Restriction - convert restiction to use offsets instead of interlace mode. CPU and Python impl only, CUDA and MAGMA left to do.

Merge pull request #511 from CEED/valeria/viz-refine

Add support for level of refinements for viz

fluids: fix -viz_refine by composing interpolation matrices

This also changes -petscspace_degree to -degree (using
PetscFECreateLagrange, which is now available).

Example parallel run with -viz_ref

fluids: fix -viz_refine by composing interpolation matrices

This also changes -petscspace_degree to -degree (using
PetscFECreateLagrange, which is now available).

Example parallel run with -viz_refine:

mpiexec -n 2 ./navierstokes -degree 3 -qextra 1 -problem density_current -dm_plex_box_faces 12,1,12 -lx 4000 -ly 200 -lz 4000 -bc_wall 1,2 -bc_slip_x 5,6 -bc_slip_y 3,4 -center 0,0,2000 -dc_axis 0,1,0 -ts_adapt_monitor -ts_adapt_safety 0.8 -implicit -pc_type bjacobi -stab supg -snes_atol 1e-3 -ksp_atol 1e-4 -ksp_rtol 1e-3 -ts_type alpha -ts_dt 5e-3 -ksp_type bcgs -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -viz_refine 2

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Merge pull request #512 from CEED/valeria/some_cleanup

Small fixes and cleanups

Remove inclusion of ceed.h in examples/ header files

Make style

Refactor wJ -> wdetJ in petsc/ and fluids/ examples

Include ceed.h in examples/fluids header files

This avoid 'unknown type' warnings and is safe under the double inclusion guard

Add support for level of refinements for viz

Now -viz_refine is not a PetscBool anymore, but a PetscInt

Small doc fixes (#499)

* A small shift in notation

* Docs: Clarify ex2-surface mathematical description

* Refactor \boldsymbol -> \bm

* Refactor \mathbf -> \bm

* Sphinx: clear html_stati

Small doc fixes (#499)

* A small shift in notation

* Docs: Clarify ex2-surface mathematical description

* Refactor \boldsymbol -> \bm

* Refactor \mathbf -> \bm

* Sphinx: clear html_static_path

This is needed to avoid the 'html_static_path entry '_static' does not exist' warning

https://github.com/readthedocs/readthedocs.org/issues/1776

* Fix some incosistencies

* Invert inner products (u,v) -> (v,u)

* Add SVG figure for coordinates on the sphere

* doc: use dirhtml on readthedocs

* Improve caption of sphere coords figure

* Add reference to figure in the bps on the cubed-sphere section

Co-authored-by: Jed Brown <jed@jedbrown.org>

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make: support CEED_LDFLAGS for things like -dynamic on Cray

Solid Mechanics Example (#474)

libCEED + PETSc Solid Mechanics example

Co-authored-by: Jeremy L Thompson <jeremy.thompson@colorado.edu>
Co-authored-by: Arash Mehraban <arashm81@gmail.com>
Co-au

Solid Mechanics Example (#474)

libCEED + PETSc Solid Mechanics example

Co-authored-by: Jeremy L Thompson <jeremy.thompson@colorado.edu>
Co-authored-by: Arash Mehraban <arashm81@gmail.com>
Co-authored-by: Jed Brown <jed@jedbrown.org>
Co-authored-by: Valeria Barra <valeriabarra21@gmail.com>


* Solids - initial commit of elasticity example

Co-authored-by: Jeremy L Thompson <jeremy.thompson@colorado.edu>
Co-authored-by: Arash Mehraban <arashm81@gmail.com>

* Solids - add VLA macro

* Solids - fix test for mesh file output string

* Solids - update documentation

Co-authored-by: Jeremy L Thompson <jeremy.thompson@colorado.edu>
Co-authored-by: Arash Mehraban <arashm81@gmail.com>

