Like Tree1Likes
  • 1 Post By Elysia

What is meant by a virtual machine operating system?

This is a discussion on What is meant by a virtual machine operating system? within the Tech Board forums, part of the Community Boards category; What is the difference between a virtual machine and a virtual machine operating system? I thought all VMs were operating ...

  1. #1
    Registered User
    Join Date
    Apr 2010
    Location
    Vancouver
    Posts
    115

    What is meant by a virtual machine operating system?

    What is the difference between a virtual machine and a virtual machine operating system? I thought all VMs were operating systems. I came across the phrase here:

    VM (often: VM/CMS) refers to a family of IBM virtual machine operating systems used on IBM mainframes System/370, System/390, zSeries, System z and compatible systems, including the Hercules emulator for personal computers
    Last edited by c_weed; 01-11-2013 at 12:17 PM. Reason: added [QUOTE] tag

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
    Join Date
    Oct 2007
    Posts
    22,450
    A Virtual Machine is typically software that emulates a computer.
    A VM OS is an operating system that runs inside the VM.
    But don't quote me on that.
    Elkvis likes this.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #3
    (?<!re)tired Mario F.'s Avatar
    Join Date
    May 2006
    Location
    Portugal
    Posts
    7,412
    A Virtual Machine Operating System is a server operating system that provides virtual machine services to its clients.

    See VM/CMS.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  4. #4
    Unregistered User Yarin's Avatar
    Join Date
    Jul 2007
    Posts
    1,597
    Quote Originally Posted by Elysia View Post
    A Virtual Machine is typically software that emulates a computer.
    A VM OS is an operating system that runs inside the VM.
    But don't quote me on that.
    ...

    A class that doesn't overload all operators just isn't finished yet. -- SmugCeePlusPlusWeenie
    A year spent in artificial intelligence is enough to make one believe in God. -- Alan J. Perlis

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Looking for a Virtual Machine with this capability...
    By Jazz Master in forum Linux Programming
    Replies: 1
    Last Post: 08-30-2012, 12:18 AM
  2. Implementing a virtual machine
    By cboard_member in forum Tech Board
    Replies: 8
    Last Post: 07-17-2006, 06:15 AM
  3. Java Virtual Machine
    By geek@02 in forum Tech Board
    Replies: 1
    Last Post: 06-20-2004, 11:33 AM
  4. Creating a Virtual Machine
    By Chronom1 in forum C++ Programming
    Replies: 7
    Last Post: 10-05-2003, 11:11 AM
  5. Virtual Machine
    By confuted in forum Windows Programming
    Replies: 2
    Last Post: 04-08-2003, 02:29 PM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21