test_cpu_offload.py

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project

# Expanded quantized model tests for CPU offloading
# Base tests: tests/basic_correctness/test_cpu_offload.py

import os
import pytest

from tests.quantization.utils import is_quant_method_supported

from ..utils import compare_two_settings, models_path_prefix


@pytest.mark.skipif(
    not is_quant_method_supported("fp8"),
    reason="fp8 is not supported on this GPU type.",
)
def test_cpu_offload_fp8():
    # Test loading a quantized checkpoint
    compare_two_settings(
        os.path.join(models_path_prefix, "neuralmagic/Qwen2-1.5B-Instruct-FP8"),
        ["--enforce_eager"],
        ["--enforce_eager", "--cpu-offload-gb", "1"],
        max_wait_seconds=480,
    )


@pytest.mark.skipif(
    not is_quant_method_supported("gptq_marlin"),
    reason="gptq_marlin is not supported on this GPU type.",
)
def test_cpu_offload_gptq(monkeypatch):
    # This quant method is sensitive to dummy weights, so we force real weights
    monkeypatch.setenv("VLLM_TEST_FORCE_LOAD_FORMAT", "auto")
    # Test GPTQ Marlin
    compare_two_settings(
        os.path.join(models_path_prefix, "Qwen/Qwen2-1.5B-Instruct-GPTQ-Int4"),
        ["--enforce_eager"],
        ["--enforce_eager", "--cpu-offload-gb", "1"],
        max_wait_seconds=480,
    )


@pytest.mark.skipif(
    not is_quant_method_supported("awq_marlin"),
    reason="awq_marlin is not supported on this GPU type.",
)
def test_cpu_offload_awq(monkeypatch):
    # This quant method is sensitive to dummy weights, so we force real weights
    monkeypatch.setenv("VLLM_TEST_FORCE_LOAD_FORMAT", "auto")
    # Test AWQ Marlin
    compare_two_settings(
        os.path.join(models_path_prefix, "Qwen/Qwen2-1.5B-Instruct-AWQ"),
        ["--enforce_eager"],
        ["--enforce_eager", "--cpu-offload-gb", "1"],
        max_wait_seconds=480,
    )


@pytest.mark.skipif(
    not is_quant_method_supported("gptq_marlin"),
    reason="gptq_marlin is not supported on this GPU type.",
)
def test_cpu_offload_compressed_tensors(monkeypatch):
    # This quant method is sensitive to dummy weights, so we force real weights
    monkeypatch.setenv("VLLM_TEST_FORCE_LOAD_FORMAT", "auto")
    # Test wNa16
    compare_two_settings(
        os.path.join(models_path_prefix, "nm-testing/Qwen1.5-MoE-A2.7B-Chat-quantized.w4a16"),
        ["--enforce_eager"],
        ["--enforce_eager", "--cpu-offload-gb", "1"],
        max_wait_seconds=480,
    )