v4.8.1

Changes

Examples

• Examples: tweaked userapi free surface notebook to use MPI-safe implementation @EdCaunt (#1952)

Compiler

• compiler: Revamp compilation of halo exchanges @FabioLuporini (#2089)
• compiler: Do block with partial data reuse @FabioLuporini (#2094)
• compiler: Relax _mark_overlappable @FabioLuporini (#2069)

Architectures and JIT

• compiler: only use offloading flags for amd gpu not cpu @mloubout (#2087)
• arch: Support aws graviton @mloubout (#2080)

🐛 Bug Fixes

• compiler: Patch loop nests a-la PrecomputedInterpolation @FabioLuporini (#2102)
• compiler: Prevent topofusion of homogeneous sync Clusters @FabioLuporini (#2099)
• compiler: Patch local-SubDim heuristic for blocking @FabioLuporini (#2093)
• compiler: Fix and improve MIN/MAX codegen @FabioLuporini (#2076)
• symbolics: evaluate transpose on elements of tensors in case of deriv… @mloubout (#2072)
• compiler: Handle IndexedBase DDA across Jumps/Barriers @FabioLuporini (#2070)

Testing

• tests: Fix warnings @georgebisbas (#2079)

Continuous Integration

• ci: make aws ci parallel @mloubout (#2085)
• tests: Fix warnings @georgebisbas (#2079)
• arch: Support aws graviton @mloubout (#2080)

Installation

• pip prod(deps): update ipyparallel requirement from <8.5 to <8.6 @dependabot (#2090)
• docker: Updating AMD dockerfile to use Ubuntu 22.04. @ggorman (#2084)
• pip prod(deps): update distributed requirement from <2023.3 to <2023.4 @dependabot (#2074)

v4.8.0

Changes

misc

• Updated contact information in the Code of Conduct. @ggorman (#2038)

API

• symbolics: use devito floor instead of Undefined Function @mloubout (#2052)
• api: Add dimension-wise summing builtin and tests @mloubout (#1989)

Examples

• Examples: Add Darcy flow example @sashaowen (#1998)
• examples: Add shallow water equations notebook @AtilaSaraiva (#1867)
• examples: invoke tti example with --constant argument @ofmla (#1914)

Documentation

• docs: Update compiler summary image @georgebisbas (#2037)
• misc: Update docker/README.md @FabioLuporini (#1972)
• Update FAQ.md @FabioLuporini (#2010)
• misc: Add FAQ page (lifted from the wiki) @FabioLuporini (#1976)

Compiler

• compiler: Patch data dependencies across Jumps @FabioLuporini (#2065)
• compiler: Implement graceful lowering of derivatives (aka "unexpansion") @FabioLuporini (#2060)
• compiler: Switch from aomp to clang for amd @mloubout (#2058)
• compiler: Extensions for parlang backends @FabioLuporini (#2042)
• compiler: Introduce int32 mode @FabioLuporini (#2041)
• compiler: Support shared memory in parlang backends @FabioLuporini (#2025)
• compiler: support for HPE Cray Clang compiler @georgebisbas (#2029)
• compiler: Better blocking heuristics and revamped linearization @FabioLuporini (#2020)
• compiler: Further misc improvements @FabioLuporini (#2012)
• compiler: Misc refactorings towards serialization support @FabioLuporini (#2009)
• Misc code generation improvements @FabioLuporini (#2001)
• compiler: Misc code generation fixes @FabioLuporini (#1994)
• compiler: Misc tweaks for backend-portable code generation @FabioLuporini (#1984)

MPI

• return slice(0,-1) for glb_slices if glb_numb empty on an mpi rank @deckerla (#2004)
• mpi: Fix data distribution bugs [part 2] @rhodrin (#1949)
• compiler: Fix MPI mode diag2 does not need a MPIRegion @mmohrhard (#1992)

Architectures and JIT

• arch: Add gcc 12 into legal configurations @ziyiyin97 (#2027)

🐛 Bug Fixes

• compiler: Add cluster guard to AliasKey for safety @mloubout (#2045)
• dependencies: sympy 1.11 compatibility @mloubout (#2005)
• ci: Add Arm skip option to tests @mloubout (#2035)
• compiler: Ensure order invariance of candidates in ReducerMap.unique @ccuetom (#2033)
• compiler: Fix subdim argument mismatch @mloubout (#2019)
• symbolics: Fix absolute value warning for integer input @mloubout (#2018)
• types: Minor fixes to sparse function indices and implicit dims @mloubout (#2011)
• compiler: Patch placement of ConditionalDimension with multi-Dimension conditions @FabioLuporini (#2008)
• compiler: Prevent reordering of existing temps in CSE @mloubout (#2002)
• return slice(0,-1) for glb_slices if glb_numb empty on an mpi rank @deckerla (#2004)
• mpi: Fix data distribution bugs [part 2] @rhodrin (#1949)
• dsl: Patched cross-derivative fd_order bug @EdCaunt (#1988)
• compiler: Check jit_dir existence when saving @GlassOfWhiskey (#1983)

Testing

• ci: Remove docker pruning from pytest-gpu @FabioLuporini (#2013)

Continuous Integration

• docker: add AMD HIP build to base docker @mloubout (#2055)
• CI: switch macos runner to latest gcc version @mloubout (#2046)
• ci: improve accuracy of codecov. @ggorman (#2040)
• ci: Streamlining @ggorman (#2028)
• ci: Remove dangling docker layers @FabioLuporini (#2017)

Installation

• pip prod(deps): update distributed requirement from <2023.2 to <2023.3 @dependabot (#2063)
• compiler: Switch from aomp to clang for amd @mloubout (#2058)
• docker: Switch to rocm 4.5.2 @mloubout (#2057)
• docker: add AMD HIP build to base docker @mloubout (#2055)
• pip prod(deps): update distributed requirement from <2022.13 to <2023.2 @dependabot (#2048)
• dependencies: sympy 1.11 compatibility @mloubout (#2005)
• pip prod(deps): update distributed requirement from <2022.12 to <2022.13 @dependabot (#2039)
• pip prod(deps): update distributed requirement from <2022.11 to <2022.12 @dependabot (#2031)
• pip prod(deps): update py-cpuinfo requirement from <=8 to <10 @dependabot (#2026)
• misc: Add packages to Docker base images @FabioLuporini (#2030)
• pip prod(deps): update distributed requirement from <2022.10 to <2022.11 @dependabot (#2021)
• pip prod(deps): update distributed requirement from <2022.9 to <2022.10 @dependabot (#1996)
• pip prod(deps): update distributed requirement from <2022.8 to <2022.9 @dependabot (#1987)

v4.7.1

Changes

Continuous Integration

• docker: fix deployment condition @mloubout (#1985)

v4.7.0

Changes

• compiler: Fix checkpoint size when save != None @speglich (#1906)
• compiler: Revamp generation of implicit equations @FabioLuporini (#1908)

API

• compiler: Support interpolation with user-provided implicit dims @FabioLuporini (#1948)
• api: Add op.cinterface for C-level interoperability @FabioLuporini (#1843)

Examples

• examples: Fix grammar and spelling mistakes in pml example @PershingSquare (#1930)
• examples: Update MPI tutorial notebook and scripts @georgebisbas (#1923)
• examples: Use solve instead of by hand derivation @mloubout (#1879)
• examples: Rename the viscoacoustic equations @nogueirapeterson (#1869)
• examples: Update attribute names and backend for synthetics notebook @EdCaunt (#1895)
• examples: Add colab/wsl dependencies to gempy notebook @EdCaunt (#1866)
• Fix 2D Gzz when sintheta==0 @mloubout (#1855)

Documentation

• misc: Documentation tweaks @FabioLuporini (#1853)
• misc: Add citation button @georgebisbas (#1848)

Compiler

• compiler: Generalize lowering of reductions @FabioLuporini (#1980)
• compiler: Restructure basic.Object sub-hierarchy @FabioLuporini (#1977)
• compiler: Infer type generation from _C_ctype @FabioLuporini (#1971)
• compiler: Reuse twin elemental functions @FabioLuporini (#1967)
• compiler: Support for MPI+CUDA @FabioLuporini (#1965)
• compiler: Remove IndexedData.free_symbols hack @FabioLuporini (#1958)
• compiler: Decouple pthreading pass from orchestration @FabioLuporini (#1938)
• compiler: Inception of two-stage derivative evaluation @FabioLuporini (#1893)
• compiler: Misc compiler improvements @FabioLuporini (#1912)
• compiler: Uncache data carriers @FabioLuporini (#1913)
• compiler: Misc minor code generation fixes @FabioLuporini (#1891)
• compiler: Minor FD refactorings @FabioLuporini (#1875)
• compiler: Minor blocking.py refactorings @georgebisbas (#1845)
• compiler: Avoid generating unnecessary conditionals @FabioLuporini (#1880)
• compiler: Move derivative.evaluate @FabioLuporini (#1872)
• compiler: Drop unnecessary check_indices @FabioLuporini (#1871)
• compiler: Add GuardOverflow @FabioLuporini (#1870)
• compiler: Flip par-tile unrolling @FabioLuporini (#1868)
• compiler: Relax Data.array_finalize to work with subclasses @FabioLuporini (#1865)
• compiler: Add SEPARABLE property @FabioLuporini (#1840)

MPI

• mpi: Fix data distribution bugs [part 1] @rhodrin (#1947)
• mpi: Always generate MPIComm with MPI enabled @FabioLuporini (#1905)
• mpi: Do not send padding region when doing pythonland halo exchange @tjb900 (#1874)

GPU

• install: Create scheduled base docker images for better build @mloubout (#1946)
• [gpu] Update to HPC SDK 22.2 and CUDA 11.6 @kenhester (#1842)

Architectures and JIT

• arch: Support OpenMP on Apple M1 @mloubout (#1931)
• compiler: Drop ARM specialization @FabioLuporini (#1882)
• arch: Fix CustomCompiler instantiation @AtilaSaraiva (#1850)
• arch: Add lineinfo compiler flag @FabioLuporini (#1849)

🐛 Bug Fixes

• compiler: Patch premature lowering of EvalDerivative @FabioLuporini (#1979)
• mpi: Fix data distribution bugs [part 1] @rhodrin (#1947)
• api: Fix Derivative substitution @mloubout (#1942)
• compiler: Patch fission (issue 1921) @FabioLuporini (#1922)
• compiler: Patch buffer initialization @FabioLuporini (#1916)
• compiler: Patch generate_implicit for corner cases @FabioLuporini (#1910)
• compiler: Patch race conditions due to storage-related dependencies @FabioLuporini (#1903)
• compiler: Patch iteration space scheduling @FabioLuporini (#1898)
• compiler: Fix guards fusion @FabioLuporini (#1883)
• compiler: Do not evaluate unevaluable expressions @mloubout (#1878)
• compiler: Patch norm accumulation @FabioLuporini (#1864)
• compiler: Patch norm enforcing double precision accumulation @FabioLuporini (#1861)
• compiler: Use long, not unsigned int, for linearization @FabioLuporini (#1841)

Benchmarking

• compiler: Add blockrelax tests and refresh advisor profiling @georgebisbas (#1929)

Testing

• tests: Refactor conftest skipif names @georgebisbas (#1960)
• install: Create scheduled base docker images for better build @mloubout (#1946)
• tests: Add MFE for issue 1753 @georgebisbas (#1873)
• CI: prevent conflict with pytest @mloubout (#1844)

Continuous Integration

• install: Update to intel-oneapi-mpi-devel @georgebisbas (#1961)
• install: Create scheduled base docker images for better build @mloubout (#1946)
• ci: Hotfix for actions-gh-pages @georgebisbas (#1937)
• ci: Hotfix actions-gh-pages @georgebisbas (#1936)
• ci: Update several GitHub actions versions @georgebisbas (#1934)

