Python-for-HPC · ggeorgakoudis · Feb 6, 2026 · Feb 3, 2026 · Feb 3, 2026 · Feb 3, 2026
diff --git a/.github/workflows/build-upload-wheels.yml b/.github/workflows/build-upload-wheels.yml
@@ -35,13 +35,13 @@ jobs:
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==3.1.4
+        run: python -m pip install cibuildwheel==3.3.1
 
       - name: Build wheels {{ matrix.os }}
         # Set LLVM_VERSION for the host to forward to the cibuildwheel
         # environment.
         env:
-          LLVM_VERSION: "15.0.7"
+          LLVM_VERSION: "20.1.8"
         run: python -m cibuildwheel --output-dir wheelhouse
 
       - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
@@ -58,7 +58,7 @@ jobs:
 
       - name: Build sdist
         env:
-          LLVM_VERSION: "15.0.7"
+          LLVM_VERSION: "20.1.8"
         run: pipx run build --sdist
 
       - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
@@ -73,8 +73,14 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, ubuntu-24.04-arm]
-        python-version: ['3.10', '3.11', '3.12', '3.13']
-        numba-version: ['0.61.0', '0.61.2']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
+        numba-version: ['0.62.0', '0.62.1', '0.63.0', '0.63.1']
+        exclude:
+          - python-version: '3.14'
+            numba-version: '0.62.0'
+          - python-version: '3.14'
+            numba-version: '0.62.1'
+
     steps:
       - name: Download built wheels
         uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0

diff --git a/.gitlab/jobs/tioga.yml b/.gitlab/jobs/tioga.yml
@@ -56,6 +56,7 @@ variables:
         - "3.11"
         - "3.12"
         - "3.13"
+        - "3.14"
 
 build-and-test-tioga:
   extends: [.base-job, .python-variants]
diff --git a/MANIFEST.in b/MANIFEST.in
@@ -1 +1 @@
-recursive-include src/numba/openmp/libs *
+recursive-include src/numba/openmp/libs *.py *.so *.a *.bc
diff --git a/README.md b/README.md
@@ -45,6 +45,7 @@ conda install -c python-for-hpc -c conda-forge pyomp
 
 | PyOMP | Numba           |
 | ----- | --------------- |
+| 0.5.x | 0.62.x - 0.63.x |
 | 0.4.x | 0.61.x          |
 | 0.3.x | 0.57.x - 0.60.x |
 

diff --git a/buildscripts/cibuildwheel/setup-miniconda3.sh b/buildscripts/cibuildwheel/setup-miniconda3.sh
@@ -23,6 +23,6 @@ echo "Miniconda installed"
 source "_stage/miniconda3/bin/activate" base
 export CONDA_PLUGINS_AUTO_ACCEPT_TOS=true
 
-# Create clangdev ${LLVM_VERSION}
-echo "Installing manylinux llvmdev ${LLVM_VERSION}..."
-conda create -n llvmdev-${LLVM_VERSION} -c conda-forge -q -y clang=${LLVM_VERSION} clang-tools=${LLVM_VERSION} llvmdev=${LLVM_VERSION}
+# Create conda environment with tools and libraries for the LLVM_VERSION.
+echo "Installing llvmdev ${LLVM_VERSION}..."
+conda create -n llvmdev-${LLVM_VERSION} -c conda-forge -q -y clang=${LLVM_VERSION} clangxx=${LLVM_VERSION} clang-tools=${LLVM_VERSION} llvmdev=${LLVM_VERSION} zstd
diff --git a/buildscripts/conda-recipes/pyomp/meta.yaml b/buildscripts/conda-recipes/pyomp/meta.yaml
@@ -1,5 +1,5 @@
 {% set version = environ.get('GIT_DESCRIBE_TAG', '0.0.0').lstrip('v') %}
-{% set LLVM_VERSION = environ.get('LLVM_VERSION', '15.0.7') %}
+{% set LLVM_VERSION = environ.get('LLVM_VERSION', '20.1.8') %}
 
 package:
   name: pyomp
@@ -15,8 +15,11 @@ build:
   script:
     - export LLVM_VERSION={{ LLVM_VERSION }}
     - export LLVM_DIR=${PREFIX}
+    - export CC=${PREFIX}/bin/clang
+    - export CXX=${PREFIX}/bin/clang++
     - export VERBOSE=1
     - export CPPFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -isystem ${PREFIX}/include -D_FORTIFY_SOURCE=2" # [osx]
+    - export ENABLE_BUNDLED_LIBOMPTARGET=1 # [linux]
     - rm -rf build dist src/*.egg-info
     - {{ PYTHON }} -m pip install -v .
 
