Invalid MIT-MAGIC-COOKIE-1 using mpirun in local (no reomte X connections)

Question

When I run a mpirun comand in my Ubuntu 20.04 LTS I get the error Invalid MIT-MAGIC-COOKIE-1 key

I tried different procedures found in the forums and I also reinstalled my invidia drivers. Nothing worked. The problem is in the local system, I'm not using ssh connections and I do not have a .Xauthority file.

For example if I run: /usr/bin/mpirun -n 1 echo "HelloWorld"

I get: Invalid MIT-MAGIC-COOKIE-1 keyHelloWorld

This is annoying because when I want to redirect the output on a file I have this message in every row of a mpi comand.

How can I solve this? Thanks, Nabla

... you don't have a `.Xauthority` file - is that because you are running a Wayland session? — steeldriver, May 24 '21 at 13:40
Not sure tbh... try the answers here [How to know whether Wayland or X11 is being used](https://unix.stackexchange.com/questions/202891/how-to-know-whether-wayland-or-x11-is-being-used) — steeldriver, May 24 '21 at 18:21
Ok, if I enter: "$ loginctl show-session 2 -p Type " I get: Type=x11 — nablaW, May 25 '21 at 15:30

score 0 · Answer 1 · edited Sep 22 '21 at 21:12

0

I'm not sure if this has been answered yet. But I solved this problem by uninstalling mpich with

sudo apt-get autoremove mpich

and reinstalling it with

sudo apt install mpich

edited Sep 22 '21 at 21:12

zx485

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answered Sep 22 '21 at 20:59

mpm5354

1

Invalid MIT-MAGIC-COOKIE-1 using mpirun in local (no reomte X connections)

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