From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve McIntyre Subject: Re: What ARM hardware should we buy and where should we host it? Date: Wed, 5 Sep 2018 01:05:10 +0100 Message-ID: <20180905000510.q4pbo3ptidjb3p27@tack.einval.com> References: <87lg8izu99.fsf@elephly.net> <87tvn65unp.fsf@aikidev.net> <20180904180318.GB9769@jasmine.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:55784) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fxLK0-0000Tl-Mb for guix-devel@gnu.org; Tue, 04 Sep 2018 20:05:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fxLJx-0002qQ-8z for guix-devel@gnu.org; Tue, 04 Sep 2018 20:05:24 -0400 Received: from cheddar.halon.org.uk ([93.93.131.118]:36048) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fxLJx-0002ok-0n for guix-devel@gnu.org; Tue, 04 Sep 2018 20:05:21 -0400 Content-Disposition: inline In-Reply-To: <20180904180318.GB9769@jasmine.lan> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Leo Famulari Cc: Vagrant Cascadian , guix-devel@gnu.org On Tue, Sep 04, 2018 at 02:03:18PM -0400, Leo Famulari wrote: >On Mon, Sep 03, 2018 at 10:59:38AM -0700, Vagrant Cascadian wrote: >> One of the most promising seems to be the SynQuacer: >> >> https://www.96boards.org/product/developerbox/ >> >> With a 24-core processor, SATA, PCIe, USB 3.0, micro-atx form-factor, >> and 4 ram slots (up to 64GB, in theory, but may be picky about >> ram). > >It has 24 cores of Cortex-A53 CPUs, which are intended for "mobile" >applications (smartphones and similar). IMO, it would be great to get >more powerful processors. But, if this thing is working for Debian and >can handle sustained load on all 24 cores, that's already better than >some of the armhf boards we have. According to that Debian mailing list >post, this can do both 32 and 64-bit. Correct. >Steve, do you find the SynQuacer can handle being fully loaded for >extended periods of time? I've been doing rebuilds of the entire Debian archive for the last few weeks on a Synquacer and some other machines. It's not shown any issues at all during that period. A53 cores are not all that fast for single-threaded code, but the CPU is claimed to only hit 5W flat out on all 24 cores. It's got a large passive heat sink and a small fan in the PSU. No issues seen. -- Steve McIntyre, Cambridge, UK. steve@einval.com Getting a SCSI chain working is perfectly simple if you remember that there must be exactly three terminations: one on one end of the cable, one on the far end, and the goat, terminated over the SCSI chain with a silver-handled knife whilst burning *black* candles. --- Anthony DeBoer