diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 826a62fe9f..6f762e919b 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -1,3 +1,7 @@
+# Fri Feb 21 14:06:53 2025 -0500 - markiewicz@stanford.edu - sty: black [ignore-rev]
+8ed2b2306aeb7d89de4958b5293223ffe27a4f34
+# Tue Apr 13 10:16:17 2021 -0400 - markiewicz@stanford.edu - STY: black
+b1690d5beb391e08c1e5463f1e3c641cf1e9f58e
 # Thu Oct 31 10:01:38 2024 -0400 - effigies@gmail.com - STY: black [ignore-rev]
 bd0d5856d183ba3918eda31f80db3b1d4387c55c
 # Thu Mar 21 13:34:09 2024 -0400 - effigies@gmail.com - STY: black [ignore-rev]
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5b0943c4ca..d789ec9061 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,7 +34,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v4
+        uses: astral-sh/setup-uv@v5
       - run: uv build
       - run: uvx twine check dist/*
       - uses: actions/upload-artifact@v4
@@ -102,7 +102,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v4
+        uses: astral-sh/setup-uv@v5
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
@@ -152,7 +152,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v4
+        uses: astral-sh/setup-uv@v5
       - name: Show tox config
         run: uvx tox c
       - name: Show tox config (this call)
diff --git a/.wci.yml b/.wci.yml
new file mode 100644
index 0000000000..2adbae9fcc
--- /dev/null
+++ b/.wci.yml
@@ -0,0 +1,30 @@
+# Project available at https://github.com/nipy/nipype
+
+name: nipype
+
+headline: "Neuroimaging in Python: Pipelines and Interfaces"
+
+description: |
+    Nipype, an open-source, community-developed initiative under the umbrella of NiPy, is a Python project that
+    provides a uniform interface to existing neuroimaging software and facilitates interaction between these
+    packages within a single workflow. Nipype provides an environment that encourages interactive exploration of
+    algorithms from different packages (e.g., SPM, FSL, FreeSurfer, AFNI, Slicer, ANTS), eases the design of
+    workflows within and between packages, and reduces the learning curve necessary to use different packages.
+
+language: Python3
+
+documentation:
+  general: https://nipype.readthedocs.io/en/latest/
+  installation: https://nipype.readthedocs.io/en/latest/users/install.html
+  tutorial: https://miykael.github.io/nipype_tutorial/
+
+execution_environment: 
+  resource_managers:
+    - SLURM
+    - Condor
+    - DAGMan
+    - LSF
+    - OAR
+    - PBS
+    - SGE
+    - Soma-workflow
diff --git a/doc/changelog/1.X.X-changelog.rst b/doc/changelog/1.X.X-changelog.rst
index a51ef7f13e..e31e508edf 100644
--- a/doc/changelog/1.X.X-changelog.rst
+++ b/doc/changelog/1.X.X-changelog.rst
@@ -1,3 +1,24 @@
+1.10.0 (March 19, 2025)
+=======================
+
+New feature release in the 1.10.x series.
+
+This release adds GPUs to multiprocess resource management.
+In general, no changes to existing code should be required if the GPU-enabled
+interface has a ``use_gpu`` input.
+The ``n_gpu_procs`` can be used to set the number of GPU processes that may
+be run in parallel, which will override the default of GPUs identified by
+``nvidia-smi``, or 1 if no GPUs are detected.
+
+  * FIX: Reimplement ``gpu_count()`` (https://github.com/nipy/nipype/pull/3718)
+  * FIX: Avoid 0D array in ``algorithms.misc.merge_rois`` (https://github.com/nipy/nipype/pull/3713)
+  * FIX: Allow nipype.sphinx.ext.apidoc Config to work with Sphinx 8.2.1+ (https://github.com/nipy/nipype/pull/3716)
+  * FIX: Resolve crashes when running workflows with updatehash=True (https://github.com/nipy/nipype/pull/3709)
+  * ENH: Support for gpu queue (https://github.com/nipy/nipype/pull/3642)
+  * ENH: Update to .wci.yml (https://github.com/nipy/nipype/pull/3708)
+  * ENH: Add Workflow Community Initiative (WCI) descriptor (https://github.com/nipy/nipype/pull/3608)
+
+
 1.9.2 (December 17, 2024)
 =========================
 
diff --git a/doc/interfaces.rst b/doc/interfaces.rst
index da817fa163..795574a5e6 100644
--- a/doc/interfaces.rst
+++ b/doc/interfaces.rst
@@ -8,7 +8,7 @@ Interfaces and Workflows
 :Release: |version|
 :Date: |today|
 
-Previous versions: `1.9.1 <http://nipype.readthedocs.io/en/1.9.1/>`_ `1.9.0 <http://nipype.readthedocs.io/en/1.9.0/>`_
+Previous versions: `1.9.2 <http://nipype.readthedocs.io/en/1.9.2/>`_ `1.9.1 <http://nipype.readthedocs.io/en/1.9.1/>`_
 
