      return res;
-    }
-  }
-
-  return OMPI_SUCCESS;
-}
-
-/* simple chained MPI_Ibcast */
-static inline int bcast_sched_chain(int rank, int p, int root, NBC_Schedule *schedule, void *buffer, int count, MPI_Datatype datatype, int fragsize, size_t size) {
-  int res, vrank, rpeer, speer, numfrag, fragcount, thiscount;
-  MPI_Aint ext;
-  char *buf;
-
-  RANK2VRANK(rank, vrank, root);
-  VRANK2RANK(rpeer, vrank-1, root);
-  VRANK2RANK(speer, vrank+1, root);
-  res = ompi_datatype_type_extent(datatype, &ext);
-  if (MPI_SUCCESS != res) {
-    NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
-    return res;
-  }
-
-  if (count == 0) {
-    return OMPI_SUCCESS;
-  }
-
-  numfrag = count * size/fragsize;
-  if ((count * size) % fragsize != 0) {
-    numfrag++;
-  }
-
-  fragcount = count/numfrag;
-
-  for (int fragnum = 0 ; fragnum < numfrag ; ++fragnum) {
-    buf = (char *) buffer + fragnum * fragcount * ext;
-    thiscount = fragcount;
-    if (fragnum == numfrag-1) {
-      /* last fragment may not be full */
-      thiscount = count - fragcount * fragnum;
-    }
-
-    /* root does not receive */
-    if (vrank != 0) {
-      res = NBC_Sched_recv (buf, false, thiscount, datatype, rpeer, schedule, true);
-      if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-        return res;
-      }
-    }
-
-    /* last rank does not send */
-    if (vrank != p-1) {
-      res = NBC_Sched_send (buf, false, thiscount, datatype, speer, schedule, false);
-      if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-        return res;
-      }
-
-      /* this barrier here seems awaward but isn't!!!! */
-      if (vrank == 0)  {
-        res = NBC_Sched_barrier (schedule);
-        if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-          return res;
-        }
-      }
-    }
-  }
-
-  return OMPI_SUCCESS;
-}
 
 int ompi_coll_libnbc_neighbor_allgather_init(const void *sbuf, int scount, MPI_Datatype stype, void *rbuf,
                                              int rcount, MPI_Datatype rtype, struct ompi_communicator_t *comm,