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<title>open-iov.git/tools/cuda-ab/run/memset_probe, branch master</title>
<subtitle>Open-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers
</subtitle>
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<updated>2026-10-21T14:58:58+00:00</updated>
<entry>
<title>tools/cuda-ab: memset_probe + wedge_recover forensics clients (session 10)</title>
<updated>2026-10-21T14:58:58+00:00</updated>
<author>
<name>Arthur Hanson Rasmusson</name>
<email>arthur@vgpu.io</email>
</author>
<published>2026-10-21T14:58:58+00:00</published>
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memset_probe: linear 8 MB cudaMemset + D2H with first-bad offset and a
4 KB page map (correct / other / malloc-prefill) - separates 'fill
under-delivered' from 'readback delivered wrong pages'; standalone green,
bisects the memcpy_roundtrip memset phase.

wedge_recover: launch+verify loop that on failure sleeps N seconds and
retries the same iteration (same context), reporting per-iteration
attempts and launch times - tests whether an idle gap heals the per-boot
no-execute wedge (r409 log shows a ~37 s client-side gap healed a wedged
run).

Also ships the missing inplace_scale run binary (its source landed in
7685d1b3).
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