[cig-commits] r7642 - cs/Exchanger/trunk/lib

[tan2 at geodynamics.org]

Author: tan2
Date: 2007-07-11 13:08:02 -0700 (Wed, 11 Jul 2007)
New Revision: 7642

Modified:
   cs/Exchanger/trunk/lib/Sink.cc
   cs/Exchanger/trunk/lib/Sink.h
   cs/Exchanger/trunk/lib/Source.cc
Log:
Added some comments

Modified: cs/Exchanger/trunk/lib/Sink.cc
===================================================================
--- cs/Exchanger/trunk/lib/Sink.cc	2007-07-11 06:24:16 UTC (rev 7641)
+++ cs/Exchanger/trunk/lib/Sink.cc	2007-07-11 20:08:02 UTC (rev 7642)
@@ -29,16 +29,23 @@
 
 	MPI_Comm_rank(comm, &me);
 
+        // append the rank of all sources into sourceRanks array
 	sourceRanks.reserve(nsrc);
 	for(int i=0; i<nsrc+1; i++)
 	    if(i != me)
 		sourceRanks.push_back(i);
 
+        // send mesh to all sources, each source will find out which 
+        // mesh nodes are inside the source proc.
 	sendMesh(mesh);
 
+        // sources report back
 	recvMeshNode();
+
+        // assert all mesh nodes are reported
 	testMeshNode(mesh);
 
+        // keep a copy of the coordinates of mesh nodes
 	initX(mesh);
     }
 

Modified: cs/Exchanger/trunk/lib/Sink.h
===================================================================
--- cs/Exchanger/trunk/lib/Sink.h	2007-07-11 06:24:16 UTC (rev 7641)
+++ cs/Exchanger/trunk/lib/Sink.h	2007-07-11 20:08:02 UTC (rev 7642)
@@ -18,6 +18,7 @@
 
 namespace Exchanger {
 
+    // forward declaration
     class BoundedMesh;
 
 

Modified: cs/Exchanger/trunk/lib/Source.cc
===================================================================
--- cs/Exchanger/trunk/lib/Source.cc	2007-07-11 06:24:16 UTC (rev 7641)
+++ cs/Exchanger/trunk/lib/Source.cc	2007-07-11 20:08:02 UTC (rev 7642)
@@ -31,12 +31,19 @@
 
     void Source::init(BoundedMesh& mesh, const BoundedBox& mybbox)
     {
+        // receive mesh nodes from sink
 	recvMesh(mesh, mybbox);
+
+        // using interpolator to find out which nodes are inside this proc
 	if(isOverlapped(mesh.bbox(), mybbox)) {
 	    createInterpolator(mesh);
 	    meshNode_.print("Exchanger-Source-meshNode");
 	}
+
+        // report which nodes are inside this proc to sink
 	sendMeshNode();
+
+        // keep a copy of the coordinates of mesh nodes
 	initX(mesh);
     }
 
@@ -48,6 +55,7 @@
 	mesh.broadcast(comm, sinkRank);
 
 #else
+        // a more efficient approach, but not finished
 	BoundedBox bbox = mybbox;
 	util::exchange(comm, sinkRank, bbox);