* Solids - update README

* Solids - update ctx struct and casting for CUDA

* Tests - clean up test conditions for GPU backends

* GPU - fix falbacks identified

* CUDA - whitelist FDM Inverse

* make style

* doc: solids editing/correctness

* Solids - separate FE boilerplate into its own function

* Solids - clean up double includes

* doc: add more complete explanation of hyperelasticity and formulation

* Solids - Use ISGetSize for global number of face sets (had no effect on PETSc bug in MR 2615)

* edited docs for hyperFS

* Improve doc of solids example with some constitent notation and fonts

* HyperSS docs modified

* edited typo

* linearization added

* fixed a typo

* Improved doc

* doc: more writing on hyperelasticity and implementation tradeoffs

* Solids - fix typo

* Solids - compute and store C, Cinv, and S as symmetric

* Solids - use new Newton linearization, but its not converging

* Solids - update BC handling

* Solids - update README with new BC options

* removed old notation

* Solids - whitespace changes only in documentation

* doc: adjust differential notation and derive dP(dF)

* Solids - small documentation flow edits

* Solids - simplify setting BCs

* Solids - Symmetritize e in SS

* Solids - set more reasonable default number of steps for nonlinear

* Solids - fix documentation typo

* Solids - clean up computation of deltaS

* Solids - fix sample runs

* Solids - fix hyperSS jacobian

* Solids - fix hyperSS documentation

* Solids - clean up code for hyperSS

* Solids - add file and function docstrings

* doc: commutative diagram of linearization and stable stress expression

* Solids - update hyperSS documentation with linearization

* doc: further tips on stable computation

* Solids - fix typo with trace in hyperSS

* Solids - intro and hyperSS documentation updates

* Solids - update hyperFS for numerical stability with small E and nearly incompressible

* examples/solids: simpler C = I + 2E

* Solids - more compact/readable E computation

* Solids - minor style consistency change

* Solids - replace log1p with series approximation, log1p is not vectorized in libc

* Solids - refactor common components between hyperFSF and hyperFSdF

* examples/solids: use PETSc dependency flags for incremental rebuild

* examples/solids: extend range of log1p_series via shift/scale

* Solids - add bc_clamp_max option to specify maximum displacement for clamped boundary

* make style

* Solids - update with sample run informantion and spellchecking

* Doc - typo fixes

* Solids - homogonize presentation of command line options

* examples/solids: fix -Wmisleading-indentation

* examples/fluids: PETSc 3.13 compatibility

* examples/solids: use log1p for numerical stability in hyperSS

* doc: copy editing in examples/solids

* Solids - update documentation on running the code

* Solids - convert README to rst and include in documentation

* Solids - clean dependency file

* Solids - use log1p approximation in hyperSS as well

* Solids - update README to explain mms

* Solids - switch range on hyperSS log1p series approximation

* Solids - update README to clarify mandatory options

* Solids - add link to sample meshes

* Solids - simplify listing of mesh options

* Travis - use newer PETSc

* Solids - update sample run to list [.exo file] instead of name of sample mesh

* Solids - update make clean to remove src/*.d

* examples/solids: makefile cleanup

* make style

* doc examples/solids: clean up and explain nondimensionalization

* examples/solids: document algebraic solver

* examples/solids: use CG for Chebyshev eig estimation

* doc: fix references to examples/fluids

* Solids - remove mesh folder

* Solids - drop expicit ExodusII requirement, PETSc supports many types of meshes

* doc: mention PETSc --download-exodusii for Exodus

* doc: fix latexpdf

* Fix \longrightarrow rendering in PDF

* Solids - fix toctree link to README for pdflatex

* Examples and BPs Docs: Homogenize math with dS and dV and other tiny esthetics

* Solids - fix unshifted series for hyperSS log1p

* Improve doc of bpssphere: Add differential for consistency with all other examples and explain domain for clarity

* Solids - include sample mesh image

* Move mesh figure after note and slightly rename inclusion marker

Co-authored-by: Arash Mehraban <arashm81@gmail.com>
Co-authored-by: Jed Brown <jed@jedbrown.org>
Co-authored-by: valeriabarra <valeriabarra21@gmail.com>

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Slight adjustment in the BSD license text to help GH recognize it.

Copyright stuff