reqs: Update cached_property to functools version

.github/workflows/pytest-core-nompi.yml

@@ -32,7 +32,7 @@ jobs:
         name: [
            pytest-ubuntu-py311-gcc11-noomp,
            pytest-ubuntu-py38-gcc12-omp,
-           pytest-ubuntu-py37-gcc7-omp,
+           pytest-ubuntu-py38-gcc7-omp,
            pytest-ubuntu-py310-gcc10-noomp,
            pytest-ubuntu-py312-gcc13-omp,
            pytest-ubuntu-py39-gcc9-omp,
@@ -56,8 +56,8 @@ jobs:
           language: "openmp"
           sympy: "1.10"
 
-        - name: pytest-ubuntu-py37-gcc7-omp
-          python-version: '3.7'
+        - name: pytest-ubuntu-py38-gcc7-omp
+          python-version: '3.8'
           os: ubuntu-20.04
           arch: "gcc-7"
           language: "openmp"

devito/arch/archinfo.py

@@ -2,7 +2,7 @@
 
 from subprocess import PIPE, Popen, DEVNULL, run
 
-from cached_property import cached_property
+from functools import cached_property
 import cpuinfo
 import ctypes
 import numpy as np

devito/data/decomposition.py

@@ -1,7 +1,7 @@
 from collections.abc import Iterable
+from functools import cached_property
 
 import numpy as np
-from cached_property import cached_property
 
 from devito.data.meta import LEFT
 from devito.tools import is_integer, as_tuple

devito/finite_differences/coefficients.py

@@ -1,5 +1,6 @@
+from functools import cached_property
+
 import numpy as np
-from cached_property import cached_property
 
 from devito.finite_differences import Weights, generate_indices
 from devito.finite_differences.tools import numeric_weights

devito/finite_differences/derivative.py

@@ -1,7 +1,7 @@
 from collections import OrderedDict
 from collections.abc import Iterable
+from functools import cached_property
 
-from cached_property import cached_property
 import sympy
 
 from .finite_difference import generic_derivative, first_derivative, cross_derivative

devito/finite_differences/differentiable.py

@@ -1,8 +1,7 @@
 from collections import ChainMap
 from itertools import product
-from functools import singledispatch
+from functools import singledispatch, cached_property
 
-from cached_property import cached_property
 import numpy as np
 import sympy
 from sympy.core.add import _addsort

devito/ir/clusters/cluster.py

@@ -1,7 +1,7 @@
 from itertools import chain
+from functools import cached_property
 
 import numpy as np
-from cached_property import cached_property
 
 from devito.ir.equations import ClusterizedEq
 from devito.ir.support import (PARALLEL, PARALLEL_IF_PVT, BaseGuardBoundNext,

devito/ir/equations/equation.py

@@ -1,4 +1,5 @@
-from cached_property import cached_property
+from functools import cached_property
+
 import sympy
 
 from devito.ir.equations.algorithms import dimension_sort, lower_exprs

devito/ir/iet/efunc.py

@@ -1,4 +1,4 @@
-from cached_property import cached_property
+from functools import cached_property
 
 from devito.ir.iet.nodes import Call, Callable
 from devito.ir.iet.utils import derive_parameters

devito/ir/iet/nodes.py

@@ -2,7 +2,7 @@
 
 import abc
 import inspect
-from cached_property import cached_property
+from functools import cached_property
 from collections import OrderedDict, namedtuple
 from collections.abc import Iterable
 

devito/ir/support/basic.py

@@ -1,6 +1,6 @@
 from itertools import chain, product
+from functools import cached_property
 
-from cached_property import cached_property
 from sympy import S
 
 from devito.ir.support.space import Backward, null_ispace

devito/ir/support/space.py

@@ -1,9 +1,8 @@
 import abc
 from collections import OrderedDict
-from functools import reduce
+from functools import reduce, cached_property
 from operator import mul
 
