linux-kernel - Re: Candidate Linux ABI for Intel AMX and hypothetical new related features

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Date:   Wed, 14 Apr 2021 11:58:04 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Len Brown <lenb@...nel.org>
Cc:     Willy Tarreau <w@....eu>, Andy Lutomirski <luto@...nel.org>,
        Florian Weimer <fweimer@...hat.com>,
        "Bae, Chang Seok" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...el.com>, X86 ML <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, linux-abi@...r.kernel.org,
        "libc-alpha@...rceware.org" <libc-alpha@...rceware.org>,
        Rich Felker <dalias@...c.org>, Kyle Huey <me@...ehuey.com>,
        Keno Fischer <keno@...iacomputing.com>
Subject: Re: Candidate Linux ABI for Intel AMX and hypothetical new related
 features

On Tue, Apr 13, 2021 at 03:51:50PM -0400, Len Brown wrote:
> AMX does the type of matrix multiplication that AI algorithms use. In
> the unlikely event that you or one of the libraries you call are doing
> the same, then you will be very happy with AMX. Otherwise, you'll
> probably not use it.

Which sounds to me like AMX is something which should not be enabled
automatically but explicitly requested. I don't see the majority of the
processes on the majority of the Linux machines out there doing AI with
AMX - at least not anytime soon. If it becomes ubiquitous later, we can
make it automatic then.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette