openmm.OpenMMException: There is no registered Platform called "CPU"

[goddard@…]

The new OpenMM 7.7.0 for Linux provided by Tristan in #7857 apparently does not support the CPU platform.

The following bug report has been submitted:
Platform:        Linux-5.4.0-120-generic-x86_64-with-glibc2.31
ChimeraX Version: 1.6.dev202210281747 (2022-10-28 17:47:30 UTC)
Description
After fixing the RUNPATH in the new OpenMM provided by Tristan openmm can be imported but apparently it does not support the CPU platform.  This machine has only Intel graphics.

Log:
UCSF ChimeraX version: 1.6.dev202210281747 (2022-10-28)  
© 2016-2022 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open /home/goddard/Downloads/test_openmm.py

executed test_openmm.py  

> open 1mtx format mmcif fromDatabase pdb

1mtx title:  
Determination of the three-dimensional structure of margatoxin by 1H, 13C, 15N
triple-resonance nuclear magnetic resonance spectroscopy [more info...]  
  
Chain information for 1mtx  
---  
Chain | Description | UniProt  
1.1/A 1.2/A 1.3/A 1.4/A 1.5/A 1.6/A 1.7/A 1.8/A 1.9/A 1.10/A 1.11/A 1.12/A
1.13/A 1.14/A 1.15/A 1.16/A 1.17/A 1.18/A 1.19/A 1.20/A 1.21/A 1.22/A 1.23/A |
MARGATOXIN | SCKM_CENMA  
  

> close #1.2-30

> hide cartoons

> show atoms

> ui mousemode right tug

Traceback (most recent call last):  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/chimerax/mouse_modes/mousemodes.py", line 637, in <lambda>  
gw.mousePressEvent = lambda e, s=self: s._dispatch_mouse_event(e,
"mouse_down")  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/chimerax/mouse_modes/mousemodes.py", line 537, in
_dispatch_mouse_event  
f(MouseEvent(event, modifiers=modifiers))  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/chimerax/tug/tugatoms.py", line 77, in mouse_down  
self._pick_atom(pick)  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/chimerax/tug/tugatoms.py", line 86, in _pick_atom  
self._tugger = st = StructureTugger(a.structure)  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/chimerax/tug/tugatoms.py", line 248, in __init__  
self._create_openmm_system()  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/chimerax/tug/tugatoms.py", line 435, in _create_openmm_system  
platform = mm.Platform.getPlatformByName(self._platform_name)  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/openmm/openmm.py", line 11695, in getPlatformByName  
return _openmm.Platform_getPlatformByName(name)  
openmm.OpenMMException: There is no registered Platform called "CPU"  
  
openmm.OpenMMException: There is no registered Platform called "CPU"  
  
File "/home/goddard/ucsf/chimerax/ChimeraX.app/lib/python3.9/site-
packages/openmm/openmm.py", line 11695, in getPlatformByName  
return _openmm.Platform_getPlatformByName(name)  
  
See log for complete Python traceback.  
  




OpenGL version: 4.6 (Core Profile) Mesa 21.2.6
OpenGL renderer: Mesa Intel(R) HD Graphics 6000 (BDW GT3)
OpenGL vendor: Intel

Python: 3.9.11
Locale: en_US.UTF-8
Qt version: PyQt6 6.3.1, Qt 6.3.1
Qt runtime version: 6.3.2
Qt platform: xcb

XDG_SESSION_TYPE=x11
DESKTOP_SESSION=ubuntu
XDG_SESSION_DESKTOP=ubuntu
XDG_CURRENT_DESKTOP=ubuntu:GNOME
DISPLAY=:0
Manufacturer: unknown
Model: unknown
OS: Ubuntu 20.04 Focal Fossa
Architecture: 64bit ELF
Virtual Machine: none
CPU: 4 Intel(R) Core(TM) i5-5250U CPU @ 1.60GHz
Cache Size: 3072 KB
Memory:
	              total        used        free      shared  buff/cache   available
	Mem:           15Gi       1.8Gi       178Mi       597Mi        13Gi        12Gi
	Swap:         2.0Gi       2.0Mi       2.0Gi

Graphics:
	00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 6000 [8086:1626] (rev 09)	
	Subsystem: Intel Corporation HD Graphics 6000 [8086:2057]	
	Kernel driver in use: i915

