Tests - add t109 to test CeedVectorSetArray

Gallery - always set size of identity qf in context, NULL doesn't always work on GPU

MAGMA - add deterministic version of MAGMA backend

Ceed - add IsDeterministic

Tests - add t318 to test all AVX backend tensor cases

Merge pull request #560 from CEED/jeremy/diag-vec

LinearAssemble Improvements

Merge branch 'jed/python-ext-suffix' [PR #562]

* jed/python-ext-suffix:
python: use precise ext suffix instead of globs in tests

python: use precise ext suffix instead of globs in tests

Otherwise we get multiple matching globs any time we've built for
multiple versions of Python.

Op - change LinearAssemble* to accept CeedVector instead of pointer to CeedVector, allows for less memory movement and interfaces with parent code better

style - rename AssembleLinear* to LinearAssemble*

Composite Operator support for AssembleLinearDiag/PBDiag (#552)

* ref - add composite operator support for building diagonal/pb diagonal

* ref - add error for non-composite mult-field operator di

Composite Operator support for AssembleLinearDiag/PBDiag (#552)

* ref - add composite operator support for building diagonal/pb diagonal

* ref - add error for non-composite mult-field operator diagonal/pb diagonal assembly

* tap - add t538 exclusion because OCCA does not support galleries

* tests - adjust test cases for ceed examples for test coverage

* Op - fix documentation

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Convert CUDA ref/reg/shared E-Layout (#554)

* tests - update tests for multiple e-layouts

* CUDA - convert ref and reg restrictions to Q-layout

* CUDA - ref/reg/shared use gen/magma E-Layout f

Convert CUDA ref/reg/shared E-Layout (#554)

* tests - update tests for multiple e-layouts

* CUDA - convert ref and reg restrictions to Q-layout

* CUDA - ref/reg/shared use gen/magma E-Layout for multi elememnt basis apply and operator apply

* CUDA/MAGMA - drop eandqdiffer and separate MAGMA operator code

* CUDA - update operator comment

* reg - clarify read/write dofs/quads

* CUDA - drop dead code

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CPU Impl of AssemblePointBlockDiagonal (#503)

* Operator - add AssemblePointBlockDiagonal for CPU backends, with test

* CUDA - add point block diagonal not supported message

* make style

*

CPU Impl of AssemblePointBlockDiagonal (#503)

* Operator - add AssemblePointBlockDiagonal for CPU backends, with test

* CUDA - add point block diagonal not supported message

* make style

* Operator - improve point block description

* OCCA - explicitly remove OCCA fallback to CPU assembly functions, will update after new OCCA backend

* Op - remove gap removal in point block diagonal

* Op - update diagonal assembly documentation

* Update backends/ref/ceed-ref-operator.c

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

* style - fix extra space in * with nopad

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

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Python - add support for getting/setting CUDA arrays

tests: use implicit none; fix datatype mismatches reported by gfortran-10

Merge branch 'master' into valeria/NSfixes

tap.sh: Update to process multiple navierstokes TESTARGS (with no output)

tap.sh: Process fluids NS example's multiple test outputs

CEED_STRIDES_BACKEND optimization for cuda-ref operator apply (#528)

* add check for backend stride status for input vectors

* add backend strides check for output vectors

* replace output cop

CEED_STRIDES_BACKEND optimization for cuda-ref operator apply (#528)

* add check for backend stride status for input vectors

* add backend strides check for output vectors

* replace output copy with elem restriction for none emode

* move input skip_restrict check to setup and never allocate E-vec if not needed

* add boolean variable for E/Q vector layout for
further optimization of output and add wrapper function in magma backend
to create a cuda-ref operator and change this state variable

* Add missing CeedChks

* style changes to better match cuda backends

* missed style change for evec check

* add CeedChk from PR #525 (merge conflict)

* make style changes

* adjust size of nqpts for non-tensor basis

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tap - acknowledge intentional MAGMA backend limit in basis kernels

ElemRestriction - add state counter for reading offsets array

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

Python: apply autopep8 and add to CI

Tests - add missing codecov markers

python: clean output checking and path dependence