From: Nathan Bossart <nathandbossart@gmail.com>
To: Chiranmoy.Bhattacharya@fujitsu.com <Chiranmoy.Bhattacharya@fujitsu.com>
Cc: Devanga.Susmitha@fujitsu.com <Devanga.Susmitha@fujitsu.com>
Cc: pgsql-hackers@postgresql.org <pgsql-hackers@postgresql.org>
Cc: Ragesh.Hajela@fujitsu.com <Ragesh.Hajela@fujitsu.com>
Subject: Re: [PATCH] Hex-coding optimizations using SVE on ARM.
Date: Fri, 10 Jan 2025 09:38:14 -0600
Message-ID: <Z4E-5oQGux-2R4iL@nathan> (raw)
In-Reply-To: <OSBPR01MB26648F7B60A543069C75EC43971C2@OSBPR01MB2664.jpnprd01.prod.outlook.com>
References: <OSZPR01MB8499D4884C4541159FA00ECC8B132@OSZPR01MB8499.jpnprd01.prod.outlook.com>
<Z4AUr-Y-TPaqtg0y@nathan>
<OSBPR01MB26648F7B60A543069C75EC43971C2@OSBPR01MB2664.jpnprd01.prod.outlook.com>
On Fri, Jan 10, 2025 at 11:10:03AM +0000, Chiranmoy.Bhattacharya@fujitsu.com wrote:
> We tried auto-vectorization and observed no performance improvement.
Do you mean that the auto-vectorization worked and you observed no
performance improvement, or the auto-vectorization had no effect on the
code generated?
> The instructions in src/include/port/simd.h are based on older SIMD
> architectures like NEON, whereas the patch uses the newer SVE, so some of
> the instructions used in the patch may not have direct equivalents in
> NEON. We will check the feasibility of integrating SVE in
> "src/include/port/simd.h" and get back to you.
Thanks!
--
nathan
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To: pgsql-hackers@postgresql.org
Cc: nathandbossart@gmail.com, Chiranmoy.Bhattacharya@fujitsu.com, Devanga.Susmitha@fujitsu.com, Ragesh.Hajela@fujitsu.com
Subject: Re: [PATCH] Hex-coding optimizations using SVE on ARM.
In-Reply-To: <Z4E-5oQGux-2R4iL@nathan>
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