[FLASH-USERS] flash 4.6 mesh parameter problem

[Benjamin Michalowicz]

Hi Junpei,

Depending on what system you're running this on and the resources you're
using for a given run, you might be running out of memory almost
immediately. This can be verified with the "dmesg" command on the node that
you just ran your simulation on. Two solutions are to either a) decrease
nblockx and nblocky, or b) distribute the larger problem across more nodes.

Hope this helps!
-Ben


On Thu, Jul 14, 2022 at 3:47 AM Fujiiki Junpei <
junpei.fujiiki at eie.eng.osaka-u.ac.jp> wrote:

> Dear FLASH users,
>
> I have been trying to run 2D-cylindrical simulation in FLASH 4.6, but I
> encountered a problem.
>
> When I run 2D-cylindrical simulation under the conditions
> nblockx=1,nblocky=2, it's running fine.
>
> But, when nblockx=10,nblocky=20, 2D-cylindrical simulation stop
> immediately and segmentation fault occurred.
>
> In this case, the other mesh parameters are the same.
>
> So, my question is,
>
> (1) Why segmentation fault occurred when nblockx=10,nblocky=20?
>
> (2) What should be the proper way to set up a mesh parameter in
> 2D-cylindrical simulation?
>
> Best,
>
> Junpei
>
> --
> ---------------------------------------------------------------
> 大阪大学工学研究科 電気電子情報通信工学専攻 電気工学コース 蔵満研究室所属
> 藤域 淳平
> junpei.fujiiki at eie.eng.osaka-u.ac.jp
> ---------------------------------------------------------------
>
>
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