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xc-llm-ascend/tests/ut/worker/test_pcp_manager.py
zhenwenqi2024 5d9fde9819 [Feature] Refactor PCP &DCP related code (#5214) 
### What this PR does / why we need it?
Refactor pcp& dcp related code. we use pcp_manager class to Unifiy
Manage pcp & dcp . as we do this , many code can be deleted from
model_runner, and can avoid break pcp & dcp by other developments.
RFC：https://github.com/vllm-project/vllm-ascend/issues/5449
### Does this PR introduce _any_ user-facing change?
NO

### How was this patch tested?

- vLLM version: release/v0.13.0
- vLLM main:
ad32e3e19c

---------

Signed-off-by: zhenwenqi2024 <zhenwenqi_2022@qq.com>
Co-authored-by: zzzzwwjj <34335947+zzzzwwjj@users.noreply.github.com>
2025-12-31 09:29:57 +08:00

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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This file is a part of the vllm-ascend project.
from unittest.mock import MagicMock
import numpy as np
import pytest
import torch
from vllm_ascend.worker.pcp_utils import PCPManager
@pytest.mark.parametrize(
"pcp_size, dcp_size, num_reqs, query_lens, num_decodes, use_mla, total_tokens, expect_not_none",
[
(1, 1, 5, [10, 20, 30, 40, 50], 2, False, 100, False),
(1, 2, 3, [20, 30, 40], 1, False, 50, True),
(2, 1, 4, [5, 10, 40, 60], 2, False, 100, True),
(2, 1, 4, [5, 10, 40, 60], 2, True, 100, True),
(2, 1, 3, [5, 10, 15], 3, False, 50, True),
(2, 1, 3, [40, 50, 60], 0, False, 150, True),
])
def test_generate_pcp_metadata_basic(pcp_size, dcp_size, num_reqs, query_lens,
num_decodes, use_mla, total_tokens,
expect_not_none):
vllm_config = MagicMock()
vllm_config.model_config = MagicMock()
vllm_config.model_config.use_mla = use_mla
vllm_config.parallel_config.cp_kv_cache_interleave_size = 64
vllm_config.speculative_config.num_speculative_tokens = 0
pcp_manager = PCPManager(pcp_world_size=pcp_size,
pcp_rank=0,
dcp_world_size=dcp_size,
dcp_rank=0,
max_buffer_num_tokens=10000,
max_num_reqs=1000,
device="cpu",
vllm_config=vllm_config,
pin_memory=False)
input_batch = MagicMock()
input_batch.num_reqs = num_reqs
num_computed_tokens = []
num_prompt_tokens = []
num_tokens = []
for i in range(num_reqs):
if i < num_decodes:
num_computed_tokens.append(query_lens[i])
num_prompt_tokens.append(query_lens[i] // 2)
num_tokens.append(query_lens[i])
else:
num_computed_tokens.append(0)
num_prompt_tokens.append(query_lens[i])
num_tokens.append(query_lens[i])
input_batch.num_computed_tokens_cpu = torch.tensor(num_computed_tokens)
input_batch.num_prompt_tokens = torch.tensor(num_prompt_tokens)
input_batch.num_tokens = torch.tensor(num_tokens)
query_lens = torch.tensor(query_lens)
result = pcp_manager.generate_pcp_metadata(total_tokens, query_lens, None,
input_batch)
if not expect_not_none:
assert result is None, f"Expected to return None, but got {type(result)}"
else:
assert result is not None, "Expected to return a metadata object, but got None."
assert hasattr(result, 'num_actual_tokens_pcp_padded')
assert hasattr(result, 'num_computed_tokens_of_pcp_dcp')
if pcp_size > 1:
assert hasattr(result, 'pcp_allgather_restore_idx')
has_prefill_requests = (num_reqs - num_decodes) > 0
if has_prefill_requests:
assert hasattr(result, 'q_head_idx_tensor')
assert hasattr(result, 'q_tail_idx_tensor')
assert hasattr(result, 'q_full_idx')
assert hasattr(result, 'kv_with_q_head_nomask_idx_tensor')
assert hasattr(result, 'kv_with_q_head_mask_idx_tensor')
assert hasattr(result, 'kv_with_q_tail_nomask_idx_tensor')