Installation

• install: Patch Dockerfile.nvidia @FabioLuporini (#1975)
• docker: Fix docker tags for publish @mloubout (#1982)
• install: Add more base images to Docker.nvidia @FabioLuporini (#1974)
• install: Reinstate libgl1-mesa-glx @georgebisbas (#1966)
• install: Add lib/intel64_lin @georgebisbas (#1963)
• install: Refactor Intel paths @georgebisbas (#1962)
• pip prod(deps): update ipyparallel requirement from <8.4 to <8.5 @dependabot (#1945)
• pip prod(deps): update distributed requirement from <2022.7 to <2022.8 @dependabot (#1955)
• install: Create scheduled base docker images for better build @mloubout (#1946)
• docker: Hotfix Dockerfile.nvidia @georgebisbas (#1940)
• gpu: Update to HPC 22.3, reduced image size @kenhester (#1918)
• pip prod(deps): update distributed requirement from <2022.6 to <2022.7 @dependabot (#1935)
• deps: Drop deprecated distutils imports @georgebisbas (#1899)
• pip prod(deps): update distributed requirement from <2022.5 to <2022.6 @dependabot (#1917)
• pip prod(deps): update distributed requirement from <2022.4 to <2022.5 @dependabot (#1894)
• CI-Docker: Publish CPU image with tag latest @navjotk (#1890)
• pip prod(deps): update distributed requirement from <2022.3 to <2022.4 @dependabot (#1884)
• sympy: new version compat @mloubout (#1858)
• install: Fix cflag for nvidia mpi4py @mloubout (#1854)
• install: Fix EOL typo @mloubout (#1852)
• Installation: update setup.py and cleanup docker files @mloubout (#1847)
• pip prod(deps): update distributed requirement from <=2022.2 to <2022.3 @dependabot (#1851)

v4.6.2

Changes

Documentation

• misc: update pypi @georgebisbas (#1837)

Compiler

• compiler: Augment code generation capabilities for CUDA/HIP/SYCL support @FabioLuporini (#1828)

GPU

• gpu: Adding DPCPP compiler support @reguly (#1836)

🐛 Bug Fixes

• compiler: Patch linearization pass @FabioLuporini (#1839)

v4.6.1

Changes

API

• ckp: Checkpointing update @navjotk (#1774)
• sympy: Extend SymPy support to 1.9 @mloubout (#1786)

Examples

• benchmarks: custom click type for grid params @mloubout (#1832)
• examples: Add nonzero example to ConditionalDimension tutorial @georgebisbas (#1820)
• examples: add adjoint, born, gradient, checkpointing to the tti example @mloubout (#1809)
• examples: Improve tti_pure_wave_eq tutorial @ofmla (#1779)
• examples: Add tti_pure_wave_eq tutorial @ofmla (#1752)

Compiler

• compiler: CUDA/HIP/SYCL preliminaries + misc improvements @FabioLuporini (#1819)
• compiler: Refactorings, simplifications, generalizations @FabioLuporini (#1810)
• compiler: gpu cc detection fix @georgebisbas (#1814)
• compiler: Evaluate MIN/MAX expressions with assumptions @georgebisbas (#1798)
• compiler: Move lambda level to IncrDimension property @georgebisbas (#1793)
• compiler: Further minor tweaks @FabioLuporini (#1796)
• compiler: Nested indexification @mloubout (#1789)
• compiler: Minor patches @FabioLuporini (#1784)
• compiler: Make Injection/Interpolation part of sympy hierarchy @FabioLuporini (#1782)
• compiler: Refactor subdomain hierarchy @FabioLuporini (#1781)
• compiler: Enable specialization of Function.data @FabioLuporini (#1778)
• compiler: Add evalmin, evalmax utilities @georgebisbas (#1777)
• compiler: Simplifications @FabioLuporini (#1773)

MPI

• mpi: Fix mask ordering for sparse gather @mloubout (#1824)
• mpi: Add MPI support for python3.9 @georgebisbas (#1790)

GPU

• gpu: move blocking pass from custom to advanced mode @italoaug (#1818)
• gpu: gpu cc detection fix @georgebisbas (#1814)
• gpu: add nvidia gpu compute capability auto-detection @georgebisbas (#1803)
• gpu: Loop tiling for GPU @italoaug (#1801)
• gpu, compiler: Update HPC SDK 21.9 @kenhester (#1765)

Architectures and JIT

• arch: Support OSX+M1 @FabioLuporini (#1822)
• compiler: add nvidia gpu compute capability auto-detection @georgebisbas (#1803)

🐛 Bug Fixes

• examples: Change stability testing sizes to avoid domain overlap with MPI @mloubout (#1772)
• compiler: Fixes #1695 by prioritising innermost vectorizable candidates @georgebisbas (#1697)

Continuous Integration

• ci: Update codecov action version @mloubout (#1825)
• ci: Fix OSX setup in tutorials @mloubout (#1807)
• ci: Use conda with python 3.8 (defaults to 3.10 otherwise) @FabioLuporini (#1775)

