Additional paper relating to item 5 of the agenda for the meeting on 29 January 1987 [CCC(87)4] (Ref Nos CHE/24, CHE/24/3)

CENTRAL COMPUTING COMMITTEE

Annual Report of the Computing Service, 1 July 1985 - 29 June 1986


Introduction
Software and Service Changes
User Liaison
Computing in the Arts
Performance and Reliability
Appendix A. Staff in post - July 1986
Appendix B. Current User Guides

Table 1. Machine Usage
Table 2. Reliability and MTBF
Table 3. ULCC Usage
Table 4. UMRCC Usage


Introduction

Last year's report closed with the appointment of the working party on the replacement of the ICL 2988. This year's events have been dominated by the activities of the working party and the preparation of the case submitted to the Computer Board.

The working party began its work in July 1985 and has continued to meet on a regular basis ever since. Its terms of reference were to make recommendations to the Computing Council on the form of the proposals to be made to the Computer Board, the Council having the formal responsibility for drawing up the submission on behalf of the General Board.

Two crucial decisions taken by the working party were to recommend the replacement of the ICL 2988 system by open tender, and to recommend that the available funding should all be devoted to a system from one manufacturer. The first of these decisions required little debate. The Computer Board's declared policy is for major procurements to be conducted by open tender, and it was agreed that even if the final outcome were to be the replacement of the ICL 2988 by a new ICL configuration, the choice should only be made after comparative evaluation of proposals from different manufacturers.

The second decision required much greater deliberation. The present service is divided, roughly half-and-half, between the ICL and the VAX systems and it could be argued that there are advantages in continuing with a dual approach - each type of system carrying the applications for which it is best suited. The counter-argument, which eventually carried the day, was that there can be considerable economy of effort (both for users and for the Computing Service) if there is only one main operating system and user interface to learn and support; this seemed particularly important at a time when ever greater resources are needed to support new activities in distributed computing in departments and colleges. The working party also took the pragmatic view that a large budget might be more attractive to suppliers if offered as a single sum than if spread over more than one type of system.

While these matters were being discussed, a considerable number of visits were paid to user departments, and the evolving model for the submission was also discussed with the Users' Group. Contacts were developed with several manufacturers, some of whom visited Oxford to give presentations on their ranges of products.

The outcome of two terms' concentrated effort by the Working Party was the acceptance by the Computing Council and the General Board of two documents, a medium-term strategic plan for the University and a draft Operational Requirement for the equipment to replace the ICL 2988 system.

These were submitted to the Computer Board at the end of March. The Board considered the University's case at its May meeting, and a Board party then visited Oxford on 21 May. Their conclusion, subsequently confirmed by the June Board meeting, was that the University's strategy should be approved. The Board authorised a very substantial capital sum for the mainframe replacement exercise, an award which was the more warmly appreciated by the University since it was announced almost simultaneously with the retrenchment in UGC funding.

The Operational Requirement was revised in minor respects in the light of comments from the Central Computer and Telecommunications Agency and the Joint Network Team. It was issued to potential suppliers on 20 June, thus formally initiating the procurement process.

This review has so far concentrated on the replacement computer system itself, but the case to the Computer Board also laid emphasis on plans to develop, with University funding, the infrastructure to provide greatly improved access to the proposed new system. The build-up of the communications network is described elsewhere in this report.

A further need identified during the period of the Working Party's activities was for provision of terminals or, preferably, microcomputers capable of terminal emulation in significant numbers in departmental and college locations. This led to the adoption by the Computing Council of a University workstation policy, under which the Council plans to make recommendations of hardware and software which will receive preferential support, and where possible funding through the Research and Equipment Committee. Initially it has been decided that the workstation policy will be based on IBM-compatible hardware, and the choice of a suitable word processing package to be recommended for primary support is to be considered during the coming long vacation.

While the preparation for choosing the next generation of equipment has been a major preoccupation, the maintenance and development of existing services has been continued in the normal fashion. As usual, these are described under succeeding headings.