-from cached_property import cached_property
 from sympy import Expr
 
 from devito.ir.support.utils import minimum, maximum

devito/mpi/distributed.py

@@ -1,12 +1,13 @@
 from abc import ABC, abstractmethod
 from ctypes import c_int, c_void_p, sizeof
 from itertools import groupby, product
+from functools import cached_property
+
 from math import ceil, pow
 from sympy import factorint
 
 import atexit
 
-from cached_property import cached_property
 import numpy as np
 from cgen import Struct, Value
 

devito/mpi/halo_scheme.py

@@ -1,8 +1,8 @@
 from collections import OrderedDict, namedtuple, defaultdict
 from itertools import product
 from operator import attrgetter
+from functools import cached_property
 
-from cached_property import cached_property
 from sympy import Max, Min
 import sympy
 

devito/operations/interpolators.py

@@ -1,9 +1,8 @@
 from abc import ABC, abstractmethod
-from functools import wraps
+from functools import wraps, cached_property
 
 import sympy
 import numpy as np
-from cached_property import cached_property
 
 try:
     from scipy.special import i0

devito/operator/operator.py

@@ -1,9 +1,9 @@
 from collections import OrderedDict, namedtuple
+from functools import cached_property
 import ctypes
 from operator import attrgetter
 from math import ceil
 
-from cached_property import cached_property
 from sympy import sympify
 
 from devito.arch import compiler_registry, platform_registry

devito/passes/clusters/aliases.py

@@ -1,8 +1,7 @@
 from collections import Counter, OrderedDict, defaultdict, namedtuple
-from functools import singledispatch
+from functools import singledispatch, cached_property
 from itertools import groupby
 
-from cached_property import cached_property
 import numpy as np
 import sympy
 

devito/passes/clusters/buffering.py

@@ -1,7 +1,7 @@
 from collections import OrderedDict, defaultdict, namedtuple
 from itertools import combinations
+from functools import cached_property
 
-from cached_property import cached_property
 import numpy as np
 
 from devito.ir import (Cluster, Forward, GuardBound, Interval, IntervalGroup,

devito/passes/iet/parpragma.py

@@ -1,8 +1,8 @@
 from collections import defaultdict
+from functools import cached_property
 
 import numpy as np
 import cgen as c
-from cached_property import cached_property
 from sympy import And, Max, true
 
 from devito.data import FULL

devito/tools/utils.py

@@ -3,7 +3,6 @@
 from functools import reduce
 from itertools import chain, combinations, groupby, product, zip_longest
 from operator import attrgetter, mul
-import sys
 import types
 
 import numpy as np
@@ -16,11 +15,6 @@
            'humanbytes', 'contains_val', 'sorted_priority']
 
 
-# Some utils run faster with Python>=3.7
-vi = sys.version_info
-py_ge_37 = (vi.major, vi.minor) >= (3, 7)
-
-
 def prod(iterable, initial=1):
     return reduce(mul, iterable, initial)
 
@@ -163,49 +157,33 @@ def single_or(l):
     return any(i) and not any(i)
 
 
-if py_ge_37:
-    def filter_ordered(elements, key=None):
-        # This method exploits the fact that dictionary keys are unique and ordered
-        # (since Python 3.7). It's concise and often faster for larger lists
+def filter_ordered(elements, key=None):
+    """
+    Filter elements in a list while preserving order.
 
-        if isinstance(elements, types.GeneratorType):
-            elements = list(elements)
+    Parameters
+    ----------
+    key : callable, optional
+        Conversion key used during equality comparison.
+    """
+    if isinstance(elements, types.GeneratorType):
+        elements = list(elements)
 