assert hasattr(result, 'kv_with_q_tail_mask_idx_tensor')
assert hasattr(result, 'attn_mask_seqlens')
assert hasattr(result, 'head_attn_nomask_seqlens')
assert hasattr(result, 'tail_attn_nomask_seqlens')
if hasattr(result, 'pcp_prefill_mask'
) and result.pcp_prefill_mask is not None:
if use_mla:
assert result.pcp_prefill_mask.shape == (512, 512)
else:
assert result.pcp_prefill_mask.shape == (2048, 2048)
else:
if hasattr(result, 'pcp_prefill_mask'):
if result.pcp_prefill_mask is not None:
if use_mla:
assert result.pcp_prefill_mask.shape == (512, 512)
else:
assert result.pcp_prefill_mask.shape == (2048,
2048)
@pytest.mark.parametrize(
"tokens, num_reqs, num_computed_tokens, num_prompt_tokens, pcp_size, pcp_rank, expected_pcp_tokens",
[
# Case 1: prefill only
([8, 12, 16], 3, [0, 0, 0], [8, 12, 16], 4, 0, [2, 4, 4]),
# # Case 2: mix prefill and decode
([8, 4, 12], 3, [8, 4, 0], [8, 0, 12], 4, 0, [2, 2, 4]),
# # Case 3: request which need to be padded
([3, 7, 9], 3, [0, 0, 0], [3, 7, 9], 4, 0, [2, 2, 4]),
# Case 4: single request
([10], 1, [0], [10], 4, 0, [4]),
])
def test_update_tokens_for_pcp_basic(tokens, num_reqs, num_computed_tokens,
num_prompt_tokens, pcp_size, pcp_rank,
expected_pcp_tokens):
vllm_config = MagicMock()
vllm_config.model_config = MagicMock()
vllm_config.speculative_config.num_speculative_tokens = 0
pcp_manager = PCPManager(pcp_world_size=pcp_size,
pcp_rank=0,
dcp_world_size=1,
dcp_rank=0,
max_buffer_num_tokens=10000,
max_num_reqs=1000,
device="cpu",
vllm_config=vllm_config,
pin_memory=False)
input_batch = MagicMock()
input_batch.num_reqs = num_reqs
input_batch.num_computed_tokens_cpu = np.array(num_computed_tokens,
dtype=np.int32)
input_batch.num_prompt_tokens = np.array(num_prompt_tokens, dtype=np.int32)
arange_np = np.arange(10000)
pcp_tokens_result, positions_result = pcp_manager.update_tokens_for_pcp(
np.array(tokens), arange_np, num_reqs, 1)
assert np.array_equal(pcp_tokens_result, expected_pcp_tokens), \
f"Expected pcp_tokens: {expected_pcp_tokens}, got: {pcp_tokens_result}"
total_pcp_tokens: int = np.sum(pcp_tokens_result)
assert positions_result.shape == (total_pcp_tokens,), \
f"Positions shape mismatch. Expected length {total_pcp_tokens}, got {positions_result.shape}"
# yapf: disable
@pytest.mark.parametrize(
"seq_lens, pcp_world_size, dcp_world_size, cp_kv_cache_interleave_size, target",
[
# without pcp and dcp
(torch.tensor([1, 2, 128, 129]), 1, 1, 1,
torch.tensor([[[1]], [[2]], [[128]], [[129]]])),
# pcp
(torch.tensor([1, 2, 128, 129]), 2, 1, 1,
torch.tensor([[[1], [0]], [[1], [1]], [[64], [64]], [[65], [64]]])),
# dcp
(torch.tensor([1, 2, 128, 129]), 1, 2, 1,
torch.tensor([[[1, 0]], [[1, 1]], [[64, 64]], [[65, 64]]])),
# pcp + dcp
(torch.tensor([1, 2, 128, 129]), 2, 2, 1,
torch.tensor([[[1, 0], [0, 0]], [[1, 1], [0, 0]],
[[32, 32], [32, 32]], [[33, 32], [32, 32]]])),
# specify interleave_size
(torch.tensor([1, 2, 128, 129]), 2, 1, 2,
torch.tensor([[[1], [0]], [[2], [0]], [[64], [64]], [[65], [64]]])),
(torch.tensor([1, 2, 128, 129]), 2, 1, 128,
torch.tensor([[[1], [0]], [[2], [0]], [[128], [0]], [[128], [1]]])),
(torch.tensor([1, 2, 128, 129, 256, 257]), 2, 2, 128,
torch.tensor([[[1, 0], [0, 0]], [[2, 0], [0, 0]],
[[128, 0], [0, 0]], [[128, 1], [0, 0]],
[[128, 128], [0, 0]], [[128, 128], [1, 0]]])),
]
)
# yapf: enable
def test_get_cp_local_seq_lens(
seq_lens,
pcp_world_size,
dcp_world_size,
cp_kv_cache_interleave_size,
target,
):
vllm_config = MagicMock()
vllm_config.model_config = MagicMock()
vllm_config.speculative_config.num_speculative_tokens = 0