@@ -28,6 +31,7 @@ requirements:
     - sysroot_linux-64       # [linux64]
     - sysroot_linux-aarch64  # [aarch64]
     - cmake
+    - ninja
     - setuptools_scm
     - elfutils # [linux]
     - libffi # [linux]
@@ -39,55 +43,32 @@ requirements:
     - sysroot_linux-aarch64  # [aarch64]
     - setuptools
     - setuptools_scm
-    - numba >=0.61, <0.62
+    - numba >=0.62, <0.64
     - clang {{ LLVM_VERSION }}
+    - clangxx {{ LLVM_VERSION }}
     - clang-tools {{ LLVM_VERSION }}
     - llvmdev {{ LLVM_VERSION }}
     - zlib
+    # require llvm-openmp for the openmp cpu runtime.
+    - llvm-openmp {{ LLVM_VERSION }}
     - elfutils # [linux]
     - libffi # [linux]
   run:
     - python
     - setuptools
-    - numba >=0.61, <0.62
+    - numba >=0.62, <0.64
+    # require llvm-openmp for the openmp cpu runtime.
+    - llvm-openmp {{ LLVM_VERSION }}
     - lark
     - cffi
 
 test:
   commands:
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomp.dylib                        # [osx]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomp.so                           # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx1010.bc      # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx1030.bc      # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx1031.bc      # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx700.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx701.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx801.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx803.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx900.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx902.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx906.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx908.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-amdgpu-gfx90a.bc       # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_35.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_37.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_50.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_52.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_53.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_60.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_61.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_62.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_70.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_72.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_75.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_80.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget-nvptx-sm_86.bc         # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget.rtl.amdgpu.so          # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget.rtl.cuda.so            # [linux]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget.rtl.ppc64.so           # [linux and ppc64le]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget.rtl.x86_64.so          # [linux and x86_64]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget.rtl.aarch64.so         # [linux and aarch64]
-    - test -f $SP_DIR/numba/openmp/libs/libomp/lib/libomptarget.so                     # [linux]
+    - test -f $SP_DIR/numba/openmp/libs/pass/libIntrinsicsOpenMP.dylib                 # [osx]
+    - test -f $SP_DIR/numba/openmp/libs/pass/libIntrinsicsOpenMP.so                    # [linux]
+    - test -f $SP_DIR/numba/openmp/libs/openmp/lib/libomptarget-amdgpu.bc        # [linux]
+    - test -f $SP_DIR/numba/openmp/libs/openmp/lib/libomptarget-nvptx.bc         # [linux]
+    - test -f $SP_DIR/numba/openmp/libs/openmp/lib/libomptarget.so               # [linux]
 
 about:
   home: https://github.com/Python-for-HPC/PyOMP

diff --git a/buildscripts/gitlab/build-and-test.sh b/buildscripts/gitlab/build-and-test.sh
@@ -4,11 +4,12 @@ set -e
 
 # Create a unique temporary directory for this job.
 TMPDIR=/tmp/pyomp/${CI_JOB_ID}
+rm -rf ${TMPDIR}
 mkdir -p ${TMPDIR}
 pushd ${TMPDIR}
 
 # Set the LLVM_VERSION to use.
-export LLVM_VERSION="15.0.7"
+export LLVM_VERSION="20.1.8"
 
 # Set the envs directory under the temporary directory.
 export CONDA_ENVS_DIRS="${TMPDIR}/_stage/miniconda3/envs"
@@ -17,14 +18,18 @@ export CONDA_ENVS_DIRS="${TMPDIR}/_stage/miniconda3/envs"
 source ${CI_PROJECT_DIR}/buildscripts/cibuildwheel/setup-miniconda3.sh
 
 # Export environment variables for building and testing.
+export ENABLE_BUNDLED_LIBOMP="1"
+export ENABLE_BUNDLED_LIBOMPTARGET="1"
 export LLVM_DIR="${CONDA_ENVS_DIRS}/llvmdev-${LLVM_VERSION}"
-export PATH="${CONDA_ENVS_DIRS}/llvmdev-${LLVM_VERSION}/bin:${PATH}"
+export CMAKE_PREFIX_PATH="${CONDA_PREFIX}"
 export USE_CXX11_ABI="1"
 export PIP_NO_INPUT="1"
 
 # Create and activate a conda environment with the desired Python version.
 conda create -n py-${PYOMP_CI_PYTHON_VERSION} -c conda-forge -y python=${PYOMP_CI_PYTHON_VERSION}
 conda activate py-${PYOMP_CI_PYTHON_VERSION}
+# Add extra packages needed to build openmp libraries.
+conda install -c conda-forge -y zstd libffi
 
 # Clone and fetch the commit with history for package versioning.
 git clone https://github.com/${GITHUB_PROJECT_ORG}/${GITHUB_PROJECT_NAME}.git --single-branch
@@ -33,7 +38,7 @@ git fetch origin ${CI_COMMIT_SHA}
 git checkout ${CI_COMMIT_SHA}
 
 # Install pyomp.
-CC=gcc CXX=g++ python -m pip install -v .
+CC=clang CXX=clang++ python -m pip install -v .
 
 # Run host OpenMP tests.
 TEST_DEVICES=0 RUN_TARGET=0 python -m numba.runtests -v -- numba.openmp.tests.test_openmp

diff --git a/examples/ploop.1.py b/examples/ploop.1.py
@@ -1,13 +1,14 @@
-import numba
+from numba.openmp import njit
 from numba.openmp import openmp_context as openmp
-from numba.openmp import omp_set_num_threads, omp_get_thread_num, omp_get_num_threads, omp_get_wtime
 import numpy as np
 
