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Varun Sundar Rabindranath
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tests/basic_correctness/test_multi_step_chunked_prefill.py
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# Test the AsyncLLMEngine with multi-step-decoding and chunked prefill | ||
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from typing import List | ||
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import pytest | ||
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from ..utils import RemoteOpenAIServer | ||
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MODELS = [ | ||
"facebook/opt-125m", | ||
"meta-llama/Llama-2-7b-hf", | ||
] | ||
NUM_SCHEDULER_STEPS = [8, 16] # Multi-step decoding steps | ||
NUM_PROMPTS = [100] | ||
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# TODO (varun) : Expand tests for multiple TP & PP | ||
DEFAULT_SERVER_ARGS: List[str] = [ | ||
"--disable-log-requests", | ||
"--use-v2-block-manager", | ||
"--worker-use-ray", | ||
"--gpu-memory-utilization", | ||
"0.90", | ||
"--swap-space", | ||
"16", | ||
"--tensor-parallel-size", | ||
"1", | ||
"--pipeline-parallel-size", | ||
"1", | ||
] | ||
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async def completions_with_server_args(prompts: List[str], model_name: str, | ||
server_cli_args: List[str]): | ||
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outputs = None | ||
with RemoteOpenAIServer(model_name, server_cli_args) as server: | ||
client = server.get_async_client() | ||
outputs = await client.completions.create(model=model_name, | ||
prompt=prompts, | ||
temperature=0, | ||
stream=False, | ||
max_tokens=150) | ||
assert outputs is not None | ||
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return outputs | ||
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@pytest.mark.parametrize("model", MODELS) | ||
@pytest.mark.parametrize("num_scheduler_steps", NUM_SCHEDULER_STEPS) | ||
@pytest.mark.parametrize("num_prompts", NUM_PROMPTS) | ||
@pytest.mark.asyncio | ||
async def test_mutli_step_with_chunked_prefill(example_prompts, model: str, | ||
num_scheduler_steps: int, | ||
num_prompts: int): | ||
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prompts = example_prompts | ||
if len(prompts) < num_prompts: | ||
prompts = prompts * ((num_prompts // len(prompts)) + 1) | ||
prompts = prompts[:num_prompts] | ||
assert len(prompts) == num_prompts | ||
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server_args = DEFAULT_SERVER_ARGS + \ | ||
["--num-scheduler-steps", f"{num_scheduler_steps}"] | ||
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ref_completions = await completions_with_server_args( | ||
prompts, model, server_args) | ||
test_completions = await completions_with_server_args( | ||
prompts, model, server_args + ["--enable-chunked-prefill"]) | ||
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def get_text_generations(completions): | ||
return [x.text for x in completions.choices] | ||
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ref_generations = get_text_generations(ref_completions) | ||
test_generations = get_text_generations(test_completions) | ||
assert ref_generations == test_generations |
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