TSEL.IVFFSQ c++ unit test fails on my machine

[alexanderguzhva]

Summary

Platform

OS: Linux

Faiss version: 9c79e3d (from March 20, 2024)

Installed from: compiled using GCC 11.4 and clang 18.1.0, the problem exists for both compilers

Faiss compilation options: cmake -B build -DFAISS_ENABLE_GPU=OFF -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Release -DFAISS_OPT_LEVEL=avx2 .

Reproduction instructions

cmake -B build -DFAISS_ENABLE_GPU=OFF -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Release -DFAISS_OPT_LEVEL=avx2 .
make -C build faiss_avx2
make -C build faiss_test
build/tests/faiss_test

Here is the log:

[ RUN      ] TSEL.IVFFSQ
WARNING clustering 1000 points to 32 centroids: please provide at least 1248 training points
/home/ubuntu/faiss_180_baseline/faiss/tests/test_params_override.cpp:205: Failure
Expected equality of these values:
  err
    Which is: 1
  0
[  FAILED  ] TSEL.IVFFSQ (272 ms)

cmake logs (for gcc 11.4)

-- The CXX compiler identification is GNU 11.4.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_CXX: -fopenmp (found version "4.5") 
-- Found OpenMP: TRUE (found version "4.5")  
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
-- Could NOT find MKL (missing: MKL_LIBRARIES) 
-- Looking for sgemm_
-- Looking for sgemm_ - not found
-- Looking for sgemm_
-- Looking for sgemm_ - found
-- Found BLAS: /usr/lib/x86_64-linux-gnu/libopenblas.so  
-- Looking for cheev_
-- Looking for cheev_ - found
-- Found LAPACK: /usr/lib/x86_64-linux-gnu/libopenblas.so;-lm;-ldl  
-- Found SWIG: /usr/bin/swig4.0 (found version "4.0.2") found components: python 
-- Found Python: /usr/include/python3.10 (found version "3.10.12") found components: Development NumPy Interpreter Development.Module Development.Embed 
-- Configuring done (1.6s)
-- Generating done (0.1s)