ACM-SE 14最新文献_第4页

Discrete simulation of core utilization 堆芯利用的离散仿真

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503586

Edgar Martin, L. J. Taylor

{"title":"Discrete simulation of core utilization","authors":"Edgar Martin, L. J. Taylor","doi":"10.1145/503561.503586","DOIUrl":"https://doi.org/10.1145/503561.503586","url":null,"abstract":"The purpose of this simulation is to determine if the current computer hardware at the University of Mississippi is sufficient for projected needs and if by scheduling the use period of some users, more efficient service could be given to all users. All programs involved in the simulation are in Standard FORTRAN and are therefore easily adaptable to all computer facilities.By implementation of this simulation procedure, any computer facility can determine the efficiency of core utilization with their current scheduling procedures as compared to alternate systems. The scheduling of \"fixed\" or constant users of the system to a low use time period, can be simulated to determine if an overall increase in core utilization is possible. As an added feature this simulation procedure can forecast whether the current core capacity is sufficient for future needs. These two simulations can be tied together to allow a facility to determine how long current core capacity will be sufficient. Because these changes are simulated, increased core efficiency can be tested without disrupting normal routine. Same of the detailed results provided by this project are: Average amount of core available(under the simulated conditions); per cent of time core is full; amount of time a user must wait if core is full, number of jobs run for each time period; and statistics on the individual jobs run during the time period.The programs involved in the simulation function as follows. Jobs are placed in a core input queue at random time intervals, based on observed conditions. The jobs are then loaded in core as space permits and removed at completion times. Each job's core requirement, time in core, and origin is based on actual data but are also selected by random procedures to insure realizm.The simulation of actual conditions at the University of Mississippi proved to be extremely accurate. The results of simulations conducted have proved to be both plausible and useful.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127387113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The design and implementation of a digitally based remote cardiac monitoring system 基于数字的远程心脏监测系统的设计与实现

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503639

R. Hyatt, C. D. Burge

引用次数: 0

Design of a PDP 11/40 simulator PDP 11/40模拟器的设计

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503630

Jo Robinson

引用次数: 0

A cost analysis of multiprogramming and swap-time in a time-sharing system 分时系统中多路编程和切换时间的成本分析

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503587

P. Mills

{"title":"A cost analysis of multiprogramming and swap-time in a time-sharing system","authors":"P. Mills","doi":"10.1145/503561.503587","DOIUrl":"https://doi.org/10.1145/503561.503587","url":null,"abstract":"In a t~me-sharing system the most important aspect of performance is the response time to the user. The question of making improvements to the hardware must be evaluated in terms of how it will improve the response time to the user. The average cost of a single interaction (C I) for N active term%nals including the cost of the user's time at th~ terminal is: where CII = CS* (R+T k}/T+N*H* (R+T k)/T C S = Hardware cost for t~me period T W = Wages of user for t~me period T R = Average response time and T k = average think time R+T k = Average time for one interaction assuming additional hardware cost is ~&C S cause a decrease in the response time AR, then C12 = (Cs+ZICs)* (R-LLR+Tk)/T+N*W* (R-~+Tk)/T if ~C S <~R/CR-~R+Tk)*(Cs+N*W) then C12 < CII The above relation shows that an additional hardware cost~C is cost effective if it is less th~n AR/(R-AR+T k) times the cost of the original system plus the wages of N persons. The cost may be lease or purchase over any time period as long as the same time period is used for Cs,~C S and W. Figure I. shows the flow of a process associated with a specific terminal in a time-sharing system. Once a user completes his thinking at a terminal he responds to the system by typing input at his k~o His request for service waits on the swap queue until the code associated with his process can be read into memory. The request waits on the swap queue until all requests in front are serviced. Upon the completion of a swap operation the process must wait on the CPU queue for the use of the CPU. Once the process is given control of the CPU it willterminate by requesting input from the terminal. All queuing is first come first serve. The time for an interaction is the time to complete a full cycle in Figure I° The response time is an interaction time, minus the think time or.the swap queue time, plus the swap t_ime, plus the CPUqueue time, plus CPU time.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127835772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Financial model of UAB UAB的财务模型

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503620

G. W. Little

引用次数: 0

Industrial dynamics without DYNAMO 没有DYNAMO的工业动态

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503608

C. S. Bauer, E. G. Mendez

引用次数: 0

Structured programming and FORTRAN 结构化编程和FORTRAN

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503563

Daniel E. Jones

引用次数: 1

An analysis of the job market for biomedical computer scientists 生物医学计算机科学家的就业市场分析

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503637

F. Sias

{"title":"An analysis of the job market for biomedical computer scientists","authors":"F. Sias","doi":"10.1145/503561.503637","DOIUrl":"https://doi.org/10.1145/503561.503637","url":null,"abstract":"Biomedical Information and Computer Science is an academic area that has received much interest recently. A number of training programs have been developed around the country. This paper is an examination of the potential market for biomedical information and computer scientists.It is possible to identify a number of organizations that may potentially employ biomedical computer scientists. Included in such a list are medical schools, hospitals above a certain size, software houses, health maintenance organizations (HMO's), health-testing centers, biomedical instrument manufacturers, professional standards review organizations (PSRO's), insurance carriers, service bureaus, and academic institutions training biomedical computer scientists. An estimate of the current market is based on a summation of the various potential sub-markets. Growth statistics are determined or estimated for each market area to project future needs.A description of the nature of each potential market area is used to indicate the type of training that will best prepare a student for the various job markets. It is suggested that a combination of biology, electrical engineering and computer science will be essential for some positions while extensive training in the development of large data bases along with a biological science background will be required to meet other job descriptions.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116898649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Computer engineering at Auburn University 奥本大学计算机工程专业

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503627

B. Carroll, H. Nagle, G. R. Kane, J. Irwin

{"title":"Computer engineering at Auburn University","authors":"B. Carroll, H. Nagle, G. R. Kane, J. Irwin","doi":"10.1145/503561.503627","DOIUrl":"https://doi.org/10.1145/503561.503627","url":null,"abstract":"The computer engineering program offered by the Electrical Engineering Department of Auburn University is described. Bachelors, masters, and Ph.D. degree programs in Electrical Engineering may be pursued with specialization in computer engineering. Auburn's computer engineering program is structured to emphasize computer system design and utilization including both hardware and software considerations.A broad spectrum of courses is offered in computer engineering at both the undergraduate and the graduate level. Brief descriptions of the courses are given in the paper. Subjects covered in the courses range from traditional topics such as logic design, computer organization, and programming to various specialized topics. Computer architecture, computer graphics, coding theory, fault diagnosis, and fault-tolerant computing are but some of the specialized topics covered.Research is a fundamental aspect of any graduate program. The computer engineering research activities at Auburn are described in the paper. Graduate students, undergraduate students, and faculty participate in a wide range of sponsored and unsponsored projects. Laboratory facilities available for support of the projects will also be discussed.Another important aspect of the computer engineering program at Auburn is extension activities. Short course and conference activities oriented toward computer engineering are frequently offered by the faculty at various locations within the state of Alabama and are briefly discussed here.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123332269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A program for the correlation of specific characteristics of selected pieces of ceramicware 一个程序的特定特性的相关选定的陶瓷片

ACM-SE 14 Pub Date : 1976-04-22 DOI: 10.1145/503561.503574

H. Cartwright, J. Little

引用次数: 0