ulimit and stack size

[askhamwhat]

When I initiate a bash session, the output of

ulimit -s

is 8192 (which is in kb). This limit cannot be increased (Ideally I'd like to be able to set it as unlimited). Any suggestions?

[sunilmut]

@askhamwhat - The stack limit on WSL is currently static. Please provide this feedback on our user voice page as well to help us prioritize this going forward.

[AndreiLux]

I'm currently this limitation in a hard way - there seems to be no way to run WRF on WSL with the stack limit currently set this small. I'm setting the stack to higher values at compile time but obviously it affect the behaviour of the program, still segfaulting seconds into a run.

[eszwabow]

I found a workaround to this but it requires access to root. If you can login as root (su -) then u can add yourself to the sudo group if not able to yet (usermod -aG sudo $USER_NAME) then update the stack limit as root (ulimit -s unlimited) and login back into your user (su - $USER_NAME) then you can set the stack limit with: ulimit -s unlimited.

Verify it works with ulimit -a.

I've been using this so that I can run parallel CFD simulations locally on my machine. Good luck!

[Trass3r]

sudo bash is an easier way to run the ulimit command. ulimit -a does show the correct value just set.
But the test program still crashes with stack overflow.

[Trass3r]

@askhamwhat - The stack limit on WSL is currently static. Please provide this feedback on our user voice page as well to help us prioritize this going forward.

For the record: https://wpdev.uservoice.com/forums/266908-command-prompt-console-windows-subsystem-for-l/suggestions/15125013-allow-changes-to-stack-size-via-the-ulimit-command

[cdzhan]

@askhamwhat - The stack limit on WSL is currently static. Please provide this feedback on our user voice page as well to help us prioritize this going forward.

For the record: https://wpdev.uservoice.com/forums/266908-command-prompt-console-windows-subsystem-for-l/suggestions/15125013-allow-changes-to-stack-size-via-the-ulimit-command

@sunilmut @benhillis is the stack limit on WSL still static？Can I set ulimit by adding myself to the sudo group？

[p-maybank]

@benhillis - I would like to be able to change the stack size, similarly to what other WSL users have requested on this thread. I get the following error message,

$ ulimit -s 10000
-bash: ulimit: stack size: cannot modify limit: Invalid argument

Do you have any suggestions?

[therealkenc]

And yes, the second call will fail if you try to grow a hard limit after you shrink it. That is the purpose of ulimit.

[sblisesivdin]

This problem still exists and can be solved (at least for Ubuntu 20.04) for WSL2 with:

sudo prlimit --stack=unlimited --pid $$; ulimit -s unlimited

You need to run this for every session.

[Lollith]

This problem still exists and can be solved (at least for Ubuntu 20.04) for WSL2 with:

sudo prlimit --stack=unlimited --pid $$; ulimit -s unlimited

You need to run this for every session.

WSL1 : OK too