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Cern Libraries, Geneva Cm-P00087609 Cern/Fc/1374 CERN/FC/1374 CERN LIBRARIES, GENEVA Original: English 15 September, 1971 CM-P00087609 ORGANISATION EUROPÉENNE POUR LA RECHERCHE NUCLÉAIRE CERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH FINANCE COMMITTEE Hundred-and-fourteenth Meeting Geneva - 29 September, 1971 ADJUDICATION FOR REMOTE INPUT OUTPUT STATIONS FOR THE CERN CENTRAL COMPUTER SYSTEM The document CERN/FC/1340, Programme for Acquisition of Peripheral Equipment for the CERN Central Computer System, outlines the programme of development needed to build up a decentralized service based on the CDC 7600 computer. The first step in this programme consists of the acquisition of five or six Remote Input Output Stations. Each station will be based on a small computer which initially drives a card reader, line printer and a communications controller. Additional stations may be purchased later and some will be expanded by the addition of extra peripherals and high speed communications equipment as the demands on the decentralized service grow. The offers received from firms show the Modular One computer manufactured by Computer Technology Limited to be the one which most exactly meets the technical specification. The offer from Computer Technology Limited is a few percent more expensive than the two other possible machines for the initial configuration, but this is more than compensated for by the proven software and greater capability for ex• pansion of the Modular One Computer. The Finance Committee is requested to approve the award of the contract for an initial order of five or six basic Remote Input Output Stations from Computer Technology Limited at a price of approx• imately 182,000 Swiss Francs per station (excluding the card reader), with the possibility of later 71/286/5/e CERN/FC/1374 I. INTRODUCTION 1. This adjudication is the first step in the program for aquisition of peripheral equipment for the CERN central computer system, described in broad terms in the Finance Committee paper CERN/FC/1340. Its purpose is to select equipment for a number of Remote Input Output Stations (RIOS) which are to form the first stage in the process of decentralizing access to the 6400/7600 computer (CERN/FC/1247). II. SPECIFICATION OF THE RIOS SYSTEM 2. The development of the RIOS will proceed in two stages. In the first stage the RIOS will function in a manner simulating the performance of a CDC 200 User Terminal, i.e. as a simple remote station for reading cards and printing output produced by the central computers. This will enable the RIOS to be put into operation quickly with the 6400/7600 system, although initially the full speed potential of the stations will not be utilized. The second stage will involve a planned increase in the perfor• mance of the RIOS to allow them to operate at higher speeds and with a wider variety of peripheral equipment. This stage will require the development of a more advanced software (and possibly hardware) interface to the 6400/7600 system. 3. Initially it is planned to install five RIOS in Laboratory I, and probably one in Laboratory II to provide the 300 GEV project group with access to the central computer system. Later it is possible that additional simple stations will be installed, and that some special more powerful stations will be developed in experimental halls, or associated with special uses needing more powerful processing capacity and peripherals. About ten stations may finally be installed. 4. In the first stage each RIOS will consist of a small computer with 8000 words of core memory of at least 16 bits per word, and adequate processor and input-output capacity to support a line printer with a speed of either 300 or 600 lines per minute and a card reader with a minimum speed of 300 cards per minute. The station will be connected to the central system by a trans• mission line with a speed of 4800 bits per second, and provided with a teletype or typewriter as an operator control console. Software must be available to enable the RIOS to function in a manner exactly simulating a CDC 200 User Terminal so that no change will be needed to the standard CDC SCOPE operating system to be used in the 6400/7600 machines. The RIOS equipment must be reliable and robust enough to be used by untrained operating staff, and must be capable of functioning with no special power supply or air conditioning requirements. 