Generate margin cache for ZTF DR22 on Epyc

[hombit]

@gitosaurus hats-imported ZTF DR22 on Epyc (see #452), it also would be great to have a margin cache for that catalog.

Follow docs/guide/margin_cache.rst with margin_threshold=10.0 and call the output margin catalog {main_catalog_name}_10arcs

[gitosaurus]

Using this script to create the margin cache:

from pathlib import Path

from dask.distributed import Client
from hats_import.pipeline import pipeline_with_client
from hats_import.margin_cache.margin_cache_arguments import MarginCacheArguments


def main(main_catalog_path: Path):
    main_catalog_name = main_catalog_path.name
    main_catalog_dir = main_catalog_path.parent
    margin_cache = f"{main_catalog_name}_10arcs"
    args = MarginCacheArguments(
        input_catalog_path=main_catalog_path,
        output_path=main_catalog_dir,
        margin_threshold=10.0,
        output_artifact_name=margin_cache,
    )
    with Client(
        n_workers=16,
        memory_limit="64GB",
        threads_per_worker=2,
        local_directory="/epyc/data3/hats/tmp",
    ) as client:
        pipeline_with_client(args, client)


if __name__ == "__main__":
    main(
        Path("/data3/epyc/data3/hats/catalogs/ztf_dr22/ztf_lc"),
    )

[gitosaurus]

Getting many instances of this sort of error:

Mapping   :   0%|▏                                                | 45/10839 [00:38<1:24:52,  2.12it/s]
Failed MAPPING stage for pixel: 4_21
  worker address: tcp://127.0.0.1:34799
argument 'lon': 'ndarray' object cannot be converted to 'PyArray<T, D>'

So far I have only seen it happen with the lon argument.

This appears to be an instance of #458 .

[gitosaurus]

With a proposed fix to #458 to convert RA and DEC to double-precision for radec2pix, the margin-cache generation succeeded:

Mapping   : 100%|██████████████████████████████████████████████| 10839/10839 [5:23:57<00:00,  1.79s/it]
Binning   :   0%|                                                                | 0/1 [00:07<?, ?it/s]
Reducing  : 100%|████████████████████████████████████████████████| 10887/10887 [08:09<00:00, 22.25it/s]
Finishing : 100%|████████████████████████████████████████████████████████| 4/4 [00:21<00:00,  5.26s/it]

Final margin cache is at /data3/epyc/data3/hats/catalogs/ztf_dr22/ztf_lc_10arcs. Changed group membership to lsst.