flash-attention/csrc/cutlass/test/python/pycute/test_coalesce.py

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"""
Unit tests for pycute.coalesce
"""

import logging
import unittest

from pycute import *

_LOGGER = logging.getLogger(__name__)


class TestCoalesce(unittest.TestCase):
  def helper_test_coalesce(self, layout):
    layoutR = coalesce(layout)

    _LOGGER.debug(f"{layout}  =>  {layoutR}")

    self.assertEqual(size(layoutR), size(layout))

    for i in range(size(layout)):
      self.assertEqual(layoutR(i), layout(i))

  def test_coalesce(self):
    layout = Layout(1,0)
    self.helper_test_coalesce(layout)

    layout = Layout(1,1)
    self.helper_test_coalesce(layout)

    layout = Layout((2,4))
    self.helper_test_coalesce(layout)

    layout = Layout((2,4,6))
    self.helper_test_coalesce(layout)

    layout = Layout((2,4,6), (1,6,2))
    self.helper_test_coalesce(layout)

    layout = Layout((2,1,6), (1,7,2))
    self.helper_test_coalesce(layout)

    layout = Layout((2,1,6), (4,7,8))
    self.helper_test_coalesce(layout)

    layout = Layout((2,(4,6)))
    self.helper_test_coalesce(layout)

    layout = Layout((2,4), (4,1))
    self.helper_test_coalesce(layout)

    layout = Layout((2,4,6), (24,6,1))
    self.helper_test_coalesce(layout)

    layout = Layout((2,1,3), (2,4,4))
    self.helper_test_coalesce(layout)

    layout = Layout(((2,2),(2,2)), ((1,4),(8,32)))
    self.helper_test_coalesce(layout)


if __name__ == "__main__":
  unittest.main()