Installation

• misc: Add requirements.txt and requirements-optional.txt to MANIFEST.in @hmeiland (#1835)
• reqs: version check for distributed @georgebisbas (#1830)
• pip prod(deps): update distributed requirement from <2021.13 to <2022.2 @dependabot (#1821)
• pip prod(deps): update distributed requirement from <2021.12 to <2021.13 @dependabot (#1805)
• ci: Add python 3.10, gcc-10 option @georgebisbas (#1795)
• pip prod(deps): update distributed requirement from <2021.11 to <2021.12 @dependabot (#1794)
• reqs: Extend SymPy support to 1.9 @mloubout (#1786)
• pip prod(deps): update distributed requirement from <2021.10 to <2021.11 @dependabot (#1785)
• install: Align docker for cpu and nvidia @hmeiland (#1758)

v4.6

Changes

API

• sympy: proper version check @mloubout (#1769)

Examples

• examples: enforce stable space order for self adjoint op @mloubout (#1747)
• tests: add tti_setup to gradientJ test @ofmla (#1740)

Compiler

• compiler: Add machinery for custom memory allocators and MPI @FabioLuporini (#1764)
• compiler: lift skewing in higher block levels @georgebisbas (#1735)
• compiler: Loop fission @FabioLuporini (#1732)
• compiler: improve HB generated code @georgebisbas (#1731)
• compiler: Introduce linearization pass @FabioLuporini (#1727)
• compiler: Introducing min/max bounds to replace 'bf' elemental functions @georgebisbas (#1673)

MPI

• mpi: Speedup index_glb_to_loc @FabioLuporini (#1748)
• mpi: Mitigate SparseFunction setup costs @mloubout (#1720)

GPU

• compiler: Add optimization option to fuse WithLocks tasks @FabioLuporini (#1736)

🐛 Bug Fixes

• mpi: Patch neighborhood construction @FabioLuporini (#1768)
• compiler: Patch SubDomainSet with NVC @FabioLuporini (#1767)
• compiler: Patch and improve SubDomainSet @FabioLuporini (#1762)
• compiler: Fix zero to zero slices @rhodrin (#1757)
• bench: Patch jacobian operators + MPI (see issue #1744) @FabioLuporini (#1745)

Benchmarking

• bench: Patch jacobian operators + MPI (see issue #1744) @FabioLuporini (#1745)
• bench: Add warmup option to run mode @FabioLuporini (#1742)

Continuous Integration

• ci: Update Ubuntu versions @rhodrin (#1759)

Installation

• install: Udpate to HPCSDK 21.7, Update to Jupyter>=3.0 @FabioLuporini (#1760)
• pip prod(deps): update distributed requirement from <2021.9 to <2021.10 @dependabot (#1749)
• pip prod(deps): update distributed requirement from <2021.8 to <2021.9 @dependabot (#1737)
• reqs: enforce pip>=21.1.2 for conda env installation @georgebisbas (#1734)
• reqs: pip new file arg format @georgebisbas (#1733)

Misc

• misc: git ignore *.npy files @georgebisbas (#1729)

v4.5

Changes

API

• dsl: Generalised MatrixSparseTimeFunction @tjb900 (#1719)
• dsl: Improve support for running operators concurrently in python threads @tjb900 (#1708)

Examples

• examples: Add viscoacoustic Born operator to 1st sls equation @nogueirapeterson (#1690)
• examples: Switch to adjoint time derivative @mloubout (#1706)
• examples: re-run skew adjoint notebook @jkwashbourne (#1710)
• examples: Fix source illumination @rabreucristo (#1707)
• examples: Fix broken gempy import in tutorial notebook @EdCaunt (#1704)
• examples: Add notebook for creating seismic synthetics with gempy @EdCaunt (#1643)
• examples: Tweak LSRTM_acoustic notebook @rabreucristo (#1698)
• examples: Add LSRTM acoustic notebook @rabreucristo (#1574)

Compiler

• compiler: Revamp CIRE exploiting EvalDerivative @FabioLuporini (#1688)
• compiler: Improve derivative factorization pass @FabioLuporini (#1657)

MPI

• mpi: Towards compatibility for mode!=basic and GPU @FabioLuporini (#1721)
• mpi: Patch MPI cleanup @FabioLuporini (#1712)

