[Pallas] Add non-square pl.dot test cases.

PiperOrigin-RevId: 704440071

tests/pallas/ops_test.py

@@ -17,6 +17,7 @@
 from collections.abc import Sequence
 import functools
 import itertools
+import math
 import sys
 from typing import Any
 import unittest
@@ -1410,12 +1411,39 @@ def f(x_ref, o_ref):
     np.testing.assert_allclose(f(x), expected)
 
   @parameterized.product(
-      size=[16, 32, 64, 128, 256],
+      lhs_and_rhs_shape=[
+          ((16, 16), (16, 16)),
+          ((32, 32), (32, 32)),
+          ((64, 64), (64, 64)),
+          ((128, 128), (128, 128)),
+          ((256, 256), (256, 256)),
+          ((8, 128), (128, 256)),
+          ((8, 128), (256, 128)),
+          ((8, 256), (256, 128)),
+          ((16, 128), (128, 256)),
+          ((16, 128), (256, 128)),
+          ((16, 256), (256, 128)),
+          ((128, 8), (128, 256)),
+          ((128, 8), (256, 128)),
+          ((256, 8), (256, 128)),
+          ((128, 16), (128, 256)),
+          ((128, 16), (256, 128)),
+          ((256, 16), (256, 128)),
+      ],
       dtype=[jnp.float32, jnp.float16, jnp.bfloat16],
       trans_x=[False, True],
       trans_y=[False, True],
   )
-  def test_dot(self, size, dtype, trans_x, trans_y):
+  def test_dot(self, lhs_and_rhs_shape, dtype, trans_x, trans_y):
+    lhs_shape, rhs_shape = lhs_and_rhs_shape
+
+    final_lhs_shape = lhs_shape[::-1] if trans_x else lhs_shape
+    final_rhs_shape = rhs_shape[::-1] if trans_y else rhs_shape
+    if final_lhs_shape[1] != final_rhs_shape[0]:
+      self.skipTest("Contraction dimensions do not match")
+
+    out_shape = (final_lhs_shape[0], final_rhs_shape[1])
+
     if jtu.test_device_matches(["tpu"]):
       if dtype == jnp.float16:
         self.skipTest("float16 type is not supported on TPU")
@@ -1427,12 +1455,17 @@ def test_dot(self, size, dtype, trans_x, trans_y):
     if jtu.test_device_matches(["gpu"]):
       if dtype == jnp.bfloat16:
         self.skipTest("bfloat16 type are not supported on GPU")
-      if size > 128:
+      if (
+          math.prod(lhs_shape) + math.prod(rhs_shape) + math.prod(out_shape)
+          > (256 * 256) * 2
+      ):
         self.skipTest("Shared memory size limit exceeded")
+      if any(x < 16 for x in lhs_shape) or any(x < 16 for x in rhs_shape):
+        self.skipTest("All dimensions of lhs and rhs must be >= 16")
 
     @functools.partial(
         self.pallas_call,
-        out_shape=jax.ShapeDtypeStruct((size, size), dtype),
+        out_shape=jax.ShapeDtypeStruct(out_shape, dtype),
         grid=1,
     )
     def dot(x_ref, y_ref, o_ref):
@@ -1441,8 +1474,8 @@ def dot(x_ref, y_ref, o_ref):
       o_ref[:, :] = pl.dot(x, y, trans_x, trans_y).astype(o_ref.dtype)
 
     k1, k2 = random.split(random.key(0))
-    x = random.normal(k1, (size, size), dtype=dtype)
-    y = random.normal(k2, (size, size), dtype=dtype)
+    x = random.normal(k1, lhs_shape, dtype=dtype)
+    y = random.normal(k2, rhs_shape, dtype=dtype)
     out = dot(x, y)
     expected = jnp.dot(x.T if trans_x else x, y.T if trans_y else y)
     np.testing.assert_allclose(