Software Engineer, Open Source @posit.co
github.com/shikokuchuo
@fontikar.bsky.socialReposted by @shikokuchuo.netHighlight of my week. My student baked #Shiny hex sticker shortbread for our interactive dashboard class 😭
Charlie Gao
@shikokuchuo.net
@fontikar.bsky.socialReposted by @shikokuchuo.net@shikokuchuo.netI'm talking about what I'm working on right now. This is not a retrospective. Sign up through the link below!
@shikokuchuo.netIt's still too early for me to say that mizu will definitely be in 'x' or 'y', except to say that it's really foundational and we're excited about the possibilities. Mori is part of the family - expect more educational videos!
@shikokuchuo.netHow does this relate to mirai? mizu cuts communication overhead between processes on one machine, so work can be split at granularities usually reserved for threads. mirai still covers remote workers and HPC. We're working on bringing mizu to the places you use parallelism most.
@shikokuchuo.netTokyoR enjoyed the world premiere of mizu today, and Mizu-chan stole the show: lock-free shared-memory parallelism for R, plus a Python binding on the same C core.
Repos are open but pre-release, and the API will change. Feedback welcome on GitHub.
github.com/shikokuchuo/...
@shikokuchuo.netmiraiとの関係は？ mizuは同じマシン上のプロセス間の通信コストを削り、スレッド並みの粒度で仕事を分けられるようにします。リモートワーカーやHPCは、これからもmiraiの領域です。みなさんが並列処理をいちばん使う場所にmizuを届けられるよう、取り組んでいます。
@shikokuchuo.net本日の #TokyoR で、mizu のワールドプレミアをお届けしました！主役はミズちゃん💧
mizu は、ロックフリーな共有メモリで、同じマシン上のRプロセス同士をつなぐパッケージです。同じCコアのPython版 pymizu もあるので、RとPythonでチャネルを共有できます。
プレリリースなのでAPIは変わるかもしれません。ぜひ試して、感想はGitHubへ！
github.com/shikokuchuo/...
@shikokuchuo.netReposted by @shikokuchuo.net鍵もなく
プロセス渡る
秋の水 💧
10/3(土) #TokyoR 「水物語」
@shikokuchuo.net鍵もなく
プロセス渡る
秋の水 💧
10/3(土) #TokyoR 「水物語」
@vicbiostat.bsky.socialReposted by @shikokuchuo.netSeminar announcement
Dianne (Di) Cook: Practical Tools for Data Exploration in Biostatistics
15 October, 4-5pm AEST via Zoom
Further details: www.vicbiostat.org.au/event/practi...
@shikokuchuo.netI'm super glad to report that mori is now part of r-lib. mori.r-lib.org
@jaredknowles.comReposted by @shikokuchuo.netI loved this talk. Mirai reinvented my workflow and mori looks like another huge level up! Thank you
@shikokuchuo.netThrilled to have just presented "Never block, never copy. mirai + mori from Shiny to the cluster" at posit::conf(2026).
The slides are available here: shikokuchuo.net/posit2026
mirai: mirai.r-lib.org
mori: shikokuchuo.net/mori/
@josiah.rsReposted by @shikokuchuo.netUsing {mirai} to absolutely throttle my machine to train Graph Neural Networks in parallel with {torchgnn)
@simonpcouch.comReposted by @shikokuchuo.netWe're excited to share commons, an R and Python package that helps data scientists build trustworthy data agents for their organizations!
Read more on the @posit.co open source blog: opensource.posit.co/blog/2026-09...
@schloerke.comReposted by @shikokuchuo.net🎤 Just presented “shinyreact: Building Custom Shiny UI with React” at posit::conf(2026)
🤔 Ever written JS or CSS inside an R string? shinyreact moves your UI to React: two hooks on the client, reactive_output() on the server.
@fontikar.bsky.socialReposted by @shikokuchuo.netLevel up R workflows with @shikokuchuo.net 🚀
Charlie will give us a practical tour of the open source stack he created to improve parallel computing 📦
Join our Stats Computing + Data Vis Webinar and learn from the best💡
🗓️ THU 22 Oct
⌚️18:00 AEDT | 07:00 UTC
📌 Register statsoc.org.au/event-6817896
@yutannihilation-en.bsky.socialReposted by @shikokuchuo.netFOSS4G Hiroshima 2026 is only a few days away! I'll talk about SedonaDB.
📅 Sep 1st, 14:00–14:30
🚪 Room4
talks.osgeo.org/foss4g-2026/...
@shikokuchuo.netOpenTelemetry has come to R 🎉
Shiny, plumber2, mirai, httr2, ellmer, knitr, testthat, and DBI are now instrumented: production-grade traces from R with no code changes. Set a few env vars and telemetry flows to the backend of your choice.
Full write-up: opensource.posit.co/blog/2026-05...
opensource.posit.coBringing OpenTelemetry to R in productionPosit has instrumented Shiny, plumber2, mirai, httr2, ellmer, knitr, testthat, and DBI with OpenTelemetry, and created tools for you to instrument your own packages, bringing production-grade observab...
@shikokuchuo.netJust released mori 0.1.0 on CRAN — a new R package for shared memory across processes. Parallel R no longer has to mean duplicating your dataset in every worker's RAM.
opensource.posit.co/blog/2026-04...
🧵 1/3
opensource.posit.comori: Shared memory for R objectsmori is a new R package for sharing R objects across processes via OS-level shared memory. Parallel workers get zero-copy, lazy ALTREP access to the same physical pages — share once, read anywhere.