vllm/tests/distributed/test_pipeline_partition.py
Russell Bryant e489ad7a21
[Misc] Add SPDX-License-Identifier headers to python source files (#12628)
- **Add SPDX license headers to python source files**
- **Check for SPDX headers using pre-commit**

commit 9d7ef44c3cfb72ca4c32e1c677d99259d10d4745
Author: Russell Bryant <rbryant@redhat.com>
Date:   Fri Jan 31 14:18:24 2025 -0500

    Add SPDX license headers to python source files
    
This commit adds SPDX license headers to python source files as
recommended to
the project by the Linux Foundation. These headers provide a concise way
that is
both human and machine readable for communicating license information
for each
source file. It helps avoid any ambiguity about the license of the code
and can
    also be easily used by tools to help manage license compliance.
    
The Linux Foundation runs license scans against the codebase to help
ensure
    we are in compliance with the licenses of the code we use, including
dependencies. Having these headers in place helps that tool do its job.
    
    More information can be found on the SPDX site:
    
    - https://spdx.dev/learn/handling-license-info/
    
    Signed-off-by: Russell Bryant <rbryant@redhat.com>

commit 5a1cf1cb3b80759131c73f6a9dddebccac039dea
Author: Russell Bryant <rbryant@redhat.com>
Date:   Fri Jan 31 14:36:32 2025 -0500

    Check for SPDX headers using pre-commit
    
    Signed-off-by: Russell Bryant <rbryant@redhat.com>

---------

Signed-off-by: Russell Bryant <rbryant@redhat.com>
2025-02-02 11:58:18 -08:00

37 lines
1.3 KiB
Python

# SPDX-License-Identifier: Apache-2.0
import os
import pytest
from vllm.distributed.utils import get_pp_indices
def test_custom_layer_partition():
def _verify(partition_str, num_layers, pp_size, goldens):
bak = os.environ.get("VLLM_PP_LAYER_PARTITION", None)
os.environ["VLLM_PP_LAYER_PARTITION"] = partition_str
for pp_rank, golden in enumerate(goldens):
assert get_pp_indices(num_layers, pp_rank, pp_size) == golden
if bak is not None:
os.environ["VLLM_PP_LAYER_PARTITION"] = bak
# Even partition
_verify("5,5,5,5", 20, 4, [(0, 5), (5, 10), (10, 15), (15, 20)])
# Balanced partition
_verify("4,6,6,4", 20, 4, [(0, 4), (4, 10), (10, 16), (16, 20)])
# Put reminder somewhere
_verify("5,6,5,6", 22, 4, [(0, 5), (5, 11), (11, 16), (16, 22)])
# Invalid partition strings
with pytest.raises(ValueError):
_verify("5,5,5,5,", 20, 4, [(0, 5), (5, 10), (10, 15), (15, 20)])
with pytest.raises(ValueError):
_verify("5,5,5,a", 20, 4, [(0, 5), (5, 10), (10, 15), (15, 20)])
# Wrong number of partitions
with pytest.raises(ValueError):
_verify("5,5,5", 20, 4, [(0, 5), (5, 10), (10, 15), (15, 20)])
# Wrong number of layers
with pytest.raises(ValueError):
_verify("5,5,5,5", 21, 4, [(0, 5), (5, 10), (10, 15), (15, 20)])