Dear Vishal,

I do not quite recall but it may be necessary to define the expansions for composites of different shape independently. So please try:

<E COMPOSITE=“C[1]" NUMMODES="3" FIELDS="u,v,w,p" TYPE="MODIFIED" />
<E COMPOSITE=“C[10]" NUMMODES="3" FIELDS="u,v,w,p" TYPE="MODIFIED" />
<E COMPOSITE="C[11]" NUMMODES="3" FIELDS="u,v,w,p" TYPE="MODIFIED" />

Possibly it is expecting to have a pyramid collection within a tetrahedral expansion and so this is why you see this message.

If this does not work can you send the xml file along.

Thanks,
Spencer.


On 26 Nov 2018, at 11:45, Vishal Saini <vishal.saini.nitj@gmail.com> wrote:

Hi all,

I've imported a mesh from gmsh that contains a layer of pyramids for transitioning between hexes and tets using:
NekMesh JICF_NektP2_2comp.msh JICF_NektP2_2comp.xml
Output:
Multiple elements in composite detected; remapped:
- Tag 1 => 11 (Tetrahedron), 10 (Pyramid), 1 (Hexahedron)
No problem on NekMesh level.

Defining my expansion as:
<E COMPOSITE="C[1,10,11]" NUMMODES="3" FIELDS="u,v,w,p" TYPE="MODIFIED" />

when I run (Nektar++ v 4.4.1) using:
mpirun -npernode 28 -np 56 IncNavierStokesSolver -v JICF_NektP2_2comp_xml conditions_JICF_2D.xml
(using prepartitioned mesh).
I get the following "note":
Collection Implemenation for Tetrahedron ( 3 3 3 ) for ngeoms = 24960
Note: Implementation does not exist: Pyramid, BwdTrans, SumFac, Modal
Note: Implementation does not exist: Pyramid, IProductWRTBase, SumFac, Modal
Note: Implementation does not exist: Pyramid, IProductWRTDerivBase, SumFac, Modal
Note: Implementation does not exist: Pyramid, PhysDeriv, SumFac, Modal
Note: Implementation does not exist: Pyramid, BwdTrans, SumFac, Modal
Note: Implementation does not exist: Pyramid, IProductWRTBase, SumFac, Modal
Note: Implementation does not exist: Pyramid, IProductWRTDerivBase, SumFac, Modal
Note: Implementation does not exist: Pyramid, PhysDeriv, SumFac, Modal

What does it mean? How can I fix it?
Do Pyramids need to be treated in a somewhat different way?

BR,
Vishal


---
Vishal SAINI
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Spencer Sherwin FREng, FRAeS
Head, Aerodynamics,
Director of Research Computing Service,
Professor of Computational Fluid Mechanics,
Department of Aeronautics,
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