[WIP] Rayleigh Damping mixed precision fix #32
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Fix the implementation check for RayleighDamping and move it closer to the code
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Poking @oelbert to show mixed precision in dycore in action |
bensonr
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Dec 2, 2024
pyFV3/stencils/ray_fast.py
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| SDAY = 86400.0 | ||
| SDAY = Float(86400.0) |
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If seconds per day is used frequently in the the ndsl, dycore, and physics, would it be better to define it in the ndsl constants section to ensure uniformity?
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Yes we probably should be moving that to constant
bensonr
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Dec 2, 2024
| def compute_rff_vals(pfull, dt, rf_cutoff, tau0, ptop): | ||
| rffvals = compute_rf_vals(pfull, dt, rf_cutoff, tau0, ptop) | ||
| rffvals = 1.0 / (1.0 + rffvals) | ||
| rffvals = f64(1.0) / (f64(1.0) + rffvals) |
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In an f32 run, aren't you only promoting the constants here and not rffvals?
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The upcaster will force in the rffvals to be f64. Alternatively you could, type hint rffvals e.g.
rffvals: f64 = ...
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The upcaster follows basic C up-casting rules
Trigger damping increment calculation exactly once
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gt4pybut only available on the experimental NASA branch