Annual Report

July 6th 1981 - July 4th 1982

Oxford University Computing Service


Contents

Introduction
Software and Service Changes
User Liaison
Computing Teaching Centre
Computing in the Arts
Performance and Reliability

Table 1. Machine Usage
Table 2. Usage by Subject Groupings
Table 3. Remote Site Usage
Table 4. VAX-2980 Link Usage
Table 5. Job Turnround on 2980
Table 6. Reliability and MTBF
Table 7. Response Time on 2980
Table 8. Additions to Oxford Archive


 

Introduction

This is the second of a new series of quarterly reports to the Computing Services Committee, and the first to serve the function of an annual report. The text of the report describes the progress of the Service over the past year, for t he benefit of the wider audience expected, while the tables on performance and usage update the regular figures presented to the CSC.

This year has seen major advances in several aspects of the Computing Service. The most important development has been the introduction of the full user service on the VAX 1l/780 processors. Although interim arrangements had to be made during the summer to make up for late delivery of some of the disc drives, all the equipment was installed and the service was ready for the start of the academic year in October 1981. Since then the usage of the service has increased steadily; there are now 460 registered users on the two main machines, and the Computing Teaching Centre has started to run courses on the third machine.

The policy of the Service is to provide for integrated use of the 2980 and the VAX, with the majority of the interactive work being done on the VAX and the larger batch jobs being run on the 2980 (although a large amount of interactive work is also done on the 2980). To make this possible, a high-speed link has been installed between the 2980 and each VAX; locally written software enables files to be transferred conveniently in both directions and jobs prepared on the VAX to be submitte d to the 2980 for execution. The link also provides convenient access from the VAX machines to the remote printers and graphical devices available to the 2980 users. This has been a major software project which has produced a very worthwhile end-product; the software is currently being implemented at Nottingham University and enquiries have been received from other sites.

The national service on the Lasercomp phototypesetter (on which this report was set) began at Easter 1982. Prior to this an experimental service had been run. A great deal of effort has been put into providing the service, and also into gaining experience of methods of typography and book-design, without which output of a professional standard cannot be produced.

The Cambridge Ring has continued to snake its way around the Science Area, and it now contains a kilometre of Fibre Optic Cable. This has proved extremely reliable. Participation in national networking projects has continued.

The effect of financial constraints imposed by the University has been particularly keenly felt. The major item of expenditure is staff costs; these are difficult to reduce in the short-term but efforts are being made to reduce them in the longer term. A number of vacant operational posts have been refilled only on a temporary basis in preparation for unattended operation of the 2900 service during 1983. The major items of non-staff costs, maintenance and electricity, cannot be reduced significantly without a reduction in service out of all proportion to the saving. The most valuable saving that the Service has been able to make has come about through the introduction of a strict system of paper budgeting. This scheme, introduced at the beginning of February, restricts the amount of paper that is allowed without charge to each individual user to a maximum of twenty pages per day, a special case having to be made for an allowance of greater than eight pages per day. Paper in excess of th e free allocation may be purchased from the Service. Various system changes have also been made to enable users to reduce their consumption. The intention of the scheme was to save money in the University as a whole, rather than merely transferring expend iture from the Service to the departments. The present level of consumption represents a total saving of 6500 in a full year; in addition 4500 worth of paper will be purchased by departments rather than by the Service.

The Service and ICL have both been concerned about the poor reliability of the 2980 processor, and the failure of various improvement exercises to achieve a lasting effect. More modern 2900-range equipment is much more reliable and is m uch cheaper to maintain. Approval has been received from the Computer Board to replace the 2980 central processor suite with a 2988 processor, supplied by ICL under a leasing agreement. The cost to the University will be contained within the present maint enance costs. Planning of this exercise was being completed at the end of the period covered by this report, and installation will take place during the summer vacation.

The summer vacation will also see the installation of an enhancement to the VAX filestore. Replacement of the Digital 300 megabyte drives by 300 megabyte drives and 675 megabyte Winchester drives supplied by Systems Industries Limited w ill give a 50% increase in usable file space. It is planned that some of this space will be made available later to VAX3 to support course work.

[Top]

Software and Service Changes

General

The Cambridge Ring installation now connects the VAX, PDP 1l/34 and RML 380Z development machines at the Computing Service with the departments of Nuclear Physics and Engineering Science, and with the Computing Teaching Centre. Work is under way on two Joint Network Team funded contracts, one to provide Transport Service and lower level software on the VAX together with a 380Z-based print-server, and the other to support investigations into the use of Fibre Optics. As part of the latter a one kilometre length of Fibre Optic Cable is running in the Ring, and has proved very reliable.

