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add Matrix approach for SBP8

This commit is contained in:
Magnus Ulimoen 2021-01-29 08:28:55 +01:00
parent 3d34f2e7a0
commit 14fefe97ab
1 changed files with 37 additions and 2 deletions
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39
sbp/src/operators/traditional8.rs
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@ -1,4 +1,4 @@
use super::{diff_op_col, diff_op_row, SbpOperator1d, SbpOperator2d};
use super::{diff_op_col, diff_op_row, Matrix, RowVector, SbpOperator1d, SbpOperator2d};
use crate::Float;
use ndarray::{ArrayView1, ArrayView2, ArrayViewMut1, ArrayViewMut2};
@ -15,6 +15,10 @@ impl SBP8 {
3.57142857142857e-03, -3.80952380952381e-02, 2.00000000000000e-01, -8.00000000000000e-01, -0.00000000000000e+00, 8.00000000000000e-01, -2.00000000000000e-01, 3.80952380952381e-02, -3.57142857142857e-03
];
#[rustfmt::skip]
const DIAG_MATRIX: RowVector<Float, 9> = Matrix::new([[
3.57142857142857e-03, -3.80952380952381e-02, 2.00000000000000e-01, -8.00000000000000e-01, -0.00000000000000e+00, 8.00000000000000e-01, -2.00000000000000e-01, 3.80952380952381e-02, -3.57142857142857e-03
]]);
#[rustfmt::skip]
const BLOCK: &'static [&'static [Float]] = &[
&[-1.69554360443190e+00, 2.24741246341404e+00, -3.38931922601500e-02, -7.81028168126749e-01, 2.54881486107905e-02, 3.43865227388873e-01, -8.62858162633335e-02, -2.00150583315761e-02],
&[-4.34378988266985e-01, 0.00000000000000e+00, 9.18511925072956e-02, 4.94008626807984e-01, -2.46151762937235e-02, -1.86759403432935e-01, 5.27267838475813e-02, 7.16696483080115e-03],
@ -25,6 +29,17 @@ impl SBP8 {
&[2.75587615266177e-02, -8.71295642560637e-02, 5.01135077563584e-02, 7.68229253600969e-02, 4.60181213406519e-02, -7.55873581663580e-01, 0.00000000000000e+00, 8.21713248844682e-01, -2.16615355227872e-01, 4.12600676624518e-02, -3.86813134335486e-03],
&[5.84767272160451e-03, -1.08336661209337e-02, -1.42810403117803e-02, 3.50919361287023e-02, -1.22244235731112e-02, 1.19411743193552e-01, -7.51668243727123e-01, 0.00000000000000e+00, 7.92601963555477e-01, -1.98150490888869e-01, 3.77429506454989e-02, -3.53840162301552e-03],
];
#[rustfmt::skip]
const BLOCK_MATRIX: Matrix<Float, 8, 12> = Matrix::new([
[-1.69554360443190e+00, 2.24741246341404e+00, -3.38931922601500e-02, -7.81028168126749e-01, 2.54881486107905e-02, 3.43865227388873e-01, -8.62858162633335e-02, -2.00150583315761e-02, 0.0, 0.0, 0.0, 0.0],
[-4.34378988266985e-01, 0.00000000000000e+00, 9.18511925072956e-02, 4.94008626807984e-01, -2.46151762937235e-02, -1.86759403432935e-01, 5.27267838475813e-02, 7.16696483080115e-03, 0.0, 0.0, 0.0, 0.0],
[3.88218088704253e-02, -5.44329744454984e-01, 0.00000000000000e+00, 3.89516189693211e-01, 1.36433486528546e-01, 1.03290582800845e-01, -1.79720579323281e-01, 5.59882558852296e-02, 0.0, 0.0, 0.0, 0.0],
[1.28088632226564e-01, -4.19172130036008e-01, -5.57707021445779e-02, 0.00000000000000e+00, 1.24714160903055e-01, 2.81285212519100e-01, -3.94470423942641e-02, -1.96981310738430e-02, 0.0, 0.0, 0.0, 0.0],
[-1.82119472519009e-02, 9.09986646154550e-02, -8.51090570277506e-02, -5.43362886365301e-01, 0.00000000000000e+00, 6.37392455438558e-01, -1.02950081118829e-01, 2.98964956216039e-02, -8.65364391190110e-03, 0.0, 0.0, 0.0],
[-7.93147196245203e-02, 2.22875323171502e-01, -2.07999824391436e-02, -3.95611167748401e-01, -2.05756876210586e-01, 0.00000000000000e+00, 5.45876519966127e-01, -9.42727926638298e-02, 2.97971812952850e-02, -2.79348574643297e-03, 0.0, 0.0],
[2.75587615266177e-02, -8.71295642560637e-02, 5.01135077563584e-02, 7.68229253600969e-02, 4.60181213406519e-02, -7.55873581663580e-01, 0.00000000000000e+00, 8.21713248844682e-01, -2.16615355227872e-01, 4.12600676624518e-02, -3.86813134335486e-03, 0.0],
[5.84767272160451e-03, -1.08336661209337e-02, -1.42810403117803e-02, 3.50919361287023e-02, -1.22244235731112e-02, 1.19411743193552e-01, -7.51668243727123e-01, 0.00000000000000e+00, 7.92601963555477e-01, -1.98150490888869e-01, 3.77429506454989e-02, -3.53840162301552e-03],
]);
}
impl SbpOperator1d for SBP8 {
@ -59,6 +74,25 @@ impl SbpOperator1d for SBP8 {
}
}
fn diff_op_row_local(prev: ndarray::ArrayView2<Float>, mut fut: ndarray::ArrayViewMut2<Float>) {
let mut flipmatrix = SBP8::BLOCK_MATRIX;
flipmatrix *= &-1.0;
for (p, mut f) in prev
.axis_iter(ndarray::Axis(0))
.zip(fut.axis_iter_mut(ndarray::Axis(0)))
{
super::diff_op_1d_slice_matrix(
&SBP8::BLOCK_MATRIX,
&flipmatrix,
&SBP8::DIAG_MATRIX,
super::OperatorType::Normal,
p.as_slice().unwrap(),
f.as_slice_mut().unwrap(),
)
}
}
impl SbpOperator2d for SBP8 {
fn diffxi(&self, prev: ArrayView2<Float>, mut fut: ArrayViewMut2<Float>) {
assert_eq!(prev.shape(), fut.shape());
@ -69,7 +103,8 @@ impl SbpOperator2d for SBP8 {
match (prev.strides(), fut.strides()) {
([_, 1], [_, 1]) => {
diff_op_row(SBP8::BLOCK, SBP8::DIAG, symmetry, optype)(prev, fut);
//diff_op_row(SBP8::BLOCK, SBP8::DIAG, symmetry, optype)(prev, fut);
diff_op_row_local(prev, fut);
}
([1, _], [1, _]) => {
diff_op_col(SBP8::BLOCK, SBP8::DIAG, symmetry, optype)(prev, fut);