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Software and Service Changes

General

One of the main activities of the Computing Service during this year has been the introduction of the Gandalf PACX2000 terminal switching system. The first node, located at the Computing Service, was installed in September 1985 and linked to the existing PACX IV switch. Computer systems and terminal ports were then gradually transferred to it, in a way designed to minimise disruption to users. A remote shelf was installed in the Museum Lodge telephone exchange building in April, and used to support Science Area terminal lines. At the end of the period of this report a second node had been installed and the fibre optic links between the nodes had been validated.

The full configuration envisaged for the end of 1986 is to consist of three nodes (at the Computing Service, the Museum Lodge and the Bodleian Library) linked in a triangle. This configuration thus contains a degree of redundancy, allowing a route from any node to any other node to be maintained even in the unlikely event of a failure of an inter-node link.

To meet the steady growth in demand for national network access, the X25 line connecting the University's packet switch exchange to the Rutherford exchange was upgraded to 48 kbit/s in September 1985.

Work on the FAMULUS77 project was completed by the autumn of 1985, and the software has been handed over to PLU at Edinburgh for distribution and maintenance.

The demand for advice on microcomputer hardware and software continues to grow. For the first time an "open house" microcomputer advisory service was introduced during the year, operating on three afternoons per week. This has proved very popular, and it is hoped to expand this area of activity when staffing resources permit.

ICL 2988

The problems with release 811 of VME which were outstanding at the end of the last report continued into the autumn of 1985. Although ICL believed the problems to be cured, they recurred in September and the site returned to a "Red Alert" state. The last outstanding problem was cleared in November, and since then the VME service has run in a stable and satisfactory manner.

Further developments were made in the use of CAFS. A version of Fortran77 that supported the CAFS Search Option (CSO) was released in October, and CAFS searching was made available from Algol68 in January 1986. New versions of various packages with CAFS support, including SPSS-X, were introduced. A modification to the disc configuration now allows all the FDS640 disc units to be accessed via the CAFS controller.

The terminals still using the MAC service through the 7906 front end processor were transferred to the X25-based NMAC service. The only remaining function of the 7906 was support of XBM printers at six locations around the University. These printers were transferred to either of VAX1 or VAX2, using direct connections and long-line drivers, and the 7906 was decommissioned in June. Use of software already in place to spool output from the 2988 to Cambridge Ring printers enabled this change to take place without affecting the user interface on the 2988 or the VAXs. The only remote printer still driven from the 2988 is a C03 service to the John Radcliffe site.

The build-up of the workload has justified the expense of running the 2988 at weekends, with some operator cover, and this has been done since early in 1986. Various changes have been made to the scheduling software to service the weekend workmix appropriately, and to the accounting software to allow off-peak working to be charged at reduced rates.

A great deal of work has been put into installing and testing coloured book software for file and job transfer. Although the existing ad hoc job submission commands remain available for the present, remote site users will now be encouraged to experiment with submitting their jobs using JTMP or to work by using remote login and file transfer via FTP.

New versions of GIMMS, CLUSTAN, ASPEX, MDSX, SIR, PSTAT, TSP, GLIM, SPSS and Mark 11 of the NAG Fortran Library, were installed. SPSS-X, with CAFS support, superseded SPSS. Version 7 of Ghost-80 has been implemented.

VAX

The main service machines were converted to version 4 of VMS in September. A great deal of effort was put into tuning and monitoring the system in anticipation of performance problems of which other sites had warned, but in practice there was little degradation observable under our somewhat atypical workload.

The disc space on VAX3 was reorganised, with many development files being transferred to a demountable volume, to make more user space available on the permanently mounted disc. This gave more scope for running courses, and for the occasional transfer from VAX1 and VAX2 of users with a requirement for large amounts of low-priority batch time.

A change was made to the login procedures to recognise the type of terminal being used. This removed many problems caused by terminals locking up when sent incorrect control sequences, a problem which had become more pronounced under VMS version 4.

