Marek Behr

Professor of Mechanical Engineering and head of Chair for Computational Analysis of Technical Systems (CATS) at RWTH Aachen University.
One of the (many) directors of Jülich-Aachen Research Alliance Center for Simulation and Data Science (JARA-CSD) and speaker of the directorate.
Coordinator of the International Research Training Group 2379 Modern Inverse Problems with Oden Institute at University of Texas at Austin.
Interests: CFD, HPC, FSI, 4D FEM.

Marek Behrbehr
2025-06-16

My wired connection has (supposedly) IP obfuscation set to off. And yet, unless I turn off iCloud Private Relay completely, it does hide the IP, leading to all sorts of problems accessing university services. How long ago was the Private Relay introduced?


Dysfunctional Limit IP address tracking dialog.
Marek Behrbehr
2025-06-10

I thought I'll use built-in Outlook support tool to nag MS about a) senseless prompts to update time zone (from Brussels to Berlin, adjustment of zero hours), and prompts to disable auto reply whenever one has the audacity to open Outlook while on "vacation". I typed my message in the dialog box, minimizing the expletives. That started a chat session where my message has disappeared. Typing it again placed the chat session in a complete limbo. You know what? I will stop worrying about Outlook.

Unresponsive Outlook feedback window.
Marek Behrbehr
2025-05-17
Black cat on a stony patch.
Marek Behrbehr
2025-05-05

@betalogue I think Apple uses it semi-consistently for “downloaded”. I see it in Podcast app, where it’s pretty useful. I’m not sure if there is a better alternative… To change it, you can use Remove Download or something like that under three dots icon.

Marek Behrbehr
2025-05-03

Outstanding in the field.

Black cat in the green field.
Marek Behrbehr
2025-04-07

Apple Intelligence comes to Germany with OS 18.4. I post this in case anyone thinks that 18.4 will resolve their problems with setting up a HomePod mini on an iCloud account.

Darn, not again.
Marek Behrbehr
2025-03-02

I could not write better about the Friday circus in the White House than Timothy Snyder:

open.substack.com/pub/snyder/p

Maybe the greatest value of that televised event was to give us a bit of an insight into toddler's mind, to figure out the irrational draw Russia has on Trump.

Why turn away from the EU and towards a troubled country with a fraction of the population and an order-of-magnitude lower GDP? A yes, the imagined personal bond. Which is not even reciprocated.

Marek Behr boosted:
Marek Behrbehr
2025-02-26

Keeping the cancel culture alive.

Subscription canceling at Washington Post.
Marek Behrbehr
2025-02-24

A LinkedIn post by Yann LeCun (linkedin.com/posts/yann-lecun_) is making waves. It's ostensibly about the chance EU has in poaching US scientists. But it's really a simplistic put-down of the EU landscape. Is someone paid by both NYU and Meta really in position to judge? If there was ever a "one-percenter scientist", that's the one...

My experience as professor in Germany beats my experience as professor in the US by an order of magnitude. And that was during the Clinton years.

Marek Behrbehr
2025-02-22

US government's irrational crusade against electric cars makes our daily use of EVs into tiny acts of civil disobedience.

Charge scheduled.
Marek Behrbehr
2025-02-22

It’s a kind of a burying-one’s-head-in-the-sand .

Black cat on a blanket.
Marek Behrbehr
2025-02-09

How did I miss that there exists a Severance TV show podcast? Covering both seasons? I had to search for it on a whim while preparing for a trip, if you believe it...


Severance balloon generator output.
Marek Behrbehr
2025-02-06

The mysteries of MS Exchange: On MacOS Sequoia, I cannot see my Exchange calendar. But I can see delegates' calendars for the same account. On the iPad, I see my calendar, but not the delegates'.

Screenshot showing MS Exchange contradiction.
Marek Behrbehr
2025-02-03

@hpcnotes I guess it would work but I would find mini too small for reading papers...

Marek Behrbehr
2025-02-02

Belated

Black cat reclining.
Marek Behrbehr
2025-02-02

@hpcnotes Regular iPad (Pro) with Notability for reviewing and GoodNotes for note-taking… Since Covid or longer, would not go back.

Marek Behrbehr
2025-01-15

Keeping the cancel culture alive.

Subscription canceling at Washington Post.
Marek Behrbehr
2025-01-11

That felt kind of good...


Facebook account deletion confirmation.
Marek Behr boosted:
Dave Winer's linkblog in Mastodave@social.masto.land
2025-01-04
Marek Behrbehr
2025-01-01

And for the third year in a row, again on Mastodon only (possibly mirrored to Bluesky), my Wordle stats up to and including 2024.

Amazing Wordle stats.

Client Info

Server: https://mastodon.social
Version: 2025.04
Repository: https://github.com/cyevgeniy/lmst