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Store retirement_age as int16 to shrink the parameters object #1230

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Store retirement_age as int16 to shrink the parameters object #1230

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6 changes: 6 additions & 0 deletions ogcore/parameters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,12 @@ def compute_default_params(self):
param_in, dims=(self.T + self.S,), item=item
)
setattr(self, item, param_out)
# retirement_age is a whole number of years (bounded well under the
# int16 range), so store it as int16 rather than float64 to reduce
# the memory footprint of the parameters object (see issue #1080).
# Rounding first keeps behavior identical to how it is already
# consumed in `retire`.
self.retirement_age = np.round(self.retirement_age).astype(np.int16)
# Deal with parameters that vary across industry and over time
tp_param_list2 = [
"Z",
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