FTP reached a fairly stable state during this year, but the introduction of JTMP into full-scale service led to problems affecting both FTP and JTMP. DEC could offer no immediate, or even long-term, cure for this, and could only recommend reducing the level of FTP concurrency far below that demanded by our workload. Attempts to provide a JTMP service for National Centre users who would prefer to submit jobs directly from the VAX, rather than through the 2988 as in the past, have thus been frustrated for the time being.

New versions of SAS, TSP, PSTAT, REDUCE, GLIM and MINITAB, and Mark 11 of the NAG Fortran Library, were installed. Three new packages, SIMAN, MAPLE and FSIS were introduced, and version 7 of Ghost-80 was implemented. MACSYMA ceased to work with the introduction of VMS version 4, and had to be withdrawn.

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User Liaison

Allocations

All users were required to complete new registration forms, the wording on which had been revised to take account of the Data Protection Act. This exercise provided an opportunity to remove a certain amount of dead material from the user registration system.

Agreement has been reached to extend the group allocations system to Oriental Studies, Geography, Biochemistry, Psychiatry and the Childhood Cancer Research Group. The former Forestry and Agricultural Sciences groups have been merged, as have the Politics and Sociology groups.

Courses and Seminars

The range of regular courses on the mainframe systems has been expanded this year. In particular, new VAX users are now introduced to EDT rather than to ECCE as the principal editor. Brief details of these courses are as follows:

CourseNumber of
courses
Number of
users
Getting Started with ECCE 18 160
Getting Started with EDT 16 226
Getting Started on the 2988 17 130
Getting Started on the VAX 18 274
Further Use of the 2988 5 36
SCL 5 25
Use of GHOST-80 2 24

In addition, seminars and lectures on a variety of topics were presented. A series of 9 lectures in Michaelmas Term dealt with statistical computing, including an introduction to the packages SPSS-X, Minitab and BMDP. In Hilary Term four seminars on database topics were given, two on mainframe facilities (including CAFS) and two on database software for microcomputers. Finally, in Trinity Term there was a series of seminars on assorted topics including graphics, use of JANET, use of the Lasercomp, and SASS-X for beginners.

Documentation

A list of current user guides is given at Appendix B.

Remote Sites

In general, services remained stable during the year. The main topic of interest was the discussion, following the publication of the Forty Report on advanced research computing, of the new facilities which are to become available at the National Centres. As well as the increase in vector processing capacity expected at ULCC and the Rutherford Appleton Laboratory, the arrival of new IBM-compatible front end systems at ULCC and UMRCC will be welcomed; the present Amdahl 470V/8 at ULCC is especially heavily loaded.

The CDC 7600 service at UMRCC is still heavily utilised by a number of Oxford users, and since these machines must be close to the end of their useful lives the continued existence of this service - and the nature of its replacement, if any - is currently of some concern.

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Computing in the Arts

Lasercomp

During this period the software has been relatively stable, and the workload has continued to grow. The laserprinter proofing facility was brought into service in April 1986 after a number of problems had been ironed out. Initially no charge is being made for laserprinter output, and this has led to a dramatic increase in usage.

Two meetings of external user representatives have been held, and two issues of Lasercomp News published. Following a ruling by the CVCP, external users' project codes were changed from 1 April to indicate that VAT is now charged on all such work.

MICROSET, a program which paginates Lasercheck files, has been made available at Oxford on a BBC micro system in the User Area.

Software development for non-standard alphabets has continued. A program for typesetting Egyptian hieroglyphs is now operational, using Gardiner's hieroglyphic font which was originally digitised for the Lasercomp by Oxford University Press.

New documentation has included a Lasercheck tutorial guide and a new version of the user guide to using the Lasercomp from remote sites. A seminar on publishing scholarly texts was given in Trinity Term 1986. In addition, staff participated in the BCS Electronic Publishing Group, and took part in a workshop on typesetting in Paris in November 1985. Lectures on the Lasercomp and KDEM were given at the University of Manchester, and to the conference of University Registrars at Cambridge.

