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[V1] V1 Enablement Oracle (#13726)

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Signed-off-by: rshaw@neuralmagic.com <rshaw@neuralmagic.com>
Co-authored-by: rshaw@neuralmagic.com <rshaw@neuralmagic.com>
Co-authored-by: Nicolò Lucchesi <nlucches@redhat.com>
Co-authored-by: Tyler Michael Smith <tyler@neuralmagic.com>
Co-authored-by: Michael Goin <michael@neuralmagic.com>
This commit is contained in:
Robert Shaw
2025-03-15 01:02:20 -04:00
committed by GitHub
parent 8c0d15d5c5
commit d4d93db2c5
96 changed files with 1537 additions and 512 deletions
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28
tests/kernels/test_attention_selector.py
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@@ -23,12 +23,14 @@ def clear_cache():
@pytest.mark.parametrize(
"name", ["TORCH_SDPA", "ROCM_FLASH", "XFORMERS", "FLASHINFER", "OPENVINO"])
@pytest.mark.parametrize("use_v1", [True, False])
@pytest.mark.parametrize("device", ["cpu", "openvino", "hip", "cuda"])
def test_env(name: str, device: str, monkeypatch):
def test_env(name: str, use_v1: bool, device: str, monkeypatch):
"""Test that the attention selector can be set via environment variable.
Note that we do not test FlashAttn because it is the default backend.
"""
monkeypatch.setenv("VLLM_USE_V1", "1" if use_v1 else "0")
override_backend_env_variable(monkeypatch, name)
if device == "cpu":
@@ -40,7 +42,8 @@ def test_env(name: str, device: str, monkeypatch):
with patch("vllm.attention.selector.current_platform", RocmPlatform()):
backend = get_attn_backend(16, torch.float16, torch.float16, 16,
False)
assert backend.get_name() == "ROCM_FLASH"
EXPECTED = "ROCM_ATTN_VLLM_V1" if use_v1 else "ROCM_FLASH"
assert backend.get_name() == EXPECTED
elif device == "openvino":
with patch("vllm.attention.selector.current_platform",
OpenVinoPlatform()), patch.dict('sys.modules',
@@ -54,7 +57,8 @@ def test_env(name: str, device: str, monkeypatch):
CudaPlatform()):
backend = get_attn_backend(16, torch.float16, torch.float16,
16, False)
assert backend.get_name() == name
EXPECTED = "FLASH_ATTN_VLLM_V1" if use_v1 else name
assert backend.get_name() == EXPECTED
def test_flash_attn(monkeypatch):
@@ -95,13 +99,23 @@ def test_flash_attn(monkeypatch):
assert backend.get_name() != STR_FLASH_ATTN_VAL
def test_invalid_env(monkeypatch):
@pytest.mark.parametrize("use_v1", [True, False])
def test_invalid_env(use_v1: bool, monkeypatch):
"""Ignore the invalid env variable if it is set."""
monkeypatch.setenv("VLLM_USE_V1", "1" if use_v1 else "0")
override_backend_env_variable(monkeypatch, STR_INVALID_VAL)
with patch("vllm.attention.selector.current_platform", CudaPlatform()):
backend = get_attn_backend(32, torch.float16, None, 16, False)
assert backend.get_name() == "FLASH_ATTN"
EXPECTED = "FLASH_ATTN_VLLM_V1" if use_v1 else "FLASH_ATTN"
assert backend.get_name() == EXPECTED
# when block size == 16, backend will fall back to XFORMERS
backend = get_attn_backend(16, torch.float16, None, 16, False)
assert backend.get_name() == "XFORMERS"
# this behavior is not yet supported on V1.
if use_v1:
# TODO: support fallback on V1!
# https://github.com/vllm-project/vllm/issues/14524
pass
else:
backend = get_attn_backend(16, torch.float16, None, 16, False)
assert backend.get_name() == "XFORMERS"