I just managed to kill the driver for my network card with an out-of-bounds write in my GPU code!? Security of those GPUs must be awesome..
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I've managed to simply crash my machine with a buggy GPU kernels many times. Sometimes it just kills my desktop but can still login via ssh.
Theoretically the memory protection scheme used by the OS is replicated on the GPU. But in practice we don't seem to be there yet..
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I would've figured an IOMMU would've stopped rogue mem accesses, but perhaps gfx hardware (and CUDA) doesn't play nice w/ it?
Thanks. Twitter will use this to make your timeline better. UndoUndo
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That should be handled by the IOMMU unit, not the GPU though. BTW does your CPU have one? (DMAR in dmesg)?
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Hmm.. Should have (AMD FX, aka AMD Bulldozer), but no "DMAR" in dmesg. Maybe there's a BIOS switch that I have to enable? Rebooting..
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