Kurzweil Data Entry Machine

The KDEM service now has a staff of four, of whom two occupy established posts and two are funded by income from the service.

During the year 44 jobs were scanned. Some of these consisted of several volumes: the longest job was 115 hours, and the average length was just over 15 hours. Whereas originally output was normally sent to the user on magnetic tape, almost half the scanned texts are now sent on floppy discs and a few directly via JANET.

A paper on the KDEM was published in Literary and Linguistic Computing.

Oxford Concordance Program

36 program issues were made of which 11 were in the UK, 9 in the United States, 4 in Canada, 2 each in West Germany, Italy, Australia and Japan, and one each in Austria, South Africa, Norway and Thailand.

In September 1985 work began on version 2. For this new version the program is being completely rewritten in Fortran77. Version 2 will provide the same facilities as version 1, with some rationalisation of the commands. By the end of the period of report, the code was almost ready for user tests. A paper on version 2 was presented at the ALLC conference in Norwich. Two seminars on OCP were also given in Pisa.

Oxford Text Archive

A paper describing the Archive's facilities and outlining plans to expand its activities using CAFS was presented at a symposium in Nice in June, and subsequently published (From Archive to Database, in Brunet, L. ed, Methodes quantitatives en linguistique, Slatkine, 1986). A similar presentation was given at an international workshop on interdisciplinary sourcebanks in the historical disciplines, held in Göttingen in July. An invited lecture was given at the Instituto di Linguistica Computazionale in Pisa in September.

About fifty new texts were deposited. Most of these were produced by the KDEM service. Three important exceptions were: Dante's La Divine Commedia, which was deposited by the Instituto di Linguistica Computazionale in exchange for the works of Shakespeare; the CATSS database (parallel word-aligned texts of the Greek and Hebrew versions of the Septuagint) deposited by Prof. E. Tov; Roger Mitton's enhanced "computer-usable" version of the Oxford Advanced Learners Dictionary of Current English. The last text in particular has proved very useful to researchers from a wide variety of disciplines.

Over the year nearly two hundred texts were issued; of these about one third each went to scholars at American and British universities, the remainder going to countries around the world, including Japan, Australia and Finland.

Text searching software which uses the power of CAFS to search through large bodies of text was further developed. One user to benefit particularly from this was the OUP Shakespeare Department, who used it extensively during the preparation of their new one volume edition of the complete works. The Shakespeare Database was presented to Royalty by ICL (when CAFS received a Queens Award for Industry), but was not, despite press reports to the contrary, in fact much help in establishing the authorship of "Shall I die".

General

The Computing Service has participated in the experimental humanities computing bulletin board set up by the Office for Humanities Communication at Leicester.

An invited paper on the Oxford facilities for computing in the humanities was presented at a conference in Toronto in April 1986. Seminars and lectures were also given at Thames Polytechnic, Durham University, the Norwegian Computing Centre for the Humanities, Bergen University, and the Universities of Waterloo, Saskatchewan and Calgary.

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Performance and Reliability

Mainframe services

Interruptions to service have in the main been attributable to software problems rather than hardware faults. The problems with VME release 811 on the ICL 2988 and with communications software on the VAXs have already been described above. Apart from these, there have been a few incidents involving fixed disc units on both systems, with an FDS640 being replaced in July 1985 on the 2988. Memory errors on VAX1 and VAX2 were troublesome for a period in August 1985, but these were eradicated and have not recurred.

Other equipment

The fire alarm system gave trouble at two points during the year, but the most recent repair appears to have cured the problem and it is hoped that there will be no further incidents of this kind. Two days' service were lost owing to the escape of water into the machine room underfloor void during the Christmas-New Year closedown period. A monitoring system is to be installed in the machine rooms to detect environmental failures of this nature at an earlier stage.

The intermittent fault on the Lasercomp tape deck was still present at the start of the year, but this has finally been overcome. The Lasercomp service also suffered minor but unfortunate interruptions, firstly because of accidental damage to the film processor and secondly through the failure simultaneously of two independent suppliers to deliver new stocks of bromide paper on time.

