cuda - add ElemRestrictionAtPoints

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all sin

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all singly included headers

* jit - drop most guards on backend JiT files

* sycl - drop extra header guards

* jit - enable #pragma once for QF source

* fluids - use #pragma once for util/helper qf source

* test - check different multiple includes

* fluids - fix odd include

* jit - update interface for building JiT string from multiple files

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Merge pull request #1537 from CEED/jeremy/pragma-once

Use #pragma once for non-JiT headers

minor - update copyright headers

Merge pull request #1521 from CEED/jeremy/cov-fixes

Reduce Code Duplication

backend - use const for backend rstr data, should never change after set

backend - use new user data copy utility

backend - same memory owned/borrowed strategy for all impls

Merge pull request #1488 from CEED/jeremy/const-path

Const for CeedQFunctionGetSourcePath

internal - more updates for const

Merge pull request #1463 from CEED/jeremy/memcheck-strides

CEED_STRIDES_BACKEND related updates

rstr - fix signature of GetLayout

rstr - add CeedElemRestriction[Get,Set]LLayout

Merge pull request #1450 from CEED/sjg/jit-speedup-dev

Refactor GPU-backend element restriction source to only compile the required kernels, and do so lazily at first apply

Merge pull request #1302 from CEED/sjg/gpu-restriction-dev

GPU element restriction for `CEED_RESTRICTION_ORIENTED` and `CEED_RESTRICTION_CURL_ORIENTED`

Add deterministic element restriction transpose GPU kernels for oriented and curl-oriented restrictions

Fix for PEDANTIC

Initial commit for cuda-ref and hip-ref backend support for oriented and curl-oriented element restrictions

For now, the element restriction transpose for oriented or curl-oriented cases is always n

Initial commit for cuda-ref and hip-ref backend support for oriented and curl-oriented element restrictions

For now, the element restriction transpose for oriented or curl-oriented cases is always non-deterministic.

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Merge pull request #1315 from CEED/jeremy/queep

Backend Consistency Fixes

style - fixes for CUDA backends

Merge pull request #1292 from CEED/sjg/gpu-rstr-unify

Unify `magma` backend restriction with `cuda-ref` and `hip-ref`

Unify magma backend restriction with cuda/hip-ref, keeping runtime option for deterministic and non-deterministic using magma/det

This also opens the opportunity to make cuda/hip-ref non-determinist

Unify magma backend restriction with cuda/hip-ref, keeping runtime option for deterministic and non-deterministic using magma/det

This also opens the opportunity to make cuda/hip-ref non-deterministic by default and add cuda/hip-ref/det variants.

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Merge pull request #1265 from CEED/sjg/hcurl-restr-dev

CeedElemRestriction for H(curl)

Add missing checks for support of different element restriction types in backends