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Vectorize residual assembly #8

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davidscn opened this issue Jan 3, 2021 · 0 comments · Fixed by #22
Closed

Vectorize residual assembly #8

davidscn opened this issue Jan 3, 2021 · 0 comments · Fixed by #22

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@davidscn
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davidscn commented Jan 3, 2021

The residual assembly is still based on FEValues objects. However, using matrix-free would be much faster.
See the discussion on the mailinglist. The implementation there is implemented in #6. However, in case of heavily refined cases, the system doesn't converge any more (with the given accuracy). This might be related to accumulated round-off errors. It needs to be investigated further.
@davidscn davidscn mentioned this issue Jan 4, 2021
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@davidscn davidscn linked a pull request Feb 1, 2021 that will close this issue
Vectorize residual assembly pt2 #22
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Vectorize residual assembly pt2 davidscn/matrix-free-dealii-precice
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