Installed Packages:
    alabaster: 0.7.12
    appdirs: 1.4.4
    asttokens: 2.0.8
    Babel: 2.10.3
    backcall: 0.2.0
    blockdiag: 3.0.0
    build: 0.8.0
    certifi: 2022.9.24
    cftime: 1.6.2
    charset-normalizer: 2.1.1
    ChimeraX-AddCharge: 1.4
    ChimeraX-AddH: 2.2.1
    ChimeraX-AlignmentAlgorithms: 2.0
    ChimeraX-AlignmentHdrs: 3.3
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 2.8
    ChimeraX-AlphaFold: 1.0
    ChimeraX-AltlocExplorer: 1.0.3
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Arrays: 1.0
    ChimeraX-Atomic: 1.43.3
    ChimeraX-AtomicLibrary: 8.0.3
    ChimeraX-AtomSearch: 2.0.1
    ChimeraX-AxesPlanes: 2.3
    ChimeraX-BasicActions: 1.1.2
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 2.1.2
    ChimeraX-BondRot: 2.0.1
    ChimeraX-BugReporter: 1.0.1
    ChimeraX-BuildStructure: 2.7.1
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.2
    ChimeraX-ButtonPanel: 1.0.1
    ChimeraX-CageBuilder: 1.0.1
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.3.1
    ChimeraX-ChangeChains: 1.0.2
    ChimeraX-CheckWaters: 1.3
    ChimeraX-ChemGroup: 2.0
    ChimeraX-Clashes: 2.2.4
    ChimeraX-ColorActions: 1.0.3
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.5.2
    ChimeraX-CommandLine: 1.2.5
    ChimeraX-ConnectStructure: 2.0.1
    ChimeraX-Contacts: 1.0.1
    ChimeraX-Core: 1.6.dev202210281747
    ChimeraX-CoreFormats: 1.1
    ChimeraX-coulombic: 1.3.2
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0.1
    ChimeraX-DataFormats: 1.2.2
    ChimeraX-Dicom: 1.1
    ChimeraX-DistMonitor: 1.3
    ChimeraX-DockPrep: 1.0
    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ExperimentalCommands: 1.0
    ChimeraX-FileHistory: 1.0.1
    ChimeraX-FunctionKey: 1.0.1
    ChimeraX-Geometry: 1.2
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.1
    ChimeraX-Hbonds: 2.4
    ChimeraX-Help: 1.2.1
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.1
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-Label: 1.1.7
    ChimeraX-LinuxSupport: 1.0.1
    ChimeraX-ListInfo: 1.1.1
    ChimeraX-Log: 1.1.5
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.8.2
    ChimeraX-Map: 1.1.2
    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0.1
    ChimeraX-MapFilter: 2.0
    ChimeraX-MapFit: 2.0
    ChimeraX-MapSeries: 2.1.1
    ChimeraX-Markers: 1.0.1
    ChimeraX-Mask: 1.0.1
    ChimeraX-MatchMaker: 2.0.9
    ChimeraX-MDcrds: 2.6
    ChimeraX-MedicalToolbar: 1.0.2
    ChimeraX-Meeting: 1.0.1
    ChimeraX-MLP: 1.1
    ChimeraX-mmCIF: 2.8
    ChimeraX-MMTF: 2.2
    ChimeraX-Modeller: 1.5.6
    ChimeraX-ModelPanel: 1.3.6
    ChimeraX-ModelSeries: 1.0.1
    ChimeraX-Mol2: 2.0
    ChimeraX-Mole: 1.0
    ChimeraX-Morph: 1.0.1
    ChimeraX-MouseModes: 1.1.1
    ChimeraX-Movie: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nucleotides: 2.0.3
    ChimeraX-OpenCommand: 1.9.1
    ChimeraX-PDB: 2.6.8
    ChimeraX-PDBBio: 1.0
    ChimeraX-PDBLibrary: 1.0.2
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0.1
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.1
    ChimeraX-PubChem: 2.1
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.1
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.0
    ChimeraX-RenumberResidues: 1.1
    ChimeraX-ResidueFit: 1.0.1
