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bd-j / forcepho

Generative modeling galaxy photometry for JWST
https://forcepho.readthedocs.io
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Speed up Gaussian conversion #20

Closed bd-j closed 5 years ago

bd-j commented 5 years ago

Speed up conversions from on-sky gaussians to on-image gaussians. This is currently a bottleneck due to inefficient python loops and linear algebra calls that could probably be made faster for the 2 x 2 matrices used here.

bd-j commented 5 years ago

@lgarrison has made great progress on this (#22 and #23) Remaining issue is probably the currently slow calculation of spline interpolations of gaussian galaxy amplitudes as a fn of sersic and rhalf

bd-j commented 5 years ago

In addition to the splines, a number of the source gaussian covariance matrices have the form a*eye(2) so matmuls with those could be converted to scalar multiply

bd-j commented 5 years ago

closing this and opening an issue specifically for the Sersic splines.