An RML 380Z microcomputer system has been installed in the user area to allow the transfer of data on 5-inch floppy discs to and from the main computers.

Extra remote lineprinters have been installed in the Department of Social and Community Medicine and at the offices of NAG Ltd. in Summertown.

Two Dacoll M249 raster graphics terminals have been installed in the user area as replacements for some of the Tektronix T4010 terminals. These also have a considerable range of extra facilities provided by firmware within the terminals . A suite of routines has been written to facilitate the use of these terminals from Ghost80 and Gino-F. The terminals are currently connected via Gandalf to the VAXs, but a 2980 service will soon be provided.

A Calcomp 1012 on-line drum plotter has also been installed in the user area. This may be used to produce graphical output in four colours (red, green, blue and black). The plotter offers half the resolution of the main Calcomp 1051 plo tters, but is available for 'hands-or' use and is suitable for obtaining quickly a high-quality hard copy. A Tektronix terminal is attached to the plotter so that users can preview their plot files without wasting paper. This is at present only available to VAX users, but will be made available later on the 2980.

Queuing facilities have been introduced on the Gandalf switcher/allocator such that, when all ports for a particular computer service are in use, the user will be invited to queue for the facility. This avoids the unfairness caused by the previous chan ce allocations of free ports.

Four ports have been connected from our Gandalf to the Rutherford Gandalf, which allows access to the Rutherford Appleton Laboratory, Cambridge University, Daresbury, ARPANET and QMC.

2980

This year has seen no major changes in the 2980 service. The usual large amount of background activity has gone into maintaining the system and installing new ICL releases. VME 6.13 was installed in November, and the Work Management software was introduced to handle MAC terminals. Much effort has been devoted to VME 7.01, which has not yet reached fruition, mainly because of problems handling RJE devices under JCL's new communications software. A large number of minor changes have b een made, in particular the introduction of a new DISPLAY_FILE command.

The hours during which MAC is available have been extended to allow access through the night.

The budgeting system has been enhanced to provide a free queue, in which jobs can be submitted to be run without charge to the user's account but after all chargeable work has been cleared.

In order to provide facilities common with the VAX computers, the Edinburgh Compatible Context Editor (ECCE) has been made available on the 2980. The basic facilities are identical on the two machines, but some of the more sophisticated facilities differ slightly.

New versions of PAFEC, GIMMS, GENSTAT, SPSS, TSP, STRUCTURES, MDSX and Algol68 have been implemented, as has the NAG Fortran Mark 8 library.

VAX

At the beginning of this period the VAX service was running on one machine, using 200 megabyte disc storage units as an interim measure. At the end of September, after Digital had completed delivery of the delayed 300 megabyte drives, t he users were divided between two machines and the full service commenced. Initially file transfer to and from the 2980 was by magnetic tape, but in November the file transfer service was begun, using locally written software operating a high-speed link, connected to the VAXs by interface boards provided by Edinburgh University. The service provides for job submission from the VAX to the 2980 and for file transmission in both directions. This is now heavily used.

During February an enhancement was made to VAX3 to give it capacity to support courses being run at the Computing Service and at the Computing Teaching Centre. This enhancement consisted of 32 terminal ports, 2 megabytes of memory and a dual-ported 67 megabyte disc drive.

A suite of accounting and user control software was written, and this was enhanced in February by the addition of paper budgeting.

Various minor facilities have been written, including a scheme to provide users with a workfile facility, and P-STAT, QUILL, SIR, TSP, OCP, MINITAB, Ghost80, Gino-F, GLIM, Spitbol and the NAG Fortran Mark 8 library have been implemented .

Maintenance upgrades have been made to the VMS operating system without any major difficulty or disruption to the user service.

A library has been made available for programs put forward by users as being of general benefit, and appropriate maintenance and HELP facilities are provided for this.

[Top]

User Liaison

Advisory Service

During this year two different experiments have been carried out to improve the level of advice given to users. During Michaelmas Term the advisory rota was changed to improve the continuity of advice by arranging that, of the two advis ors on the morning or afternoon sessions, one would occupy that slot for a fortnight without break. Three advisors were required to do this (one morning, one afternoon, one off). Although this method of working was popular with users and seemed to be of a dvantage with certain recurrent problems, it was decided that it was taking too much effort away from the other aspects of the work of the User Services Group, and the previous system was restored in February.

