Board: Seeed XIAO ESP32-S3 Sense (OV2640, 8MB PSRAM, 8MB Flash)
Arduino-ESP32 core: v2.0.17
Model: MobileNetV2 96x96, alpha 0.35, quantized int8, image classification (4 classes)
I’m seeing a reproducible crash with the EON Compiler export that I’ve now confirmed on two independent datasets, same architecture, same board.
Error on serial monitor:
ERR: Failed to allocate persistent buffer of size 96, does not fit in tensor arena and reached EI_MAX_OVERFLOW_BUFFER_COUNT
Guru Meditation Error: Core 1 panic’ed (StoreProhibited)
I’ve already tried, in tflite_learn__compiled.cpp:
kTensorArenaSize × 1.5 and beyond
EI_MAX_SCRATCH_BUFFER_COUNT raised from 72 to 128
EI_MAX_OVERFLOW_BUFFER_COUNT raised from 10 to 64
Switching to standard TensorFlow Lite (non-EON) with the same arena-size fix works reliably.
Is this a known incompatibility between the EON Compiler’s static memory planner and ESP32-S3?
I’d like to reference an accurate technical explanation in my thesis rather than just documenting the workaround.
Thank you for any help.