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[Executorch][llm] Fix flakyness of quantized sdpa test #15766

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[Executorch][llm] Fix flakyness of quantized sdpa test #15766

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1 change: 1 addition & 0 deletions extension/llm/custom_ops/TARGETS
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Original file line number Diff line number Diff line change
Expand Up @@ -60,5 +60,6 @@ runtime.python_test(
],
deps = [
"//caffe2:torch",
"//executorch/extension/pybindings:portable_lib",
],
)
6 changes: 6 additions & 0 deletions extension/llm/custom_ops/test_quantized_sdpa.py
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Expand Up @@ -12,6 +12,7 @@
import torch.nn.functional as F

from executorch.extension.llm.custom_ops import custom_ops # noqa
from executorch.extension.pybindings.portable_lib import _unsafe_reset_threadpool


def is_fbcode():
Expand Down Expand Up @@ -40,6 +41,11 @@ def setUp(self):
self.q_shape = None
self.kv_shape = None
self.is_seq_at_dim_2 = True
# For some reason 4 threads doesnt work
# This setting is needed to make this test not flaky due to OMP
# error of "OMP: Error #131: Thread identifier invalid"
# Not clear why that happens but having smaller threadpool resolves it
_unsafe_reset_threadpool(3)

def _scale_tensor(self, tensor, min_value, max_value, scale=True):
normalized_tensor = (tensor - tensor.min()) / (tensor.max() - tensor.min())
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