71/286/5/ e CERN/FC/1374 Page 2 5. The first RIOS must be available including all peripherals and the CDC 200 User Terminal simulator software, not later than February 1972 (i.e. just prior to delivery of the 6400/7600). Deliveries of later RIOS will be staged through the Spring and Summer of 1972 as the 6400/7600 takes over an increasing part of the CERN computer load. 6. For the second stage it must be possible to expand the RIOS in a number of ways as requirements for an extension of distributed computing facilities develop over the next few years. Particular requirements are: - The availability of additional peripheral equipment, notably additional printers per station, medium speed magnetic tapes, paper tape reader and punch, card punch units and plotters. - The availability of fast transmission line control• lers with a synchronous speed of at least 50,000 bits per second. - The capability of supporting a CERN developed transmission line controller with a speed of about 600,000 bits per second. - Input-output and processor capability to support an expanded peripheral configuration, and in particular to support simultaneously more than one line printer together with magnetic tapes and a high speed trans• mission line. Because CERN's requirements for expanded distributed access in the future are difficult to specify in detail at present, the flex• ibility and expandability of the equipment chosen are particularly important as criteria for selection. III. THE TENDERING PROCEDURE 7. In order to survey the market end to gain information so as to be able to write a more realistic specification for the equipment, an initial call for tenders was sent on the 11th February 1971 to an extensive list of manufacturers, and 18 offers were received. After an analysis of these offers in the light of experience gained since March this year from the operation of two rented RIOS on the present central computer system, and following extensive discussions with manufacturers, a revised hardware and software specification, as outlined in section II above, was drawn up. This was sent to three manufacturers who then appeared capable of supplying the needed equipment at a reasonable price, asking for final offers. 71/286/5/e CERN/FC/1374 Page 3 8. The first call for Tenders I-1133/DD Replies were received from the following, manufacturers among the list given in the Annex. Manufacturer Offer based Nationality of on Computer mainframe manufacturer Electronics Associates Inc. (EAI) DCT 132 U.S.A. DATA 100 Model 78 U.S.A. Sprecher und Schuh Ferranti Argus 600 U.K. University Computer Corporation (UCC) COPE 38 U.S.A. Selenia GP 16 Italy Control Data Corp. (CDC) MSBT U.S.A. International Business Machines (IBM) IBM 1130 U.S.A. Telemecanique T 2000 France Philips I 880 Netherlands EMI PDI 11 U.S.A. Interdata Model 5 U.S.A. Varian 620 L U.S.A. Honeywell H 316 U.S.A. Tschäppeller Data General 1200 U.S.A. Compagnie Internationale pour l'Informatique (CII) Mitra 15 France Digital Equipment Corp. (DLC) 11 U.S.A. Hewlett Packard (HP) HP 2100 U.S.A. Computer Technology Ltd. (CTL) Modular I U.K. 9. The replies were evaluated on the basis of the follow• ing criteria. - Price - Delivery delay - Capability of the basic RIOS, together with its potential for smooth expandability and flexibility in use - Availability of proven 200 User Terminal Software - Ability of the manufacturer to demonstrate the performance of the basic RIOS including peripherals 71/206/5/e CERN/FC/1374 Page 4 Using these criteria the RIOS offered were divided into four classes: (i) Machines whose high basic cost put them out of consideration. The tender replies indicated that it would be possible to fulfil our requirements at a price close to SFr. 200.000 per RIOS. (ii) Machines of low performance and little expandability, capable of simulating a 200 User Terminal, but with little or no potential for further development. (iii) Machines with good price and capacity, but lacking in one or other of the necessary attributes listed in Section II above. (iv) Machine which appeared capable of fulfilling our require• ments as posed initially. 10. Class (i) Proposals by the following manufacturers were eliminated on grounds of price. All quoted prices in excess of SFr. 260.000 for configurations equivalent to configuration II (see para. 15 below). a) IBM b) Philips c) Telemecanique d) EMI e) Interdata f) CDC 11. Class (ii) Machines offered by the following manufacturers were eliminated because they were basically too slow and too small to support efficiently the expanded peripheral configurations descri• bed in Section II para. 6. a) EAI b) SINTRA c) Ferranti d) Selenia e) Varian f) UCC 71/286/5/e CERN/FC/1374 Page 5 12. Class (iii) The following machines were eliminated because they failed to meet at least one important requirement of the tender specification. a) Tschäppeller - The Data General Nova 1200 offered is a reasonably priced machine of good capability. However, the manufacturer was unable to offer us a fast (600 lines per minute) line printer and was also unable to make available a CDC 200 User Terminal Simulator. b) Honeywell - The H 316 offered is a machine of good capability.
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