 Workflows
 ---------
diff --git a/nipype/algorithms/misc.py b/nipype/algorithms/misc.py
index e1a67f0b08..fe27b877a2 100644
--- a/nipype/algorithms/misc.py
+++ b/nipype/algorithms/misc.py
@@ -1490,14 +1490,13 @@ def merge_rois(in_files, in_idxs, in_ref, dtype=None, out_file=None):
 
         for cname, iname in zip(in_files, in_idxs):
             f = np.load(iname)
-            idxs = np.squeeze(f["arr_0"])
+            idxs = np.atleast_1d(np.squeeze(f["arr_0"]))
+            nels = len(idxs)
 
             for d, fname in enumerate(nii):
                 data = np.asanyarray(nb.load(fname).dataobj).reshape(-1)
                 cdata = nb.load(cname).dataobj[..., d].reshape(-1)
-                nels = len(idxs)
-                idata = (idxs,)
-                data[idata] = cdata[0:nels]
+                data[idxs] = cdata[:nels]
                 nb.Nifti1Image(data.reshape(rsh[:3]), aff, hdr).to_filename(fname)
 
         imgs = [nb.load(im) for im in nii]
diff --git a/nipype/caching/tests/test_memory.py b/nipype/caching/tests/test_memory.py
index 5bd9fad528..cd5b8f8075 100644
--- a/nipype/caching/tests/test_memory.py
+++ b/nipype/caching/tests/test_memory.py
@@ -1,5 +1,4 @@
-""" Test the nipype interface caching mechanism
-"""
+"""Test the nipype interface caching mechanism"""
 
 from .. import Memory
 from ...pipeline.engine.tests.test_engine import EngineTestInterface
diff --git a/nipype/external/cloghandler.py b/nipype/external/cloghandler.py
index 289c8dfa2f..680ba30e2e 100644
--- a/nipype/external/cloghandler.py
+++ b/nipype/external/cloghandler.py
@@ -9,7 +9,7 @@
 #   WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #   License for the specific language governing permissions and limitations
 #   under the License.
-""" cloghandler.py:  A smart replacement for the standard RotatingFileHandler
+"""cloghandler.py:  A smart replacement for the standard RotatingFileHandler
 
 ConcurrentRotatingFileHandler:  This class is a log handler which is a drop-in
 replacement for the python standard log handler 'RotateFileHandler', the primary
diff --git a/nipype/info.py b/nipype/info.py
index 3fd328e995..c546e4c2fc 100644
--- a/nipype/info.py
+++ b/nipype/info.py
@@ -1,11 +1,11 @@
-""" This file contains defines parameters for nipy that we use to fill
+"""This file contains defines parameters for nipy that we use to fill
 settings in setup.py, the nipy top-level docstring, and for building the
 docs.  In setup.py in particular, we exec this file, so it cannot import nipy
 """
 
 # nipype version information
 # Remove .dev0 for release
-__version__ = "1.9.2"
+__version__ = "1.10.0"
 
 
 def get_nipype_gitversion():
diff --git a/nipype/interfaces/ants/registration.py b/nipype/interfaces/ants/registration.py
index 91b131bbf3..55e9738170 100644
--- a/nipype/interfaces/ants/registration.py
+++ b/nipype/interfaces/ants/registration.py
@@ -1,5 +1,5 @@
 """The ants module provides basic functions for interfacing with ants
-   functions.
+functions.
 """
 
 import os
diff --git a/nipype/interfaces/ants/resampling.py b/nipype/interfaces/ants/resampling.py
index 95f29d5982..883eff1de3 100644
--- a/nipype/interfaces/ants/resampling.py
+++ b/nipype/interfaces/ants/resampling.py
@@ -1,5 +1,4 @@
-"""ANTS Apply Transforms interface
-"""
+"""ANTS Apply Transforms interface"""
 
 import os
 
diff --git a/nipype/interfaces/ants/visualization.py b/nipype/interfaces/ants/visualization.py
index c73b64c632..cdfa3529a7 100644
--- a/nipype/interfaces/ants/visualization.py
+++ b/nipype/interfaces/ants/visualization.py
@@ -1,5 +1,4 @@
-"""The ants visualisation module provides basic functions based on ITK.
-"""
+"""The ants visualisation module provides basic functions based on ITK."""
 
 import os
 
diff --git a/nipype/interfaces/bru2nii.py b/nipype/interfaces/bru2nii.py
index 746af18f1a..b07f6a58d3 100644
--- a/nipype/interfaces/bru2nii.py
+++ b/nipype/interfaces/bru2nii.py
@@ -1,5 +1,4 @@
-"""The bru2nii module provides basic functions for dicom conversion
-"""
+"""The bru2nii module provides basic functions for dicom conversion"""
 
 import os
 from .base import (
diff --git a/nipype/interfaces/camino/__init__.py b/nipype/interfaces/camino/__init__.py
index 766fa9c906..67e973df66 100644
--- a/nipype/interfaces/camino/__init__.py
+++ b/nipype/interfaces/camino/__init__.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Camino top level namespace
-"""
+"""Camino top level namespace"""
 
 from .connectivity import Conmat
 from .convert import (
diff --git a/nipype/interfaces/cmtk/base.py b/nipype/interfaces/cmtk/base.py
index d0c226dc49..c4c997288b 100644
--- a/nipype/interfaces/cmtk/base.py
+++ b/nipype/interfaces/cmtk/base.py
@@ -1,6 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-""" Base interface for cmtk """
+"""Base interface for cmtk"""
 
 from ..base import LibraryBaseInterface
 from ...utils.misc import package_check
diff --git a/nipype/interfaces/diffusion_toolkit/dti.py b/nipype/interfaces/diffusion_toolkit/dti.py
index fa031799e3..bf6336c96d 100644
--- a/nipype/interfaces/diffusion_toolkit/dti.py
+++ b/nipype/interfaces/diffusion_toolkit/dti.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various commands provided by diffusion toolkit
-"""
+"""Provides interfaces to various commands provided by diffusion toolkit"""
 import os
 import re
 
