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Add a basic sampling test #1235

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Add a basic sampling test #1235

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51d73bf
Add a basic sampling test
liurupeng Feb 4, 2025
83719ba
fix linter
liurupeng Feb 4, 2025
b71d41b
fix
liurupeng Feb 4, 2025
a70946d
Split tests
liurupeng Feb 4, 2025
354e0e3
Merge branch 'main' into rupliu/unittest2
liurupeng Feb 4, 2025
30c6888
Merge branch 'main' into rupliu/unittest2
liurupeng Feb 4, 2025
8d3526f
Merge branch 'main' into rupliu/unittest2
liurupeng Feb 5, 2025
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17 changes: 17 additions & 0 deletions MaxText/tests/maxengine_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
import unittest
import pyconfig
import max_utils
import inference_utils
from maxengine import MaxEngine
from layers import quantizations
from layers import models
Expand Down Expand Up @@ -121,6 +122,22 @@ def test_basic_prefill(self):
self.assertNotEqual(prefill_result["tokens"], jnp.array([0]))
self.assertTrue(jnp.array_equal(first_token.data.size, 3))

def test_sampling(self):
selected_logits = jnp.array([[[-3.46875, -4.90625, 4.125, 4.0625, -2.6875, 1.1953125, 8.2, 0.345, 0.0]]])
rng = jax.random.PRNGKey(0)
# all results should be the same in this configuration, this is only for functionality test
greedy_logit = inference_utils.sampling(selected_logits, rng, "greedy")
self.assertEqual(selected_logits[0, 0, greedy_logit[0, 0]], 8.2)

weighted_logits = inference_utils.sampling(selected_logits, rng, "weighted", temperature=2)
self.assertEqual(selected_logits[0, 0, weighted_logits[0, 0]], 8.2)

nucleus_logits = inference_utils.sampling(selected_logits, rng, "nucleus", nucleus_topp=3)
self.assertEqual(selected_logits[0, 0, nucleus_logits[0, 0]], 8.2)

topk_logits = inference_utils.sampling(selected_logits, rng, "topk", topk=3)
self.assertEqual(selected_logits[0, 0, topk_logits[0, 0]], 8.2)


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