pcp_manager = PCPManager(pcp_world_size=pcp_world_size,
pcp_rank=0,
dcp_world_size=dcp_world_size,
dcp_rank=0,
max_buffer_num_tokens=10000,
max_num_reqs=1000,
device="cpu",
vllm_config=vllm_config,
pin_memory=False)
ret = pcp_manager._get_cp_local_seq_lens(seq_lens, pcp_world_size,
dcp_world_size,
cp_kv_cache_interleave_size)
assert torch.equal(ret, target)
# yapf: disable
@pytest.mark.parametrize(
"req_ids, num_computed_tokens," \
"token_ids_tensor_list," \
"num_reqs, total_num_scheduled_tokens, num_scheduled_tokens," \
"target_input_ids_pcp_full, target_query_start_loc_pcp_full",
[
# prefill
(
['0'], np.array([0]),
[torch.tensor([0, 671, 6102, 294, 8760, 344])],
1, 6, {'0': 6},
torch.tensor([0, 671, 6102, 294, 8760, 344]),
torch.tensor([0, 6])
),
# decode
(
['0'], np.array([6]),
[torch.tensor([0, 671, 6102, 294, 8760, 344, 88907, 0])],
1, 2, {'0': 2},
torch.tensor([88907, 0]),
torch.tensor([0, 2])
),
# decode + prefill
(
['0', '1'], np.array([6, 0]),
[
torch.tensor([0, 671, 6102, 294, 8760, 344, 88907, 0]),
torch.tensor([0, 19923, 14, 1026, 2329, 344, 9807, 14, 342, 1030]),
],
2, 12, {'0': 2, '1': 10},
torch.tensor([88907, 0, 0, 19923, 14, 1026, 2329, 344, 9807, 14, 342, 1030]),
torch.tensor([0, 2, 12])
),
# decodes + prefills
(
['0', '1', '2', '3'], np.array([6, 8, 0, 0]),
[
torch.tensor([0, 671, 6102, 294, 8760, 344, 88907, 0]),
torch.tensor([0, 19923, 14, 1026, 2329, 344, 9807, 14, 342, 0]),
torch.tensor([0, 671, 8749, 294, 3702, 4106, 344, 88907]),
torch.tensor([0, 671, 5335, 1469, 7539, 305, 6397]),
],
4, 19, {'0': 2, '1': 2, '2': 8, '3': 7},
torch.tensor([88907, 0, 342, 0, 0, 671, 8749, 294, 3702, 4106, 344, 88907,
0, 671, 5335, 1469, 7539, 305, 6397]),
torch.tensor([0, 2, 4, 12, 19])
),
])
# yapf: enable
def test_generate_pcp_mtp_input(
req_ids,
num_computed_tokens,
token_ids_tensor_list,
num_reqs,
total_num_scheduled_tokens,
num_scheduled_tokens,
target_input_ids_pcp_full,
target_query_start_loc_pcp_full,
):
max_num_reqs = 4
max_model_len = 4096
max_num_tokens = 4096
vllm_config = MagicMock()
vllm_config.model_config = MagicMock()
vllm_config.speculative_config.num_speculative_tokens = 1
vllm_config.scheduler_config.max_num_seqs = max_num_reqs
vllm_config.scheduler_config.max_num_batched_tokens = max_model_len
pcp_manager = PCPManager(pcp_world_size=2,
pcp_rank=0,
dcp_world_size=1,
dcp_rank=0,
max_buffer_num_tokens=max_num_tokens,
max_num_reqs=max_num_reqs,
device="cpu",
vllm_config=vllm_config,
pin_memory=False)
arange_np = np.arange(max_model_len)
input_batch = MagicMock()
input_batch.num_computed_tokens_cpu = \
np.zeros(max_num_reqs, dtype=np.int32)
token_ids_cpu_tensor = torch.zeros(
(max_num_reqs, max_model_len),
device="cpu",
dtype=torch.int32,
)
input_batch.token_ids_cpu_tensor = token_ids_cpu_tensor
input_batch.token_ids_cpu = token_ids_cpu_tensor.numpy()
token_ids_cpu_tensor = input_batch.token_ids_cpu_tensor
# Set input_batch
input_batch.req_ids = req_ids
input_batch.num_computed_tokens_cpu[:num_computed_tokens.
size] = num_computed_tokens
for i, token_ids_tensor in enumerate(token_ids_tensor_list):
token_ids_cpu_tensor[i][:token_ids_tensor.size(0)] = token_ids_tensor
pcp_manager.generate_pcp_mtp_input(num_reqs, total_num_scheduled_tokens,
num_scheduled_tokens, False,
input_batch, arange_np)
assert torch.equal(
pcp_manager.input_ids_pcp_full.cpu[:total_num_scheduled_tokens],
target_input_ids_pcp_full)
assert torch.equal(pcp_manager.query_start_loc_pcp_full.cpu[:num_reqs + 1],
target_query_start_loc_pcp_full)
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