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Appendix A. Staff in post - June 1986

DirectorA G Robiette
Deputy DirectorC E Phelps
Director's SecretaryMrs D Clarke
 
Development Group
Group Manager A R Gay
Software Section Manager J R Douglas
Hardware Section Manager G W Litchfield
Group Secretary Mrs M A Turner
Programming Staff M D Austen
Ms J A Burnell-Higgs
C Curran
R F Hufton
C J Hurrell
K A Lewis
M K Malik
D A Miles
D W Rischmiller
J T Thomason
R F Treweek
Mrs S E Treweek
Network ControllerG B Lescott
Technical StaffK A George
G C Payne
C P Tester
 
User Services Group
Group ManagerMrs L Hayes
User Liaison ManagerMrs C Bateman
Computing in the ArtsMrs S M Hockey
Group SecretaryMs R L Beesley
Programming Staff:L D Burnard
Ms E M Crutch
Mrs G Edwards
Mrs C M Griffin
P Griffiths
R L Hutchings
J M R Martin
Ms L C Munro
W Phillips
R L D Rees
P S Salotti
E W Taylor
P M Tickler
KDEM ServiceMrs G E Cooper
Ms A E Holl
Ms G A Jackson
Ms A B Sabin
Library Assistant Ms M E Franks
Budgets Office Ms C Windridge
Receptionists Mrs J E Kearley
Mrs M J Smith
Technical Typist Mrs E C Hussey
 
Operations Group
Operations Manager L G Fouweather
Microsystem Support S E Evans
A E Lawrence
L P Newton
Assistant Operations Manager R I Saxton
Shift Supervisors D C Hastings
B H Martin
Operations Staff Ms J Barker
T J Barrett
A P Bourton
R Cousins
Ms C Fox
Ms R Jolly
A R Knight
Mrs A F Martin
Mrs M Murphy
D Mullings
Mrs A M Rumble
N J Stevens
Ms D R Titcombe
Operations Assistant Ms D Williams
 
Administration
AdministratorD Lucas
Administrative Assistant Mrs L A Mills
Print Unit A C Hunter
Mrs D Peters
General and Cleaning Staff A McShane
Ms J Mann
Mrs J M Towner
W J Towner
Mrs J H Waller

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Appendix B. Current User Guides

A1.1 Introduction to the Computing Service

A4.1 Glossary of 2988 Terms

A4.2 Glossary of VAX Terms

A5.1 2988 Budgeting, Accounting and Scheduling

A5.2 VAX Budgeting, Accounting and Scheduling

B1.1 Oxford Command Specifications

B2.1 Getting Started on the 2988

B2.2 Further Use of the 2988

B2.3 SCL

B3.1 Editing Files (the ICL Editor)