diff --git a/nipype/interfaces/diffusion_toolkit/odf.py b/nipype/interfaces/diffusion_toolkit/odf.py
index 00f86a322c..daadffc200 100644
--- a/nipype/interfaces/diffusion_toolkit/odf.py
+++ b/nipype/interfaces/diffusion_toolkit/odf.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various commands provided by diffusion toolkit
-"""
+"""Provides interfaces to various commands provided by diffusion toolkit"""
 import os
 import re
 
diff --git a/nipype/interfaces/diffusion_toolkit/postproc.py b/nipype/interfaces/diffusion_toolkit/postproc.py
index 5190843875..d05cfadff6 100644
--- a/nipype/interfaces/diffusion_toolkit/postproc.py
+++ b/nipype/interfaces/diffusion_toolkit/postproc.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various commands provided by diffusion toolkit
-"""
+"""Provides interfaces to various commands provided by diffusion toolkit"""
 
 import os
 from ..base import (
diff --git a/nipype/interfaces/dipy/base.py b/nipype/interfaces/dipy/base.py
index 1b9bdea6d5..44290cd1d7 100644
--- a/nipype/interfaces/dipy/base.py
+++ b/nipype/interfaces/dipy/base.py
@@ -1,4 +1,4 @@
-""" Base interfaces for dipy """
+"""Base interfaces for dipy"""
 
 import os.path as op
 import inspect
diff --git a/nipype/interfaces/freesurfer/longitudinal.py b/nipype/interfaces/freesurfer/longitudinal.py
index 227ea76775..41e95c091b 100644
--- a/nipype/interfaces/freesurfer/longitudinal.py
+++ b/nipype/interfaces/freesurfer/longitudinal.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various longitudinal commands provided by freesurfer
-"""
+"""Provides interfaces to various longitudinal commands provided by freesurfer"""
 
 import os
 
diff --git a/nipype/interfaces/freesurfer/model.py b/nipype/interfaces/freesurfer/model.py
index 6376c1b971..5e245a9a85 100644
--- a/nipype/interfaces/freesurfer/model.py
+++ b/nipype/interfaces/freesurfer/model.py
@@ -1,7 +1,7 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
 """The freesurfer module provides basic functions for interfacing with
-   freesurfer tools.
+freesurfer tools.
 """
 
 import os
diff --git a/nipype/interfaces/freesurfer/petsurfer.py b/nipype/interfaces/freesurfer/petsurfer.py
index 4505985127..28aa763b06 100644
--- a/nipype/interfaces/freesurfer/petsurfer.py
+++ b/nipype/interfaces/freesurfer/petsurfer.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various commands for running PET analyses provided by FreeSurfer
-"""
+"""Provides interfaces to various commands for running PET analyses provided by FreeSurfer"""
 
 import os
 
diff --git a/nipype/interfaces/freesurfer/preprocess.py b/nipype/interfaces/freesurfer/preprocess.py
index 5b2fd19a0b..89c218f969 100644
--- a/nipype/interfaces/freesurfer/preprocess.py
+++ b/nipype/interfaces/freesurfer/preprocess.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various commands provided by FreeSurfer
-"""
+"""Provides interfaces to various commands provided by FreeSurfer"""
 import os
 import os.path as op
 from glob import glob
diff --git a/nipype/interfaces/freesurfer/registration.py b/nipype/interfaces/freesurfer/registration.py
index bc70fc44a6..790066d0ec 100644
--- a/nipype/interfaces/freesurfer/registration.py
+++ b/nipype/interfaces/freesurfer/registration.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Provides interfaces to various longitudinal commands provided by freesurfer
-"""
+"""Provides interfaces to various longitudinal commands provided by freesurfer"""
 
 import os
 import os.path
diff --git a/nipype/interfaces/freesurfer/utils.py b/nipype/interfaces/freesurfer/utils.py
index 777f42f019..2c1cdbcc94 100644
--- a/nipype/interfaces/freesurfer/utils.py
+++ b/nipype/interfaces/freesurfer/utils.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Interfaces to assorted Freesurfer utility programs.
-"""
+"""Interfaces to assorted Freesurfer utility programs."""
 import os
 import re
 import shutil
diff --git a/nipype/interfaces/io.py b/nipype/interfaces/io.py
index 46cdfb44f2..d6af1ba073 100644
--- a/nipype/interfaces/io.py
+++ b/nipype/interfaces/io.py
@@ -1,14 +1,14 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-""" Set of interfaces that allow interaction with data. Currently
-    available interfaces are:
+"""Set of interfaces that allow interaction with data. Currently
+available interfaces are:
 
-    DataSource: Generic nifti to named Nifti interface
-    DataSink: Generic named output from interfaces to data store
-    XNATSource: preliminary interface to XNAT
+DataSource: Generic nifti to named Nifti interface
+DataSink: Generic named output from interfaces to data store
+XNATSource: preliminary interface to XNAT
 
-    To come :
-    XNATSink
+To come :
+XNATSink
 """
 import glob
 import fnmatch
diff --git a/nipype/interfaces/mixins/reporting.py b/nipype/interfaces/mixins/reporting.py
index 90ca804618..a836cfa3fa 100644
--- a/nipype/interfaces/mixins/reporting.py
+++ b/nipype/interfaces/mixins/reporting.py
@@ -1,6 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-""" class mixin and utilities for enabling reports for nipype interfaces """
+"""class mixin and utilities for enabling reports for nipype interfaces"""
 
 import os
 from abc import abstractmethod
diff --git a/nipype/interfaces/nipy/base.py b/nipype/interfaces/nipy/base.py
index 25aef8b873..1f8f1e4657 100644
--- a/nipype/interfaces/nipy/base.py
+++ b/nipype/interfaces/nipy/base.py
@@ -1,6 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-""" Base interface for nipy """
+"""Base interface for nipy"""
 
