Compat option for jax devices

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Install python dependecies
         run: |
           python -m pip install --upgrade pip
-          pip install ase dill "dm-haiku<0.0.11" "e3nn-jax!=0.20.4" "jax<=0.4.15" "jaxlib<=0.4.15" "jax-md>=0.2.7" jaxopt pytest matplotlib
+          pip install ase dill "dm-haiku<0.0.11" "e3nn-jax!=0.20.4" "jax<=0.4.15" "jaxlib<=0.4.15" "jax-md>=0.2.7" jaxopt pytest matplotlib "scipy<1.13"
 
       - name: Install pysages
         run: pip install .

docs/requirements.txt

@@ -1,6 +1,7 @@
 furo
 jaxlib
 myst-parser
+scipy<1.13
 setuptools-scm
 sphinx
 sphinx-copybutton

pysages/methods/core.py

@@ -16,7 +16,15 @@
 from pysages.methods.restraints import canonicalize
 from pysages.methods.utils import ReplicasConfiguration
 from pysages.typing import Callable, Optional, Union
-from pysages.utils import ToCPU, copy, dispatch, dispatch_table, has_method, identity
+from pysages.utils import (
+    ToCPU,
+    copy,
+    device_platform,
+    dispatch,
+    dispatch_table,
+    has_method,
+    identity,
+)
 
 #  Base Classes
 #  ============
@@ -392,7 +400,7 @@ def _run(  # noqa: F811 # pylint: disable=C0116,E0102
     context_args["context"] = sampling_context.context
     sampler = sampling_context.sampler
     prev_snapshot = result.snapshots
-    if sampler.state.xi.device().platform == "cpu":
+    if device_platform(sampler.state.xi) == "cpu":
         prev_snapshot = copy(prev_snapshot, ToCPU())
     sampler.restore(prev_snapshot)
     sampler.state = result.states

pysages/utils/__init__.py

@@ -10,6 +10,7 @@
 
 from .compat import (
     check_device_array,
+    device_platform,
     dispatch_table,
     has_method,
     is_generic_subclass,

pysages/utils/compat.py

@@ -36,6 +36,21 @@ def prod(iterable, start=1):
         return result
 
 
+# Compatibility for jax >=0.4.27
+
+# https://github.com/google/jax/blob/main/CHANGELOG.md#jax-0427-may-7-2024
+
+if _jax_version_tuple < (0, 4, 27):
+
+    def device_platform(array):
+        return array.device().platform
+
+else:
+
+    def device_platform(array):
+        return next(iter(array.devices())).platform
+
+
 # Compatibility for jax >=0.4.1
 
 # https://github.com/google/jax/releases/tag/jax-v0.4.1