SignalTech/AI
TRUTH SOCIAL: NVLINK MULTICAST IS NOT SUPPORTED ON BLACKWELL "CONFIDENTIAL COMPUTING" LEADING TO 61% PERFORMANCE REGRESSION ON SGLANG QWEN3.5 397B ACCORDING TO @VERDACLOUD 'S RECENT GITHUB TICKET. NVI
NVLink multicast unsupported on Blackwell Confidential Computing causes 61% performance regression on SGLang Qwen3.5 397
What changed
NVLink multicast unsupported on Blackwell Confidential Computing causes 61% performance regression on SGLang Qwen3.5 397
Why it matters
NVLink multicast unsupported on Blackwell Confidential Computing causes 61% performance regression on SGLang Qwen3.5 397 — impact context not separately stored; see What changed.
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Jun 14, 2026 07:03 AM ET