 from ..base import LibraryBaseInterface
 from ...utils.misc import package_check
diff --git a/nipype/interfaces/nitime/base.py b/nipype/interfaces/nitime/base.py
index 7e434f1d3e..4109bc3a74 100644
--- a/nipype/interfaces/nitime/base.py
+++ b/nipype/interfaces/nitime/base.py
@@ -1,6 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-""" Base interface for nitime """
+"""Base interface for nitime"""
 
 from ..base import LibraryBaseInterface
 
diff --git a/nipype/interfaces/spm/preprocess.py b/nipype/interfaces/spm/preprocess.py
index c7f69785ff..8d931a72ba 100644
--- a/nipype/interfaces/spm/preprocess.py
+++ b/nipype/interfaces/spm/preprocess.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""SPM wrappers for preprocessing data
-"""
+"""SPM wrappers for preprocessing data"""
 import os
 from copy import deepcopy
 
diff --git a/nipype/interfaces/utility/base.py b/nipype/interfaces/utility/base.py
index 564966cb5b..ecc1bf7935 100644
--- a/nipype/interfaces/utility/base.py
+++ b/nipype/interfaces/utility/base.py
@@ -1,9 +1,9 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
 """
-    # changing to temporary directories
-    >>> tmp = getfixture('tmpdir')
-    >>> old = tmp.chdir()
+# changing to temporary directories
+>>> tmp = getfixture('tmpdir')
+>>> old = tmp.chdir()
 """
 import os
 import re
diff --git a/nipype/interfaces/utility/csv.py b/nipype/interfaces/utility/csv.py
index 979e328bb6..7470eecbfe 100644
--- a/nipype/interfaces/utility/csv.py
+++ b/nipype/interfaces/utility/csv.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""CSV Handling utilities
-"""
+"""CSV Handling utilities"""
 import csv
 from ..base import traits, TraitedSpec, DynamicTraitedSpec, File, BaseInterface
 from ..io import add_traits
diff --git a/nipype/pipeline/engine/nodes.py b/nipype/pipeline/engine/nodes.py
index 31ee29e04d..e29b56718b 100644
--- a/nipype/pipeline/engine/nodes.py
+++ b/nipype/pipeline/engine/nodes.py
@@ -452,7 +452,7 @@ def run(self, updatehash=False):
         cached, updated = self.is_cached()
 
         # If the node is cached, check on pklz files and finish
-        if not force_run and (updated or (not updated and updatehash)):
+        if cached and not force_run and (updated or updatehash):
             logger.debug("Only updating node hashes or skipping execution")
             inputs_file = op.join(outdir, "_inputs.pklz")
             if not op.exists(inputs_file):
@@ -820,6 +820,11 @@ def update(self, **opts):
         """Update inputs"""
         self.inputs.update(**opts)
 
+    def is_gpu_node(self):
+        return bool(getattr(self.inputs, 'use_cuda', False)) or bool(
+            getattr(self.inputs, 'use_gpu', False)
+        )
+
 
 class JoinNode(Node):
     """Wraps interface objects that join inputs into a list.
diff --git a/nipype/pipeline/engine/tests/test_engine.py b/nipype/pipeline/engine/tests/test_engine.py
index f1b6817e74..7650be1cd3 100644
--- a/nipype/pipeline/engine/tests/test_engine.py
+++ b/nipype/pipeline/engine/tests/test_engine.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Tests for the engine module
-"""
+"""Tests for the engine module"""
 from copy import deepcopy
 from glob import glob
 import os
diff --git a/nipype/pipeline/engine/tests/test_join.py b/nipype/pipeline/engine/tests/test_join.py
index 2fe5f70564..c177ad24d3 100644
--- a/nipype/pipeline/engine/tests/test_join.py
+++ b/nipype/pipeline/engine/tests/test_join.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Tests for join expansion
-"""
+"""Tests for join expansion"""
 import pytest
 
 from .... import config
diff --git a/nipype/pipeline/engine/tests/test_utils.py b/nipype/pipeline/engine/tests/test_utils.py
index 78483b6923..7ae8ce5b33 100644
--- a/nipype/pipeline/engine/tests/test_utils.py
+++ b/nipype/pipeline/engine/tests/test_utils.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Tests for the engine utils module
-"""
+"""Tests for the engine utils module"""
 import os
 from copy import deepcopy
 import pytest
diff --git a/nipype/pipeline/engine/tests/test_workflows.py b/nipype/pipeline/engine/tests/test_workflows.py
index 12d56de285..980b54fa28 100644
--- a/nipype/pipeline/engine/tests/test_workflows.py
+++ b/nipype/pipeline/engine/tests/test_workflows.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Tests for the engine workflows module
-"""
+"""Tests for the engine workflows module"""
 from glob import glob
 import os
 from shutil import rmtree
diff --git a/nipype/pipeline/plugins/condor.py b/nipype/pipeline/plugins/condor.py
index 0fff477377..789eaecfab 100644
--- a/nipype/pipeline/plugins/condor.py
+++ b/nipype/pipeline/plugins/condor.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via Condor
-"""
+"""Parallel workflow execution via Condor"""
 
 import os
 from time import sleep
diff --git a/nipype/pipeline/plugins/dagman.py b/nipype/pipeline/plugins/dagman.py
index 55f3f03bee..1c424c24ef 100644
--- a/nipype/pipeline/plugins/dagman.py
+++ b/nipype/pipeline/plugins/dagman.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via Condor DAGMan
-"""
+"""Parallel workflow execution via Condor DAGMan"""
 
