X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3d25ce2fc68666d4b674c4f710cde362aa584632..d53d00d608a60a6f05e77ea7b7cd5c4e544d7ab1:/src/smpi/colls/bcast-NTSB.c

diff --git a/src/smpi/colls/bcast-NTSB.c b/src/smpi/colls/bcast-NTSB.c
deleted file mode 100644
index ffdcfc2504..0000000000
--- a/src/smpi/colls/bcast-NTSB.c
+++ /dev/null
@@ -1,185 +0,0 @@
-/* Copyright (c) 2013-2014. The SimGrid Team.
- * All rights reserved.                                                     */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "colls_private.h"
-
-int bcast_NTSB_segment_size_in_byte = 8192;
-
-int smpi_coll_tuned_bcast_NTSB(void *buf, int count, MPI_Datatype datatype,
-                               int root, MPI_Comm comm)
-{
-  int tag = COLL_TAG_BCAST;
-  MPI_Status status;
-  int rank, size;
-  int i;
-
-  MPI_Request *send_request_array;
-  MPI_Request *recv_request_array;
-  MPI_Status *send_status_array;
-  MPI_Status *recv_status_array;
-
-  MPI_Aint extent;
-  extent = smpi_datatype_get_extent(datatype);
-
-  rank = smpi_comm_rank(comm);
-  size = smpi_comm_size(comm);
-
-  /* source node and destination nodes (same through out the functions) */
-  int from = (rank - 1) / 2;
-  int to_left = rank * 2 + 1;
-  int to_right = rank * 2 + 2;
-  if (to_left >= size)
-    to_left = -1;
-  if (to_right >= size)
-    to_right = -1;
-
-  /* segment is segment size in number of elements (not bytes) */
-  int segment = bcast_NTSB_segment_size_in_byte / extent;
-  segment =  segment == 0 ? 1 :segment; 
-  /* pipeline length */
-  int pipe_length = count / segment;
-
-  /* use for buffer offset for sending and receiving data = segment size in byte */
-  int increment = segment * extent;
-
-  /* if the input size is not divisible by segment size => 
-     the small remainder will be done with native implementation */
-  int remainder = count % segment;
-
-  /* if root is not zero send to rank zero first */
-  if (root != 0) {
-    if (rank == root) {
-      smpi_mpi_send(buf, count, datatype, 0, tag, comm);
-    } else if (rank == 0) {
-      smpi_mpi_recv(buf, count, datatype, root, tag, comm, &status);
-    }
-  }
-
-  /* when a message is smaller than a block size => no pipeline */
-  if (count <= segment) {
-
-    /* case: root */
-    if (rank == 0) {
-      /* case root has only a left child */
-      if (to_right == -1) {
-        smpi_mpi_send(buf, count, datatype, to_left, tag, comm);
-      }
-      /* case root has both left and right children */
-      else {
-        smpi_mpi_send(buf, count, datatype, to_left, tag, comm);
-        smpi_mpi_send(buf, count, datatype, to_right, tag, comm);
-      }
-    }
-
-    /* case: leaf ==> receive only */
-    else if (to_left == -1) {
-      smpi_mpi_recv(buf, count, datatype, from, tag, comm, &status);
-    }
-
-    /* case: intermidiate node with only left child ==> relay message */
-    else if (to_right == -1) {
-      smpi_mpi_recv(buf, count, datatype, from, tag, comm, &status);
-      smpi_mpi_send(buf, count, datatype, to_left, tag, comm);
-    }
-
-    /* case: intermidiate node with both left and right children ==> relay message */
-    else {
-      smpi_mpi_recv(buf, count, datatype, from, tag, comm, &status);
-      smpi_mpi_send(buf, count, datatype, to_left, tag, comm);
-      smpi_mpi_send(buf, count, datatype, to_right, tag, comm);
-    }
-    return MPI_SUCCESS;
-  }
-  // pipelining
-  else {
-
-    send_request_array =
-        (MPI_Request *) xbt_malloc(2 * (size + pipe_length) * sizeof(MPI_Request));
-    recv_request_array =
