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FIX FlexiBLAS CI default backend and scope script hang #296

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Merged
ogrisel merged 2 commits into from
Nov 5, 2026
Merged

FIX FlexiBLAS CI default backend and scope script hang #296

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ogrisel Nov 5, 2026
3224de8
FIX CI: use FLEXIBLAS_DEFAULT_BLAS CMake option and avoid hang in sco…
ogrisel Nov 5, 2026
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6 changes: 5 additions & 1 deletion continuous_integration/install_flexiblas.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ cmake ../ -DCMAKE_INSTALL_PREFIX=$ABS_PATH"/flexiblas_install" \
-DCMAKE_Fortran_COMPILER_LAUNCHER=ccache \
-DBLAS_AUTO_DETECT="OFF" \
-DEXTRA="OPENBLAS_CONDA" \
-DFLEXIBLAS_DEFAULT="OPENBLAS_CONDA" \
-DFLEXIBLAS_DEFAULT_BLAS="OPENBLAS_CONDA" \
-DTESTS=OFF \
-DOPENBLAS_CONDA_LIBRARY=$CONDA_PREFIX"/lib/libopenblas"$EXTENSION

Expand All @@ -58,6 +58,10 @@ fi

# Check that all 3 BLAS are listed in FlexiBLAS configuration
$ABS_PATH/flexiblas_install/bin/flexiblas list

# FlexiBLAS silently falls back to NETLIB if the requested default is
# ignored (e.g. when the CMake option is renamed upstream).
grep -rq "default = OPENBLAS_CONDA" $ABS_PATH/flexiblas_install/etc/
popd
popd

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8 changes: 5 additions & 3 deletions tests/empirical_scope_observation.py
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Expand Up @@ -98,10 +98,12 @@ def run(which: str) -> None:

num_python_threads = 10 * cpu_count()
count_threads = start_counting_threads()
if not func(num_python_threads):
count_threads()
try:
available = func(num_python_threads)
finally:
max_num_threads = count_threads()
if not available:
return
max_num_threads = count_threads()

# We're creating os.cpu_count() * 10 Python threads, and asking for 2
# native threads. If number is close to number of Python threads, we'll
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