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iwr
dune-vtk
Commits
5c761404
Commit
5c761404
authored
Aug 27, 2018
by
Praetorius, Simon
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Update README.md
parent
34d21cab
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@@ -61,4 +61,66 @@ proposed one. A comparions:
...
@@ -61,4 +61,66 @@ proposed one. A comparions:
| Quadratic Data | - |
**x**
|
| Quadratic Data | - |
**x**
|
| Subdivided Data |
**x**
| - |
| Subdivided Data |
**x**
| - |
## Example
Create a fine structured YaspGrid and write it in parallel with 8 cores with
different write modi:
### 1. Create the grid
```
c++
const
int
dim
=
3
;
FieldVector
<
double
,
dim
>
upperRight
;
upperRight
=
1.0
;
auto
numElements
=
filledArray
<
dim
,
int
>
(
16
);
YaspGrid
<
dim
>
grid
(
upperRight
,
numElements
,
0
,
0
);
// no overlap
grid
.
globalRefine
(
3
);
auto
gridView
=
grid
.
leafGridView
();
```
### 2. Create a function to write
```
c++
auto
fct
=
makeAnalyticGridViewFunction
([](
auto
const
&
x
)
{
return
std
::
sin
(
10
*
x
[
0
])
*
std
::
cos
(
10
*
x
[
1
])
+
std
::
sin
(
10
*
x
[
2
]);
},
gridView
);
```
### 3. Write the grid and data to file
```
c++
Vtk
[
FORMAT
]
Writer
<
decltype
(
gridView
)
>
vtkWriter
(
gridView
);
vtkWriter
.
addPointData
(
fct
,
"fct"
);
vtkWriter
.
write
(
"filename.vtu"
,
[
FORMAT_TYPE
],
[
DATA_TYPE
]);
```
where
`FORMAT`
one of {UnstructuredGrid,StructuredGrid,RectilinearGrid,ImageData}
,
`FORMAT_TYPE`
one of {ASCII,BINARY,COMPRESSED}, and
`DATA_TYPE`
one of {FLOAT32,FLOAT64}.
We measure the file size (per processor) and the memory requirement of ParaView
to visualize the data.
|
**Setup**
|
**Filesize**
|
**Memory**
|
| ----------------------------------- | ------------ | ---------- |
| UnstructuredGrid, ASCII, FLOAT32 | 26M | 330M |
|
*UnstructuredGrid, ASCII, FLOAT64*
|
*29M*
|
*360M*
|
| UnstructuredGrid, BINAR, FLOAT32 | 23M | 330M |
| UnstructuredGrid, BINAR, FLOAT64 | 27M | 360M |
| UnstructuredGrid, COMPR, FLOAT32 | 4.5M | 330M |
| UnstructuredGrid, COMPR, FLOAT64 | 5.7M | 360M |
| StructuredGrid, ASCII, FLOAT32 | 10M | 34M |
| StructuredGrid, ASCII, FLOAT64 | 13M | 67M |
| StructuredGrid, BINAR, FLOAT32 | 4.2M | 34M |
| StructuredGrid, BINAR, FLOAT64 | 8.4M | 67M |
| StructuredGrid, COMPR, FLOAT32 | 1.4M | 34M |
| StructuredGrid, COMPR, FLOAT64 | 2.6M | 67M |
| RectilinearGrid, ASCII, FLOAT32 | 3.0M | 8.4M |
| RectilinearGrid, ASCII, FLOAT64 | 5.3M | 17M |
| RectilinearGrid, BINAR, FLOAT32 | 1.1M | 8.4M |
| RectilinearGrid, BINAR, FLOAT64 | 2.1M | 17M |
| RectilinearGrid, COMPR, FLOAT32 | 970K | 8.4M |
| RectilinearGrid, COMPR, FLOAT64 | 2.0M | 17M |
| ImageData, ASCII, FLOAT32 | 3.0M | 8.4M |
| ImageData, ASCII, FLOAT64 | 5.3M | 17M |
| ImageData, BINAR, FLOAT32 | 1.1M | 8.4M |
| ImageData, BINAR, FLOAT64 | 2.1M | 17M |
|
**ImageData, COMPR, FLOAT32**
|
**970K**
|
**8.4M**
|
| ImageData, COMPR, FLOAT64 | 2.0M | 17M |
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