The other change was to extend the hours of the Advisory Service to cover the lunchtime period. There are now two advisors on duty from 1000 to 1200 and from 1400 to 1600, and one advisor on duty from 1200 to 1400. It is hoped to contin ue this extension of hours as long as present staffing levels are maintained.

Questionnaire

The Computing Service will, early in 1983, be preparing for the Computer Board its 'mid-term' review of the current service, and giving an assessment of the requirement for resources both in the next five years (when the next major enha ncement is due) and in the longer term.

The Service is therefore conducting a survey of computing requirements in the University and has prepared a questionnaire, which was sent to users, Users' Group representatives, Heads of Departments and members of the CSC in June. Replies will be analy sed during the summer.

Documentation

The following is a complete list of all the currently available User Guides. Those marked with an asterisk (*) were produced during the last quarter.

A l. l/2 Introduction to the Computing Service*

A2.1/3 Rules of the Computing Service

A3.1/4 Service Facilities

A4.1/2 Glossary of Terms

B1.1/7 Oxford Macro Specifications*

B2.1/8 Getting Started on the 2980*

B2.2/1 Using the 2980

B3.1/2 Editing Files

B4.1/3 The Job Journal

C2.1/1 Running Algol68 Jobs

C3.1/1 Running Fortran Jobs

D1.1/2 Files and Filestore

D2.1/2 Magnetic Tape Usage on the 2980

D3.1/2 Listing Files to Film

E2.1/2 BMDP Biomedical Computer Programs - P series

E2.2/2 SPSS - Statistical Package for Social Sciences

E2.3/1 GENSTAT- A General Statistical Program

E2.5/1 MDS(X)- Multidimensional Scaling Programs

E2.6/1 GLIM- Generalised Linear Interactive Modelling

E2.7/2 TSP- Times Series Processor

E3.1/2 GHOST Graphical Output Library

E3.2/1 SYMAP

E3.3/1 SYMVU

E3.4/1 GIMMS - General Purpose Geographical Processing System

E4.2/1 Famulus

G1.1/1 Creating and Editing Files using ECCE

G2.1/1 VAX/2980 File and Job Transfer

G4.1/1 OCP- Oxford Concordance Program*

V1.1/3 Getting Started on the VAX

V3.2/1 MINITAB - An Interactive Statistics Package

V3.3/1 TSP- Time Series Processor

V3.4/1 P-STAT- Princeton Statistical Program

V3.5/1 GLIM- Generalised Linear Interactive Modelling

Courses

Introductory courses for new users of the Computing Service are given regularly throughout the year. Each course includes practical sessions and concentrates on those parts of the system of most immediate use to new users.

'Getting Started on the VAX' was run 26 times during the year and 265 people attended. 'Getting Started on the 2980' was run 21 times and 162 people attended.

A series of presentations was given in Michaelmas Term to users who were planning to use the computer for statistical analysis. The seven presentations covered the packages MINITAB, SPSS, TSP and P-STAT as well as a general introduction to the facilities available for statistical analysis at the Computing Service.

A similar series was given in May and June. The five presentations covered SPSS, MINITAB and SIR.

A three-day course on the Scientific Information Retrieval package was given in March.

The Service gave two open presentations during the year. The first was given in December and was intended to introduce the Computing Service facilities to those who were not currently using them. This was attended by about 40 people. Th e second, aimed at existing users, was in March and covered scheduling and networking. This was also attended by about 40 users. It is proposed to repeat this pattern of an introductory presentation for non-users and a detailed presentation on a specific topic for existing users each year.

Remote Services

The main remote services have continued unchanged this year. Extra facilities have been provided to allow users to access the QMC 2980 (for use of the Distributed Array Processor) and the new Amdahl front-end processor at ULCC.

Equipment changes at ULCC and at UMRCC have been announced; the Service is studying the effects of these changes, in particular the changes in communications protocols required.

[Top]

Computing Teaching Centre

Courses

This year regular courses have been given on Algol68, Interactive Basic, Fortran, Pascal and Microprocessor Programming. Specialist courses have been given for Engineering, Inorganic Chemistry, Geology, Metallurgy and Experimental Psych ology. In addition several self-tuition courses are available on video cassette.

The Computer Graphics course has been subdivided into Mainframe Graphics and Microcomputer Graphics. The former deals with the equipment installed at the Computing Service, and the latter deals with the equipment installed around the la boratories of the University. The Microcomputer Graphics course includes the theory and practice of producing video images and transforming them to hard copy using special printers and pen plotters. Also included is the theory and practice of video colour systems and the use of the Gino-F package. The Mainframe Graphics course has concentrated on the use of the more advanced facilities available in major packages, especially the high-level features of Ghost.

