From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.5-pre1 (2020-06-20) on ip-172-31-74-118.ec2.internal X-Spam-Level: X-Spam-Status: No, score=0.0 required=3.0 tests=BAYES_40,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.5-pre1 X-Received: by 2002:ac8:6d32:: with SMTP id r18mr2925631qtu.246.1601316336932; Mon, 28 Sep 2020 11:05:36 -0700 (PDT) X-Received: by 2002:a37:7c6:: with SMTP id 189mr666007qkh.275.1601316336675; Mon, 28 Sep 2020 11:05:36 -0700 (PDT) Path: eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!aioe.org!peer01.ams4!peer.am4.highwinds-media.com!news.highwinds-media.com!tr2.eu1.usenetexpress.com!feeder.usenetexpress.com!tr1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Mon, 28 Sep 2020 11:05:36 -0700 (PDT) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: google-groups.googlegroups.com; posting-host=208.114.128.70; posting-account=MRPdDAoAAADUJmZVjnYaoafXFMadSeY1 NNTP-Posting-Host: 208.114.128.70 References: <00cd3aaa-d518-43a2-b321-58d6fae70aebo@googlegroups.com> <57eb7a65-51ea-4624-b9dc-9c4dda0fee59n@googlegroups.com> <5f70fd3b$0$13541$426a74cc@news.free.fr> <5f721782$0$3256$426a74cc@news.free.fr> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <82c93c62-4ab2-415d-9f81-9b34437d3a3an@googlegroups.com> Subject: Re: is there a version of unix written in Ada From: Olivier Henley Injection-Date: Mon, 28 Sep 2020 18:05:36 +0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Received-Bytes: 2665 X-Received-Body-CRC: 3221111069 Xref: reader02.eternal-september.org comp.lang.ada:60320 List-Id: > Landed on that, interesting read: (Modular Performance Analysis and Inter= face-Based Design for Embedded Real-Time Systems)=20 > https://tik-old.ee.ethz.ch/file/2b9491dbe13085961038e4a53f7792e6/diss_wan= deler.pdf If I get this right, the idea is to have a stream of 'described compute tas= k units' and a stream of 'described compute availability/capability'. There= fore the system becomes 'dynamically adaptable' (you plug in a new faster C= PU and boom, compute units burden start to be processed at the new rate) an= d time decidable (because all capabilities can de derived for a compute uni= t type for every specific hardware compute device, we can compute the possi= ble deadline)? Would it need some modifications at the hardware level... eg. to have prope= r information about device compute capabilities? I am not sure we are talking about the same thing, but the paper is about w= hat I summarize and is, again, a very interesting read.