Merge pull request #820 from CEED/jeremy/warn-occa

Add OCCA backend warning

ci - disable OCCA Hip backend for Noether testing, unreliable results

ci - disable OCCA openmp backend for Noether testing, unreliable results

Allow CeedScalar to be single precision (#788)

One can modify `ceed.h` to include `ceed-f32.h` and then use single precision. This is tested for C in CI and has been tested by developers with Rust,

Allow CeedScalar to be single precision (#788)

One can modify `ceed.h` to include `ceed-f32.h` and then use single precision. This is tested for C in CI and has been tested by developers with Rust, Julia, and Python. This interface is evolving and should be considered experimental at this time (thus lack of automated build support).

* Introduce CeedScalarType enum

* WIP changes to allow different definitions of CeedScalar

* Introduce new header files for float and double

* Only use avx tensor contract and MAGMA non-tensor basis if CeedScalar is double

* WIP changes to allow CeedScalar to be float

* WIP start trying to adjust test tolerances for float or double

* fix typos in comments

* install ceed-f32/64 headers

* Fix missing casts for hipMAGMA element restrictions

* make CeedQFunctionContextGetContextSize available for Python bindings

* Changes to Python bindings to allow CeedScalar to be float

* WIP adjust Python tests for float or double

* make style

* remove QFunctionContextGetContextSize from backend header

* Use quotes instead of <> in include statement

* Remove unncessary includes

* Update tolerances for tests

* [Julia] allow CeedScalar to be Float32

* [Julia] Use Preferences instead of custom build configuration

# Conflicts:
# julia/LibCEED.jl/src/C.jl

* [Makefile] Change definition of CC_VENDOR so it works with cross-compilation

* [Julia] Use Preferences in CI

# Conflicts:
# .github/workflows/julia-test-with-style.yml

* [Julia] Update docs about preferences

* [Julia] Add test/Project.toml workaround for Preferences

* Add CeedGetScalarType to get the type of CeedScalar at runtime

* [Julia] Move functions from Ceed.jl to LibCEED.jl

* [Julia] Add support for getting library path and scalar type at runtime

* [Julia] Minor change to checking if CUDA is loaded

* [Julia] Check correct CeedScalar types in basis functions

* [Julia] Fix tests comparing with output file

* [Julia] Change devtests to use CeedScalar instead of Float64

* Update test 402 so context will be same size in double or float

* Update tolerances for ceed examples

* [Julia] CUDA fixes

* remove unused variable in t208

* SchurDecomposition: do not compute tau on final iteration

* Update tolerances for some basis tests (for single precision)

* Make style

* Python style fixes for basis test

* Add single precision output for t300 and t320 and adjust checks; skip t541 in single

* Add LCOV exclusions after moving to new line

* fix spacing

* Python: make CEED_EPSILON available as libceed.EPSILON

* Python: optional parameter to specify different output file for test comparison

* Python: update tests' use of EPSILON and change test_300 output file for single precision

* Python: add convenience function for getting dtype corresponding to CeedScalar

* rust - add single precision support

* [Julia] Fall back on Float64 if CeedGetScalarType is not available

* [Julia] style

* Adjust tolerance for t301

* xsmm - add single precision support

* avx - add single precision support

* Add initial single precision support for MAGMA non-tensor basis

* Skip t300 and t320 in single precision; revert Python t300 changes

* Revert output changes for t300 and t320 in junit

* [Julia] Changes to autogenerated bindings for mixed precision

* [Julia] style

* [Julia] Check scalar type when changing libceed library path

The check is also performed when the package is loaded. This prevents having to
restart the Julia session twice

* [Julia] Require JLLWrappers version 1.3

This is needed to use Preferences to change the library path

* Add documentation page for precision development

Co-authored-by: Will Pazner <will.e.p@gmail.com>

* Cleanup from merge: remove old README

* Return CEED_ALIGN to backend.h

* Make Fortran compiler (FC) optional; empty skips Fortran tests

Use in Python and Rust builds, which may not have a Fortran compiler
installed and thus would produce confusing output.

* Add single precision CI test for Noether

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

Co-authored-by: Will Pazner <will.e.p@gmail.com>
Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>
Co-authored-by: Jed Brown <jed@jedbrown.org>

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Merge pull request #803 from CEED/jed/test-junit

testing updates: junit classname, bpsraw tolerances, CUDA on lv

gitlab-ci: update lv configuration

* CUDA-11.2+ bug circumvented so use latest 11.4
* Run minimal CPU tests in parallel so parallelism applies to all compilation
*
* Run GPU tests sequentially to

gitlab-ci: update lv configuration

* CUDA-11.2+ bug circumvented so use latest 11.4
* Run minimal CPU tests in parallel so parallelism applies to all compilation
*
* Run GPU tests sequentially to avoid cudaGetDevice returning CUDA_ERROR_NOT_INITIALIZED
* This is weird because nvidia-smi -q reports very low resource utilization
* MPS and retrying within the same process failed, though other
processes can get a device

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gitlab-ci: simpler handling of success for codecov upload

gitlab-ci: pin cuda-11.1 on lv

https://github.com/CEED/libCEED/issues/802

tests: use CUDA_VISIBLE_DEVICES on lv

Merge pull request #770 from CEED/jed/cuda-ci

gitlab-ci: add lv-cuda

ci - set gitlab ci as interruptable by new pushes

ci - add coverage from lv

ci - use GCC 10 on lv

ci - only run petsc tests for CUDA, solids and fluids very resource intensive for env

ci - limit to 4 cuda threads to limit resource use

CI - update lv CI to use PETSc + CUDA build

gitlab-ci: add lv-cuda

Merge pull request #768 from CEED/jeremy/remove-dead

Remove Template Gallery and Backend Code

backends - remove template backends, simplify testing and makefile

Merge pull request #764 from CEED/jeremy/ci-exit

junit - set CEED_ERROR_HANDLER to exit

gitlab - add tmpl backends to CPU testing

Merge pull request #753 from CEED/jeremy/ci-unset-petsc

CI - unset PETSC_DIR

CI - add diagnostic output of env variables

ci - unset PETSC_DIR and PETSC_ARCH for Noether core libCEED tests

Merge pull request #745 from CEED/jeremy/test-order

gitlab - rearange the script for clearer output