[CIG-LONG] [Gale] - Shadow space warning when running Gale in parallel.

[Walter Landry]

<Guillaume.Duclaux at csiro.au> wrote:
> 
> Hello all,
> 
> I'm running Gale on a SGI Altix 3700 Bx2 system with 192 x 1.5 GHz
> Itanium2 cpus using MPI for parallel job distribution. 
> As a job (3D model) runs on more than one cpu, I always have this kind
> of warning messages:
> 
> 0: Warning - in FeVariable_InterpolateDerivativesAt: user asking to
> interpolate derivatives to coord (300000,0,0), which is in shadow space,
> but FeVariable_SyncShadowValues() hasn't been called yet.
> 4: Warning - in FeVariable_InterpolateDerivativesAt: user asking to
> interpolate derivatives to coord (0,0,200000), which is in shadow space,
> but FeVariable_SyncShadowValues() hasn't been called yet.
> 
> I'm wondering if that ever happen to others.

I get these errors on some platforms.  I remember tracking it down and
finding no obvious fix.  It was not a real problem.  As I recall, it
only happens before the first time step, when it is trying to
calculate things before a solution has been made.  You can safely
ignore it.

Cheers,
Walter Landry
walter at geodynamics.org