Home
Downloads
Documentation
Installation
User Guide
man-pages
API Documentation
README
Release Notes
Changes
License
Support
SourceForge Project
Main Page
Related Pages
Namespaces
Classes
Files
File List
File Members
All
Classes
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Friends
Macros
Pages
src
OpenFOAM
db
IOstreams
Pstreams
PstreamCombineReduceOps.H
Go to the documentation of this file.
1
/*---------------------------------------------------------------------------*\
2
========= |
3
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4
\\ / O peration |
5
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
6
\\/ M anipulation |
7
-------------------------------------------------------------------------------
8
License
9
This file is part of OpenFOAM.
10
11
OpenFOAM is free software: you can redistribute it and/or modify it
12
under the terms of the GNU General Public License as published by
13
the Free Software Foundation, either version 3 of the License, or
14
(at your option) any later version.
15
16
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19
for more details.
20
21
You should have received a copy of the GNU General Public License
22
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
23
24
InClass
25
Foam::Pstream
26
27
Description
28
Combination-Reduction operation for a parallel run. The
29
information from all nodes is collected on the master node,
30
combined using the given combination function and the result is
31
broadcast to all nodes
32
33
34
\*---------------------------------------------------------------------------*/
35
36
#ifndef PstreamCombineReduceOps_H
37
#define PstreamCombineReduceOps_H
38
39
#include "
Pstream.H
"
40
#include <
OpenFOAM/ops.H
>
41
42
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
43
44
namespace
Foam
45
{
46
47
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
48
49
template
<
class
T,
class
CombineOp>
50
void
combineReduce
51
(
52
const
List<Pstream::commsStruct>
& comms,
53
T
& Value,
54
const
CombineOp& cop
55
)
56
{
57
Pstream::combineGather
(comms, Value, cop);
58
Pstream::combineScatter
(comms, Value);
59
}
60
61
62
template
<
class
T,
class
CombineOp>
63
void
combineReduce
(
T
& Value,
const
CombineOp& cop)
64
{
65
if
(
Pstream::nProcs
() <
Pstream::nProcsSimpleSum
)
66
{
67
Pstream::combineGather
(
Pstream::linearCommunication
(), Value, cop);
68
Pstream::combineScatter
(
Pstream::linearCommunication
(), Value);
69
}
70
else
71
{
72
Pstream::combineGather
(
Pstream::treeCommunication
(), Value, cop);
73
Pstream::combineScatter
(
Pstream::treeCommunication
(), Value);
74
}
75
}
76
77
78
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
79
80
}
// End namespace Foam
81
82
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
83
84
#endif
85
86
// ************************ vim: set sw=4 sts=4 et: ************************ //