Sorry if it’s already fixed, then I’ll learn how to never experience that again. However, as some of you may know, sometimes your Spark launches in a weird power mode, where the performances are abysmal. That’s the Power Delivery bug. Solution is to unplug it from the wall and replug it. (is there…

Nice, next you need to integrate it with an SNMP controlled power strip to automate the power off/on as well. I really hope this will be fixed before such measures are needed.

Good approach for pre-launch detection. For continuous in-flight monitoring — a community member hit the PD failure mode yesterday mid-inference and captured it live: CLOCK THROTTLED at 611 MHz with 96% GPU load. sparkview is a GB10-aware TUI monitor that watches these signals continuously — clock …

this is a pretty cool tool. the IO always seems to be at critical though on both of my sparks (even at idle) which causes it to constantly log. the status thresholds maybe need tuning?

Confirmed — this appears to be a GB10 calibration issue. IO PSI can register HIGH/CRITICAL at idle with VLLM loaded due to unified memory behavior, even with no visible process-level disk activity. Multiple GB10 systems are showing the same pattern. The current thresholds were tuned on discrete GPU…

I just hit it multiple times today for some reason. That happened after the system ram usage exploded to the point when power button didn’t work and I had to unplug the cord. Was it reported to NVIDIA?

Power delivery bug: How I'm catching it early

Accelerated Computing DGX Spark / GB10 User Forum DGX Spark / GB10

parallelArchitect April 19, 2026, 10:26pm 9

Checked the DGX OS 7 release notes — no mention of a PD negotiation
fix. Power cycle is still the only confirmed recovery path.

Worth tracking:

I am EXTREMely disappointed with the current state of DGX Spark

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Power delivery bug: How I'm catching it early

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