2-Dimensional Poisson Problem

Given ff, solve for uu in the 2-dimensional Poisson equation: uxx+uyy=f(x,y)u_{xx} + u_{yy} = f(x,y)

Parameters

  • nn: dimension of grid (where grid is discretized)

Filters

Computational Model

Randomization

Approximation

Algorithms Table

Displaying 12 of 12 algorithms

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9-point ADI iteration1965O(n2logn)O(n^2 \log n)O(n2)O(n^2)
5-point FFT1965O(n2logn)O(n^2 \log n)O(n2)O(n^2)
5-point FFT1965O(n2logn)O(n^2 \log n)O(n2)O(n^2)
5-point FFT1965O(n2logn)O(n^2 \log n)O(n2)O(n^2)
5-point FFT1965O(n2logn)O(n^2 \log n)O(n2)O(n^2)
9-point Tensor product1964O(n3)O(n^3)O(n2)O(n^2)
9-point SOR iteration1956O(n3)O(n^3)O(n2)O(n^2)
5-point ADI iteration1955O(n2log2n)O(n^2 \log^2 n)O(n2)O(n^2)
5-point SOR iteration1954O(n3logn)O(n^3 \log n)O(n2)O(n^2)
5-point star Cramer's rule1945O(4n2)O(4^{n^2})O(4(n2))O(4^{(n^2)}) for sure, O(n2)O(n^2) possibly (if super conservative)
5-point Gauss elimination1945O(n4)O(n^4)O(n4)O(n^4)
5-point Gauss Seidel iteration1945O(n4logn)O(n^4 \log n)O(n2)O(n^2)

Reductions Table

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Other relevant algorithms

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