    ChimeraX-RestServer: 1.1
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 2.0.1
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5.1
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.8
    ChimeraX-Shape: 1.0.1
    ChimeraX-Shell: 1.0.1
    ChimeraX-Shortcuts: 1.1.1
    ChimeraX-ShowSequences: 1.0.1
    ChimeraX-SideView: 1.0.1
    ChimeraX-Smiles: 2.1
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.10
    ChimeraX-STL: 1.0
    ChimeraX-Storm: 1.0
    ChimeraX-StructMeasure: 1.1
    ChimeraX-Struts: 1.0.1
    ChimeraX-Surface: 1.0
    ChimeraX-SwapAA: 2.0.1
    ChimeraX-SwapRes: 2.1.3
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.1.2
    ChimeraX-ToolshedUtils: 1.2.1
    ChimeraX-Tug: 1.0.1
    ChimeraX-UI: 1.25.1
    ChimeraX-uniprot: 2.2.1
    ChimeraX-UnitCell: 1.0.1
    ChimeraX-ViewDockX: 1.1.4
    ChimeraX-VIPERdb: 1.0
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0.1
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0.1
    ChimeraX-WebServices: 1.1.0
    ChimeraX-Zone: 1.0.1
    colorama: 0.4.5
    cxservices: 1.2
    cycler: 0.11.0
    Cython: 0.29.32
    debugpy: 1.6.3
    decorator: 5.1.1
    distro: 1.7.0
    docutils: 0.19
    entrypoints: 0.4
    executing: 1.1.1
    filelock: 3.7.1
    fonttools: 4.38.0
    funcparserlib: 1.0.0
    grako: 3.16.5
    h5py: 3.7.0
    html2text: 2020.1.16
    idna: 3.4
    ihm: 0.33
    imagecodecs: 2022.7.31
    imagesize: 1.4.1
    importlib-metadata: 5.0.0
    ipykernel: 6.15.3
    ipython: 8.4.0
    ipython-genutils: 0.2.0
    jedi: 0.18.1
    Jinja2: 3.1.2
    jupyter-client: 7.3.4
    jupyter-core: 4.11.2
    kiwisolver: 1.4.4
    line-profiler: 3.5.1
    lxml: 4.9.1
    lz4: 4.0.2
    MarkupSafe: 2.1.1
    matplotlib: 3.5.2
    matplotlib-inline: 0.1.6
    msgpack: 1.0.4
    nest-asyncio: 1.5.6
    netCDF4: 1.6.0
    networkx: 2.8.5
    numexpr: 2.8.4
    numpy: 1.23.1
    openvr: 1.23.701
    packaging: 21.3
    ParmEd: 3.4.3
    parso: 0.8.3
    pep517: 0.13.0
    pexpect: 4.8.0
    pickleshare: 0.7.5
    Pillow: 9.2.0
    pip: 22.2.2
    pkginfo: 1.8.3
    prompt-toolkit: 3.0.31
    psutil: 5.9.1
    ptyprocess: 0.7.0
    pure-eval: 0.2.2
    pycollada: 0.7.2
    pydicom: 2.3.0
    Pygments: 2.12.0
    PyOpenGL: 3.1.5
    PyOpenGL-accelerate: 3.1.5
    pyparsing: 3.0.9
    PyQt6: 6.3.1
    PyQt6-Qt6: 6.3.2
    PyQt6-sip: 13.4.0
    PyQt6-WebEngine: 6.3.1
    PyQt6-WebEngine-Qt6: 6.3.2
    python-dateutil: 2.8.2
    pytz: 2022.5
    pyzmq: 24.0.1
    qtconsole: 5.3.1
    QtPy: 2.2.1
    RandomWords: 0.4.0
    requests: 2.28.1
    scipy: 1.9.0
    setuptools: 65.1.1
    sfftk-rw: 0.7.2
    six: 1.16.0
    snowballstemmer: 2.2.0
    sortedcontainers: 2.4.0
    Sphinx: 5.1.1
    sphinx-autodoc-typehints: 1.19.1
    sphinxcontrib-applehelp: 1.0.2
    sphinxcontrib-blockdiag: 3.0.0
    sphinxcontrib-devhelp: 1.0.2
    sphinxcontrib-htmlhelp: 2.0.0
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 1.0.3
    sphinxcontrib-serializinghtml: 1.1.5
    stack-data: 0.5.1
    tables: 3.7.0
    tifffile: 2022.7.31
    tinyarray: 1.2.4
    tomli: 2.0.1
    tornado: 6.2
    traitlets: 5.3.0
    urllib3: 1.26.12
    wcwidth: 0.2.5
    webcolors: 1.12
    wheel: 0.37.1
    wheel-filename: 1.4.1
    zipp: 3.10.0