-        if key is None:
-            return list(dict.fromkeys(elements))
-        else:
-            return list(dict(zip([key(i) for i in elements], elements)).values())
-
-else:
-    def filter_ordered(elements, key=None):
-        if isinstance(elements, types.GeneratorType):
-            elements = list(elements)
-
-        seen = set()
-        if key is None:
-            try:
-                unordered, inds = np.unique(elements, return_index=True)
-                return unordered[np.argsort(inds)].tolist()
-            except:
-                return sorted(list(set(elements)), key=elements.index)
-        else:
-            ret = []
-            for e in elements:
-                k = key(e)
-                if k not in seen:
-                    ret.append(e)
-                    seen.add(k)
-            return ret
-
-
-filter_ordered.__doc__ = """\
-Filter elements in a list while preserving order.
-
-Parameters
-----------
-key : callable, optional
-    Conversion key used during equality comparison.
-"""
+    seen = set()
+    if key is None:
+        try:
+            unordered, inds = np.unique(elements, return_index=True)
+            return unordered[np.argsort(inds)].tolist()
+        except:
+            return sorted(list(set(elements)), key=elements.index)
+    else:
+        ret = []
+        for e in elements:
+            k = key(e)
+            if k not in seen:
+                ret.append(e)
+                seen.add(k)
+        return ret
 
 
 def filter_sorted(elements, key=None):

devito/types/array.py

@@ -1,7 +1,7 @@
 from ctypes import POINTER, Structure, c_void_p, c_ulong
+from functools import cached_property
 
 import numpy as np
-from cached_property import cached_property
 from sympy import Expr
 
 from devito.tools import (Reconstructable, as_tuple, c_restrict_void_p,

devito/types/basic.py

@@ -1,15 +1,14 @@
 import abc
 from collections import namedtuple
 from ctypes import POINTER, _Pointer, c_char_p, c_char
-from functools import reduce
+from functools import reduce, cached_property
 from operator import mul
 
 import numpy as np
 import sympy
 
 from sympy.core.assumptions import _assume_rules
 from sympy.core.decorators import call_highest_priority
-from cached_property import cached_property
 
 from devito.data import default_allocator
 from devito.parameters import configuration

devito/types/dense.py

@@ -6,7 +6,7 @@
 import numpy as np
 import sympy
 from psutil import virtual_memory
-from cached_property import cached_property
+from functools import cached_property
 
 from devito.builtins import assign
 from devito.data import (DOMAIN, OWNED, HALO, NOPAD, FULL, LEFT, CENTER, RIGHT,
@@ -30,6 +30,7 @@
 
 
 RegionMeta = namedtuple('RegionMeta', 'offset size')
+Offset = namedtuple('Offset', 'left right')
 
 
 class DiscreteFunction(AbstractFunction, ArgProvider, Differentiable):
@@ -203,6 +204,10 @@ def coefficients(self):
         """Form of the coefficients of the function."""
         return self._coefficients
 
+    @property
+    def _shape_with_outhalo(self):
+        return self.shape_with_halo
+
     @cached_property
     def shape(self):
         """
@@ -243,8 +248,6 @@ def shape_with_halo(self):
         """
         return tuple(j + i + k for i, (j, k) in zip(self.shape, self._size_outhalo))
 
-    _shape_with_outhalo = shape_with_halo
-
     @cached_property
     def _shape_with_inhalo(self):
         """
@@ -310,8 +313,13 @@ def size_global(self):
         """
         return reduce(mul, self.shape_global)
 
-    _offset_inhalo = AbstractFunction._offset_halo
-    _size_inhalo = AbstractFunction._size_halo
+    @property
+    def _offset_inhalo(self):
+        return super()._offset_halo
+
+    @property
+    def _size_inhalo(self):
+        return super()._size_halo
 
     @cached_property
     def _size_outhalo(self):

devito/types/dimension.py

@@ -1,10 +1,10 @@
 from collections import namedtuple
+from functools import cached_property
 import math
 
 import sympy
 from sympy.core.decorators import call_highest_priority
 import numpy as np
-from cached_property import cached_property
 
 from devito.data import LEFT, RIGHT
 from devito.exceptions import InvalidArgument

devito/types/equation.py

@@ -2,7 +2,7 @@
 
 import sympy
 
-from cached_property import cached_property
+from functools import cached_property
 
 from devito.finite_differences import default_rules
 from devito.tools import as_tuple

devito/types/grid.py

@@ -1,10 +1,10 @@
 from abc import ABC
 from collections import namedtuple
+from functools import cached_property
 from math import floor
 
 import numpy as np
 from sympy import prod
-from cached_property import cached_property
 
 from devito.data import LEFT, RIGHT
 from devito.logger import warning