Types of Computer Systems

Types of Computer Systems - usually located in an NFS(like...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Types of Computer Systems Grid A collection of inexpensive computers across the internet running the same application to accomplish a collective task. People donate idle time of their computers to be used in the grid. Example: [email protected] (Search for extra-terrestrial intelligence) + You can download a program that will analyze radio telescope data looking for "intelligent" patterns.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Types of Computer Systems Distributed Systems Applications that span multiple hosts connected by a network. Examples: World Wide Web NFS - Network File system. UNIX Remote File System. Java RMI – Java remote method invocation. Allows using server methods as if they were local. Sun RPC - Remote procedure call Advantages: Resource Sharing Computer speed up
Image of page 2
Types of Computer Systems Network File Systems A type of a distributed system Provides remote file access as if it were local. Home directories in mainframes like mentor.cc are usually located in an NFS (like champion.cc).
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: usually located in an NFS (like champion.cc). – Try: • csh> df –k- List all file systems and locations used by this computer) • chs> df –k .- List the file system used by the current directory – Examples of Network File Systems: • Types of Computer Systems • Real Time Systems – Used when there is a real time requirement in the operation. – Hard Real Time Systems : Critical tasks should be completed on time. (E.g. pacemakers or airplane navigation systems ) – Soft Real Time Systems : Critical tasks get highest priority until completed. – (E.g. Multimedia systems and computer games). – OS's like Solaris, XP, NT can provide Soft Real Time guarantee. They do not give Hard Real Time guarantees because OS's are too complex. – Hard RT systems use special hardware and simple software to give deadline guarantees. – Hardware like pacemakers or airplane navigation systems must have Hard RT guarantee....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern