From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 28144 invoked from network); 29 Nov 2022 17:00:17 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 29 Nov 2022 17:00:17 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 27D8041C3B; Wed, 30 Nov 2022 03:00:09 +1000 (AEST) Received: from darkstar.fourwinds.com (075-142-133-254.biz.spectrum.com [75.142.133.254]) by minnie.tuhs.org (Postfix) with ESMTPS id 007A641C38 for ; Wed, 30 Nov 2022 03:00:04 +1000 (AEST) Received: from darkstar.fourwinds.com (localhost [127.0.0.1]) by darkstar.fourwinds.com (8.16.1/8.16.1) with ESMTP id 2ATH023O2562746 for ; Tue, 29 Nov 2022 09:00:02 -0800 DKIM-Filter: OpenDKIM Filter v2.11.0 darkstar.fourwinds.com 2ATH023O2562746 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fourwinds.com; s=default; t=1669741202; bh=ol1eY52n1D+4rbjmYVogw9ewlvQNDbs5eIE5S/cuaio=; h=From:To:Subject:In-reply-to:References:Date:From; b=M5Jn1wXMpxg9iZtplKo8ZFBiuKdbqVSF0NuF3i3VZV55yvtv9OrUFE/2XXFZww4UN 84Jfx8c6wUeCQ+oN1PvECooKwSD18xyddi4+vL89AiHkxwN+EjG+oZEJrOsN5AkENw sw3kgof4wJ4XuGEMvGo8lK8ZxDdCD5PEhuw63ke4= Received: from darkstar.fourwinds.com (jon@localhost) by darkstar.fourwinds.com (8.16.1/8.15.2/Submit) with ESMTP id 2ATH01H82562743 for ; Tue, 29 Nov 2022 09:00:02 -0800 Message-Id: <202211291700.2ATH01H82562743@darkstar.fourwinds.com> From: Jon Steinhart To: tuhs@tuhs.org In-reply-to: References: <7C8CADAB-65AA-4841-AFA1-569A9651E56D@planet.nl> Comments: In-reply-to "Ron Natalie" message dated "Tue, 29 Nov 2022 15:54:45 +0000." MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <2562741.1669741201.1@darkstar.fourwinds.com> Date: Tue, 29 Nov 2022 09:00:01 -0800 X-JON-SPAM: local delivery Message-ID-Hash: FH2IZDNTSZURIXJ6VD5MBODULUG26M7K X-Message-ID-Hash: FH2IZDNTSZURIXJ6VD5MBODULUG26M7K X-MailFrom: jon@fourwinds.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: First supercomputer UNIX: The Denelcor HEP (was Early multiprocessor Unix) List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Ron Natalie writes: > > BRL had commissioned the Denver Electronics Corporation (i.e., Denelcor) > to build a MIMD system called the HEP, ostensibly to do fluid dynamics I remember the presentation on this at Usenix. My thought at the time was that the HEP was a lot like what I saw when people started selling their expensive California homes and moving to Oregon to spend that money on mini-mansions. Well, in California I could only afford two columns, one dormer, and a one-car garage but now I can have 8 columns, 6 dormers, a 10 car garage, and so on. I remember thinking at the time that the HEP seemed like every piece of available hardware at the time glommed together. I'm sure that more thought went in to it than that, but that was my impression at the time. Jon