The availability of microcomputer systems has enabled a new course on Advanced Microcomputer Assembly Code Programming to be given. Unfortunately, MICROSIM, of which high hopes were held, has been found not to be appropriate for this pu rpose

The numbers attending courses have fallen overall from some 1500 in earlier years to around 1200. Factors include the more limited availability of workstations with the move from offering some 40 card punches to offering some 25 VDUs et c. This will pick up next year when, with the installation of the new facilities, the sizes of a number of the classes can be increased again. However, what was lost in attendances was more than compensated for in the variety of activities. Further, the i ntroduction of external charged courses and external consultancies has assisted in the economic viability of the Centre.

During Trinity Term a series of seminars on Modern Programming Languages was given by invited speakers from within and outside the University. This covered COMAL, BCPL, PILOT, MUSIMP, C and FORTH.

External Courses and Consultancies

From the MOD scientists course held last September came a feasibility study contract which has reached completion and has involved the development of a new technique for the testing and validation of UVEPROMS. A course for County Counci l Housing Managers was given in April and further ventures are planned for the coming year.

Publications

COMPUTINC USING BASIC: An Interactive Approach by E.T. Cope, published by Ellis Horwood Ltd. in a series on Computers and their Applications.

Post-Digital Electronics by F.R. Pettit, published by Ellis Horwood Ltd. in a series on Electrical and Electronic Engineering.

Microcomputer Development Projects

The CTC has undertaken development of the microcomputer aspects of the following projects: ultrasonic flaw detector and analyser (Metallurgy), ECG data analysis (Anthropology), ECG data analysis (Pharmacology), and EEG data analysis alg orithm (Neurology). Also, advice and assistance have been given on around 100 projects.

Special CTC developments have included PSALM (an image processor for LANDSAT geographical data) and INCA (a TV image analyser).

The CTC microprocessor development equipment is available for use or loan.

Equipment

In order to run courses on VAX3, 12 direct lines and 20 Gandalf lines were installed recently. A kit of five GIGI graphical workstations has been received on indefinite loan from Digital.

After long delays the microcomputer network from RML has been installed. The hardware currently consists of four 480Z workstations, a 380Z network server, twin 8 inch floppy disc drives, a dot-matrix printer and a plotter. Three more 48 0Z workstations are to be added soon plus twin 5 inch floppy disc drives and a Winchester disc . Each workstation has 64 kilobytes RAM (8 kilobytes of which are lost to the network operating system), 40/80 character displays and high resolution graphics ( up to 640 by 192).

Software available on the network includes Algol, an assembler, Basic, Fortran and TXED (a text editor).

The network when used for interactive Basic and text-processing work is proving very satisfactory. However, Fortran is very slow. It is hoped that this will be improved by the addition of larger and faster disc drives.

Each 480Z workstation can be used as a VAX or 2980 terminal. Software has already been developed to transfer files from these computers to the network and it should be possible to transfer in the other direction soon. An assessment is b eing carried out of the possibility of using 480Z workstations as cheap graphics terminals linking up to Gino and Ghost on the VAXs.

[Top]

Computing in the Arts

Courses

During the academic year 1981-82, the courses on text analysis applications and computer methods in historical research were run once each with 24 people attending the former and 12 the latter. The Spitbol course was given once per week in Michaelmas Term, once in Hilary Term, twice in Trinity Term and twice at the beginning of the summer vacation. Each course consists of 8 sessions except for the text analysis course which consists of 16.

The extemal advisor gave lectures at the Universities of Reading, Exeter, Nottingham, Glasgow and East Anglia, and at AERE Harwell, Hatfield Polytechnic, UWIST and Kings College, London.

Oxford Concordance Program

A new release (Version 1.4) of OCP was made at Easter, clearing all known bugs. OCP has now been issued to 96 sites, covering 14 machine ranges. The sites using OCP include 45 UK Universities, 10 UK Polytechnics and 41 abroad. Of the ov erseas sites, 15 are in Europe, 9 in the United States, 7 in Canada, 5 in Australia, 2 in Japan and 1 each in New Zealand, Brazil and Israel. Ideas are being collected from users for changes and new facilities to be included in Version 2.

KDEM and Data Preparation Service

The KDEM continues to give very good service. In March the hardware was upgraded to use a faster processor and a second terminal which speeds up the editing process on difficult texts. The reading capability has been improved by new sof tware and a lexicon for English texts.

A charge for KDEM usage is now being made for external work and the income from this is being used to fund a third operator. In August 1981 the number of places on the Youth Opportunities Scheme was increased from three to five. Most of these places have been filled during the year but it was difficult to maintain a good KDEM service for the period when there was only one trainee.

Lasercomp

The LASERCHECK program is now stable and a comprehensive manual describing all its facilities has been prepared as a loose-leaf document in a ring binder. A version of LASERCHECK which only checks syntax has been issued to other sites. A formal Lasercomp service began at Easter. All existing users were asked to re-register. Lasercomp materials are now being charged for at 2 per metre of paper for academic use.

Archive

The number of texts in the Archive has been increasing at a fast rate as more texts are read in on the KDEM. A more formal issuing system has been established and a database set up to aid its organisation. It is hoped to catalogue the m aterial more comprehensively if resources permit this.

A complete list of all the texts in the Archive is available on request from the Receptionist. Recent additions are given in Table 8.

General

The International Meeting of the Association for Literary and Linguistic Computing was held in Oxford on December 17th-19th 1981 and was attended by about 70 people from 10 different countries. Many of the particip ants visited OUCS and saw demonstrations of the KDEM.

At the invitation of McGill University, Mrs. Hockey attended a one-day meeting in Montreal to discuss the formation of and requirements for a Canadian Centre for Computing in the Humanities. She was also able to attend the VII ALLC Symp osium in Pisa in June.

[Top]

Performance and Reliability

2980 Service

At the beginning of this year the performance of the 2980 was poor. Following a major board-replacement exercise in the previous period, ICL conducted a major exercise during August to provoke and eliminate intermittent faults. This, co mbined with improvements in software reliability consequent on release 6.13 of VME/B, led to reliability returning to a reasonable level in the autumn. Also during the autumn a new version of the front-end software which enabled the full store of the 7906 to be used was brought into service. This removed some buffering problems previously encountered. In December ICL conducted an exercise to modify the four high-speed drums. This was completed successfully, and there have been no significant problems sinc e. Reliability has remained fairly steady in 1982 although the system was badly affected by a partial air-conditioning breakdown in the fortnight up to June 13th and by consequent processor problems in the following week.

During the first few months of 1982 the filestore was reorganised to make better use of the discs, partly by reducing the allocation unit of files from 4 to 2 kilobytes, reducing the wastage of space at the end of each file.

There continues to be a slow upward trend in the amount of work run, but this remains within the capacity of the machine.

VAX Service

The full VAX service started in the autumn on the two main VAX 11/780 systems. This service has performed well, although not without problems. The most common faults encountered on this system have been concemed with the main memory and Digital have now informed the Service that all 11/780 memory boards are to be replaced. It is planned that this will be carried out before Michaelmas Term 1982. The tape decks have also caused problems which is a matter of concern as the rate of usage is relatively low.

The workload on the two main VAX systems is increasing slowly and the facility to use the equipment at weekends is used by a small number of users. On average there are 2400 interactive sessions and 1000 batch jobs per week. However, th ere is still a large amount of spare capacity available for the future expansion of the service. The third VAX system was brought into use during Trinity Term for some courses at the CTC.

Graphics Service

The plotting equipment has continued to function reliably. During Michaelmas Term 1981 a user-accessible device (a Calcomp 1012 plotter) was introduced. This has proved to be very popular with users.

Following the introduction of paper budgetting, the workload on the microfiche equipment greatly increased. This resulted in the associated Kodak film processor breaking down, but after a thorough overhaul the complete system functions well.

The use of the Lasercomp has increased very rapidly since the start of the user service. The actual typesetter is reliable, but the tape deck (used to input data) is unfortunately prone to break down with a resultant loss in service.

Other Services

The PDP 11/34 media conversion service is now used by a wide variety of users in the University for transfer between computers (including those outside the Computing Service) and the workload on it continues to grow. Few problems have b een experienced.

During Michaelmas Term an RML 380Z was installed to provide a service for transferring data on 5 inch floppy discs to the main machines. This has proved popular, despite the rather slow transmission rates available.

