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Add ability to create a PixelDistribution from a sky footprint. #806

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@tskisner tskisner commented Feb 5, 2025

In most workflows, a PixelDistribution is created by passing through the detector pointing on each process and determining the locally hit pixels and submaps for a given pixelization scheme. This work adds support for creating a distribution from a pre-existing sky footprint. Each process will have the same hit submaps in this case. This is a stepping stone towards building the RHS out of core while keeping the locally hit pixels in node shared memory.

In most workflows, a PixelDistribution is created by passing through
the detector pointing on each process and determining the locally
hit pixels and submaps for a given pixelization scheme.  This work
adds support for creating a distribution from a pre-existing sky
footprint.  Each process will have the same hit submaps in this case.
This is a stepping stone towards building the RHS out of core while
keeping the locally hit pixels in node shared memory.
@tskisner tskisner requested a review from keskitalo February 5, 2025 16:48
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tskisner commented Feb 5, 2025

Note: this PR also re-enables a couple tests that were accidentally disabled during tests.

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