libCEED: Efficient Extensible Discretization

New features

• Added Sycl backends /gpu/sycl/ref, /gpu/sycl/shared, and /gpu/sycl/gen.
• Added support for application codes which manage multiple Ceed objects, parallelized across OpenMP threads.
• Update CeedOperatorLinearAssembleDiagonal to provide default implementation that supports CeedOperator with multiple active bases.
• Added CeedOperatorLinearAssemblePointBlockDiagonalSymbolic to create COO mapping for mapping out of {c:func}CeedOperatorLinearAssemblePointBlockDiagonal.
• Added CeedBasisApplyAtPoints and CeedElemRestriction[Create, Apply]AtPoints for evaluation of FE bases at arbitrary locations, such as material points.
• Added support for non-tensor H(div) finite element spaces with CeedBasisCreateHdiv and CeedElemRestrictionCreateOriented
• Added support for non-tensor H(curl) finite element spaces with CeedBasisCreateHcurl and CeedElemRestrictionCreateCurlOriented
• Update /cpu/self/memcheck/* backends to help verify CeedVector array access assumptions and CeedQFunction user output assumptions.

Interface changes

• Update CeedOperatorContext* functions to CeedOperator*Context* functions for consistency.
• Removed CeedBasisSetNumQuadraturePoints as redundant and bug-prone interface.
• Update CEED_BASIS_COLLOCATED to CEED_BASIS_NONE for clarity.

Examples

• Require PETSc version 3.20 or later.
• Add DMSwarm example demonstrating interpolation from background mesh to swarm points and projection from swarm points to background mesh.

Fluid Dynamics Example

• Updated restart and checkpointing interface.
• Add data-driven subgrid-stress model.
• Add differential filtering of solution.
• Add turbulence statistics collection over spanwise-symmetric geometries.
• Add Taylor-Green vortex initial condition.
• Add Riemann-based outflow boundary conditions.
• Added vortex shedding and flow past cylinder example, including calculations for lift, drag, and heat transfer.
• Add Internal Damping Layer (IDL) for helping turbulent simulation stability.
• Derive CeedBasis from PetscFE, and various other internal maintainability updates.