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This thorn loads stored simulation output to set initial data.
The implementation is very simple - it invokes an external executable (specified
by the 'load_data_exe' parameter) and reads the values from its stdout. See the
popen() call in src/revive.c for arguments passed to the binary. The
implementation this was developed with is [1], but any other executable that
behaves in a compatible way should work.
Example use:
ActiveThorns = "ADMBase ReviveData"
ADMBase::initial_data = "revivedata"
ADMBase::initial_lapse = "revivedata"
ADMBase::initial_dtlapse = "zero"
ADMBase::initial_shift = "revivedata"
ADMBase::initial_dtshift = "zero"
ReviveData::load_data_exe = "<...>/revive.py"
ReviveData::simdata_path = "<path to stored simulation data"
ReviveData::load_time = 10.0
[1] https://git.khirnov.net/cactus_revive.git/
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