-@numba.njit
+
+@njit
 def simple(n, a, b):
     with openmp("parallel for"):
         for i in range(1, n):
-            b[i] = (a[i] + a[i-1]) / 2.0
+            b[i] = (a[i] + a[i - 1]) / 2.0
+
 
 a = np.ones(100)
 b = np.empty(len(a))

diff --git a/pyproject.toml b/pyproject.toml
@@ -1,13 +1,13 @@
 [build-system]
-requires = ["setuptools>=75.3", "wheel", "setuptools-scm>=8", "cmake>=3.20"]
+requires = ["setuptools>=75.3", "setuptools-scm>=8", "cmake>=3.20", "ninja"]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "pyomp"
 dynamic = ["version"]
 description = "Python OpenMP library based on Numba"
 readme = "README.md"
-requires-python = ">=3.10, <3.14"
+requires-python = ">=3.10, <3.15"
 license = "BSD-2-Clause"
 license-files = ["LICENSE", "LICENSE-OPENMP.txt"]
 classifiers = [
@@ -17,7 +17,7 @@ classifiers = [
     "Intended Audience :: Developers",
     "Topic :: Software Development :: Compilers",
 ]
-dependencies = ["numba>=0.61, <0.62", "lark", "cffi", "setuptools"]
+dependencies = ["numba>=0.62, <0.64", "lark", "cffi", "setuptools"]
 maintainers = [
     { name = "Giorgis Georgakoudis", email = "georgakoudis1@llnl.gov" },
 ]
@@ -37,7 +37,7 @@ include = ["numba.openmp*"]
 
 # Bundle the CMake-installed artifacts into the wheel.
 [tool.setuptools.package-data]
-"numba.openmp.libs" = ["pass/*", "libomp/**/*"]
+"numba.openmp.libs" = ["pass/*", "openmp/**/*"]
 
 # setuptools-scm config
 [tool.setuptools_scm]
@@ -49,7 +49,6 @@ archs = ["native"]
 # Pass LLVM_VERSION from the host environment to cibuildwheel.
 environment-pass = ["LLVM_VERSION"]
 # We use miniconda3 to get the clang/llvm toolchain on Linux.
-before-all = ["bash buildscripts/cibuildwheel/setup-miniconda3.sh"]
 before-build = ["rm -rf build dist src/*.egg-info"]
 skip = ["*-musllinux_*", "cp38-*"]
 test-command = [
@@ -59,14 +58,32 @@ test-command = [
     "OMP_TARGET_OFFLOAD=mandatory TEST_DEVICES=1 RUN_TARGET=1 python -m numba.runtests -v -- numba.openmp.tests.test_openmp.TestOpenmpTarget",
 ]
 
+[tool.cibuildwheel.environment]
+USE_CXX11_ABI = "1"
+PIP_NO_INPUT = "1"
+
 [tool.cibuildwheel.linux]
 before-all = [
-    "yum install -y elfutils-libelf-devel libffi-devel",
-    "bash buildscripts/cibuildwheel/setup-miniconda3.sh",
+    "yum install -y elfutils-libelf-devel libffi-devel clang-devel-20.1.8 llvm-devel-20.1.8",
 ]
 
-[tool.cibuildwheel.environment]
-LLVM_DIR = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}"
-PATH = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}/bin:${PATH}"
-USE_CXX11_ABI = "1"
-PIP_NO_INPUT = "1"
+[tool.cibuildwheel.linux.environment]
+ENABLE_BUNDLED_LIBOMP = "1"
+ENABLE_BUNDLED_LIBOMPTARGET = "1"
+LLVM_DIR = "/usr/lib64/cmake/llvm"
+CC = "/usr/bin/clang"
+CXX = "/usr/bin/clang++"
+
+[tool.cibuildwheel.macos]
+before-all = ["bash buildscripts/cibuildwheel/setup-miniconda3.sh"]
+
+[tool.cibuildwheel.macos.environment]
+ENABLE_BUNDLED_LIBOMP = "1"
+LLVM_DIR = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}/lib/cmake/llvm"
+CC = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}/bin/clang"
+CXX = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}/bin/clang++"
+# Set the deplioyment target to macOS 11.0.
+MACOSX_DEPLOYMENT_TARGET = "11.0"
+# Set the cmake prefix path to find libraries in the conda environment which is
+# compatible with the macos target.
+CMAKE_PREFIX_PATH = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}/"
-Original file line number
+Diff line change
@@ Expand Up / @@ -56,6 +56,7 @@ variables: @@
             - "3.11"
             - "3.12"
             - "3.13"
+            - "3.14"
     build-and-test-tioga:
       extends: [.base-job, .python-variants]
Original file line number	Diff line number	Diff line change
		@@ -1 +1 @@
		recursive-include src/numba/openmp/libs *
		recursive-include src/numba/openmp/libs .py .so .a .bc