[Top]


Table 1. Machine Usage

Week Ending

2980

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

18/4/82

2161

5.87

2296

49.47

1220

15.55

682

52.12

25/4/82

3666

8.23

3817

61.20

2367

24.38

912

20.49

2/5/82

3538

7.75

3523

62.56

2511

26.01

1352

47.57

9/5/82

2736

6.81

2895

45.15

2269

21.67

1114

52.13

16/5/82

3805

8.05

3417

58.51

2710

23.69

1172

57.14

23/5/82

3504

8.25

3157

53.33

2296

25.68

871

33.60

30/5/82

3286

7.26

3127

41.26

2831

28.09

1069

61.80

6/6/82

2353

4.63

2430

36.25

2176

21.82

814

34.27

13/6/82

2885

5.92

3363

43.95

2176

23.59

926

30.21

20/6/82

2935

7.14

3601

49.88

2382

24.77

917

26.74

27/6/82

3360

7.44

4670

46.47

2487

29.77

990

45.76

4/7/82

3182

7.30

3216

51.80

2209

20.27

1040

84.71

[Top]

Table 2a. Usage by Subject Grouping on 2980 for 12-Week Period Ending 4/7/82

Group

No. of MAC Jobs

Cost of MAC Jobs

No. of

Batch Jobs

Cost of Batch Jobs

Total Cost

Weekly Income

% of Total Income Used

Filestore Alloc-ation (Mbyte)

Filestore Usage (Mbyte)

% of Filestore in Use

Chemistry

4539

32298

8580

14762

47456

11050

35

203

159

78

Physics

4747

34385

6525

13025

48049

7250

55

70

60

85

Oth Phys Sci

1219

9675

2124

3824

13661

5000

23

65

37

58

Mathematics

1741

11686

2587

4543

16251

2650

51

40

32

82

Biol &Ag Sci

4764

31747

5667

18800

50776

10325

41

279

231

83

Medical Sci

6663

49757

8032

18224

68416

12425

46

140

106

76

Social Sci

2609

19075

3345

9322

28680

9250

26

101

75

74

Humanities

1629

12010

1983

4105

16367

6310

22

112

80

72

Ext. Univ

43

396

51

77

476

700

6

7

3

35

Non-Univ

1582

14390

3403

7297

22148

3100

59

134

102

76

Service

5114

57723

4555

9398

66281

12501

44

295

297

101

Overheads

1497

15333

31945

27083

37338

108

Totals

36147

288475

78797

130460

415899

80561

39

1446

1290

82

Total Cost = Cost of MAC Jobs + Cost of Batch Jobs + Cost of Spooling

% of Total Income Used = (Total Cost * 100)/(12 * Weekly Income on last day of 12-week period)

Table 2b. Usage by Subject Grouping on VAX for 12-Week Period Ending 4/7/82

Group

No. of On-line Jobs

Cost of On-line Jobs

No. of

Batch Jobs

Cost of Batch Jobs

Total Cost

Weekly Income

% of Total Income Used

Filestore Alloc-ation (blocks)

Filestore Usage (blocks)

% of Filestore in Use

Chemistry

7958

112321

5881

34073

146403

38000

32

90300

63607

70

Physics

1431

27887

282

381

28274

9700

24

31000

17502

56

Oth Phys Sci

1514

22242

459

334

22577

7750

24

22000

11661

53

Mathematics

1526

27518

664

1132

28655

12000

20

48000

32854

68

Biol &Ag Sci

2056

36043

787

927

36971

19075

16

68250

29393

43

Medical Sci

1460

16843

751

535

17378

8850

16

29250

14368

49

Social Sci

2512

44741

861

1427

46172

19350

20

68950

36016

52

Humanities

1554

32455

223

83

32538

13000

21

37250

20487

55

Ext. Univ

12

392

0

0

392

250

13

1000

514

51

Non-Univ

1539

39484

711

2129

41627

8500

41

124500

80817

65

Service

4207

62796

320

1210

64015

27600

19

182300

124841

68

Overheads

1865

39211

3139

4784

43998

263528

Totals

27634

461933

14078

47015

509000

164075

24

702800

695588

61

% of Total Income Used = (Total Cost * 100)/(12 * Weekly Income on last day of 12-week period)

[Top]

Table 3. Remote Site Usage

For the year August 1981 to August 1982 Oxford has been allocated 3% of ULCC and 14% of UMRCC.

The %Units and %Jobs columns are respectively Oxford's percentages of the total units used and ofthejobs submitted by all users in the specified periods. They include all jobs run in the free queues.

