Claude 5cd2780320 fix(CRITICAL): CCCL overflow guard — clamp before cumsum + max-num-seqs=2 ...

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.

2026-08-08 21:49:39 +00:00

..

qwen3_5

[DEPLOY] Complete submission: baseline + all optimizations

2026-07-30 16:06:20 +00:00

qwen3_5_moe

[DEPLOY] Complete submission: baseline + all optimizations

2026-07-30 16:06:20 +00:00

reasoning

fix(critical): 3 fixes from sub508 diagnosis — n>1 crash guard + thinking format + content fallback

2026-08-07 07:55:04 +00:00

_custom_ops.py

fix(critical): CCCL policy_selector degradation for MoE — PyTorch fallback for topk_softmax

2026-08-07 08:56:50 +00:00

api_server.py

refactor(api): CCCL tuning_adjacent_difference policy_selector — dynamic error handling

2026-08-08 07:01:37 +00:00

arg_utils.py

[ARCH] Eliminate AST patch scripts — full file replacements only

2026-08-05 08:24:43 +00:00

chat_utils.py

fix(critical): 3 bugs causing 0.0 score — OOM crash + thinking param + multimodal

2026-08-07 07:05:40 +00:00

cli_args.py

[DEPLOY] Complete submission: baseline + all optimizations

2026-07-30 16:06:20 +00:00

logits_processor.py

[ARCH] Eliminate AST patch scripts — full file replacements only

2026-08-05 08:24:43 +00:00

mamba_cache.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

model_runner.py

fix(engine): CCCL overflow_cast + checked_allocator patterns for NaN/OOM

2026-08-07 08:56:36 +00:00

paged_attention_v2_pytorch.py

[ENGINE] CCCL SmemResource pattern: pre-allocate staging buffers in V2 paged attention

2026-08-07 04:37:44 +00:00

paged_attn.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

patch_model_runner.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

patch_numerical_stability.py

fix(cccl): robust fallback — inject module-level safety if regex misses

2026-08-07 09:58:35 +00:00

patch_ops.sh

fix(CRITICAL): CCCL overflow guard — clamp before cumsum + max-num-seqs=2

2026-08-08 21:49:39 +00:00

patch_transformers_qwen3_5.py

fix(critical): remove pip install transformers — was breaking corex kernel loading

2026-08-07 10:02:09 +00:00

patch_vllm_tool_parser.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

patch_xformers_sdpa_batch_kernel.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

patch_xformers_sdpa_batch.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

patch_xformers_sdpa_seq_kernel.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

patch_xformers_sdpa_seq.py

arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler

2026-08-08 10:48:01 +00:00

prefix_prefill.py

fix(critical): v2 kernel softmax normalization was commented out — outputs were wrong

2026-08-07 02:46:46 +00:00

probe_corex_api.py

fix(build): add .dockerignore + safe probe — fix docker build failure

2026-08-08 11:21:43 +00:00

protocol.py

fix(dispatch): radix_sort-inspired size-dispatch — disable thinking for small max_tokens, clamp oversized max_tokens

2026-08-08 07:36:31 +00:00

qwen3_5_base_original.py

arch(CRITICAL): replace custom qwen3_5.py with base original (1369 lines)

2026-08-08 08:10:55 +00:00

qwen3_5.py

fix(CRITICAL): CCCL overflow guard — clamp before cumsum + max-num-seqs=2

2026-08-08 21:49:39 +00:00

qwen3coder_tool_parser.py

refactor(tool_parser): CCCL agent_radix_sort_downsweep union TempStorage — phased state

2026-08-08 07:02:22 +00:00

registry.py

[ARCH] Eliminate 2 more patch scripts — registry.py + tool_parsers __init__.py

2026-08-05 08:36:52 +00:00

sampler.py

[BASE] qwen3_6_scripts/sampler.py: CCCL topk unsorted output optimization

2026-08-06 02:55:51 +00:00

scheduler.py

[DEPLOY] Complete submission: baseline + all optimizations

2026-07-30 16:06:20 +00:00

sequence.py

[DEPLOY] Complete submission: baseline + all optimizations

2026-07-30 16:06:20 +00:00

serving_chat.py

fix(CRITICAL): CCCL overflow guard — clamp before cumsum + max-num-seqs=2

2026-08-08 21:49:39 +00:00

tool_parsers_init.py

[ARCH] Eliminate 2 more patch scripts — registry.py + tool_parsers __init__.py

2026-08-05 08:36:52 +00:00

verify_functional.py

fix(verify): remove duplicate TC-22~30 test definitions — CCCL test_then.cu audit

2026-08-07 06:36:12 +00:00

xformers.py

feat(xformers): replace Q-only tiling with Q+KV tiling + online softmax

2026-08-07 01:54:52 +00:00