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Parallelize lake tile uploads #17

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admin_emi merged 1 commit from fix/lake-parallel-puts into dev 2026-07-23 21:33:01 +00:00
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admin_emi commented 2026-07-23 21:31:02 +00:00
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Sequential PUTs measured at 2.5 obj/s (~78h for the city stage); a 16-thread pool per tile brings a tile to under a minute.

Sequential PUTs measured at 2.5 obj/s (~78h for the city stage); a 16-thread pool per tile brings a tile to under a minute.
admin_emi added 1 commit 2026-07-23 21:31:03 +00:00
Parallelize lake tile uploads
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c38b42e0f1 
A tile is ~1.2k small parquet objects; sequential PUTs to the bucket are
round-trip-bound (measured 2.5 obj/s, ~8 min per tile — ~78 h for the city
stage). A 16-thread pool per tile turns that into well under a minute; boto3
clients are thread-safe and failures surface via future.result().
admin_emi merged commit 21eea3a4c2 into dev 2026-07-23 21:33:01 +00:00
admin_emi referenced this pull request from a commit 2026-07-23 21:33:02 +00:00
Parallelize lake tile uploads (#17)
admin_emi deleted branch fix/lake-parallel-puts 2026-07-23 21:33:04 +00:00
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Reference: Jinemi/thermograph#17
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