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Closed
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Opened Jul 30, 2018 by Lukas Riedel@lriedelOwner

Estimate of matrix backend entry numbers is wrong

Summary

estimate_mbe_entries produces wrong estimates of the matrix backend size.

When constructing the matrix backend, one can given an estimate of the number of matrix entries per element for faster resource allocation. The old values are wrong.

The numbers were extracted from the patternStatistics of the OneStepGridOperator jacobian, but are related to the wrong blocking that was used before the update to DUNE v2.6 (see #68 (closed), !56 (merged))

Correct values

For a DG method, the numbers are

  • simplex: dim + 2
  • cube: 2*dim + 1
Edited Jul 30, 2018 by Lukas Riedel
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Reference: dorie/dorie#80