fluids: Add -pmat_pbdiagonal warning

fluids: Remove old CreateMatShell_Ceed

This is fully replaced by MatCeed

fluids: Add KSPSetFromOptions_WithMatCeed

fluids: Use MatCeed for Jacobian

test(fluids): Add stabilized explicit test for advection

Also uses consistent mass matrix

fix(fluids): RHS stabilization term should be negative

fluids: Add MatCeed Code from Ratel

fluids: Make MatShell functions static

This is done primarily to allow MatCeed to coexist with the context
operators for right now.

This has the nasty side-effect of forcing `Mat` objects to be NUL

fluids: Make MatShell functions static

This is done primarily to allow MatCeed to coexist with the context
operators for right now.

This has the nasty side-effect of forcing `Mat` objects to be NULL when
they're passed into CreateMatShell_Ceed, but that will soon be replaced
with MatCeed, so it is only temporary for the transition in this PR

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fixup! fluids: Change test for advection tau types

doc(fluids): New choices for tau in advection

fluids: Change test for advection tau types

fluids: Add different tau choices for advection

test(fluids): Test bc_slip

fluids: Implement bc_slip

This is a weak version of slip boundary condition based on a Riemann
solve

fluids: Change -bc_slip_x -> -bc_symmetry_x

Merge pull request #1361 from CEED/jrwrigh/external_sgs

fluids: Add external SGS DD inference capability

test: Add SGS data-driven sequential test

docs(fluids): Fused/sequential data-driven SGS model

fluids: Implement sequential SGS DD eval

Fixing SmartRedis meta data arrays to be of type Int64 (#1501)

* fluids: fixed SmartRedis meta data arrays to be of type Int64

* fluids: style fix

---------

Co-authored-by: Riccardo Balin <

Fixing SmartRedis meta data arrays to be of type Int64 (#1501)

* fluids: fixed SmartRedis meta data arrays to be of type Int64

* fluids: style fix

---------

Co-authored-by: Riccardo Balin <balin@aurora-uan-0010.hostmgmt.cm.aurora.alcf.anl.gov>

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Merge pull request #1496 from CEED/jrwrigh/ksp_mass

Fluids: Fix mass operator for explicit timestepping, move to KSP for mass operator

fixup! fluids: Use KSP for explicit mass matrix

fluids: Fix mass matrix for explicit time stepping

The local vector should be initialized to zero so that all the essential
nodes (ie. strong boundary condition nodes) are not factored in for the
ma

fluids: Fix mass matrix for explicit time stepping

The local vector should be initialized to zero so that all the essential
nodes (ie. strong boundary condition nodes) are not factored in for the
matrix multiply. The PR associated with this commit should have a
document attached detailing why this is the case.

Previous tests used this incorrect mass matrix and so now fail. The
results for these tests are corrected as well.

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fluids: Destroy stray Mats

fluids: Use KSP for explicit mass matrix