ba214ef3d3
Co-authored-by: hnyls2002 <lsyincs@gmail.com> Co-authored-by: Liangsheng Yin <hnyls2002@gmail.com>
75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
"""NGRAM speculative-decoding server fixture.
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Variants combine this base with `GSM8KMixin` and override `attention_backend`
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(required) plus optional `extra_args` to select a backend / pass extra flags.
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Example:
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from sglang.test.server_fixtures.ngram_fixture import NgramServerBase
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from sglang.test.kits.eval_accuracy_kit import GSM8KMixin
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class TestNgramSpeculativeDecodingTriton(NgramServerBase, GSM8KMixin):
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attention_backend = "triton"
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The base itself is NOT a runnable test (no `test_*` methods until a subclass
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mixes in GSM8KMixin), so unittest discovery picks it up as empty.
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"""
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from sglang.srt.environ import envs
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from sglang.srt.utils import kill_process_tree
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from sglang.test.test_utils import (
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DEFAULT_TARGET_MODEL_NGRAM,
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DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
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DEFAULT_URL_FOR_TEST,
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CustomTestCase,
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popen_launch_server,
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)
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DEFAULT_NGRAM_SERVER_ARGS = [
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"--trust-remote-code",
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"--cuda-graph-max-bs",
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"8",
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"--speculative-algorithm",
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"NGRAM",
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"--speculative-num-draft-tokens",
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"16",
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"--mem-fraction-static",
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0.8,
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]
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class NgramServerBase(CustomTestCase):
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model = DEFAULT_TARGET_MODEL_NGRAM
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base_url = DEFAULT_URL_FOR_TEST
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gsm8k_accuracy_thres = 0.79
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gsm8k_accept_length_thres = 1.8
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# Subclasses must set `attention_backend`; `extra_args` is optional.
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attention_backend: str = ""
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extra_args: list = []
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@classmethod
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def get_server_args(cls):
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assert cls.attention_backend, f"{cls.__name__} must set `attention_backend`"
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return (
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DEFAULT_NGRAM_SERVER_ARGS
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+ ["--attention-backend", cls.attention_backend]
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+ list(cls.extra_args)
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)
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@classmethod
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def setUpClass(cls):
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# disable deep gemm precompile to make launch server faster
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# please don't do this if you want to make your inference workload faster
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envs.SGLANG_JIT_DEEPGEMM_PRECOMPILE.set(False)
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envs.SGLANG_ENABLE_JIT_DEEPGEMM.set(False)
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cls.process = popen_launch_server(
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cls.model,
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cls.base_url,
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timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
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other_args=cls.get_server_args(),
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)
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@classmethod
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def tearDownClass(cls):
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kill_process_tree(cls.process.pid)
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