[FLASH-USERS] flash 4.6 mesh parameter problem

[Maksim Kozlov]

yet another solution is to reduce the lrefine_max parameter in flash.par
file. This will reduce maximum resolution but saves memory.

On Thu, Jul 14, 2022 at 10:48 PM Benjamin Michalowicz <
benjamin.michalowicz at stonybrook.edu> wrote:

> 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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