University of London Computer Centre

Period

Units

Jobs

%Units

%Jobs

12/4/82-9/5/82

10044

226

7.48

0.83

10/5/82-6/6/82

16210

299

10.41

0.93

7/6/82-4/7/82

13318

278

8.06

1.00

The CDC 7600 at ULCC produces approximately 500 units per hour

University of Manchester Regional Computer Centre

Period

Units

Jobs

%Units

%Jobs

12/4/82-9/5/82

203312

913

25.74

7.60

10/5/82-6/6/82

211253

1067

27.24

9.16

7/6/82-4/7/82

273907

1024

32.68

10.00

The CDC 7600 at UMRCC produces approximately 1500 units per hour

University of Cambridge Computing Service

Period

Units

Jobs

%Units

%Jobs

29/3/82- 2/5/82

10136

396

0.312

0.218

3/5/82-30/5/82

7956

361

0.276

0.220

31/5/82-27/6/82

11590

417

0.417

0.287

The IBM 370/165 at Cambridge produces approximately 7500 units per hour

Queen Mary College

Period

Units

Jobs

%Units

%Jobs

12/4/82-9/5/82

51

32

0.182

0.533

10/5/82-6/6/82

78

52

0.198

0.683

7/6/82-4/7/82

31

22

0.069

0.286

The ICL 2980 and the Distributed Array Processor together produce approximately 100 units per hour.

[Top]

Table 4. VAX-2980 Link Usage

The link supports file transfer to and from the 2980, job submission from the VAX to the 2980, and transfer of files to be spooled via the 2980 to graphical devices and remote lineprinters.

Month

Into Vax

Into 2980

 

File Transfer

File Transfer

Spooler

Job Transfer

January

805

469

750

194

February

855

890

717

189

March

1168

1599

1549

723

April

703

1920

1200

472

May

1130

2017

1484

642

June

966

2094

1525

248

[Top]

Table 5. Job Turnround on 2980

This table gives the number of jobs submitted and the average wait-time (hours.minutes) for jobs in the JS1 (fast) queue during prime shift. The wait-time is the time between submission and the start of execution. The figures were sampl ed on one day each week, usually Monday, but if machine malfunction or other cause prevented the figures being obtained, the next available day's figures were used. Thus the figures given are not an average, but the tumround that can be expected on a 'nor mal' day.

Week Ending

Time

1000-1100

1100-1200

1200-1300

1300-1400

1400-1500

1500-1600

1600-1700

1700-1800

No.

Wait

No.

Wait

No.

Wait

No.

Wait

No.

Wait

No.

Wait

No.

Wait

No.

Wait

18/4/82

10

0:01

20

0:02

9

0:02

13

0:00

19

0:01

18

0:02

20

0:06

13

0:05

25/4/82

19

0:23

19

0:15

43

0:09

29

0:05

41

0:03

42

0:20

30

0:02

52

0:03

2/5/82

37

0:17

39

0:05

26

0:02

14

0:02

34

0:02

33

0:02

31

0:02

35

0:03

9/5/82

30

0:02

43

0:09

48

0:07

38

0:03

52

0:04

48

0:04

53

0:02

45

0:02

16/5/82

15

0:01

41

0:03

51

0:04

40

0:02

39

0:05

57

0:19

40

0:07

34

0:04

23/5/82

21

0:06

30

0:03

26

0:03

11

0:02

22

0:06

39

0:03

47

0:03

30

0:02

30/5/82

28

0:03

40

0:03

33

0:03

28

0:04

59

0:03

66

0:05

31

0:04

48

0:02

6/6/82

22

0:04

35

0:04

43

0:02

33

0:01

34

0:03

44

0:02

35

0:03

40

0:17

13/6/82

34

0:13

72

0:34

75

0:33

11

0:11

54

0:18

46

1:08

33

1:07

45

0:03

20/6/82

35

0:03

59

0:16

58

0:15

50

0:03

47

0:06

69

0:13

56

0:05

50

0:01

27/6/82

23

0:05

3

0:01

45

0:03

44

0:03

40

0:05

43

0:03

29

0:01

30

0:02

4/7/82

35

0:02

29

0:03

25

0:04

21

0:00

32

0:01

32

0:02

39

0:02

25

0:05

[Top]

Table 6. 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 allo w 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.

Week Ending

2980

VAX1

VAX2

 

Reliability (%)

MTBF (hrs)

Reliability (%)

MTBF (hrs)

Reliability (%)

MTBF (hrs)

18/4/82

95.99

11.32

96.79

56.00

99.86

55.42

25/4/82

98.78

32.00

99.80

168.00

99.85

168.00

2/5/82

99.59

124.50

99.69

168.00

100.00

¥

9/5/82

94.33

24.17

99.31

168.00

99.10

165.00

16/5/82

98.44

24.36

100.00

¥

99.83

165.50

23/5/82

93.52

23.61

100.00

¥

98.19

168.00

30/5/82

83.37

15.00

99.23

42.00

100.00

¥

6/6/82

74.27

19.15

72.70

166.00

72.78

168.00

13/6/82

79.61

8.12

73.60

84.00

73.22

41.50

20/6/82

89.23

6.56

100.00

¥

100.00

¥

27/6/82

95.58

12.24

99.93

168.00

100.00

¥

4/7/82

89.78

30.58

99.90

166.00

97.47

28.00

[Top]

