1## libCEED + PETSc Examples 2 3### CEED bakeoff problems - bpsraw 4 5This code solves the CEED bakeoff problems on a structured grid generated and 6referenced using only low-level communication primitives. 7 8To build, run `make bpsraw` 9 10To run, `./bpsraw -ceed [ceed-resource] -problem bp[1-6] -degree [degree]` 11 12In addition to the common arguments, the following arguments may be set: 13 14- `-local` - Target number of locally owned DoFs per process 15 16### CEED bakeoff problems with DMPlex - bps 17 18This code solves the CEED bakeoff problems on a unstructured grid using DMPlex. 19This example requires a PETSc version later than 3.11.3. 20 21To build, run `make bps` 22 23To run, `./bps -ceed [ceed-resource] -problem bp[1-6] -degree [degree]` 24 25In addition to the common arguments, the following arguments may be set: 26 27- `-mesh` - Read mesh from file 28- `-cells` - Number of cells per dimension 29 30### CEED bakeoff problems with DMPlex and PCMG - multigrid 31 32This code solves the CEED bakeoff problems on a unstructured grid using DMPlex 33with p-multigrid implemented in PCMG. This example requires a PETSc version later than 3.11.3. 34 35To build, run `make multigrid` 36 37To run, `./multigrid -ceed [ceed-resource] -problem bp[1-6] -degree [degree]` 38 39In addition to the common arguments, the following arguments may be set: 40 41- `-mesh` - Read mesh from file 42- `-cells` - Number of cells per dimension 43 44### Command line arguments 45 46The following arguments can be specified for all of the above examples: 47 48- `-ceed` - CEED resource specifier 49- `-problem` - CEED benchmark problem to solve 50- `-degree` - Polynomial degree of tensor product basis 51- `-qextra` - Number of extra quadrature points 52- `-test` - Testing mode (do not print unless error is large) 53- `-benchmark` - Benchmarking mode (prints benchmark statistics) 54 55### libCEED example to compute surface area using DMPlex - area 56 57This example uses the mass matrix to compute the surface area of a cube or a discrete cubed-sphere, defined via DMPlex. 58 59To build, run `make area` 60 61To run, `./area -problem cube -ceed [ceed-resource] -petscspace_degree [degree]` 62 63or 64 65`./area -problem sphere -ceed [ceed-resource] -petscspace_degree [degree]` 66 67#### Command line arguments 68 69The following arguments can be specified for the area example: 70 71- `-ceed` - CEED resource specifier 72- `-problem` - Problem to solve, either 'cube' or 'sphere' 73- `-petscspace_degree` - Polynomial degree of tensor product basis 74- `-qextra` - Number of extra quadrature points 75- `-test` - Testing mode (do not print unless error is large) 76- `-mesh` - Read mesh from file 77 78