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Construct KVTransferConfig properly from Python instead of using JSON blobs without CLI (#17994)

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Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
This commit is contained in:
Harry Mellor
2025-05-12 19:25:33 +01:00
committed by GitHub
parent 98ea35601c
commit 72a3f6b898
5 changed files with 37 additions and 31 deletions
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14
examples/lmcache/disagg_prefill_lmcache_v0.py
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@ -49,9 +49,10 @@ def run_prefill(prefill_done, prompts):
sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=1) sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=1)
ktc = KVTransferConfig.from_cli( ktc = KVTransferConfig(kv_connector="LMCacheConnector",
'{"kv_connector":"LMCacheConnector","kv_role":"kv_producer","kv_rank":0,"kv_parallel_size":2}' kv_role="kv_producer",
) kv_rank=0,
kv_parallel_size=2)
# Set GPU memory utilization to 0.8 for an A40 GPU with 40GB # Set GPU memory utilization to 0.8 for an A40 GPU with 40GB
# memory. Reduce the value if your GPU has less memory. # memory. Reduce the value if your GPU has less memory.
llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2", llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2",
@ -78,9 +79,10 @@ def run_decode(prefill_done, prompts, timeout=1):
sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10) sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10)
ktc = KVTransferConfig.from_cli( ktc = KVTransferConfig(kv_connector="LMCacheConnector",
'{"kv_connector":"LMCacheConnector","kv_role":"kv_consumer","kv_rank":1,"kv_parallel_size":2}' kv_role="kv_consumer",
) kv_rank=1,
kv_parallel_size=2)
# Set GPU memory utilization to 0.8 for an A40 GPU with 40GB # Set GPU memory utilization to 0.8 for an A40 GPU with 40GB
# of memory. Reduce the value if your GPU has less memory. # of memory. Reduce the value if your GPU has less memory.
llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2", llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2",

8
examples/lmcache/kv_cache_sharing_lmcache_v1.py
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@ -49,8 +49,8 @@ def run_store(store_done, prompts):
sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10) sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10)
ktc = KVTransferConfig.from_cli( ktc = KVTransferConfig(kv_connector="LMCacheConnectorV1",
'{"kv_connector":"LMCacheConnectorV1", "kv_role":"kv_both"}') kv_role="kv_both")
# Set GPU memory utilization to 0.8 for an A40 GPU with 40GB # Set GPU memory utilization to 0.8 for an A40 GPU with 40GB
# memory. Reduce the value if your GPU has less memory. # memory. Reduce the value if your GPU has less memory.
llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2", llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2",
@ -76,8 +76,8 @@ def run_retrieve(store_done, prompts, timeout=1):
sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10) sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10)
ktc = KVTransferConfig.from_cli( ktc = KVTransferConfig(kv_connector="LMCacheConnectorV1",
'{"kv_connector":"LMCacheConnectorV1", "kv_role":"kv_both"}') kv_role="kv_both")
# Set GPU memory utilization to 0.8 for an A40 GPU with 40GB # Set GPU memory utilization to 0.8 for an A40 GPU with 40GB
# of memory. Reduce the value if your GPU has less memory. # of memory. Reduce the value if your GPU has less memory.
llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2", llm = LLM(model="mistralai/Mistral-7B-Instruct-v0.2",

