Compress and ingest background files via R2D2 - #853
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…ive) for obtaining restarts
…t run on compute node
…' into feature/r2d2-file-compression
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August 21, 2026 22:38
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#790 already handles forecast compression for marine, so this PR just picks add ingest suite the feature to compress background files on the way in, and decompress them on the way back out, so we're not using too much disk space on backgrounds.
SaveBackgroundnow takescompress_output/compress_algorithm(gzip or pigz)/compress_pigz_threads. When it's on, the file gets staged locally, compressed, stored, and cleaned up.GetBackgroundknows to look for the compressed record and decompress it back. It's off by default, so nothing changes unless you opt in.Testing:
Find a 09Z NRT file to test against first:
ls /css/gmao/geos-cf/NRTv2/priv/ana/Y<year>/M<month>/D<day>/ | grep _0900zEdit
experiment.yamlwith that date asstart_cycle_point/final_cycle_point, and setcompress_output: true.Leave
dry_runat its default (true) for the first pass:Then run:
swell launch <path>Check the logs, it should log
[DRY RUN] Would store for all 24 hourly steps...Once that looks right, set
dry_run: false, and re-launch, and confirm that it stores background files.