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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Yep. Was disabled in BIOS. What a reasonable default! Grrr. Now that its enabled this should drastically improve my GPU hacking productivitypic.twitter.com/QdWWln9qHk
And afaict from a quick test the performance of my GPU kernels is unchanged. Thank you so much, this was very helpful!
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Did enabling IOMMU prevent system crashes from the same GPU kernels that caused crashes before? (So far you only tweeted that it "should".)
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Hard to tell. Even before the change, in most cases an illegal memory access would just terminate the kernel w/o noticeable side effects.
End of conversation
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