Robert O'Callahan

@rocallahan

Christian. Repatriate Kiwi. Hacker. rr: rr-project.org. Pernosco: pernos.co. Formerly Mozilla, Google Deepmind.

Auckland, New Zealand

Robert O'Callahan
@rocallahan
Oct 15
I released rr 5.10.0. Mostly just a rollup of small fixes over the last 18 months, but significant fixes for Debian 13 users and Intel hybrid cores.
Release 5.10.0 · rr-debugger/rr
From github.com
Robert O'Callahan
@rocallahan
Oct 9
The second leg of my South Island hiking holiday was the Wangapeka Track. Much of the track is unmaintained and it's a lot more challenging than any Great Walk, but it's fun and worthwhile if you have good fitness and a reasonable amount of experience. robert.ocallahan.org/2026/10/wangap…
Robert O'Callahan
@rocallahan
Oct 8
Last week I walked the Abel Tasman Coastal Track over four days for the second time, this time in a group of eight adults and five children. It went really well, an amazing trip. robert.ocallahan.org/2026/10/abel-t…
Robert O'Callahan
@rocallahan
Sep 25
I resigned from Google today. I enjoyed my work and loved the people, but my GDM team was working on a new generation of chips to make AI much faster and cheaper, and I think AI is already progressing too fast, so I had to quit.
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Robert O'Callahan
@rocallahan
Aug 14
A couple of long walks around Queenstown last weekend. robert.ocallahan.org/2026/08/queens…
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