[FLASH-USERS] Help with flash run

[Ryan Farber]

Hi Sumit,

I think that's more likely an openmpi issue than a FLASH issue. Based on
the error message saying no file found I'd guess that perhaps you did not
compile the code yet (or it error'd so no flash4 exists).

If you do "ls flash4" do you see anything? You might also want to check if
flash.par exists in that directory.

I'd also suggest you test a simple fortran hello world with mpirun to check
if your MPI installation is working.

Best wishes,
--------
Ryan


On Mon, Jun 16, 2025 at 9:23 AM Sumit Banerjee <sumitb at g.clemson.edu> wrote:

> Flash Users,
>
> I need your help in getting to run FLASH on the computing cluster of my
> school.
>
> I configured FLASH following the guide but when I try the command,
>
> mpirun ./flash4
>
>
> the below error shows up,
>
> [image: image.png]
>
> I tried running FLASh by disabling knem following the help on OpenMPI page
> by running the below command,
>
>  mpirun --mca btl_sm_use_knem 0 ./flash4
>
>
> But the same error message shows up.
>
> I reached out to the system administrators and this is what they said,
>
> "Based on what we are seeing this is an application specific issue. You'll
> have to contact the developers that are not installing the module you need.
> "
>
> Did anyone else face this issue? I could use some help here.
>
> *Clear Skies,*
> *Sumit (Sam)*
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> flash-users at flash.rochester.edu
>
> For list info, including unsubscribe:
> https://flash.rochester.edu/mailman/listinfo/flash-users
>
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