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docs(tts): document Kokoro ANE A12 memory and routing limitations - #1009
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Alex-Wengg merged 1 commit intoOct 11, 2026
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Alex-Wengg merged 1 commit into
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The diff documents the legacy A12 observations, clarifies that neither a minimum supported chip nor a universal Vocoder memory requirement has been established, and separates the Noise stack-guard fault from the existing OS issues. It includes the maintainer's proposed CPU-only Vocoder override while retaining the iOS 18 defaults, explicitly identifying it as an unverified diagnostic experiment. It also limits these observations to the legacy runtime and explains why simulator results do not validate physical-device compatibility. Fixes FluidInference#979. Refs FluidInference#979
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@Alex-Wengg thanks for taking the Kokoro ANE A12 notes, hope they save the next person some digging. |
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Why is this change needed?
The diff documents the legacy A12 observations, clarifies that neither a minimum supported chip nor a universal Vocoder memory requirement has been established, and separates the Noise stack-guard fault from the existing OS issues. It includes the maintainer's proposed CPU-only Vocoder override while retaining the iOS 18 defaults, explicitly identifying it as an unverified diagnostic experiment. It also limits these observations to the legacy runtime and explains why simulator results do not validate physical-device compatibility. Refs #979.
The Kokoro ANE documentation did not explain the legacy runtime's hardware limits or distinguish successful model loading from working synthesis. On the reported iPhone XR configuration, loading Vocoder with CPU+ANE killed the process; moving Vocoder to CPU allowed loading but synthesis later crashed in Noise. The documentation omitted the A12 memory-limit report and the distinction between forced
aneTailCpurouting and the iOS 18 defaults, which request CPU+GPU for Noise and Tail. It also did not distinguish the reported BNNS worker-stack exhaustion from the existing input-overread and segfault cases.Refs #979