21
examples/offline_inference/disaggregated-prefill-v1/decode_example.py
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@ -16,16 +16,17 @@ except FileNotFoundError:
sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10) sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=10)
llm = LLM( llm = LLM(model="meta-llama/Llama-3.2-1B-Instruct",
model="meta-llama/Llama-3.2-1B-Instruct", enforce_eager=True,
enforce_eager=True, gpu_memory_utilization=0.8,
gpu_memory_utilization=0.8, max_num_batched_tokens=64,
max_num_batched_tokens=64, max_num_seqs=16,
max_num_seqs=16, kv_transfer_config=KVTransferConfig(
kv_transfer_config=KVTransferConfig.from_cli( kv_connector="SharedStorageConnector",
'{"kv_connector":"SharedStorageConnector","kv_role":"kv_both",' kv_role="kv_both",
'"kv_connector_extra_config": {"shared_storage_path": "local_storage"}}' kv_connector_extra_config={
)) #, max_model_len=2048, max_num_batched_tokens=2048) "shared_storage_path": "local_storage"
})) #, max_model_len=2048, max_num_batched_tokens=2048)
# 1ST generation (prefill instance) # 1ST generation (prefill instance)
outputs = llm.generate(prompts, sampling_params) outputs = llm.generate(prompts, sampling_params)

11
examples/offline_inference/disaggregated-prefill-v1/prefill_example.py
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@ -17,11 +17,12 @@ sampling_params = SamplingParams(temperature=0, top_p=0.95, max_tokens=1)
llm = LLM(model="meta-llama/Llama-3.2-1B-Instruct", llm = LLM(model="meta-llama/Llama-3.2-1B-Instruct",
enforce_eager=True, enforce_eager=True,
gpu_memory_utilization=0.8, gpu_memory_utilization=0.8,
kv_transfer_config=KVTransferConfig.from_cli( kv_transfer_config=KVTransferConfig(
'{"kv_connector":"SharedStorageConnector","kv_role":"kv_both", ' kv_connector="SharedStorageConnector",
'"kv_connector_extra_config": ' kv_role="kv_both",
'{"shared_storage_path": "local_storage"}}') kv_connector_extra_config={
) #, max_model_len=2048, max_num_batched_tokens=2048) "shared_storage_path": "local_storage"
})) #, max_model_len=2048, max_num_batched_tokens=2048)
# 1ST generation (prefill instance) # 1ST generation (prefill instance)
outputs = llm.generate( outputs = llm.generate(

14
examples/offline_inference/disaggregated_prefill.py
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@ -32,9 +32,10 @@ def run_prefill(prefill_done):
# This instance is the prefill node (kv_producer, rank 0). # This instance is the prefill node (kv_producer, rank 0).
# The number of parallel instances for KV cache transfer is set to 2, # The number of parallel instances for KV cache transfer is set to 2,
# as required for PyNcclConnector. # as required for PyNcclConnector.
ktc = KVTransferConfig.from_cli( ktc = KVTransferConfig(kv_connector="PyNcclConnector",
'{"kv_connector":"PyNcclConnector","kv_role":"kv_producer","kv_rank":0,"kv_parallel_size":2}' kv_role="kv_producer",
) kv_rank=0,
kv_parallel_size=2)
# Set GPU memory utilization to 0.8 for an A6000 GPU with 40GB # Set GPU memory utilization to 0.8 for an A6000 GPU with 40GB
# memory. You may need to adjust the value to fit your GPU. # memory. You may need to adjust the value to fit your GPU.
@ -71,9 +72,10 @@ def run_decode(prefill_done):
# This instance is the decode node (kv_consumer, rank 1). # This instance is the decode node (kv_consumer, rank 1).
# The number of parallel instances for KV cache transfer is set to 2, # The number of parallel instances for KV cache transfer is set to 2,
# as required for PyNcclConnector. # as required for PyNcclConnector.
ktc = KVTransferConfig.from_cli( ktc = KVTransferConfig(kv_connector="PyNcclConnector",
'{"kv_connector":"PyNcclConnector","kv_role":"kv_consumer","kv_rank":1,"kv_parallel_size":2}' kv_role="kv_consumer",
) kv_rank=1,
kv_parallel_size=2)
# Set GPU memory utilization to 0.8 for an A6000 GPU with 40GB # Set GPU memory utilization to 0.8 for an A6000 GPU with 40GB
# memory. You may need to adjust the value to fit your GPU. # memory. You may need to adjust the value to fit your GPU.