v1.0.0-rc.3

Release candidate for libCEED 1.0

v1.0.0-rc.2

Release candidate for libCEED 1.0

v1.0.0-rc.1

Initial release candidate for libCEED 1.0

v0.13.0-rc.2

Release candidate for v0.13.0

v0.13.0-rc.1

Release candidate for v0.13.0

v0.12.0

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.

v0.11.0

Interface changes

• Added CeedOperatorSetName for more readable CeedOperatorView output.
• Added CeedBasisCreateProjection to facilitate interpolation between nodes for separate CeedBases.
• Rename and move CeedCompositeOperatorGetNumSub and CeedCompositeOperatorGetSubList to public interface.

New features

• Update /cpu/self/memcheck/* backends to help verify CeedQFunctionContext data sizes provided by user.
• Improved support for $H(\text{div})$ bases.
• Added CeedInt_FMT to support potential future use of larger interger sizes.
• Added CEED_QFUNCTION_ATTR for setting compiler attributes/pragmas to CEED_QFUNCTION_HELPER and CEED_QFUNCTION.
• OCCA backend updated to latest OCCA release; DPC++ and OMP OCCA modes enabled.
  Due to a limitation of the OCCA parser, typedefs are required to use pointers to arrays in QFunctions with the OCCA backend.
  This issue will be fixed in a future OCCA release.

Bugfix

• Fix bug in setting device id for GPU backends.
• Fix storing of indices for CeedElemRestriction on the host with GPU backends.
• Fix CeedElemRestriction sizing for CeedOperatorAssemblePointBlockDiagonal.
• Fix bugs in CPU implementation of CeedOperatorLinearAssemble when there are different number of active input modes and active output modes.

Examples

Compressible Navier-Stokes mini-app

• Various performance enhancements, analytic matrix-free and assembled Jacobian, and PETSc solver configurations for GPUs.
• Refactored to improve code reuse and modularity.
• Support for primitive variables for more accurate boundary layers and all-speed flow.
• Added $YZ\beta$ shock capturing scheme and Shock Tube example.
• Added Channel example, with comparison to analytic solutions.
• Added Flat Plate with boundary layer mesh and compressible Blasius inflow condition based on Chebyshev collocation solution of the Blasius equations.
• Added strong and weak synthetic turbulence generation (STG) inflow boundary conditions.
• Added "freestream" boundary conditions based on HLLC Riemann solver.
• Automated stabilization coefficients for different basis degree.

PETSc Bake-off problems

• Support for convergence studies.

Maintainability

• Refactored /gpu/cuda/shared and /gpu/cuda/gen as well as /gpu/hip/shared and /gpu/hip/gen backend to improve maintainablity and reduce duplicated code.
• Enabled support for p > 8 for /gpu/*/shared backends.
• Switch to clang-format over astyle for automatic formatting; Makefile command changed to make format from make style.
• Improved test harness.

v0.10.1

Bugfix for GPU support - install JiT source files in install directory

v0.10.0

Single precision support, capability to assemble operators on GPUs, performance enhancements, various interface and error checking improvements, and mini-app improvements.

v0.9.0

Portability improvements, GPU support for helper utility functions in QFunctions, bug fixes, Rust packaging, and mini-app improvements.