decimation option for adjoint solver #1722
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## master #1722 +/- ##
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Coverage 73.38% 73.38%
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stevengj
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Aug 7, 2021
smartalecH
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Aug 10, 2021
smartalecH
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Aug 10, 2021
bencbartlett
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Sep 9, 2021
* decimation option for adjoint solver * fixes * more fixes * decimation option for EigenmodeCoefficient, FourierFields, Near2FarFields * add decimation to unit tests in test_adjoint_solver.py
mawc2019
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Nov 3, 2021
* decimation option for adjoint solver * fixes * more fixes * decimation option for EigenmodeCoefficient, FourierFields, Near2FarFields * add decimation to unit tests in test_adjoint_solver.py
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Following #1684 and #1720, this PR adds a new
decimation_factorparameter (default value of 1, i.e. no decimation) to theOptimizationProblemand objective functionsEigenmodeCoefficient,FourierFields,Near2FarFieldsof the adjoint solver to enable decimation of the DFT time-series updates. Since the entire design region is a DFT monitor for each of the Ex, Ey, Ez fields in 3d used in both the forward and adjoint runs, decimation of the time series can significantly reduce the cost of the DFT fields updates during adjoint optimization.