code spatial and temporal locality

What would be examples of spatial and temporal locality in the following code: for (i = 0; i < 20; i++) for(j=0; j<10;j++ a[i] =a[i]*j

Compute the cost of main and cache memories and hit ratio.

Explain the meaning of Tc, Cc, Tm and Cm in the following memory system specification. Tc = 100 ns Cc = 10^(-4) $/bit Tm = 1200 ns Cm = 10^(-4) $/bit a. Calculate the cost of 1 MByte of main memory using the above parameters. b. What is the cost of 1 MByte of cache memory? c. If the effective access time is 10% greater than the cache access time, what would be the hit ratio (H)?

Cache access time

A single level cache has following specifications. Access time = 2.5 ns Line size = 64 bytes Hit ratio = 0.95 Main memory uses a block transfer capability, and has first word (4 bytes) access time of 50 ns and access time for following words as 5 ns. Compute the access time when there is a cache miss? Assume that the cache waits until the line has been fetched from main memory and then re-executes for a hit. Will increasing the line size to 128 bytes, and a resulting increase in H (hit ratio) to .97, reduce the average memory access time?

Compute the main memory address format from the data given about cache and main memory.

Given that a system has 2-way set associative cache of size 8 KBytes, with 16 bytes cache lines, and a byte-addressable main memory of size 64 MBytes. What is the format of main memory address?

Compute the time period between successive refresh requests, and the size of refresh address counter for the given DRAM configuration.

A microcomputer memory is built from 64K X 1 DRAM, with DRAM cell array organized into 256 rows. Each row needs to be refreshed at least once every 4 ms, strictly on a periodic basis. 1. Give time period between successive refresh requests. 2. How long a refresh address counter do we need?