Computer architecture refers to various aspects of computer system designs which can affect compatibility, performance, and interfacing. Some issues related to computer architecture can be processor word size, memory bus size, or protocol implementation.

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Hardware. What is the difference between a port and a bank?

Especially, these days, the distinction between them is very confusing.. For example, NVidia's shared memory is 32-banked, so what they say is in one cycle, 32 data can come out at the same time... ...
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Harvard Architecture : How does it improve speed?

I don't understand the difference between Von Neumann and Harvard architectures. Let's say you have these two instructions : MOV ax, [address2] MOV bx, ax In Harvard architecture, the processor ...
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CPU clock cycle and instructions interpretation

I am new in computer architecture but I know the main topics since I had it as a course before. My question is in fact little deep and related to CPU clock cycle and how processor interpret ...
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What architectural state is saved during context switch?

What architectural state is saved during context switch? As far as I know, what is saved is the following Set of registers including PC counter TLB (If it is not flushed...) what else ? Memory? (...
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How does fabrication process and compiler quality affect CPU performance

I was reading up on my lectures and one of the slides listed down the factors affecting CPU performance , I cant understand how does fabrication process and compiler quality affect CPU performance
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How shared graphics memory works?

How does shared graphics memory work? It is my understanding that when you set how much system memory to share with the graphics controller in the BIOS, this then becomes invisible to the OS, So ...
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Why do uname -p and uname -m and arch output different architectures?

On mountain lion (late 2010) $ uname -p i386 $ uname -m x86_64 $ arch i386 So i368 (32 bit) is my processor architecture, and x86_64 (64 bit) is my machine hardware name according to the uname man ...
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Which GPUs are real Kepler cores?

With Nvidia's naming scheme I'm having a lot of trouble looking for a card that isn't a repackaged fermi or even older architecture. For example I was looking at the GT640, but the GF116 GPU is Fermi,...
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Does a virtual machine have a virtual machine monitor by definition?

Saw this post but couldn't comment: VM sandboxing- what happens? Is it possible to have a virtual machine (vm) without a virtual machine monitor (vmm)/hypervisor, or if you have one virtual machine ...
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Why does FAT32 only use 28-bits for addressing?

I was reading Why is FAT32 limited to 8 TiB? The answer to that question was that 4 bits were reserved "for future use". What advantage is there in reserving these bits? Surely register size, ...
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Trusted Computing Base, independence/can they be aggregated?

If I have a system with one component A and the TCB is {A} and I have another component B with a TCB of {B}, if I were to place the two components together would the new TCB of combined components be ...
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operations process in a computer

Is it true that all high-level operations in a computer (say, copying, pasting, web surfing, running apps etc) are all finally converted to micro-operations (say, arithmetic, logical and shift) and ...
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Isn't overall cache miss time more than direct ram access time

Suppose there is a computer with three cache's L1,L2(inside the processor) and L3(external to the cpu) and a RAM. Now suppose CPU need to access data "ABC" for some operation which is definitely ...
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Which cpus use Tri-state buffer for data bus

I must doing some research about data bus system of cpus and I have to determine which ones use Tri-state buffer and which ones use Mux system for loading common bus . ( it's my computer architecture ...
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Is ALU used for all instructions?

On wikipedia page about Von Neumann Architecture is this picture. There are a lot of similar pictures like this.(Also in a lot of articles about Von Neumann Architecture is that only ALU execute ...
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How to calculate the rate by which CPU would be slowed down due to DMA transfer?

A DMA controller transfers 16 bit words to memory using cycle stealing .The words are assembled from a device that transmits characters at the rate of 2400 characters per second . The CPU is fetching ...
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What's the internal operations for a PC to copy data from an external flash drive to an internal HD?

I was asked about the operations on how data is copied from an external storage to an internal storage in a computer. The info I could find is about how a CPU fetches data from RAM. I don't have ...
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308 views

How many bits are in the address field for a directly mapped cache?

Here is the problem I am working on: The Problem: " A high speed workstation has 64 bit words and 64 bit addresses with address resolution at the byte level. Assuming a direct mapped cache with 8192 ...
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Why is cache leakage power consumption higher than other hardware units?

Is it correct that caches (SRAM cells) have higher leakage power compared to other hardware units with the same area such as ALU? And if so, why is the case?
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Is parallelism in computer science always directly tied to the number of processor cores?

Specific to the Java programming language, would it be accurate to say that two threads can be concurrent, but can only truly be run in parallel if there are two or more cores?
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How are graphics produced on the screen?

I have been trying to get a complete answer to this for a long time and I know it is complex. For example lets say we wanted to produce the character 'H' on the screen. H is 72 in ascii or 48 in Hex ...
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ReadyBoost : How a Software Component Helps Boost the System Performance by Exploiting Flash Memory as a Cache?

One of the nice feature of windows 7 for low memory system is ReadyBoost, a software component that uses flash memory as a cache to actually speed up the the performance(Ref-Wikipedia). But If we ...