Random results/crashes when getting skin results

janvonrickenbach commented 1 month ago

Before submitting the issue

[X] I have checked for Compatibility issues
[X] I have searched among the existing issues
[X] I am using a Python virtual environment

Description of the bug

The following snipped reads strains from a distributed rst file. The resulting array (res.array) has a random size every time the script is run (usually 220 or 216). Sometimes the script also crashes.

To reproduce:

Download the attached file, remove the png extension and unpack the archive.
set data_directory to the folder where you extracted the archive
Run the script below => the assertion fails with either a value of 216, 220.

Notes:

Running the server in a pydpf-composite docker container and connecting to it yields always the same result (224)
Setting the skin flag to False results in always the same results

import os
from ansys.dpf.core import DataSources
from ansys.dpf.post import StaticMechanicalSimulation
from ansys.dpf.post.simulation import ResultCategory

data_directory = 
distributed_files = [
    os.path.join(data_directory, f"file{i}.rst") for i in range(4)
]

ds = DataSources()
for domain_id, file_path in enumerate(distributed_files):
    ds.set_domain_result_file_path(file_path, domain_id)

model = StaticMechanicalSimulation(result_file=ds)

selection = model._build_selection(
    base_name="EPEL",
    category=ResultCategory.matrix,
    location="Elemental",
    skin=True,
    set_ids=[5],
    times=None,
    selection=None,
)

res = model._get_result(
    base_name="EPEL",
    location="Elemental",
    category=ResultCategory.matrix,
    selection=selection,
)
assert res.array.shape[0] == 224, res.array.shape[0]

distributed.zip

Steps To Reproduce

See above

Which Operating System are you using?

Windows

Which DPF/Ansys version are you using?

DPF Server 2025.1.pre0

Which Python version are you using?

3.10

Installed packages

annotated-types==0.7.0 ansys-dpf-core @ git+https://git@github.com/ansys/pydpf-core.git@24523e39859964b54cc8de1b07c9096f4ec804ad ansys-dpf-post @ git+https://github.com/ansys/pydpf-post.git@e47a80a336093b7e06fc07d27045b1d1a4b41627 ansys-hps-client @ git+https://github.com/ansys/pyhps.git@4512655320766fa5575491ade15dc720875b2809 anyio==4.4.0 backoff==2.2.1 backports.tarfile==1.2.0 build==1.2.1 cachetools==5.3.3 certifi==2024.2.2 cfgv==3.4.0 charset-normalizer==3.3.2 click==8.1.7 colorama==0.4.6 contourpy==1.2.1 coverage==7.5.3 cx_Freeze==6.15.16 cx_Logging==3.2.0 cycler==0.12.1 distlib==0.3.8 dnspython==2.6.1 docutils==0.21.2 email_validator==2.1.1 exceptiongroup==1.2.1 fast_simplification==0.1.7 fastapi==0.111.0 fastapi-cli==0.0.4 filelock==3.14.0 fonttools==4.52.4 google-api-core==2.19.0 google-api-python-client==2.131.0 google-auth==2.29.0 google-auth-httplib2==0.2.0 googleapis-common-protos==1.63.0 grpcio==1.64.0 h11==0.14.0 httpcore==1.0.5 httplib2==0.22.0 httptools==0.6.1 httpx==0.27.0 humanize==4.9.0 identify==2.5.36 idna==3.7 importlib_metadata==7.1.0 iniconfig==2.0.0 jaraco.classes==3.4.0 jaraco.context==5.3.0 jaraco.functools==4.0.1 Jinja2==3.1.4 keyring==25.2.1 kiwisolver==1.4.5 lief==0.14.1 markdown-it-py==3.0.0 MarkupSafe==2.1.5 marshmallow==3.21.2 marshmallow-oneofschema==3.1.1 matplotlib==3.9.0 mdurl==0.1.2 more-itertools==10.2.0 nh3==0.2.17 nodeenv==1.9.0 numpy==1.26.4 orjson==3.10.3 packaging==24.0 pandas==2.2.2 pillow==10.3.0 pkginfo==1.10.0 platformdirs==4.2.2 plotly==5.22.0 pluggy==1.5.0 pooch==1.8.1 portend==3.2.0 pre-commit==3.7.1 proto-plus==1.23.0 protobuf==4.25.3 psutil==5.9.8 pyasn1==0.6.0 pyasn1_modules==0.4.0 pydantic==2.7.0 pydantic-settings==2.2.1 pydantic_core==2.18.1 Pygments==2.18.0 PyJWT==2.8.0 pyparsing==3.1.2 pyproject_hooks==1.1.0 pytest==8.2.1 pytest-cov==5.0.0 pytest-rerunfailures==14.0 pytest-timeout==2.3.1 python-dateutil==2.9.0.post0 python-dotenv==1.0.1 python-multipart==0.0.9 pytz==2024.1 pyvista==0.43.8 pywin32-ctypes==0.2.2 PyYAML==6.0.1 readme_renderer==43.0 requests==2.32.2 requests-toolbelt==1.0.0 rfc3986==2.0.0 rich==13.7.1 rsa==4.9 scooby==0.10.0 shellingham==1.5.4 six==1.16.0 sniffio==1.3.1 starlette==0.37.2 tempora==5.5.1 tenacity==8.3.0 tomli==2.0.1 tqdm==4.66.4 twine==5.1.0 typer==0.12.3 typing_extensions==4.12.0 tzdata==2024.1 ujson==5.10.0 uritemplate==4.1.1 urllib3==2.2.1 uvicorn==0.29.0 virtualenv==20.26.2 vtk==9.3.0 watchfiles==0.22.0 websockets==12.0 zipp==3.19.0

MichaelNale commented 2 weeks ago

@janvonrickenbach I think that the link to download your rst is broken or I need access.

janvonrickenbach commented 2 weeks ago

@MichaelNale Sorry for that. I replaced the link.

ansys / pydpf-post