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Aland, Sebastian
amdis
Commits
2ffb4759
Commit
2ffb4759
authored
Jul 15, 2010
by
Thomas Witkowski
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Improved memory allocation for petsc matrix in the case of zero diagonal elements.
parent
3c9efbeb
Changes
1
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1 changed file
with
7 additions
and
4 deletions
+7
-4
AMDiS/src/parallel/GlobalMatrixSolver.cc
AMDiS/src/parallel/GlobalMatrixSolver.cc
+7
-4
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AMDiS/src/parallel/GlobalMatrixSolver.cc
View file @
2ffb4759
...
...
@@ -4,7 +4,7 @@
#include "DOFVector.h"
#include "Debug.h"
#include "SystemVector.h"
#include "VtkWriter.h"
#include "petscksp.h"
namespace
AMDiS
{
...
...
@@ -283,10 +283,10 @@ namespace AMDiS {
// Traverse all non zero entries in this row.
for
(
icursor_type
icursor
=
begin
<
nz
>
(
cursor
),
icend
=
end
<
nz
>
(
cursor
);
icursor
!=
icend
;
++
icursor
)
{
if
(
value
(
*
icursor
)
!=
0.0
)
{
int
petscColIdx
=
meshDistributor
->
mapLocalToGlobal
(
col
(
*
icursor
))
*
nComponents
+
j
;
int
petscColIdx
=
meshDistributor
->
mapLocalToGlobal
(
col
(
*
icursor
))
*
nComponents
+
j
;
if
(
value
(
*
icursor
)
!=
0.0
||
petscRowIdx
==
petscColIdx
)
{
// The row DOF is a rank DOF, if also the column is a rank DOF,
// increment the d_nnz values for this row, otherwise the o_nnz value.
if
(
petscColIdx
>=
meshDistributor
->
getRstart
()
*
nComponents
&&
...
...
@@ -445,6 +445,9 @@ namespace AMDiS {
MatAssemblyBegin
(
petscMatrix
,
MAT_FINAL_ASSEMBLY
);
MatAssemblyEnd
(
petscMatrix
,
MAT_FINAL_ASSEMBLY
);
#if (DEBUG != 0)
INFO
(
info
,
8
)(
"Fill petsc matrix 3 needed %.5f seconds
\n
"
,
TIME_USED
(
first
,
clock
()));
#endif
// === Transfer values from DOF vector to the PETSc vector. ===
...
...
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