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In Memoriam: Tomáš Kalibera

[Posted April 28, 2026 by jzb]

We have received the sad news that Tomáš Kalibera, a member of the R Project core team, has passed away after a short illness.

A friend who knew him well wrote to me: he was very happy, and his work fulfilled him. That is, perhaps, the best thing one can say about a life in open source — that the work mattered, that it reached millions, and that the person who did it found meaning in it.

Kalibera was mentioned in this 2019 article about C programs passing strings to Fortran subroutines. He will be greatly missed.


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Sad and shocking news

Posted Apr 29, 2026 9:52 UTC (Wed) by vbabka (subscriber, #91706) [Link]

I have known Tomas personally as I did my PhD at the same department (and with the same advisor) and we shared an office for some time before he went to the Purdue postdoc. We've only met a few times since, with other alumni.

BTW, some ideas from his PhD research are used in mmtests benchmark results processing for detecting kernel regressions - https://github.com/gormanm/mmtests/blame/06f45d754e5a74c0...


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