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According to the original paper, the Incomplete Poisson preconditioner is slightly different #1

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klausbu opened this issue Apr 27, 2022 · 0 comments
Open

According to the original paper, the Incomplete Poisson preconditioner is slightly different #1

klausbu opened this issue Apr 27, 2022 · 0 comments

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@klausbu
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klausbu commented Apr 27, 2022

The Incomplete Poisson preconditioner according to the original paper is M = (I - LD^-1)(I - D^-1L^T) i.e. it uses the transpose of L in the second term.

It would be interesting to see whether that makes a performance difference compared to your implementation M = (I - LD^-1)(I - D^-1L)?
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