X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:reply-to:message-id:to:subject :in-reply-to:references:mime-version:content-type :content-transfer-encoding; q=dns; s=default; b=NESA05IfEeTsinkg B8BVgYhjRKMF7maNuU9Zo/AIG2hW7kk3izGLBCM4Gti0pxTQUAILuorDJ8YYVVMr suAo6m3tFRez+6xkuhtZ9V9vW8XmNVBnqihx9f+z/ngm4JB61dUSudzH2cdf1XNk EFeUFSrdM14ZoOMUZh018A2/6/M= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:reply-to:message-id:to:subject :in-reply-to:references:mime-version:content-type :content-transfer-encoding; s=default; bh=DXrnD59rDqPqajM8ATG4BF szCM8=; b=K1fcAO0CoemRNb+Q/3kqybkpByw5ko1qIXopuz0l9G4pT+b5HN/rRG VS9pwLIlPY69C4fSjNbTyatdGAOnUFJKtVEwmD7NQVhO0Me7hxEBble8ZwXuX+u4 gIT/OUJ8eWagrZ2b66UosbhtV7jkHn31eAzVWiRV8uyJO3opuF06w= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: Yes, score=5.8 required=5.0 tests=AWL,BAYES_99,BAYES_999,FREEMAIL_FROM,KAM_THEBAT,MIME_BASE64_BLANKS,SPF_SOFTFAIL autolearn=no version=3.3.2 X-HELO: smtp.ht-systems.ru Date: Mon, 10 Aug 2015 19:54:02 +0300 From: Andrey Repin Reply-To: cygwin AT cygwin DOT com Message-ID: <1938645615.20150810195402@yandex.ru> To: Warren Young , cygwin AT cygwin DOT com Subject: Re: Somebody having access to a Windows machine with > 64 CPUs? In-Reply-To: <6E689F0D-F196-4D1B-B6FA-782A27AF936C@etr-usa.com> References: <20150810160011 DOT GC13029 AT calimero DOT vinschen DOT de> <6E689F0D-F196-4D1B-B6FA-782A27AF936C AT etr-usa DOT com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 X-IsSubscribed: yes Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by delorie.com id t7AH5mhE003912 Greetings, Warren Young! > On Aug 10, 2015, at 10:00 AM, Corinna Vinschen wrote: >> >> for testing, I need somebody running a small test program on a machine >> with more than 64 CPUs under Windows 7 or later. > I don’t think that’s possible today. Windows 7 Professional is limited to > 2 physical processors and 256 cores, so the only way to get the result you > want is a 2x33+ core system without Hyperthreading, or a 2x17+ core system with HT. She didn't say she need an output from "Pro" version. If you're referring to "Windows 7", that's just a generation, Windows Server will suffice as well. > Source: > http://windows.microsoft.com/en-US/windows7/products/system-requirements > The lesser versions of Windows 7 also have 256-core limits, but only allow > 1 physical processor, so you’d need a 65+ core processor without HT, or 33+ with HT. > According to Newegg, the biggest ones available today are 16-core, so you > can just barely hit 64 on Win7 Pro with HT, today. > I think you need to wait another processor generation to break 64 logical cores under Windows 7. > The contemporaneous version of Server is, I believe 2008 R2, which has 4+ > socket limits in all but the Foundation version, which would let you get to > your 72 or 96 logical processor counts with today’s processors. -- With best regards, Andrey Repin Monday, August 10, 2015 19:53:00 Sorry for my terrible english...