The OCaml Planet RSS

ocaml.org memory and CPU improvements; the first Tessera block processed straight into the Zarr store; a CephFS kernel bug that returned zeros for files that were fine; and day10 updates.

day10 reverse dependencies are live and found a dune regression; the aardvark 2017 run finished; and the v2~beta1 Zarr store was rebuilt on a grid that no longer depends on its own data.

NPY to Zarr has been completed for v1 and v1.1; day10 revdeps; Tessera tools packaged and failures in bench.ci.dev.

Fast Tessera inference that brings one Xeon node level with a GPU; reverse dependencies in day10; Windows, macOS and FreeBSD worker updates and a new ad hoc pipeline engine.

The icechunk to zarr conversion finished, although not when I said it had; benchmarking Tessera inference on Intel’s AMX silicon; and day10 spreading to four architectures while finding real bugs.

Converting icechunk to zarr using Fargate workers; rebuilding the Tessera dispatcher around Zarr shards instead of 0.1 degree tiles, and day10 going live with all amd64 distributions.

day10 now runs side-by-side with OBuilder on the RISC-V opam-repo-ci workers, and the layer cache shows why it wins. Plus the Lwt bug that stopped Windows workers reconnecting to the scheduler, an LTSC 2022 image that hadn’t built in months, and ocaml.org taken down by a 371 MB search index.

Correcting last week’s opam-repo-ci overlay, running day10 alongside OBuilder on every job, and fixing the Windows sparse-file error at its source. Plus Tessera tiles dispatched in Zarr order, and a C11 compiler written by Claude Fable that builds OCaml.

Finally, a benchmark that compares day10 with obuilder, making day10 die cleanly and porting opam-repo-ci. Plus Tessera MODIS results showing reduced temporal stability.

Testing day10 on the RISC-V path in OCaml-CI, diagnosing failed Windows containerd commits, and measuring the Tessera / Microsoft Planetary Computer download bottleneck.