[Users] R: Segmentation Fault when compiling the tutorial

Steven R. Brandt sbrandt at cct.lsu.edu
Wed Jan 26 16:21:03 CST 2022

When you rolled back your version of windows, did you recompile 
everything from scratch? If not, please do.


On 1/25/2022 1:16 PM, silyx99 at gmail.com wrote:
> Hello,
> I've executed the top command and i'm reporting the output.
> As you can see Memory does never exceed 6.5%, i've already tried running the
> simulation after having allocated more memory (namely 2.5 GB) to the wsl
> system but the resulti s the same. By following the output log it seems the
> simulation reaches this problem at time 112.000
> The odd thing is that the simulation was running fine on microsoft 11. Due
> to performance issues though i decided to roll back to the windows 10
> version.
> -----Messaggio originale-----
> Da: Roland Haas <rhaas at illinois.edu>
> Inviato: martedì 25 gennaio 2022 18:15
> A: silyx99 at gmail.com
> Cc: users at einsteintoolkit.org
> Oggetto: Re: [Users] Segmentation Fault when compiling the tutorial
> Hello silyx99,
>> I can't seem to make the tov_ET simulation work. Every time it reaches
>> a definite time during the simulation, the code reaches segmentation
> fault.
> SEGFAULTs can often mean you are running out of memory.
> Though the tov_ET parfile uses very little memory for me: 200MiB (but does
> reserve quite a bit more memory as virtual memory, namely ~1GiB).
> You may need to run "top" in a second bash window to see how much memory
> your run is using (you can type "e" to change units to more useful ones).
> If you are actually running out of memory (which I kind of doubt, but who
> knows) then you can try increasing memory for WSL2.
> Since wsl2 is a (thin) virtual machine it is limited by how much memory it
> can use.
> Can you try if reserving more memory for the VM helps?
> See
> https://clay-atlas.com/us/blog/2021/08/31/windows-en-wsl-2-memory/
> for how to do that.
> I also noticed that the speed is a bit slower than expected with only
> ~71M/hr while my (old) workstation reaches ~1700M/hr.
> For me the TOV
> Yours,
> Roland
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