GPU

• gpu: Enable tile clause in place of collapse with OpenACC @FabioLuporini (#1703)
• gpu: HPC SDK 21.5, Singularity, HPCX MPI update @kenhester (#1709)
• gpu: Set device on pthreads @FabioLuporini (#1716)
• compiler: Revamp data streaming @FabioLuporini (#1702)
• gpu: Fix offloading when zero-size arrays @FabioLuporini (#1684)
• gpu: Patch selection of streamed TimeFunctions @FabioLuporini (#1683)
• gpu: Enable tile clause in place of collapse with OpenACC @FabioLuporini (#1703)

🐛 Bug Fixes

• compiler: Revamp data streaming @FabioLuporini (#1702)
• API: fixed callback of PrecomputedInterpolator injection @ccuetom (#1691)

Benchmarking

• bench: Patch jacobian_adjoint @FabioLuporini (#1718)
• bench: prevent zero input for jacobian @mloubout (#1713)
• bench: Fix gflopss dumping @FabioLuporini (#1705)
• bench: Allow asv workflow to discover new benchmarks @rhodrin (#1689)
• bench: Fix asv new benchmark issue @rhodrin (#1686)

Testing

• tests: Patch expected output for ipython==7.23.0 @FabioLuporini (#1687)
• tests: Add optimizations to linalg examples @georgebisbas (#1529)

Continuous Integration

• ci: Stop including tutorial notebooks in codecov @EdCaunt (#1694)
• Allow asv workflow to discover new benchmarks @rhodrin (#1689)
• bench: Fix asv new benchmark issue @rhodrin (#1686)
• Update release-drafter.yml @FabioLuporini (#1685)

Misc

• misc: Fix clear-cache script @FabioLuporini (#1679)

Installation

• pip prod(deps): update distributed requirement from <2021.7 to <2021.8 @dependabot (#1722)
• pip prod(deps): update distributed requirement from <2021.6 to <2021.7 @dependabot (#1701)
• pip prod(deps): update distributed requirement from <2021.5 to <2021.6 @dependabot (#1693)

v4.4

Changes

🐛 Bug Fixes

• compiler: Patch TempFunction pickling @FabioLuporini (#1677)
• bench: Patch ASV's generation of new plots @FabioLuporini (#1672)
• gpu: Fix leaks due to excessive fetching/prefetching @FabioLuporini (#1658)
• types: Drop unsafe/unnecessary memoization in the arguments processing engine @FabioLuporini (#1647)
• compiler: Fix processing of grid spacing @FabioLuporini (#1628)
• misc: Avoid crashing on missing _memfree_args @FabioLuporini (#1612)
• compiler: Fix ScheduleTree construction in presence of guards and/or syncs @FabioLuporini (#1611)
• misc: Patch ThreadID pickling @FabioLuporini (#1606)
• compiler: Patch issue #1592 (HaloScheme with time subdimensions) @Leitevmd (#1597)
• dsl: Patch symbolic coefficients with staggered grids @EdCaunt (#1595)
• Fix find_library issue to MacOS Big Sur @speglich (#1584)
• Fix hierarchical blocking + parallelism @FabioLuporini (#1580)
• BoundSymbol constructor to be cached @mloubout (#1576)

Compiler

• compiler: Tweak nested-par candidate condition @georgebisbas (#1669)
• compiler: Singletonize special symbols (e.g. nthreads) @FabioLuporini (#1650)
• misc: Drop unused backend infrastructure @FabioLuporini (#1632)
• compiler: Improve aliases detection, processing, and optimization @FabioLuporini (#1631)
• mpi: Add diag2 mode @FabioLuporini (#1630)
• compiler: Add skewing pass towards Temporal Blocking @georgebisbas (#1620)
• misc: Use pickled soname rather than generating a new one @FabioLuporini (#1605)
• compiler: Add option to use Functions, in place of Arrays, for compiler-generated temporary @FabioLuporini (#1591)
• compiler: Improve the cost model used by CIRE @FabioLuporini (#1585)
• Refactor Array sharing @FabioLuporini (#1583)
• Refactor Operator hierarchy @FabioLuporini (#1573)
• Introduce devito/arch @FabioLuporini (#1563)
• operator: Use FD-Gpts/s instead of Gpts/s @georgebisbas (#1544)

