Assume that you have an L1 cache which has 8% miss rate and 0.5 ns hit time. The mainmemory access takes 100 ns including all transfer and miss handling. What is the average timefor an instruction
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Assume that you have an L1 cache which has 8% miss rate and 0.5 ns hit time. The main
memory access takes 100 ns including all transfer and miss handling. What is the average time
for an instruction
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- Design a direct mapped cache with 1 MB of data and 6-word block size and assume a 33-bit address. Select the index of the cache and must keep the calculations by showing it on your designed block diagram.A computer has a 256 KB, K-way set associative write-back data cache with block size of 32 B. The address sent to the cache controller by the processor is of 32 bits. In addition to the address tag, each cache tag directory contains 2 valid bits and 1 modified bit. If 16 bits are used to address tag. What is the minimum value of K?A two way set associative cache can host 32 KB (Kilobyte) of memory data with 16-word block. The memory system has 32 bits address bus. How many total bits does this cache have. (include 1 validation bit for each cache line, assume each word is one byte long).
- Direct Mapping Cache Problem. Given a Windows XP machine (32-bit architecture) that is byte addressable with 4 Gig memory, 16 K Cache, and a block/line size of 32bytes, calculate Tag, Index, and Offset. Show your workFor a system with single level of cache, define Tc= first-level cache access time= 0.2ns; Tm = memory access time= 0.8ns; H= first-level cache hit ratio. Compute the time for Ta read operation.Assume that a cache system has 12 bit of tag, 10 lines bit and 2 block offset bit. Determine the memory address bit organized by the cache and the number of lines in the cache. Show the working step
- In an x86-64 system, how many shorts can be stored in a cache block if your cache is 8KB (total addressable locations in cache), is 4-way set-associative, and contains 32 sets? Question 3 options: 8 16 32 64A 1 GByte RAM with 64 word/line is mapped to an 8 kLine Cache with Associative Mapping. What will the address look like?The hit rate of the memory closest to the ALU is increased from 75% to 80% in a practical cache memory hierarchy. The hit latency (or hit time) for the closest memory is 20ps, while the miss latency is 20ns. What would the expected reduction in the average memory access latency be?
- A 2-way set-associative cache consists of four sets. Main memory contains 2K blocks of 8 bytes each and byte addressing is used.Q.) Compute the hit ratio for a program that loops three times from addresses 0x8 to 0x33 in main memory. You may leave the hit ratio in terms of a fraction.A 2-way set-associative cache consists of four sets. Main memory contains 2K blocks of 8 bytes each and byte addressing is used.Q.) Show the main memory address format that allows us to map addresses from main memory to cache. Be sure to include the fields as well as their sizes.You are assigned a task to design a cache memory that will be helpful to improve the overall processor performance. How you will handle the following issues of page replacement in the cache, cache hit case, cache miss case and change of data by the user in the cache memory in designing the cache memory.