-        (MPI_Request *) xbt_malloc((size + pipe_length) * sizeof(MPI_Request));
-    send_status_array =
-        (MPI_Status *) xbt_malloc(2 * (size + pipe_length) * sizeof(MPI_Status));
-    recv_status_array =
-        (MPI_Status *) xbt_malloc((size + pipe_length) * sizeof(MPI_Status));
-
-
-
-    /* case: root */
-    if (rank == 0) {
-      /* case root has only a left child */
-      if (to_right == -1) {
-        for (i = 0; i < pipe_length; i++) {
-          send_request_array[i] = smpi_mpi_isend((char *) buf + (i * increment), segment, datatype, to_left,
-                    tag + i, comm);
-        }
-        smpi_mpi_waitall((pipe_length), send_request_array, send_status_array);
-      }
-      /* case root has both left and right children */
-      else {
-        for (i = 0; i < pipe_length; i++) {
-          send_request_array[i] = smpi_mpi_isend((char *) buf + (i * increment), segment, datatype, to_left,
-                    tag + i, comm);
-          send_request_array[i + pipe_length] = smpi_mpi_isend((char *) buf + (i * increment), segment, datatype, to_right,
-                    tag + i, comm);
-        }
-        smpi_mpi_waitall((2 * pipe_length), send_request_array, send_status_array);
-      }
-    }
-
-    /* case: leaf ==> receive only */
-    else if (to_left == -1) {
-      for (i = 0; i < pipe_length; i++) {
-        recv_request_array[i] = smpi_mpi_irecv((char *) buf + (i * increment), segment, datatype, from,
-                  tag + i, comm);
-      }
-      smpi_mpi_waitall((pipe_length), recv_request_array, recv_status_array);
-    }
-
-    /* case: intermidiate node with only left child ==> relay message */
-    else if (to_right == -1) {
-      for (i = 0; i < pipe_length; i++) {
-        recv_request_array[i] = smpi_mpi_irecv((char *) buf + (i * increment), segment, datatype, from,
-                  tag + i, comm);
-      }
-      for (i = 0; i < pipe_length; i++) {
-        smpi_mpi_wait(&recv_request_array[i], &status);
-        send_request_array[i] = smpi_mpi_isend((char *) buf + (i * increment), segment, datatype, to_left,
-                  tag + i, comm);
-      }
-      smpi_mpi_waitall(pipe_length, send_request_array, send_status_array);
-
-    }
-    /* case: intermidiate node with both left and right children ==> relay message */
-    else {
-      for (i = 0; i < pipe_length; i++) {
-        recv_request_array[i] = smpi_mpi_irecv((char *) buf + (i * increment), segment, datatype, from,
-                  tag + i, comm);
-      }
-      for (i = 0; i < pipe_length; i++) {
-        smpi_mpi_wait(&recv_request_array[i], &status);
-        send_request_array[i] = smpi_mpi_isend((char *) buf + (i * increment), segment, datatype, to_left,
-                  tag + i, comm);
-        send_request_array[i + pipe_length] = smpi_mpi_isend((char *) buf + (i * increment), segment, datatype, to_right,
-                  tag + i, comm);
-      }
-      smpi_mpi_waitall((2 * pipe_length), send_request_array, send_status_array);
-    }
-
-    free(send_request_array);
-    free(recv_request_array);
-    free(send_status_array);
-    free(recv_status_array);
-  }                             /* end pipeline */
-
-  /* when count is not divisible by block size, use default BCAST for the remainder */
-  if ((remainder != 0) && (count > segment)) {
-    XBT_WARN("MPI_bcast_NTSB use default MPI_bcast.");	  	  
-    smpi_mpi_bcast((char *) buf + (pipe_length * increment), remainder, datatype,
-              root, comm);
-  }
-
-  return MPI_SUCCESS;
-}