Messages in this thread | | | From | Len Brown <> | Date | Fri, 21 May 2021 19:08:23 -0400 | Subject | Re: Candidate Linux ABI for Intel AMX and hypothetical new related features |
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On Fri, May 21, 2021 at 7:06 PM Dave Hansen <dave.hansen@intel.com> wrote: > > On 5/21/21 3:07 PM, Len Brown wrote: > > My concern about synchronous allocation is that it will be very easy > > to abuse. programs and threads can ask for buffers they will never > > use. With on-demand allocation, we allocate buffers only if they are > > actually needed. > > If someone wants to abuse the on-demand allocation, they will simply > write a single bit to an AMX register. That does *NOT* mean they will > actually execute an instruction that actually uses AMX to do something > meaningful. > > In the face of abuse, I think the two approaches are very similar.
I didn't mean "abuse" in terms of malicious resource hogging. I meant "abuse" in terms of unnecessarily using resources out of laziness.
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