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Articles and videos contributed by both experts, companies and passionate developers from the OCaml community. From in-depth technical articles, project highlights, community news, or insights into Open Source projects, the OCaml Planet RSS feed aggregator has something for everyone.

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Tarides 227 Anil Madhavapeddy's Blog 220 Watch OCaml 204 Caml Weekly News 188 OCamlPro 170 Marc Elvers 147 Jane Street Tech Blog 124 MirageOS 79 Coq 78 Frama-C 76 Robur Cooperative 70 Caml INRIA 53 Jon Ludlam's Blog at recoil.org 53 Daniel Bünzli 42 David Allsopp's Blog 31

Keyword

opam 281 compiler 200 mirageos 195 dune 185 functional programming 162 ppx 132 unikernel 132 async 125 multicore 123 functor 115 eio 114 parser 114 odoc 112 domain 104 effect 103 merlin 103 lwt 102 monad 99 js_of_ocaml 89 concurrency 88 ocluster-worker 0

Year

2026 312 2025 425 2024 306 2023 242 2022 149 2021 196 2020 141 2019 117 2018 110 2017 99 2016 99 2015 105 2014 137 2013 98 2012 60 2011 52 2010 72 2009 35 2008 19 2007 9 2006 3 2005 4 2004 4 2003 2 2002 2

Author

Anil Madhavapeddy 234 Tarides 226 Unknown 213 Caml Weekly News 181 Mark Elvers 147 Jane Street Tech Blog 112 Coq 78 Frama-C 74 Jane Street 70 Robur Cooperative 70 Jon Ludlam 54 Caml INRIA 53 Daniel Bünzli 42 Bozhidar Batsov 28 Mathématiques et informatique - Collège de France 28

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Filtering by: Keyword: ocluster-worker (remove) Clear all
Removing HCS containers

The Windows workers in the windows-x86_64 pool have a habit of quietly falling off the cluster. The ocluster-worker service is still RUNNING, but the scheduler lists the worker as disconnected.

container container_id containers ctr ctr_path exec_result ocaml-ci ocluster-worker orphan-test snapshot

10 Jun 2026

Marc Elvers

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Emulating RISC-V workers when the hardware goes away

Scaleway provide the RISC-V workers for OCaml CI, and they have been down for about a week with no real evidence that they’ll be back anytime soon. I can’t provision any new ones as they are “temporarily out of stock”.

cloud-init obuilder ocluster-worker ocurrent pool power9 qemu risc-v scaleway workers

03 Jun 2026

Marc Elvers

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Work distribution with OCluster

We use OCluster to manage the build cluster for the CI services backing OCaml-CI and opam-repo-ci. However, it is a general-purpose tool and isn’t tied to being a build system; it can distribute any jobs across multiple worker machines.

cgi curl dockerfile echo ocaml-ci ocluster ocluster-client ocluster-worker self spec

09 Mar 2026

Marc Elvers

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