API

• sympy: Support v1.8 @mloubout (#1549)
• compiler: Check consistency between shape and grid for TimeFunction, too @tjb900 (#1667)
• dsl: Add MatrixSparseTimeFunction to support multi-point sources @FabioLuporini (#1603)
• dsl: Enable overriding over SubDimension thickness @FabioLuporini (#1608)
• Shift argument as a tuple @Leitevmd (#1561)
• BoundSymbol constructor to be cached @mloubout (#1576)
• gpu: Add devicerm API for conditional deletions @FabioLuporini (#1571)
• Introduce deviceid API to offload Operators on specific GPUs @FabioLuporini (#1569)

Examples

• advisor: merge roofline and json @georgebisbas (#1649)
• examples: TTI 1st order operators @ofmla (#1602)
• examples: Add viscoacoustic Born operator to 2nd sls equation @nogueirapeterson (#1617)
• examples: Born approximation for TTI media @ofmla (#1555)
• examples: add first order adjoint viscoacoustic equations @nogueirapeterson (#1567)
• Tutorials: add shift parameter to Ren visco-acoustic equation @nogueirapeterson (#1562)

Documentation

• Bump static release number @FabioLuporini (#1564)

MPI

• compiler: Check consistency between shape and grid for TimeFunction, too @tjb900 (#1667)
• mpi: Add diag2 mode @FabioLuporini (#1630)
• mpi: Add ability to specify MPI topology used for grid division @FabioLuporini (#1604)
• mpi: Prevent double finalization with devito used as a lib @FabioLuporini (#1609)
• mpi: Pass MPI_COMM_SELF to Distributor upon unpickling @FabioLuporini (#1607)

GPU

• gpu: Fixup prefetch jitting when using extra symbols @FabioLuporini (#1678)
• gpu: Update Dockerfile.nvidia to HPC SDK 21.3 @kenhester (#1659)
• gpu: Fix leaks due to excessive fetching/prefetching @FabioLuporini (#1658)
• gpu: Add gpu-fit value for all functions (fix #1642) @Leitevmd (#1645)
• compiler: Work around clang[10,11,?] omp-offloading bug @FabioLuporini (#1634)
• arch: Review get_gpu_info @Leitevmd (#1626)
• misc: Updating to NVIDIA HPC SDK 21.2 @kenhester (#1594)
• compiler: Target gpu for PGI openacc @Leitevmd (#1587)
• arch: Add nvidia-smi parser to GPU checking @Leitevmd (#1615)
• gpu: Updated Dockerfile.nvidia to HPC SDK 21.1 @kenhester (#1593)
• gpu: Add devicerm API for conditional deletions @FabioLuporini (#1571)
• Data streaming support with OpenMP offloading @FabioLuporini (#1556)

Testing

• ci: Modify mpi-example workflow and update docker actions @rhodrin (#1664)
• ci: Switch to default gcc(9.3) for conda build @mloubout (#1651)
• ci: Fix conda build @mloubout (#1648)
• ci: Update Ci-gpu for nvidia openmp @Leitevmd (#1635)
• ci: Work around archives missing error on apt install @FabioLuporini (#1623)
• ci: Transfer gpu workflow to self-hosted runners @rhodrin (#1618)
• ci: Separate adjoint based tests @rhodrin (#1572)

v4.3

🐛 Bug Fixes

• Patch aliases' min-storage option @FabioLuporini (#1535)
• Fix loop collapsing @FabioLuporini (#1534)
• operator: Patch grid-carried argument overrides @FabioLuporini (#1523)
• Fix profiling IET for Intel Advisor benchmarking @georgebisbas (#1516)
• Fix ARM issues @georgebisbas (#1515)
• make test tools less random @ggorman (#1507)
• ir: Fixup _lower_stepping_dims @Leitevmd (#1504)
• Fix custom coefficients on staggered grids @EdCaunt (#1497)
• Tensor grid fixup @mloubout (#1489)
• Patch issue #1477 @FabioLuporini (#1488)
• Patch compilation time @FabioLuporini (#1487)
• Conditonals: Added diff2sympy to conditionals @EdCaunt (#1475)
• Minor tweaks @FabioLuporini (#1469)
• Fix SubDomainSet bug @rhodrin (#1457)
• Function globabl size method @rhodrin (#1499)
• Fix parallel increments @FabioLuporini (#1446)
• fix misspelling of openmp-targets for amdgcn-amd-amdhsa @paklui (#1429)
• examples: Fix opt arg-passing for elastic and TTI @georgebisbas (#1425)