Table 7. Response Time on 2980

This table shows the mean terminal concurrency at 15-minute intervals throughout the day, averaged over the 12-week period. The concurrency (the number of terminals logged in together) is given in figures and plotted. The right-hand col umn gives the average MAC response in the same time intervals. Again the figures are averaged over the 12-week period, and 5% of samples on either extreme are omitted to avoid periods when response was adversely affected by major hardware malfunction or w as unusually good through low usage. Thus the figures given may be taken to represent the average response in 'normal' circumstances .

Time

Concurrency

MAC Response (seconds)

10:15

16.7

                *

4.3

                     *

10:30

22.9

                      *

3.5

                 *

10:45

23.4

                      *

3.3

                *

11:00

22.1

                     *

3.0

              *

11:15

21.4

                    *

2.9

              *

11:30

25.2

                        *

3.0

              *

11:45

26.8

                          *

3.4

                *

12:00

27.3

                          *

3.0

              *

12:15

26.0

                         *

3.1

               *

12:30

22.8

                      *

2.7

             *

12:45

18.4

                 *

2.4

           *

13:00

14.1

             *

2.2

          *

13:15

13.0

            *

2.2

          *

13:30

15.1

              *

2.3

           *

13:45

16.6

                *

2.4

           *

14:00

18.4

                 *

2.8

             *

14:15

22.0

                     *

2.9

              *

14:30

24.7

                        *

3.2

               *

14:45

26.8

                          *

3.1

               *

15:00

27.8

                           *

3.3

                *

15:15

27.6

                           *

3.4

                *

15:30

25.9

                         *

3.3

                *

15:45

24.3

                       *

3.3

                *

16:00

22.2

                     *

3.1

               *

16:15

21.5

                    *

3.1

               *

16:30

22.7

                      *

2.9

              *

16:45

22.8

                      *

2.9

              *

17:00

21.1

                    *

2.6

            *

17:15

20.0

                   *

2.5

            *

17:30

18.8

                  *

2.7

             *

17:45

16.5

               *

2.7

             *

18:00

13.7

             *

2.5

            *

18:15

12.2

           *

2.2

          *

18:30

10.2

         *

2.1

          *

18:45

8.6

        *

2.1

          *

19:00

8.1

       *

2.1

          *

19:15

6.9

      *

2.2

          *

19:30

6.3

     *

1.9

         *

19:45

5.8

     *

1.8

        *

20:00

6.0

     *

1.8

        *

20:15

6.3

     *

2.0

         *

20:30

6.5

      *

1.8

        *

20:45

6.3

     *

1.8

        *

21:00

6.2

     *

1.6

       *

21:15

6.1

     *

1.5

       *

21:30

6.0

     *

1.5

       *

21:45

5.6

     *

1.6

       *

22:00

5.3

    *

1.9

         *

22:15

4.9

    *

1.7

        *

22:30

4.5

    *

1.5

       *

22:45

4.5

    *

1.5

       *

23:00

4.4

   *

1.4

      *

23:15

3.8

   *

2.1

           *

23:30

3.4

  *

1.6

       *

23:45

2.9

  *

1.7

        *

[Top]

Table 8. Additions to Oxford Archive

Du Maurier, Daphne, Rebecca

Fleming, Ian, Dr No

Hill, Susan, Gentleman and Ladies

Malamud, Bernard, The Assistant

Murdoch, Iris, The Bell

Powell, Anthony, Acceptance World

Storey, David, This Sporting Life

Barstow, Stan, A Kind of Loving

Dylan, Bob, Tarantula

Communist Affairs: Vol. 1, No. 1, January 1982

Constant, Benjamin, Adolphe

Proust, Marcel, A la Recherche du Temps Perdu

Lacroix, P.F., Poésie Peule de l'Adamawa

Ba, A.H., Kaidara

Sow, A.I., La Femme, la Vache, la Foi

Sow, A.I., Contes et Fables des Veillées

Castiglione, B., Il Cortegiano

Early Scholastic Colloquies

Littere Wallie

Pelagius, Expositions of Thirteen Epistles of St. Paul

Rhigyfarch, Life of St. David

Emanuel, Hywel D., The Latin Texts of the Welsh Law

Wade-Evans, A.W., Vitae Sanctorum Britanniae et Genealogiae

Birch, W. de G., Cartularium Saxonicum: Vols. I, II, III

[Top]