t8  1.2.0
t8code is a C library to manage a forest of adaptive space-trees of general element classes in parallel.
t8_cmesh_partition.h
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1 /*
2  This file is part of t8code.
3  t8code is a C library to manage a collection (a forest) of multiple
4  connected adaptive space-trees of general element classes in parallel.
5 
6  Copyright (C) 2015 the developers
7 
8  t8code is free software; you can redistribute it and/or modify
9  it under the terms of the GNU General Public License as published by
10  the Free Software Foundation; either version 2 of the License, or
11  (at your option) any later version.
12 
13  t8code is distributed in the hope that it will be useful,
14  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  GNU General Public License for more details.
17 
18  You should have received a copy of the GNU General Public License
19  along with t8code; if not, write to the Free Software Foundation, Inc.,
20  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 */
22 
28 #ifndef T8_CMESH_PARTITION_H
29 #define T8_CMESH_PARTITION_H
30 
31 #include <t8.h>
32 #include <t8_cmesh.h>
33 #include "t8_cmesh_types.h"
34 
35 T8_EXTERN_C_BEGIN ();
36 
42 void t8_cmesh_partition (t8_cmesh_t cmesh, sc_MPI_Comm comm);
43 
52 void t8_cmesh_gather_trees_per_eclass (t8_cmesh_t cmesh,
53  sc_MPI_Comm comm);
54 
62 void t8_cmesh_gather_treecount (t8_cmesh_t cmesh,
63  sc_MPI_Comm comm);
64 
76 void t8_cmesh_gather_treecount_nocommit (t8_cmesh_t cmesh,
77  sc_MPI_Comm comm);
78 
79 /* TODO: document, only for debug */
80 void t8_cmesh_offset_print (t8_cmesh_t cmesh,
81  sc_MPI_Comm comm);
82 
92 t8_shmem_array_t t8_cmesh_offset_concentrate (int proc, sc_MPI_Comm comm,
93  t8_gloidx_t num_trees);
94 
107 t8_shmem_array_t t8_cmesh_offset_random (sc_MPI_Comm comm,
108  t8_gloidx_t num_trees,
109  int shared, unsigned seed);
110 
119 t8_shmem_array_t t8_cmesh_offset_half (t8_cmesh_t cmesh, sc_MPI_Comm comm);
120 
132 t8_shmem_array_t t8_cmesh_offset_percent (t8_cmesh_t cmesh,
133  sc_MPI_Comm comm, int percent);
134 
135 T8_EXTERN_C_END ();
136 
137 #endif /* !T8_CMESH_PARTITION_H */
t8_cmesh
This structure holds the connectivity data of the coarse mesh.
Definition: t8_cmesh_types.h:83
t8_shmem_array
Shared memory array structure.
Definition: t8_shmem.c:35
t8.h
This is the administrative header file for t8code.
t8_gloidx_t
int64_t t8_gloidx_t
A type for global indexing that holds really big numbers.
Definition: t8.h:105
t8_cmesh.h
We define the coarse mesh of trees in this file.
t8_cmesh_gather_treecount_nocommit
void t8_cmesh_gather_treecount_nocommit(t8_cmesh_t cmesh, sc_MPI_Comm comm)
Perform the same task as t8_cmesh_gather_treecount, but do not perform the debugging check whether cm...
Definition: t8_cmesh_partition.c:270
t8_cmesh_offset_random
t8_shmem_array_t t8_cmesh_offset_random(sc_MPI_Comm comm, t8_gloidx_t num_trees, int shared, unsigned seed)
Create a random partition table.
Definition: t8_cmesh_partition.c:1895
t8_cmesh_offset_concentrate
t8_shmem_array_t t8_cmesh_offset_concentrate(int proc, sc_MPI_Comm comm, t8_gloidx_t num_trees)
Create a valid partition table that concentrates all trees at a given process.
Definition: t8_cmesh_partition.c:1851
t8_cmesh_offset_half
t8_shmem_array_t t8_cmesh_offset_half(t8_cmesh_t cmesh, sc_MPI_Comm comm)
Create a repartition array, where each process sends half of its trees to the next process.
Definition: t8_cmesh_partition.c:2049
t8_cmesh_offset_percent
t8_shmem_array_t t8_cmesh_offset_percent(t8_cmesh_t cmesh, sc_MPI_Comm comm, int percent)
Create a repartition array, where each process sends a percentage of its trees to the next process.
Definition: t8_cmesh_partition.c:1979
t8_cmesh_gather_treecount
void t8_cmesh_gather_treecount(t8_cmesh_t cmesh, sc_MPI_Comm comm)
Create the offset array for a partitioned cmesh.
Definition: t8_cmesh_partition.c:262
t8_cmesh_gather_trees_per_eclass
void t8_cmesh_gather_trees_per_eclass(t8_cmesh_t cmesh, sc_MPI_Comm comm)
From num_local_trees_per_eclass compute num_trees_per_eclass.
Definition: t8_cmesh_partition.c:140
t8_cmesh_partition
void t8_cmesh_partition(t8_cmesh_t cmesh, sc_MPI_Comm comm)
Given a cmesh which is to be partitioned, execute the partition task.
Definition: t8_cmesh_partition.c:1750
t8_cmesh_types.h
We define here the datatypes needed for internal cmesh routines.