 import os
 import sys
diff --git a/nipype/pipeline/plugins/debug.py b/nipype/pipeline/plugins/debug.py
index 1dac35cf8f..4798e083bd 100644
--- a/nipype/pipeline/plugins/debug.py
+++ b/nipype/pipeline/plugins/debug.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Debug plugin
-"""
+"""Debug plugin"""
 
 import networkx as nx
 from .base import PluginBase, logger
diff --git a/nipype/pipeline/plugins/ipython.py b/nipype/pipeline/plugins/ipython.py
index f52b3e6282..2c80eb4655 100644
--- a/nipype/pipeline/plugins/ipython.py
+++ b/nipype/pipeline/plugins/ipython.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Parallel workflow execution via IPython controller
-"""
+"""Parallel workflow execution via IPython controller"""
 from pickle import dumps
 
 import sys
diff --git a/nipype/pipeline/plugins/linear.py b/nipype/pipeline/plugins/linear.py
index 93029ee1b9..aa29a5951b 100644
--- a/nipype/pipeline/plugins/linear.py
+++ b/nipype/pipeline/plugins/linear.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Local serial workflow execution
-"""
+"""Local serial workflow execution"""
 
 import os
 from .base import PluginBase, logger, report_crash, report_nodes_not_run, str2bool
diff --git a/nipype/pipeline/plugins/lsf.py b/nipype/pipeline/plugins/lsf.py
index cf334be051..4ca380dfaa 100644
--- a/nipype/pipeline/plugins/lsf.py
+++ b/nipype/pipeline/plugins/lsf.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via LSF
-"""
+"""Parallel workflow execution via LSF"""
 
 import os
 import re
diff --git a/nipype/pipeline/plugins/multiproc.py b/nipype/pipeline/plugins/multiproc.py
index 401b01b388..be0e006229 100644
--- a/nipype/pipeline/plugins/multiproc.py
+++ b/nipype/pipeline/plugins/multiproc.py
@@ -21,6 +21,7 @@
 from ...utils.profiler import get_system_total_memory_gb
 from ..engine import MapNode
 from .base import DistributedPluginBase
+from ...utils.gpu_count import gpu_count
 
 try:
     from textwrap import indent
@@ -100,6 +101,7 @@ class MultiProcPlugin(DistributedPluginBase):
 
     - non_daemon: boolean flag to execute as non-daemon processes
     - n_procs: maximum number of threads to be executed in parallel
+    - n_gpu_procs: maximum number of GPU threads to be executed in parallel
     - memory_gb: maximum memory (in GB) that can be used at once.
     - raise_insufficient: raise error if the requested resources for
         a node over the maximum `n_procs` and/or `memory_gb`
@@ -130,10 +132,24 @@ def __init__(self, plugin_args=None):
         )
         self.raise_insufficient = self.plugin_args.get("raise_insufficient", True)
 
+        # GPU found on system
+        self.n_gpus_visible = gpu_count()
+        # proc per GPU set by user
+        self.n_gpu_procs = self.plugin_args.get('n_gpu_procs', self.n_gpus_visible)
+
+        # total no. of processes allowed on all gpus
+        if self.n_gpu_procs > self.n_gpus_visible:
+            logger.info(
+                'Total number of GPUs proc requested (%d) exceeds the available number of GPUs (%d) on the system. Using requested GPU slots at your own risk!',
+                self.n_gpu_procs,
+                self.n_gpus_visible,
+            )
+
         # Instantiate different thread pools for non-daemon processes
         logger.debug(
-            "[MultiProc] Starting (n_procs=%d, mem_gb=%0.2f, cwd=%s)",
+            "[MultiProc] Starting (n_procs=%d, n_gpu_procs=%d, mem_gb=%0.2f, cwd=%s)",
             self.processors,
+            self.n_gpu_procs,
             self.memory_gb,
             self._cwd,
         )
@@ -184,9 +200,12 @@ def _prerun_check(self, graph):
         """Check if any node exceeds the available resources"""
         tasks_mem_gb = []
         tasks_num_th = []
+        tasks_gpu_th = []
         for node in graph.nodes():
             tasks_mem_gb.append(node.mem_gb)
             tasks_num_th.append(node.n_procs)
+            if node.is_gpu_node():
+                tasks_gpu_th.append(node.n_procs)
 
         if np.any(np.array(tasks_mem_gb) > self.memory_gb):
             logger.warning(
@@ -203,6 +222,10 @@ def _prerun_check(self, graph):
             )
             if self.raise_insufficient:
                 raise RuntimeError("Insufficient resources available for job")
+        if np.any(np.array(tasks_gpu_th) > self.n_gpu_procs):
+            logger.warning('Nodes demand more GPU than allowed (%d).', self.n_gpu_procs)
+            if self.raise_insufficient:
+                raise RuntimeError('Insufficient GPU resources available for job')
 
     def _postrun_check(self):
         self.pool.shutdown()
@@ -213,11 +236,14 @@ def _check_resources(self, running_tasks):
         """
         free_memory_gb = self.memory_gb
         free_processors = self.processors
+        free_gpu_slots = self.n_gpu_procs
         for _, jobid in running_tasks:
             free_memory_gb -= min(self.procs[jobid].mem_gb, free_memory_gb)
             free_processors -= min(self.procs[jobid].n_procs, free_processors)
+            if self.procs[jobid].is_gpu_node():
+                free_gpu_slots -= min(self.procs[jobid].n_procs, free_gpu_slots)
 
