What does the term "optimal computer performance" refer to?
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What does the term "optimal computer performance" refer to?
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- Suppose that you currently have a computer system with the following two characteristics:There are only three components that determine the overall performance — CPU, memory, and disk.For any given computation, the system spends 30% of the time for CPU, 40% of the time for memory,and 30% of the time for disk. Now suppose that you want to purchase a new system that improves theperformance in the following ways:The memory performance is 4 times faster over your current system, the disk performance is 5 timesfaster over your current system and everything else is the same. Using Amdahl’s Law, calculate theoverall speedup of the new system over your current system.Algorithms are analysed to optimize the use of computer resources. Listed below are the possible resources EXCEPT Select one: A.Communication bandwidth B.Computational time C.Computer memory D.Processor efficiencyA computer system has a memory access time of 120 ns. The hit rate is 96% and memory and cache accesses don' t lap and affect each other. In order AMAT to be under 12 ns, what should the maximum cache access time be?
- When virtual memory is implemented in a computing system, there are certain costs associated with the technique and certain benefits. List the costs and the benefits. Is it possible for the costs to exceed the benefits? If it is, what measures can be taken to ensure that this does not happen?The speed of the connection between a computer’s memory and its processor often determines the speed of the computer, because instructions often can be executed faster than they can be moved to the processor for execution. This connection is called the von Neumann bottleneck; it is the limiting factor in the speed of computers. True or FalseFor a processor that can decode encrypted data and system instructions, several ways have been proposed. The processor will encrypt the provided resuits. Are there any advantages to utilizing a CPU of this type? In order to achieve these levels of performance and efficiency, what are the system requirements?
- If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the fetch cycle is 40% of the processor cycle time, what memory access speed is required to implement load operations with zero wait states and load operations with two wait states?can someone help me with this problemA certain microprocessor requires either 2, 3, 4, 8, or 12 machine cycles to perform various operations. A total of 25% of its instructions require 2 machine cycles, 20% require 3 machine cycles, 17.5% require 4 machine cycles, 12.5% require 8 machine cycles, and 25% require 12 machine cycles.Q) What is the clock rate (machine cycles per second) required for this microprocessor to be a “1 MIPS” processor?
- Suppose cache has a hit rate of 0.89 and access time of 5ns, main memory has a hit rate of 0.98 and access time of 60ns, and virtual memory has an access time of 700 us (microseconds). What is the average memory access time in us?Consider a computer system with 1024 Mbytes of available memory (not used by OS). The programs OB1, JOB2 and JOB3 are submitted for execution at the same time. The details of the jobs are given in the following table. Calculate the memory utilization with and without multiprogramming. JOB1 JOB2 JOB3 Duration 5 min 18 min 7 min Memory required 154 M 128 M 384 MThe access time of the cache memory is 100ns and that of main memory 1000ns.It is estimated that S0percent of the memory requests are for read and the remaining 20 percent for write. The hit ratio for read accesses only is 0.9. A write through procedure is used. What is the average access time of the system considering only memory read cycles? What is the average access time of the system for both read cycles and write requests? What is the hit ratio taking into consideration the write cycles?