API

• FD: add missing shift option @Leitevmd (#1551)
• Refactor and enhance section profiling @FabioLuporini (#1547)
• GPU data streaming @FabioLuporini (#1520)
• builtins: initialize FD halo @mloubout (#1511)
• Fix custom coefficients on staggered grids @EdCaunt (#1497)
• Tensor grid fixup @mloubout (#1489)
• Added origin_map attribute to Grid @EdCaunt (#1461)
• Tensor API: improve behavior and interleaving with sympy. @mloubout (#1390)

Examples

• Example: add second-order viscoacoustic equations @nogueirapeterson (#1406)
• Updated cavity flow notebook for cfd examples @kmn319 (#1502)
• Notebooks with Damping, PML and HABC absorbing boudary conditions. @felipeaugustogudes (#1323)
• Examples: Add tests and damp safety checks for backward compatibility @mloubout (#1434)
• Move time block notebook to seismic/tutorials @jkwashbourne (#1441)
• examples: Fix opt arg-passing for elastic and TTI @georgebisbas (#1425)
• Time Blocking Notebook POC w/serialization and compression @jkwashbourne (#1424)
• examples: Patch plot_velocity @FabioLuporini (#1428)
• Self-adjoint seismic: Update correctness linearization plot @jkwashbourne (#1423)

Documentation

• Correct typo in examples/cfd/03_diffusion.ipynb @jakubbober (#1451)
• Replaced mini-web-app for slack invites to slacks native solution. @ggorman (#1439)

MPI

• builtins: initialize FD halo @mloubout (#1511)
• Fix halo update hoisting @Leitevmd (#1494)
• Fixup _hoist_halospots @FabioLuporini (#1496)
• Fixup _drop_halospots @FabioLuporini (#1495)
• Outhalo size warning @rhodrin (#1493)
• Fixing halo spot merge rule (issue 1459) @Leitevmd (#1482)
• MPI + OpenMP 5.0 @italoaug (#1363)
• mpi data gatherer @rhodrin (#1376)

GPU

• Skip viscoacoustic tests with openacc @rhodrin (#1559)
• GPU data streaming @FabioLuporini (#1520)
• Use omp_set_default_device for OpenMP GPU offloading @italoaug (#1517)
• Tidy gpu CI workflow @rhodrin (#1470)
• Fix MPI in Dockerfile.nvidia @kenhester (#1492)

Testing

• Skip viscoacoustic tests with openacc @rhodrin (#1559)
• Tweak ASV and GPU workflows @rhodrin (#1558)
• docker publish tweaks @rhodrin (#1548)
• Docker workflow updates @rhodrin (#1546)
• CI: Update gpu workflow @rhodrin (#1542)
• Migrate asv workflow to new runner @rhodrin (#1530)
• Move mpi examples to new runner @rhodrin (#1543)
• Migrate MPI CI @rhodrin (#1531)
• Add test that compares gradient equivalence @navjotk (#1519)
• ci: Disable dask tutos on OSX build @FabioLuporini (#1505)
• CI: skip dask on osc builds @mloubout (#1458)

Misc

• Update distributed requirement to <2021.2 @dependabot (#1557)
• Improve bitwise reproducibility @ggorman (#1438)
• Update to NVidia HPC 20.9; MPI Fixes @kenhester (#1526)
• perf: Add global gflopss to operator log @georgebisbas (#1462)
• Advisor miscellaneous improvements @georgebisbas (#1503)
• Updated dependencies in Dockerfile.nvidia: HPC SDK 20.9, cupy110 @kenhester (#1484)
• Improve detection and scheduling of CIREs @FabioLuporini (#1465)
• Intel Advisor jupyter notebook benchmarks/user/advisor scripts update @jack-lascala (#1456)
• Added sniffing Intel MPI as MPI version in compiler.py @jack-lascala (#1455)
• Moving and packaging the Intel Advisor 2020 scripts into benchmarks/user/advisor @jack-lascala (#1452)
• Moved from PGI to HPC SDK. New NVIDIA Based-Container. @kenhester (#1450)
• Intel Advisor 2020 automatic roofline tools @jack-lascala (#1440)
• Potentially smarter CIRE via cire-rotate option @FabioLuporini (#1430)
• Update pytest requirement from to >=3.6,<7.0 @dependabot (#1414)