0.20.0 Phoenix

[diptorupd]

Added

• New dpjit decorator supporting dpnp compilation (Initial set of changes to add a new dpjit decorator to support dpnp arrays #887)
• Boxing and unboxing functionality for dpnp.ndarray to numba_dpex (Adds boxing and unboxing functionality for dpnp.ndarray to numba_dpex #902)
• New DpexTarget and dispatcher for compiling dpnp using numba-dpex (Initial set of changes to add a new dpjit decorator to support dpnp arrays #887)
• Overload implementation for dpnp.empty (Adds boxing and unboxing functionality for dpnp.ndarray to numba_dpex #902)
• Overload implementation for dpnp.empty_like, dpnp.zeros_like and
  dpnp.ones_like inside dpjit (Implementation for dpnp.empty_like(), dpnp.zeros_like() and dpnp.ones_like() #928)
• Overload implementation for dpnp.zeros and dpnp.ones inside dpjit (Implementing dpnp.zeros() and dpnp.ones() interface #923)
• Compilation and offload support for dpnp vector style expressions using Numba
  parfors (Parfor lowering as kernels and dpnp ufunc compilation to kernels #957)
• Compilation of over 70 ufuncs for dpnp inside dpjit (Parfor lowering as kernels and dpnp ufunc compilation to kernels #957)
• Backported the split parfor pass from upstream Numba. (Backported the split parfor pass from upstream Numba. #949)
• Numba type aliases to numba_dpex. (Moves USMNdArrayType into numba_dpex/core. #851)
• Numba prange alias inside numba_dpex. (Parfor lowering as kernels and dpnp ufunc compilation to kernels #957)
• New LRU cache for kernels (Refactor/kernel interfaces #804) and funcs (Adding cache and specialization to func decorator #877)
• New Range and NdRange classes for kernel submission that follow sycl's range
  and ndrange syntax. (A more consistent kernel launch parameter syntax #888)
• Monkey pacthes to Numba 0.56.4 to support dpnp ufuncs, allocating dpnp
  arrays (Init clean up and monkeypatch fix #954)
• New config flag (NUMBA_DPEX_DUMP_KERNEL_LLVM) to dump a kernel's
  LLVM IR (Output LLVM IR if NUMBA_DPEX_DEBUG environment variable is set #924)
• A badge to our gitter chatroom (Add a badge to our gitter chatroom #919)
• A small script to update copyright headers (Update copyright headers to 2023 #917)
• A new dpexrt_python extension to support USM allocators for Numba
  NRT_MemInfo (Adds boxing and unboxing functionality for dpnp.ndarray to numba_dpex #902)
• Updated examples for kernel API demonstrating compute-follows-data programming
  model. (Kernel examples refactoring #826)

Changed

• CLK_GLOBAL_MEM_FENCE and CLK_LOCAL_MEM_FENCE flags renamed to
  GLOBAL_MEM_FENCE and LOCAL_MEM_FENCE. (Removed CLK_ prefix from mem fences #844)
• Switched from Ubuntu-latest to Ubuntu-20.04 for conda package build (Switched from Ubuntu-latest to Ubuntu-20.04 for conda package build. #836)
• Rename USMNdArrayType to USMNdArray (Moves USMNdArrayType into numba_dpex/core. #851)
• Changes to the Numba type to represent dpnp ndarray typess now renamed to
  DpnpNdarray (Fix dpnp type #880)
• Improved exceptions and user errors (Refactor/kernel interfaces #804)
• Updated internal API for kernel interface with improved support for
  __sycl_usm_array_interface__ protocol (Refactor/kernel interfaces #804)
• Pin generated spirv version for kernels to 1.1 (Set the max spirv version to 1.1 #885)
• Rename DpexContext and DpexTypingContext to DpexKernelTarget and
  DpexKernelTypingContext (Initial set of changes to add a new dpjit decorator to support dpnp arrays #887)
• Renamed existing dpnp overloads that used stubs to dpnp_stubs_impl.py (Renamed dpnpimpl.py to dpnp_stubs_impl.py. #953)
• Dpctl version requirement mismatch is now a warning and not an
  ImportError (Replace ImportError with logging.warning if dpctl version is not met #925)
• Update to versioneer 0.28 (Vendor versioneer 0.28 #827)
• Update to dpctl 0.14 (Bump dpctl version requirement to 0.14 and fix issue caused by API change #858)
• Update linters: black to 23.1.0, isort to 5.12.0 (Updates the black requirement to black 23.1 #900)
• License in setup.py to match actual project licensing (Fix license in setup.py #904)

Fixed

• Kernel specialization, compute follows data programming model for
  kernels (Refactor/kernel interfaces #804)
• Dispatcher/caching rewrite to address performance regression (Dispatcher/caching rewrite to address performance regression #912, Solving perferomance regression issue by caching the kernel_bundle #896)
• func decorator qualname ambiguation fix (@func decorator qualname ambiguation fix #905)

Removed

• Removes the numpy_usm_shared module from numba_dpex. (Removes the numpy_usm_shared module from numba_dpex. #841)
• Removes the usage of llvmlite.llvmpy (Removes the usage of llvmlite.llvmpy #932)

Deprecated

• Support for NumPy arrays as kernel arguments (Refactor/kernel interfaces #804)
• Kernel argument access specifiers (Refactor/kernel interfaces #804)
• Support for dpctl.device_context to launch kernels and njit offloading (Refactor/kernel interfaces #804)
• Dpnp overloads using stubs. (Renamed dpnpimpl.py to dpnp_stubs_impl.py. #953)

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This discussion was created from the release 0.20.0 Phoenix .

[diptorupd]

One of the largest numba-dpex releases by total number of changes. It represents a revival and revitalization of the project, hence the Phoenix! The release lays the ground work more exciting features, bug fixes and general improvements in the near future.

A big round of thanks to all contributors who made it happen.