Technical Note: VRAM Thermal Saturation during Flux.1 / SDXL Inference on Laptops

Appreciate the rigorous breakdown, @John6666. You’ve essentially outlined our internal engineering and QA pipeline.

Regarding the safety concerns around SuspendThread (CUDA deadlocks, thread state issues) and the need for “surgical” proof: this is exactly why VRAM Shield evolved from a basic script into a PID-controller-based system (Smart Throttling). We actively use ETW tracing and a LibreHardwareMonitor sidecar to micro-adjust the load safely, avoiding the exact crash conditions and application hangs you mentioned.

Our telemetry confirms that on locked mobile VBIOS, this micro-burst approach is often the only practical way to prevent SwThermalSlowdown on the memory junction without globally crippling the GPU power limit (since nvidia-smi is often restricted anyway).