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)