[Nek5000-users] Compiling large problem sizes

[nek5000-users at lists.mcs.anl.gov]

Ah thanks Marco,

changing the lpmin did the trick.

On Mon, Dec 4, 2017 at 2:58 PM <nek5000-users at lists.mcs.anl.gov> wrote:

> What do you do to increase the amount of available memory?
>
> In your current setting, Nek5000 compiles with one processor since lpmin
> is set to 1. You have to increase it to successfully compile.
>
> Marco
>
> On Dec 4, 2017, at 2:53 PM, nek5000-users at lists.mcs.anl.gov wrote:
>
> Hi all,
>
> I'm trying to compile a 3D mesh with mesh size of 6000 ekements.
> Unfortunately I keep running into compilation errors. To be clear I can
> compile problems upto 3000 elements large. But setting lelt value larger
> than 3000 results in an error.
>
> I have realised this might be a memory issue and have tried to compile
> with increasing amounts of available memory. This does not seem to resolve
> the issue.
>
> To be clear my SIZE looks like this
>
>  parameter (ldim=3)               ! domain dimension (2 or 3)
>       parameter (lx1=6)                ! p-order (avoid uneven and values
> <6)
>       parameter (lxd=10)               ! p-order for over-integration
> (dealiasing)
>       parameter (lx2=lx1-2)            ! p-order for pressure (lx1 or
> lx1-2)
>
>       parameter (lelg=6000)             ! max total number of elements
>       parameter (lpmin=1)              ! min MPI ranks
>       parameter (lpmax=1024)           ! max MPI ranks
>       parameter (ldimt=1)              ! max auxiliary fields (temperature
> + scalars)
>
> Sincerely,
>
> --
>
> *Amitvikram Dutta*
>
> Graduate Research Assistant
>
> Fluid Mechanics Research Lab
>
> University of Waterloo
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-- 

*Amitvikram Dutta*

Graduate Research Assistant

Fluid Mechanics Research Lab

University of Waterloo
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