From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw1-x1132.google.com (mail-yw1-x1132.google.com [IPv6:2607:f8b0:4864:20::1132]) by sourceware.org (Postfix) with ESMTPS id D9239385BAF0 for ; Mon, 31 Oct 2022 10:59:41 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D9239385BAF0 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-yw1-x1132.google.com with SMTP id 00721157ae682-369426664f9so103910187b3.12 for ; Mon, 31 Oct 2022 03:59:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=t6CEK5ifbih84zyg4BOMp2MSYsMF5XgwrDH1anpEJ4Y=; b=BLb2PvChjzTaokTXrt5KGnnOxbYEfSWD0oI+bQUmalhfOo0Kaf72z+xT20OuNQL/dZ AhUgFxsuys+FqV8KZGnUcJuwyixO7SFwyfocyr395kJhTLQMCsaZ4jcuJ8SXi2hdzEhE Ud9gk05IsRnKk6wdcmadTM4HxB14pxXOyjpPe5CcEEAGzZu5kDymyafwoICHOgFYzEly WYj7yu+AvsLtxNy3uQ1i/MCF7xiJ56/zGbHjHPj6dxAdKuSEUKgDJp7AyD7WZR2Yr7QH tPCHB6dT/HnuatUc3y8ke5pCQYJa0vRIAcdd/typ3Pxu1oaXYEt1zykhXAepPlpzRzG7 YB7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=t6CEK5ifbih84zyg4BOMp2MSYsMF5XgwrDH1anpEJ4Y=; b=R0hqa9PJ0T1d3zymMZQ83vSINWBL9bmsDxsn0PuRFn1Ww9h4gTXDZtHdm+VHf7prcG zrTjQz7B9odo0VYlUt/ZsQNwmyEXvKPBRcgGvtgCDAvnlGLoNRy/bVI/bWGrCAdeBdJL yaRkCbbrbpfhTmVtJUPQcjQf5yjXd8UmqgGZIqB+zm2k00ojUaFTYAo6d7SnIK+DlPFp kth8d7MUIJEWWTAP3rmJrg0GxBAJGKvQBwhGwP2c3kGH5KZG+pRJiYNowXm7bseVy1wm u+661xOb9cL4s9KCN4eNKrqY8WSinDXrOI1XG2lBchGOu851Dhwoo/2mp42i9s/bpf76 z2uw== X-Gm-Message-State: ACrzQf2yFoGhr0jGowvZFUUnFdrISrkKJIIK0iKETk2Bh9E33q9vY0jQ RIyDvbXI6fEApE0VcXFTgfw/Y8wYP3JHIY6MAb8= X-Google-Smtp-Source: AMsMyM7IkhceVF32Cros65WI4t69rRkfLPh1VB/bPmnJNDj5P8FxpiI8EOVZGurQzCwShL7tGH6ixjMAR4t3ZUpVn00= X-Received: by 2002:a81:3:0:b0:36b:65b7:c9b8 with SMTP id 3-20020a810003000000b0036b65b7c9b8mr12153506ywa.473.1667213981200; Mon, 31 Oct 2022 03:59:41 -0700 (PDT) MIME-Version: 1.0 References: <4549f27b-238a-7d77-f72b-cc77df8ae36e@ispras.ru> <385bc8a8-2243-284-561f-d0b7b0fd6b3a@ispras.ru> In-Reply-To: From: =?UTF-8?B?SmFuIEh1YmnEjWth?= Date: Mon, 31 Oct 2022 11:59:29 +0100 Message-ID: Subject: Re: [PATCH] [X86_64]: Enable support for next generation AMD Zen4 CPU To: "Joshi, Tejas Sanjay" Cc: Alexander Monakov , "gcc-patches@gcc.gnu.org" , Jakub Jelinek , Richard Biener , "Kumar, Venkataramanan" Content-Type: multipart/alternative; boundary="0000000000001d33ae05ec5281e5" X-Spam-Status: No, score=0.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --0000000000001d33ae05ec5281e5 Content-Type: text/plain; charset="UTF-8" Hello, thanks for checking the performance. The patch is OK. Honza On Mon, Oct 31, 2022 at 11:39 AM Joshi, Tejas Sanjay < TejasSanjay.Joshi@amd.com> wrote: > [Public] > > Hi, > > > It is not latency. It is reciprocal throughput. For example, the > multiplication instruction has > > latency 3 and reciprocal throughput 1, and the corresponding execution > unit can accept a new > > multiplication instruction each cycle. In the .md file we are modeling > that by saying that > > multiplication occupies some unit for one cycle (but has latency 3). > > We ran spec cpu2017 INT rate with your patch for znver1 and znver3 with O2 > and Ofast. Found no performance differences from the base one. > The patch looks good. > > Thanks and Regards, > Tejas > --0000000000001d33ae05ec5281e5--