C2.1 Running Algol68 Jobs

C3.1 Running FORTRAN Jobs

E1.1 PDS: Personal Data System

E2.1 BMDP Statistical Software

E2.5 MDS(X) - Multidimensional Scaling Programs

E2.8 CLUSTAN: Cluster Analysis Package

E2.9 SPSS-X

E3.2 SYMAP

E3.4 GIMMS - General Purpose Geographic Processing System

E3.5 ASPEX

F1.1 The National Computer Centres: ULCC and UMRCC

F2.1 VAX Network Commands

F3.1 Using the PAD

G1.1 Creating and Editing Files using ECCE

G1.2 Getting Started with ECCE

G2.1 VAX/2988 File and Job Transfer

G2.3 The Oxford File Archive

G2.4 Magnetic Tape on the 2988 and VAX

G2.5 EPS 2700 Laser Printer

G2.6 The Qume Printer

G3.1 Spitbol

G4.1 OCP - Oxford Concordance Program

G4.2 QUILL

G4.3 P-STAT - Princeton Statistical Program

G4.4 GENSTAT - A General Statistical Program

G4.5 TSP - Time Series Processor

G4.6 GLIM - Generalised Linear Interactive Modelling

G5.1 NAG Library

G5.2 GHOST80 Graphics at OUCS

G5.3 GINO-F Graphics at OUCS

M2.1 CAFS: Content Addressable File Store

M2.4 FACSIMILE

M2.5 MACSYMA: An Algebraic Manipulation Package

M2.6 REDUCE

M2.7 SIMAN

M2.10 Maple

M3.1 Calcomp-on-GHOST80 on the VAX and 2988

M4.2 Standards for Magnetic Tape Transfer

M4.4 Use of the Monotype Lasercomp Typesetter from Remote Sites

M4.5 Facilities for Reading non-VAX Files on the VAX

M5.2 Trident TT100 Brown Terminals

M5.5 Dacoll M249 Graphics Terminals

M5.6 The Calcomp 1012 Plotter

M5.7 ICL 7561 Orange Terminals

M5.8 Tektronix T4010 Graphics Terminals

M5.10 Datatype X5A Colour Graphics Terminals

M5.11 BBC Micro Terminals

M5.13 Hewlett Packard 7475 Plotter

M6.2 Magnetic Media Conversion Service

M6.3 File Transfer between an Apple and a VAX, using Kermit

M6.4 Cifer File Transfer for CP/M Discs to the VAX, using Kermit

M6.5 File Transfer Using the Cambridge Ring (reading CP/M discs on 380Z)

M6.6 File Transfer between an IBM PC and a VAX using Kermit

M6.7 File Transfer between an RML 380Z and a VAX, using Kermit

M7.1 Cards and Paper Tape

V1.1 Getting Started on the VAX

V1.2 Getting Started with EDT

V2.1 Using the VAX

V3.1 SAS: Statistical Analysis System

V3.2 MINITAB - An Interactive Statistics Package

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Table 1. Machine Usage

4-Weeks Ending 2988 VAX
Interactive Batch Interactive Batch
No. of Jobs CPU Hours No. of Jobs CPU Hours No. of Jobs CPU Hours No. of Jobs CPU Hours
28/7/85 11229 90.96 9390 464.44 22487 258.57 7523 788.53
25/8/85 12154 113.82 11182 573.10 20173 242.56 5420 675.67
22/9/85 10382 89.78 8993 516.33 18817 233.65 6330 805.17
20/10/85 11410 95.68 9392 503.00 24138 300.34 7201 967.01
17/11/85 12837 106.33 10078 495.39 25550 301.17 7328 765.91
15/12/85 12216 102.52 10427 554.94 25139 306.96 6650 659.54
12/1/86 4998 39.65 4594 246.94 12873 174.84 4726 413.56
9/2/86 12554 99.06 9727 573.67 25215 324.58 7886 659.51
9/3/86 11632 94.88 9940 601.87 27491 349.97 8676 712.49
6/4/86 9845 87.27 8098 536.06 20205 263.56 5874 713.60
4/5/86 10251 103.12 8406 615.44 23886 308.74 7282 861.92
1/6/86 9884 91.81 9196 794.46 24705 294.77 6131 911.77
19/6/86 11559 104.26 10333 759.43 24571 305.19 7456 898.15

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Table 2. Reliability and Mean Time Between Failures

Reliability is the percentage of scheduled productive time (i.e. switched-on time not allocated to maintenance, development or backup) during which the machine is fault-free. Weighting factors are applied to equipment failures that allow the service to continue with impaired performance. Mean Time Between Failures (MTBF) is the mean time between incidents requiring a system reload to take place.