-        return free_memory_gb, free_processors
+        return free_memory_gb, free_processors, free_gpu_slots
 
     def _send_procs_to_workers(self, updatehash=False, graph=None):
         """
@@ -232,7 +258,9 @@ def _send_procs_to_workers(self, updatehash=False, graph=None):
         )
 
         # Check available resources by summing all threads and memory used
-        free_memory_gb, free_processors = self._check_resources(self.pending_tasks)
+        free_memory_gb, free_processors, free_gpu_slots = self._check_resources(
+            self.pending_tasks
+        )
 
         stats = (
             len(self.pending_tasks),
@@ -241,6 +269,8 @@ def _send_procs_to_workers(self, updatehash=False, graph=None):
             self.memory_gb,
             free_processors,
             self.processors,
+            free_gpu_slots,
+            self.n_gpu_procs,
         )
         if self._stats != stats:
             tasks_list_msg = ""
@@ -256,13 +286,15 @@ def _send_procs_to_workers(self, updatehash=False, graph=None):
                     tasks_list_msg = indent(tasks_list_msg, " " * 21)
             logger.info(
                 "[MultiProc] Running %d tasks, and %d jobs ready. Free "
-                "memory (GB): %0.2f/%0.2f, Free processors: %d/%d.%s",
+                "memory (GB): %0.2f/%0.2f, Free processors: %d/%d, Free GPU slot:%d/%d.%s",
                 len(self.pending_tasks),
                 len(jobids),
                 free_memory_gb,
                 self.memory_gb,
                 free_processors,
                 self.processors,
+                free_gpu_slots,
+                self.n_gpu_procs,
                 tasks_list_msg,
             )
             self._stats = stats
@@ -304,28 +336,39 @@ def _send_procs_to_workers(self, updatehash=False, graph=None):
             # Check requirements of this job
             next_job_gb = min(self.procs[jobid].mem_gb, self.memory_gb)
             next_job_th = min(self.procs[jobid].n_procs, self.processors)
+            next_job_gpu_th = min(self.procs[jobid].n_procs, self.n_gpu_procs)
+
+            is_gpu_node = self.procs[jobid].is_gpu_node()
 
             # If node does not fit, skip at this moment
-            if next_job_th > free_processors or next_job_gb > free_memory_gb:
+            if (
+                next_job_th > free_processors
+                or next_job_gb > free_memory_gb
+                or (is_gpu_node and next_job_gpu_th > free_gpu_slots)
+            ):
                 logger.debug(
-                    "Cannot allocate job %d (%0.2fGB, %d threads).",
+                    "Cannot allocate job %d (%0.2fGB, %d threads, %d GPU slots).",
                     jobid,
                     next_job_gb,
                     next_job_th,
+                    next_job_gpu_th,
                 )
                 continue
 
             free_memory_gb -= next_job_gb
             free_processors -= next_job_th
+            if is_gpu_node:
+                free_gpu_slots -= next_job_gpu_th
             logger.debug(
                 "Allocating %s ID=%d (%0.2fGB, %d threads). Free: "
-                "%0.2fGB, %d threads.",
+                "%0.2fGB, %d threads, %d GPU slots.",
                 self.procs[jobid].fullname,
                 jobid,
                 next_job_gb,
                 next_job_th,
                 free_memory_gb,
                 free_processors,
+                free_gpu_slots,
             )
 
             # change job status in appropriate queues
@@ -336,8 +379,11 @@ def _send_procs_to_workers(self, updatehash=False, graph=None):
             if self._local_hash_check(jobid, graph):
                 continue
 
+            cached, updated = self.procs[jobid].is_cached()
             # updatehash and run_without_submitting are also run locally
-            if updatehash or self.procs[jobid].run_without_submitting:
+            if (cached and updatehash and not updated) or self.procs[
+                jobid
+            ].run_without_submitting:
                 logger.debug("Running node %s on master thread", self.procs[jobid])
                 try:
                     self.procs[jobid].run(updatehash=updatehash)
@@ -352,6 +398,8 @@ def _send_procs_to_workers(self, updatehash=False, graph=None):
                 self._remove_node_dirs()
                 free_memory_gb += next_job_gb
                 free_processors += next_job_th
+                if is_gpu_node:
+                    free_gpu_slots += next_job_gpu_th
                 # Display stats next loop
                 self._stats = None
 
diff --git a/nipype/pipeline/plugins/oar.py b/nipype/pipeline/plugins/oar.py
index df56391bae..b9c4a050ab 100644
--- a/nipype/pipeline/plugins/oar.py
+++ b/nipype/pipeline/plugins/oar.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via OAR http://oar.imag.fr
-"""
+"""Parallel workflow execution via OAR http://oar.imag.fr"""
 
 import os
 import stat
diff --git a/nipype/pipeline/plugins/pbs.py b/nipype/pipeline/plugins/pbs.py
index d967af0bed..01c80efc5a 100644
--- a/nipype/pipeline/plugins/pbs.py
+++ b/nipype/pipeline/plugins/pbs.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via PBS/Torque
-"""
+"""Parallel workflow execution via PBS/Torque"""
 
 import os
 from time import sleep
diff --git a/nipype/pipeline/plugins/pbsgraph.py b/nipype/pipeline/plugins/pbsgraph.py
index 4b245dedb7..0cb925af38 100644
--- a/nipype/pipeline/plugins/pbsgraph.py
+++ b/nipype/pipeline/plugins/pbsgraph.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via PBS/Torque
-"""
+"""Parallel workflow execution via PBS/Torque"""
 
