From 64ea3e3bb74387af9bbd78df28dbb9c0cdfe3fc9 Mon Sep 17 00:00:00 2001
From: Martin Bauer <martin.bauer@fau.de>
Date: Fri, 29 Dec 2017 14:46:20 +0100
Subject: [PATCH] AllGather support for fields
---
src/field/Gather.h | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/field/Gather.h b/src/field/Gather.h
index 4dd5ff1e4..58e23ff67 100644
--- a/src/field/Gather.h
+++ b/src/field/Gather.h
@@ -40,7 +40,8 @@ namespace field {
* \param blocks the block storage where the field is stored
* \param fieldID the block data id of the field
* \param boundingBox cell bounding box in global coordinates of the interval which is gathered
- * \param targetRank rank of the process where field is gathered
+ * \param targetRank rank of the process where field is gathered, if negative rank is passed, field is gathered
+ * on all processes
* \param comm MPI communicator
*
* \tparam Field_T the type of field which is stored in the given fieldID
@@ -88,7 +89,10 @@ namespace field {
// -- Gather message sizes --
mpi::RecvBuffer recvBuffer;
- mpi::gathervBuffer( sendBuffer, recvBuffer, targetRank, comm );
+ if ( targetRank >= 0 )
+ mpi::gathervBuffer( sendBuffer, recvBuffer, targetRank, comm );
+ else
+ mpi::allGathervBuffer( sendBuffer, recvBuffer, comm );
// -- Unpacking --
if ( recvBuffer.size() > 0 )
@@ -105,7 +109,6 @@ namespace field {
recvBuffer >> it.getF(f);
}
}
-
}
--
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