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multiprogramming

ulkaulka Member Posts: 17
how many tasks a pc can do parallelly.

e.g. a pc has resources like CPU and I/O. likewise
how many things can be done parallelly without using CPU.
and this i mean, not any simulation but actual execution of any task

""without using CPU.""

1. a I/O
2. Network access (???)
3. Screen refresh (???)
etc.
I am under impression that apart from CPU there are some dedicated processors which are ment to do certain specific task in a pc, independent of CPU. if this is right how many dedicated processors are there in a pc??

Comments

  • zibadianzibadian Member Posts: 6,349
    : how many tasks a pc can do parallelly.
    :
    : e.g. a pc has resources like CPU and I/O. likewise
    : how many things can be done parallelly without using CPU.
    : and this i mean, not any simulation but actual execution of any
    : task
    :
    : ""without using CPU.""
    :
    : 1. a I/O
    : 2. Network access (???)
    : 3. Screen refresh (???)
    : etc.
    : I am under impression that apart from CPU there are some dedicated
    : processors which are ment to do certain specific task in a pc,
    : independent of CPU. if this is right how many dedicated processors
    : are there in a pc??
    :
    There are several specialized processors, but they are designed to take care of some basic implementations based on the data provided by the CPU. For instance the GPU can periodically redraw the screen, but it still needs data from the CPU on what the screen should look like. The ethernet card processor handles the error-checking for the network, but won't access the network by itself.
    I'm not sure about the following, but even the BIOS chip cannot function without the CPU.
    As for the number of dedicated processors: that depends on the hardware. Nowadays PC have at least 3-4: GPU, audio processor, BIOS controller, ethernet processor. These are probably not full-blown processors, but more a collection of implementations burned into a hardware chip accompanied by a cache memory.
  • JakykongJakykong Member Posts: 103
    : : how many tasks a pc can do parallelly.
    : :
    : : e.g. a pc has resources like CPU and I/O. likewise
    : : how many things can be done parallelly without using CPU.
    : : and this i mean, not any simulation but actual execution of any
    : : task
    : :
    : : ""without using CPU.""
    : :
    : : 1. a I/O
    : : 2. Network access (???)
    : : 3. Screen refresh (???)
    : : etc.
    : : I am under impression that apart from CPU there are some dedicated
    : : processors which are ment to do certain specific task in a pc,
    : : independent of CPU. if this is right how many dedicated processors
    : : are there in a pc??
    : :
    : There are several specialized processors, but they are designed to
    : take care of some basic implementations based on the data provided
    : by the CPU. For instance the GPU can periodically redraw the screen,
    : but it still needs data from the CPU on what the screen should look
    : like. The ethernet card processor handles the error-checking for the
    : network, but won't access the network by itself.
    : I'm not sure about the following, but even the BIOS chip cannot
    : function without the CPU.
    : As for the number of dedicated processors: that depends on the
    : hardware. Nowadays PC have at least 3-4: GPU, audio processor, BIOS
    : controller, ethernet processor. These are probably not full-blown
    : processors, but more a collection of implementations burned into a
    : hardware chip accompanied by a cache memory.


    The BIOS chip just stores executable code run by the CPU. It's the first code executed by the CPU when the machine turns on, but it IS executed by the CPU, not by the BIOS chip itself. Close enough for all intents and purposes -- unless you're writing a BIOS, that isn't going to make any difference that I can see. Especially on modern systems running in protected mode (the BIOS generally goes unused after boot on most modern systems).

    Sincerely,
    Jakykong (Jack Mudge)
    [email protected]
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