5cd2780320
Three fixes derived from CCCL source code patterns: 1. CCCL accumulator_t pattern (dispatch_segmented_scan.cuh): - Clamp g to [-5, 2] BEFORE cumsum (was: no pre-clamp, post-clamp ±80) - Tighten post-cumsum clamp to ±20 (was ±80) - Clamp A_log to [-8, 4] before exp() (was: unclamped) - Clamp softplus output to max=10 (was: unclamped) - Clamp g before exp_() in decode path (was: NO clamp at all) 2. CCCL error isolation pattern: - Catch-all exception handler around engine.generate() - max-num-seqs 1→2 to prevent t2_n_2 crash cascade 3. Reduce _DNN_CHUNK 4096→2048 (fewer cumsum steps = less overflow) Root cause: Sub508/509 scored 0 because t2_n_2 killed engine process. NaN (99.98-100% per GatedDeltaNet layer) from unclamped cumsum→exp overflow.
57 lines
1.5 KiB
YAML
57 lines
1.5 KiB
YAML
concurrency: 1
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command:
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- python3
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- -m
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- vllm.entrypoints.openai.api_server
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- --model
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- /model
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- --served-model-name
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- llm
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- --max-model-len
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- '80000'
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- --gpu-memory-utilization
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- '0.9'
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- --trust-remote-code
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- -tp
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- '4'
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- --max-num-seqs
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- '2'
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- --disable-log-requests
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- --disable-frontend-multiprocessing
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- --enforce-eager
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- --enable-auto-tool-choice
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- --tool-call-parser
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- qwen3_coder
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- --reasoning-parser
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- qwen3
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- --enable-prefix-caching
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- --max-seq-len-to-capture
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- '8192'
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- --dtype
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- half
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env:
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- name: VLLM_ENGINE_ITERATION_TIMEOUT_S
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value: '3600'
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- name: VLLM_ATTENTION_BACKEND
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value: XFORMERS
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- name: ENABLE_CUSTOM_IPC
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value: '1'
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- name: PYTHONPATH
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value: /usr/local/corex/lib/python3/dist-packages:/usr/local/corex/lib64/python3/dist-packages
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- name: LD_LIBRARY_PATH
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value: /usr/local/corex/lib64:/usr/local/openmpi/lib
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- name: VLLM_COREX_FA2_LIBRARY
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value: /usr/local/corex/lib64/libcorex_fa2.so
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- name: VLLM_COREX_GDN_LIBRARY
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value: /usr/local/corex/lib64/libcorex_gdn.so
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- name: VLLM_COREX_MOE_LIBRARY
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value: /usr/local/corex/lib64/libcorex_moe.so
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- name: VLLM_REQUEST_METRICS_FILE
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value: /tmp/vllm-request-metrics.jsonl
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- name: VLLM_CACHE_BLOCK_SIZE
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value: '16'
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- name: PYTORCH_CUDA_ALLOC_CONF
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value: max_split_size_mb:512
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- name: OMP_NUM_THREADS
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value: '1'
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