Changes between Initial Version and Version 1 of Ticket #5139, comment 6


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Timestamp:
2019-05-27T15:30:52Z (7 years ago)
Author:
Andreas Heuermann

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  • Ticket #5139, comment 6

    initial v1  
    1 I compared results of the failing tests with adaptive stepsize and fixed stepsize (4 homotpy steps).
     1I compared results of the failing tests with adaptive step-size and fixed step-size (4 homotpy steps).
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    3 Astonishingly the approach with fixed step size is way more robust than with adaptive steps. Also the fixed version needs always less or equal many homotopy steps.
     3Astonishingly the approach with fixed step-size is way more robust than with adaptive steps. Also the fixed version needs always less or equal many homotopy steps.
    44The total simulation time is comparable. Roughly +/- 10% but I only run the tests once each.
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    6 So in conclusion I would suggest to use homotopy with fixed step size to get a robust initialization. There are still failing models. I'm going to have a look into them to see what's the problem there.
     6So in conclusion I would suggest to use homotopy with fixed step-size to get a robust initialization. There are still failing models. I'm going to have a look into them to see what's the problem there.