Source code for hysop.tools.hptt_utils

# Copyright (c) HySoP 2011-2024
#
# This file is part of HySoP software.
# See "https://particle_methods.gricad-pages.univ-grenoble-alpes.fr/hysop-doc/"
# for further info.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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import numpy as np

try:
    import hptt

    HAS_HPTT = True
    # required version is: https://gitlab.com/keckj/hptt
except ImportError:
    hptt = None
    HAS_HPTT = False
    import warnings
    from hysop.tools.warning import HysopPerformanceWarning

    msg = "Failed to import HPTT module, falling back to slow numpy transpose. Required version is available at https://gitlab.com/keckj/hptt."
    warnings.warn(msg, HysopPerformanceWarning)


[docs] def array_share_data(a, b): abeg, aend = np.byte_bounds(a) bbeg, bend = np.byte_bounds(b) beg, end = max(abeg, bbeg), min(aend, bend) return end - beg > 0
if HAS_HPTT: def can_exec_hptt(src, dst): if src is dst: return False if src.dtype != dst.dtype: return False if src.dtype not in (np.float32, np.float64, np.complex64, np.complex128): return False if src.flags.c_contiguous != dst.flags.c_contiguous: return False if src.flags.f_contiguous != dst.flags.f_contiguous: return False if not (src.flags.c_contiguous ^ src.flags.f_contiguous): return False return not array_share_data(src, dst) else:
[docs] def can_exec_hptt(src, dst): return False