4-Weeks 2988 VAX1 VAX2 VAX3
Ending Reliability (%) MTBF (hrs) Reliability (%) MTBF (hrs) Reliability (%) MTBF (hrs) Reliability (%) MTBF (hrs)
28/7/85 91.63 22.93 98.03 96.00 98.76 168.00 98.03 96.00
25/8/85 98.02 27.29 97.98 672.00 95.24 112.00 99.85 336.00
22/9/85 98.33 50.82 99.56 224.00 96.54 74.67 99.78 168.00
20/10/85 98.64 68.54 94.57 168.00 99.40 134.40 99.57 224.00
17/11/85 99.26 158.86 99.14 74.67 99.53 96.00 94.66 67.20
15/12/85 97.54 79.78 91.80 168.00 95.30 134.40 96.24 56.00
12/1/86 81.74 327.07 95.23 672.00 95.23 336.00 95.23 336.00
9/2/86 99.60 161.43 99.62 112.00 99.53 134.40 97.23 84.00
9/3/86 98.39 75.08 98.89 61.09 99.76 112.00 99.90 134.40
6/4/86 98.61 57.14 96.91 51.69 97.92 84.00 97.01 84.00
4/5/86 97.45 131.38 99.59 74.67 99.62 168.00 99.97 672.00
1/6/86 98.10 69.81 99.27 112.00 99.47 336.00 99.07 336.00
19/6/86 98.92 224.00 99.88 672.00 99.60 134.40 98.63 168.00

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Table 3. ULCC Usage

4-Weeks Amdahl Cray
Ending Jobs %Jobs Units %Units Jobs %Jobs Units %Units
28/7/85 1643 2.4 2506.7 2.4 285 1.8 34260.0 7.4
25/8/85 724 1.2 458.2 0.5 178 1.4 15302.0 3.3
22/9/85 366 0.7 201.5 0.2 163 1.4 5258.7 1.2
20/10/85 442 0.7 363.5 0.4 151 1.1 6594.9 1.8
17/11/85 1013 1.4 4495.1 4.1 366 2.4 11311.8 2.3
15/12/85 1226 1.7 7925.1 7.3 379 2.0 10451.8 2.3
12/1/86 869 2.0 1900.7 2.0 263 2.6 9517.5 2.2
9/2/86 1691 2.3 7936.8 6.1 511 3.2 25610.5 5.6
9/3/86 1633 2.1 3401.2 2.8 585 3.2 21855.1 4.8
6/4/86 1298 2.1 3412.7 2.9 596 3.5 14395.7 3.2
4/5/86 1098 1.7 2474.9 2.3 536 3.2 12003.9 2.7
1/6/86 884 1.4 1419.4 1.4 291 1.6 9972.5 2.2
19/6/86 1031 1.4 1965.3 1.7 614 3.5 6725.5 1.6

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Table 4. UMRCC Usage

4-Weeks CDC 7600 Cyber 176 Cyber 205
Ending Jobs %Jobs Units %Units Jobs %Jobs Units %Units Jobs %Jobs Units %Units
29/7/85 530 2.6 173276 29.4 21 0.1 948 0.1 340 3.7 279502 15.1
27/8/85 573 2.7 239247 27.9 170 0.6 88721 12.8 239 2.7 191545 11.1
23/9/85 358 1.8 160319 21.6 70 0.3 10534 1.5 225 2.8 156143 8.7
21/10/85 654 2.7 177977 27.8 0 0.0 0 0.0 320 3.1 200203 9.8
18/11/85 430 6.3 133907 26.5 34 0.3 3674 1.0 337 5.5 219305 12.2
16/12/85 520 7.1 141959 22.8 19 0.2 2860 0.4 370 6.5 196628 12.1
13/1/86 251 6.5 72492 11.5 16 0.3 2863 0.6 158 4.6 103165 10.4
10/2/86 293 4.5 112555 12.7 5 0.04 564 0.1 178 2.5 80195 4.5
9/3/86 360 5.0 142680 15.9 12 0.1 504 0.1 103 1.6 35624 2.3
6/4/86 294 4.8 131014 17.0 4 0.04 321 0.05 133 2.6 26372 2.2
4/5/86 458 5.4 197018 25.9 34 0.3 2019 0.3 433 7.8 48167 3.5
2/6/86 323 5.5 149231 24.8 36 0.4 1721 0.3 222 3.7 50563 3.2
30/6/86 390 6.4 191177 27.2 81 0.8 15752 2.2 302 4.7 78960 4.4

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