 import os
 import sys
diff --git a/nipype/pipeline/plugins/sge.py b/nipype/pipeline/plugins/sge.py
index 38079e947d..ce8e046f01 100644
--- a/nipype/pipeline/plugins/sge.py
+++ b/nipype/pipeline/plugins/sge.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via SGE
-"""
+"""Parallel workflow execution via SGE"""
 
 import os
 import pwd
diff --git a/nipype/pipeline/plugins/sgegraph.py b/nipype/pipeline/plugins/sgegraph.py
index 5cd1c7bfb7..3b33b73dee 100644
--- a/nipype/pipeline/plugins/sgegraph.py
+++ b/nipype/pipeline/plugins/sgegraph.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via SGE
-"""
+"""Parallel workflow execution via SGE"""
 
 import os
 import sys
diff --git a/nipype/pipeline/plugins/slurmgraph.py b/nipype/pipeline/plugins/slurmgraph.py
index c74ab05a87..05824b016b 100644
--- a/nipype/pipeline/plugins/slurmgraph.py
+++ b/nipype/pipeline/plugins/slurmgraph.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via SLURM
-"""
+"""Parallel workflow execution via SLURM"""
 
 import os
 import sys
diff --git a/nipype/pipeline/plugins/somaflow.py b/nipype/pipeline/plugins/somaflow.py
index 2105204979..16bedaab23 100644
--- a/nipype/pipeline/plugins/somaflow.py
+++ b/nipype/pipeline/plugins/somaflow.py
@@ -1,5 +1,4 @@
-"""Parallel workflow execution via PBS/Torque
-"""
+"""Parallel workflow execution via PBS/Torque"""
 
 import os
 import sys
diff --git a/nipype/pipeline/plugins/tests/test_base.py b/nipype/pipeline/plugins/tests/test_base.py
index 43471a7d64..11acb369e9 100644
--- a/nipype/pipeline/plugins/tests/test_base.py
+++ b/nipype/pipeline/plugins/tests/test_base.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Tests for the engine module
-"""
+"""Tests for the engine module"""
 import numpy as np
 import scipy.sparse as ssp
 
diff --git a/nipype/pipeline/plugins/tests/test_legacymultiproc_nondaemon.py b/nipype/pipeline/plugins/tests/test_legacymultiproc_nondaemon.py
index 2f35579a40..cd79fbe31c 100644
--- a/nipype/pipeline/plugins/tests/test_legacymultiproc_nondaemon.py
+++ b/nipype/pipeline/plugins/tests/test_legacymultiproc_nondaemon.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Testing module for functions and classes from multiproc.py
-"""
+"""Testing module for functions and classes from multiproc.py"""
 # Import packages
 import os
 import sys
diff --git a/nipype/pipeline/plugins/tests/test_multiproc.py b/nipype/pipeline/plugins/tests/test_multiproc.py
index 938e1aab9e..484c0d07bc 100644
--- a/nipype/pipeline/plugins/tests/test_multiproc.py
+++ b/nipype/pipeline/plugins/tests/test_multiproc.py
@@ -56,6 +56,7 @@ def test_run_multiproc(tmpdir):
 class InputSpecSingleNode(nib.TraitedSpec):
     input1 = nib.traits.Int(desc="a random int")
     input2 = nib.traits.Int(desc="a random int")
+    use_gpu = nib.traits.Bool(False, mandatory=False, desc="boolean for GPU nodes")
 
 
 class OutputSpecSingleNode(nib.TraitedSpec):
@@ -117,6 +118,24 @@ def test_no_more_threads_than_specified(tmpdir):
         pipe.run(plugin="MultiProc", plugin_args={"n_procs": max_threads})
 
 
+def test_no_more_gpu_threads_than_specified(tmpdir):
+    tmpdir.chdir()
+
+    pipe = pe.Workflow(name="pipe")
+    n1 = pe.Node(SingleNodeTestInterface(), name="n1", n_procs=2)
+    n1.inputs.use_gpu = True
+    n1.inputs.input1 = 4
+    pipe.add_nodes([n1])
+
+    max_threads = 2
+    max_gpu = 1
+    with pytest.raises(RuntimeError):
+        pipe.run(
+            plugin="MultiProc",
+            plugin_args={"n_procs": max_threads, 'n_gpu_procs': max_gpu},
+        )
+
+
 @pytest.mark.skipif(
     sys.version_info >= (3, 8), reason="multiprocessing issues in Python 3.8"
 )
diff --git a/nipype/pipeline/plugins/tests/test_tools.py b/nipype/pipeline/plugins/tests/test_tools.py
index e21ef42072..e352253dbe 100644
--- a/nipype/pipeline/plugins/tests/test_tools.py
+++ b/nipype/pipeline/plugins/tests/test_tools.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Tests for the engine module
-"""
+"""Tests for the engine module"""
 import re
 
 from unittest import mock
diff --git a/nipype/pipeline/plugins/tools.py b/nipype/pipeline/plugins/tools.py
index bce3eb82da..7e066b0ea3 100644
--- a/nipype/pipeline/plugins/tools.py
+++ b/nipype/pipeline/plugins/tools.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Common graph operations for execution
-"""
+"""Common graph operations for execution"""
 import os
 import getpass
 from socket import gethostname
diff --git a/nipype/sphinxext/apidoc/__init__.py b/nipype/sphinxext/apidoc/__init__.py
index 151011bdfc..429848d2f5 100644
--- a/nipype/sphinxext/apidoc/__init__.py
+++ b/nipype/sphinxext/apidoc/__init__.py
@@ -2,6 +2,9 @@
 # vi: set ft=python sts=4 ts=4 sw=4 et:
 """Settings for sphinxext.interfaces and connection to sphinx-apidoc."""
 import re
+from packaging.version import Version
+
+import sphinx
 from sphinx.ext.napoleon import (
     Config as NapoleonConfig,
     _patch_python_domain,
@@ -39,13 +42,24 @@ class Config(NapoleonConfig):
 
