smpi: many classes died tonight, but that will save kitten on the long term.

[simgrid.git] / src / smpi / colls / allgather / allgather-2dmesh.cpp

diff --git a/src/smpi/colls/allgather/allgather-2dmesh.cpp b/src/smpi/colls/allgather/allgather-2dmesh.cpp
index d1362f6..0a774ad 100644 (file)
--- a/src/smpi/colls/allgather/allgather-2dmesh.cpp
+++ b/src/smpi/colls/allgather/allgather-2dmesh.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2017. The SimGrid Team.
+/* Copyright (c) 2013-2019. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -62,14 +62,14 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
  * Descp: takes a number and tries to find a factoring of x, y mesh out of it
 
- * Auther: Ahmad Faraj
+ * Author: Ahmad Faraj
  ****************************************************************************/
 #ifndef TWOD
 #define TWOD
 static int is_2dmesh(int num, int *i, int *j)
 {
   int x, max = num / 2;
-  x = sqrt(num);
+  x = sqrt(double(num));
 
   while (x <= max) {
     if ((num % x) == 0) {
@@ -103,7 +103,7 @@ static int is_2dmesh(int num, int *i, int *j)
  * algorithm. Allgather ommunication occurs first in the x dimension then in
  * the y dimension.  The communication in each dimension follows
  * "simple"
- * Auther: Ahmad Faraj
+ * Author: Ahmad Faraj
 ****************************************************************************/
 
 namespace simgrid{
@@ -111,11 +111,10 @@ namespace smpi{
 
 
 int
-Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
-                                 send_type, void *recv_buff, int recv_count,
-                                 MPI_Datatype recv_type, MPI_Comm comm)
+allgather__2dmesh(const void *send_buff, int send_count, MPI_Datatype
+                  send_type, void *recv_buff, int recv_count,
+                  MPI_Datatype recv_type, MPI_Comm comm)
 {
-  MPI_Request *req, *req_ptr;
   MPI_Aint extent;
 
   int i, src, dst, rank, num_procs;
@@ -131,7 +130,7 @@ Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
   block_size = extent * send_count;
 
   if (not is_2dmesh(num_procs, &X, &Y))
-    THROWF(arg_error,0, "allgather_2dmesh algorithm can't be used with this number of processes! ");
+    throw std::invalid_argument("allgather_2dmesh algorithm can't be used with this number of processes!");
 
   my_row_base = (rank / Y) * Y;
   my_col_base = rank % Y;
@@ -140,9 +139,8 @@ Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
   if (Y > X)
     num_reqs = Y;
 
-  req = (MPI_Request *) xbt_malloc(num_reqs * sizeof(MPI_Request));
-
-  req_ptr = req;
+  MPI_Request* req     = new MPI_Request[num_reqs];
+  MPI_Request* req_ptr = req;
 
   // do local allgather/local copy
   recv_offset = rank * block_size;
@@ -193,7 +191,7 @@ Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
 
   Request::waitall(X - 1, req, MPI_STATUSES_IGNORE);
 
-  free(req);
+  delete[] req;
 
   return MPI_SUCCESS;
 }