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Add (non-)reproducer for einsum tag cycle #584

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Add (non-)reproducer for einsum tag cycle #584

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28 changes: 28 additions & 0 deletions test/test_pytato.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1844,6 +1844,34 @@ def test_pickling_hash():
# }}}


def test_einsum_tagging():
from pytools.tag import UniqueTag

class FTag(UniqueTag):
pass

class ATag(UniqueTag):
pass

class CTag(UniqueTag):
pass

class DTag(UniqueTag):
pass

p = (pt.zeros((2, 3, 4, 5))
.with_tagged_axis(0, FTag())
.with_tagged_axis(1, ATag())
.with_tagged_axis(2, CTag())
.with_tagged_axis(3, DTag()))

a = pt.zeros((2, 3, 3))

result = pt.einsum("facb, fdce, fad -> cbe", p, p, a)

pt.unify_axes_tags(result)


if __name__ == "__main__":
import os
if "INVOCATION_INFO" in os.environ:
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