     """
 
-    _config_values = {
-        "nipype_skip_classes": (
-            ["Tester", "InputSpec", "OutputSpec", "Numpy", "NipypeTester"],
-            "env",
-        ),
-        **NapoleonConfig._config_values,
-    }
+    if Version(sphinx.__version__) >= Version("8.2.1"):
+        _config_values = (
+            (
+                "nipype_skip_classes",
+                ["Tester", "InputSpec", "OutputSpec", "Numpy", "NipypeTester"],
+                "env",
+                frozenset({list[str]}),
+            ),
+            *NapoleonConfig._config_values,
+        )
+    else:
+        _config_values = {
+            "nipype_skip_classes": (
+                ["Tester", "InputSpec", "OutputSpec", "Numpy", "NipypeTester"],
+                "env",
+            ),
+            **NapoleonConfig._config_values,
+        }
 
 
 def setup(app):
@@ -82,8 +96,12 @@ def setup(app):
     app.connect("autodoc-process-docstring", _process_docstring)
     app.connect("autodoc-skip-member", _skip_member)
 
-    for name, (default, rebuild) in Config._config_values.items():
-        app.add_config_value(name, default, rebuild)
+    if Version(sphinx.__version__) >= Version("8.2.1"):
+        for name, default, rebuild, types in Config._config_values:
+            app.add_config_value(name, default, rebuild, types=types)
+    else:
+        for name, (default, rebuild) in Config._config_values.items():
+            app.add_config_value(name, default, rebuild)
     return {"version": __version__, "parallel_read_safe": True}
 
 
diff --git a/nipype/testing/tests/test_utils.py b/nipype/testing/tests/test_utils.py
index 9217d54694..c3b1cae638 100644
--- a/nipype/testing/tests/test_utils.py
+++ b/nipype/testing/tests/test_utils.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Test testing utilities
-"""
+"""Test testing utilities"""
 
 import os
 import subprocess
diff --git a/nipype/testing/utils.py b/nipype/testing/utils.py
index 71a75a41c7..96a94d6564 100644
--- a/nipype/testing/utils.py
+++ b/nipype/testing/utils.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Additional handy utilities for testing
-"""
+"""Additional handy utilities for testing"""
 import os
 import time
 import shutil
diff --git a/nipype/utils/filemanip.py b/nipype/utils/filemanip.py
index 52558f59f0..4916cbacef 100644
--- a/nipype/utils/filemanip.py
+++ b/nipype/utils/filemanip.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Miscellaneous file manipulation functions
-"""
+"""Miscellaneous file manipulation functions"""
 import sys
 import pickle
 import errno
diff --git a/nipype/utils/gpu_count.py b/nipype/utils/gpu_count.py
new file mode 100644
index 0000000000..70eb6d724e
--- /dev/null
+++ b/nipype/utils/gpu_count.py
@@ -0,0 +1,46 @@
+# -*- DISCLAIMER: this file contains code derived from gputil (https://github.com/anderskm/gputil)
+# and therefore is distributed under to the following license:
+#
+# MIT License
+#
+# Copyright (c) 2017 anderskm
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import platform
+import shutil
+import subprocess
+import os
+
+
+def gpu_count():
+    nvidia_smi = shutil.which('nvidia-smi')
+    if nvidia_smi is None and platform.system() == "Windows":
+        nvidia_smi = f'{os.environ["systemdrive"]}\\Program Files\\NVIDIA Corporation\\NVSMI\\nvidia-smi.exe'
+    if nvidia_smi is None:
+        return 0
+    try:
+        p = subprocess.run(
+            [nvidia_smi, "--query-gpu=name", "--format=csv,noheader,nounits"],
+            stdout=subprocess.PIPE,
+            text=True,
+        )
+    except (OSError, UnicodeDecodeError):
+        return 0
+    return len(p.stdout.splitlines())
diff --git a/nipype/utils/matlabtools.py b/nipype/utils/matlabtools.py
index ea06cd4126..d871885c06 100644
--- a/nipype/utils/matlabtools.py
+++ b/nipype/utils/matlabtools.py
@@ -1,6 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-""" Useful Functions for working with matlab"""
+"""Useful Functions for working with matlab"""
 
 # Stdlib imports
 import os
diff --git a/nipype/utils/misc.py b/nipype/utils/misc.py
index ed8a539e66..3f76fbab3c 100644
--- a/nipype/utils/misc.py
+++ b/nipype/utils/misc.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Miscellaneous utility functions
-"""
+"""Miscellaneous utility functions"""
 import os
 import sys
 import re
diff --git a/nipype/utils/subprocess.py b/nipype/utils/subprocess.py
index acd6b63256..2fa9e52c3b 100644
--- a/nipype/utils/subprocess.py
+++ b/nipype/utils/subprocess.py
@@ -1,7 +1,6 @@
 # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
 # vi: set ft=python sts=4 ts=4 sw=4 et:
-"""Miscellaneous utility functions
-"""
+"""Miscellaneous utility functions"""
 import os
 import sys
 import gc
diff --git a/tox.ini b/tox.ini
index 9704158bec..571b93628b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -68,8 +68,6 @@ pass_env =
   CLICOLOR
   CLICOLOR_FORCE
   PYTHON_GIL
-deps =
-  py313: traits @ git+https://github.com/enthought/traits.git@10954eb
 extras =
   tests
   full: doc