Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030375Ab2HXUjq (ORCPT ); Fri, 24 Aug 2012 16:39:46 -0400 Received: from vapor.isi.edu ([128.9.64.64]:62617 "EHLO vapor.isi.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757675Ab2HXUjo (ORCPT ); Fri, 24 Aug 2012 16:39:44 -0400 X-Greylist: delayed 1449 seconds by postgrey-1.27 at vger.kernel.org; Fri, 24 Aug 2012 16:39:44 EDT Date: Fri, 24 Aug 2012 13:18:46 -0700 From: Craig Milo Rogers To: "Theodore Ts'o" , "H. Peter Anvin" , Brian Gerst , wbrana , Martin Nybo Andersen , linux-kernel Subject: Space-Certified CPUs and Linux Message-ID: <20120824201846.GA11418@isi.edu> References: <201208231814.21168.tweek@tweek.dk> <5037C530.3000408@zytor.com> <20120824185741.GC5094@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120824185741.GC5094@thunk.org> User-Agent: Mutt/1.5.16 (2007-06-09) X-ISI-4-43-8-MailScanner: Found to be clean X-MailScanner-From: rogers@jib3.isi.edu Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1517 Lines: 34 On 12.08.24, Theodore Ts'o wrote: > Random question. As I recall the Space Shuttle and the International > Space Station was only using 80386's because they have to be hardened > against radiation/cosmic rays, as well as all of the other mechnical > and thermal stresses associated with being in a spacecraft. Is there > any newer generation cpu's which are space-cerified at this point? The MAESTRO processor is a rad-hard-by-design variant of the Tilera architecture, intended for space applications. Linux runs on it. The Mongoose-V is a rad-hard MIPS R3000 processor. It can run VxWorks, made by Wind River (a subsidiary of Intel since 2009). http://www.synova.com/proc/mg5.html Rad-hard Power PCs are the current space workhorse. Several variants are available. NASA has run Linux on at least one of them in space, but I believe that VxWorks is more the norm. > (Of course, I'm rather doubtful that NASA would ever be willing to use > Linux on something like the Curiosity Mars Rover, but I could imagine > Linux being used in a non-mission critcal system on the ISS....) Linux has been use on scientific equipment sent to the ISS. Not, I think, on the avionics. Curiosity runs VxWorks, as do the SpaceX Falcon 9 and Dragon. Craig Milo Rogers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/