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Performance Evaluation
In this part, we talk about the primary attributes used to measure the performance of a computer system. Unit 2 of block 3 is totally devoted to performance assessment of parallel computer systems. The performance attributes are:
i) Cycle time (T): It is the part of time for all the operations of a computer system. It is the opposite of clock rate (l/f). The cycle time is represented in n sec.
ii) Cycles Per Instruction (CPI): dissimilar instructions takes different number of cycles for implementation. CPI is dimension of number of cycles per instruction
iii) Instruction count(Ic): No. of instruction in a program is called instruction count.
If we presume that all instructions have same count of cycles, then the total execution
Time of a program = number of cycle required by one instruction*number of instruction in the program*time of one cycle.
Hence, the execution time
T=Ic*CPI*Tsec.
Basically the clock frequency of the process is specified in MHz. Also, the processor speed is calculated in terms of million instructions per sec (MIPS).
The number of flip flops contained in IC 7490 is ? Ans. 2 flip flops contained in IC 7490.
what is the source code
Q. Rules for calling assembly subroutines from? The rules for calling assembly subroutines from C are: (i) Memory model: The calling program and called assembly programs sh
A1->A2A3 A2->A3A1|b A3->A1A2|a
Bitwise Operators Like other operators bitwise operators have rules of precedence and associativity that determine how expressions involved them are evaluated.
What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example. I/O buffer: One type of input-output requirement arises from d
A interrupt that can be turned off by the programmer is called as Maskable interrupt.
A device, usually linked to a serial port of a computer, that transfer data over regular phone lines. Modem stands modulator demodulator; it changes a digital stream of data into s
The "turn-around" time of a user job is the? Ans. Total time taken to execute the job is called "turn around" time.
Q. Signaling PVM process? int pvm_sendsig( int tid, int signum ) Transmits a signal to other PVM process. tid is task identifier of PVM process to receive signal.
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