| .. note that if this is changed from the default approach of using an *include* | |
| (in index.rst) to a separate performance page, the header needs to be changed | |
| from === to ***, the filename extension needs to be changed from .inc.rst to | |
| .rst, and a link needs to be added in the subpackage toctree | |
| .. _astropy-modeling-performance: | |
| Performance Tips | |
| ================ | |
| Initializing a compound model with many constituent models can be time consuming. | |
| If your code uses the same compound model repeatedly consider initializing it | |
| once and reusing the model. | |
| Consider the :ref:`performance tips <astropy-units-performance>` that apply to | |
| quantities when initializing and evaluating models with quantities. | |