ime is 10 ns and main memory or read operation is 90%. In to d for read operations with w emory access time is
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- 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?A cache memory needs an access time of 30 ns and main memory 150 ns, what is the average access time of CPU (assume hit ratio= = 80%)?Cache memory systems are designed such that the computer first checks the L1 cache for the desired memory. If the data is there, it accesses it and is done. It only checks the L2 cache if the data is not found in the L1 cache. Likewise, the computer checks the L3 cache if the desired data is not found in the L2 cache, and finally it on only checks main memory if the data is not found in the L3 cache. Imagine a computer system with the following cache access times: L1 cache: 3 processor cycles L2 cache: 10 processor cycles L3 cache: 25 processor cycles Main memory: 100 processor cycles So, in the best case, the desired data would be immediately found in the L1 cache, which requires only 3 cycles to check. Conversely, in the worst case, the desired data would only be in main memory, which would require 138 cycles to access (3 cycles to check L1 cache + 10 cycles to check L2 + 25 cycles to check L3 + 100 cycles to access main memory). What is important, however, is the average…
- A 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?Cache requests are sent from the central processor unit to the RAM in the system. whenever a block in the main memory write buffer has to be updated.A CPU has 32-bit memory address and a 256 KB cache memory. The cache is organized as a 4-way set associative cache with cache block size of 16 bytes. What will be the number of bits in the TAG, SET, BYTE offset fields?
- PROCESS BURST TIME P1 21 P2 P3 6 P4 The average waiting time will be 10.10 18.75 None of above 16.50 3. 2.Cache access time is 30 ns and main memory access time is 100 ns. What is the total memory access time ?A computer has a cache memory and a main memory with the following features: Memory cache access time: 4 ns Main memory access time: 80 ns The time needed to load a line in cache is 120 ns. Write-through policy. If the hit ratio in this computer is 95 % and the 90% of the memory accesses are read operations, what is the average access time?