Deployment is failing on main

[sacpis]

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Describe the bug

Deployment is failing with Segmentation fault on the main branch due to failure in test_mpi_api.py

Steps to reproduce the bug

Here is the job
https://github.com/NVIDIA/cuda-quantum/actions/runs/13335693612/job/37254100357#step:8:6360

Fatal Python error: Segmentation fault

Current thread 0x0000e3b78e679800 (most recent call first):
  File "/tmp/tests/parallel/test_mpi_api.py", line 19 in testMPI
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/python.py", line 159 in pytest_pyfunc_call
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/python.py", line 1627 in runtest
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/runner.py", line 174 in pytest_runtest_call
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/runner.py", line 242 in <lambda>
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/runner.py", line 341 in from_call
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/runner.py", line 241 in call_and_report
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/runner.py", line 132 in runtestprotocol
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/runner.py", line 113 in pytest_runtest_protocol
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/main.py", line 362 in pytest_runtestloop
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/main.py", line 337 in _main
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/main.py", line 283 in wrap_session
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/main.py", line 330 in pytest_cmdline_main
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/config/__init__.py", line 175 in main
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/_pytest/config/__init__.py", line 201 in console_main
  File "/root/miniconda3/envs/cudaq-env/lib/python3.11/site-packages/pytest/__main__.py", line 9 in <module>
  File "<frozen runpy>", line 88 in _run_code
  File "<frozen runpy>", line 198 in _run_module_as_main

Extension modules: numpy._core._multiarray_umath, numpy.linalg._umath_linalg, scipy._lib._ccallback_c, cuquantum.bindings._utils, cuquantum.bindings._internal.cudensitymat, cuquantum.bindings.cycudensitymat, cuquantum.bindings.cudensitymat, cuquantum._utils, cuquantum.custatevec._internal.custatevec, cuquantum.custatevec.cycustatevec, cuquantum.custatevec.custatevec, cupy_backends.cuda._softlink, cupy_backends.cuda.api._runtime_enum, cupy_backends.cuda.api.runtime, cupy._util, cupy.cuda.device, fastrlock.rlock, cupy.cuda.memory_hook, cupy_backends.cuda.stream, cupy.cuda.graph, cupy.cuda.stream, cupy_backends.cuda.api._driver_enum, cupy_backends.cuda.api.driver, cupy.cuda.memory, cupy._core.internal, cupy._core._carray, cupy.cuda.texture, cupy.cuda.function, cupy_backends.cuda.libs.nvrtc, cupy.cuda.pinned_memory, cupy.cuda.common, cupy.cuda.cub, cupy_backends.cuda.libs.nvtx, cupy.cuda.thrust, cupy._core._dtype, cupy._core._scalar, cupy._core._accelerator, cupy._core._memory_range, cupy._core._fusion_thread_local, cupy._core._kernel, cupy._core._routines_manipulation, cupy._core._routines_binary, cupy._core._optimize_config, cupy._core._cub_reduction, cupy._core._reduction, cupy._core._routines_math, cupy._core._routines_indexing, cupy._core._routines_linalg, cupy._core._routines_logic, cupy._core._routines_sorting, cupy._core._routines_statistics, cupy._core.dlpack, cupy._core.flags, cupy._core.core, cupy._core._fusion_variable, cupy._core._fusion_trace, cupy._core._fusion_kernel, cupy._core.new_fusion, cupy._core.fusion, cupy._core.raw, numpy.random._common, numpy.random.bit_generator, numpy.random._bounded_integers, numpy.random._mt19937, numpy.random.mtrand, numpy.random._philox, numpy.random._pcg64, numpy.random._sfc64, numpy.random._generator, charset_normalizer.md, scipy.sparse._sparsetools, _csparsetools, scipy.sparse._csparsetools, scipy.linalg._fblas, scipy.linalg._flapack, scipy.linalg.cython_lapack, scipy.linalg._cythonized_array_utils, scipy.linalg._solve_toeplitz, scipy.linalg._decomp_lu_cython, scipy.linalg._matfuncs_sqrtm_triu, scipy.linalg._matfuncs_expm, scipy.linalg._linalg_pythran, scipy.linalg.cython_blas, scipy.linalg._decomp_update, scipy.sparse.linalg._dsolve._superlu, scipy.sparse.linalg._eigen.arpack._arpack, scipy.sparse.linalg._propack._spropack, scipy.sparse.linalg._propack._dpropack, scipy.sparse.linalg._propack._cpropack, scipy.sparse.linalg._propack._zpropack, scipy.sparse.csgraph._tools, scipy.sparse.csgraph._shortest_path, scipy.sparse.csgraph._traversal, scipy.sparse.csgraph._min_spanning_tree, scipy.sparse.csgraph._flow, scipy.sparse.csgraph._matching, scipy.sparse.csgraph._reordering, cupy.fft._cache, cupy.fft._callback, cupy.random._bit_generator, scipy._lib._uarray._uarray, scipy.special._ufuncs_cxx, scipy.special._ufuncs, scipy.special._specfun, scipy.special._comb, scipy.special._ellip_harm_2, cupy.lib._polynomial, cuquantum.cutensornet._internal.cutensornet, cuquantum.cutensornet.cycutensornet, cuquantum.cutensornet.cutensornet, scipy.integrate._odepack, scipy.integrate._quadpack, scipy.integrate._vode, scipy.integrate._dop, scipy.integrate._lsoda, scipy.optimize._group_columns, scipy._lib.messagestream, scipy.optimize._trlib._trlib, scipy.optimize._lbfgsb, _moduleTNC, scipy.optimize._moduleTNC, scipy.optimize._cobyla, scipy.optimize._slsqp, scipy.optimize._minpack, scipy.optimize._lsq.givens_elimination, scipy.optimize._zeros, scipy.optimize._cython_nnls, scipy.linalg._decomp_interpolative, scipy.optimize._bglu_dense, scipy.optimize._lsap, scipy.spatial._ckdtree, scipy.spatial._qhull, scipy.spatial._voronoi, scipy.spatial._distance_wrap, scipy.spatial._hausdorff, scipy.spatial.transform._rotation, scipy.optimize._direct (total: 137)
tmp/tests/parallel/test_mpi_api.py::testMPI 
collecting 1 item                                                              
collected 1 item                                                               

collecting 1 item                                                              
collected 1 item                                                               

tmp/tests/parallel/test_mpi_api.py::testMPI 
tmp/tests/parallel/test_mpi_api.py::testMPI 
collecting 1 item                                                              
collected 1 item                                                               

Fatal Python error: Segmentation fault

Current thread 0x0000f777b2a9c800 (most recent call first):
  File "/tmp/tests/parallel/test_mpi_api.py", line 19 in Fatal Python error: Segmentation fault

Expected behavior

Should run successfully

Is this a regression? If it is, put the last known working version (or commit) here.

Not a regression

Environment

• CUDA-Q version: 11272024
• Python version: 3.10.12
• C++ compiler: 11272024
• Operating system:

Suggestions

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