Data and Resource dependencies:
Data Dependences: Instruction i produces a result that may be used by instruction j, or Instruction j is data dependent on instruction k, and instruction … Read more
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Multivector and SIMD computers
Vector Computer: In a vector computer, a vector processor is attached to the scalar processor as an optional feature. The host computer first loads program … Read more
Parallel computer models – Multiprocessors and Multicomputers
Multiprocessor and multicomputer are distinguished by a shared common memory and unshared distributed memories. Shared Memory multiprocessor- Three most common shared memory multiprocessors models are … Read more
Flynn’s Classification
Flyns classification depends on Data stream and Instruction stream. Data stream- A data stream is the operations performed by the processor on data. A data stream … Read more
SRTF shortest remaining time first
Prob. Suppose that the given ahead processes arrive for execution at time indicated- Process Arrival Time Burst Time P1 0.0 8 P2 0.4 4 P3 1.0 … Read more
Optimal page replacement algorithm
Prob. How many page faults will occur with a reference string 0,1,7,2,3,2,7,1,0,3?There are four frames which are initially empty.Use OPTIMAL Page replacement algorithm Sol. OPTIMAL … Read more
LRU page replacement algorithms
Prob. How many page faults will occur with a reference string 0,1,7,2,3,2,7,1,0,3?There are four frames which are initially empty.Use LRU Page replacement algorithm Sol. LRU … Read more
FIFO page replacement algorithm
Prob. How many page faults will occur with a reference string 0,1,7,2,3,2,7,1,0,3? There are four frames which are initially empty. Use 1. FIFO Page replacement … Read more
Operating System Scheduler
There are three types of scheduler in Operating system. 1. Long term scheduler (LTS) LTS or Job scheduler, LTS is responsible for creating new processes and … Read more
Process State Diagram
A process passes from number of states during its life, states are as follows-1) New state2) Ready state3) Running state4) Wait state5) Termination state6) Suspend … Read more