Set associative cache optimization hackerrank. Implement Least Recently used Algo.

Set associative cache optimization hackerrank. Implement Least Recently used Algo. time required to get the value of a key is constant Auxiliary Space: O (c) where c is the capacity of the Cache. , direct mapping, set associative mapping, and fully associative mapping. I have very little experience with data structures and algorithms so it's tough for me to evaluate the complexity of this problem. (I won't give away the company or any details about the exercise, since that wouldn't be fair. Then, I was assigned an interview exercise on HackerRank entitled "Set-Associative Cache Optimization". A couple of weeks ago, I had never heard of a set-associative cache. Jan 12, 2020 · While not as flexible as a fully-associative cache, a set-associative cache can avoid many of the pathological access patterns of a direct mapped cache while still being practical to implement. Jul 23, 2025 · In this article we will explore cache mapping, primary terminologies of cache mapping, cache mapping techniques I. Partition loop’s iteration space into many smaller chunks improving temporal locality • Maximize accesses to the data loaded into the cache before the data are replaced But, for all practical purposes, 8-way set associative mapping itself is as good as fully associative mapping. Then, I was assigned an interview exercise on HackerRank entitled “Set-Associative Cache Optimization”. Advantages Miss Rate DM cache size N = Miss Rate 2-way cache size N/2 8-way set associative is as effective as fully associative for practical purposes Tradeoff: higher associative cache complicates the circuit May have longer clock cycle Beware: Execution time is the only final measure! Will Clock Cycle time increase? Hill [1988] suggested hit time for Jun 17, 2025 · Learn how to optimize data retrieval in computer architecture using cache mapping techniques, including direct mapping, associative mapping, and set-associative mapping, to achieve enhanced system performance HackerRank is the market-leading coding test and interview solution for hiring developers. A compromise is to divide the cache into sets, each of which consists of n “ways” (n-way set associative). At the other extreme, we could allow a memory block to be mapped to any cache block – fully associative cache. In a direct mapped cache a memory block maps to exactly one cache block. e. A couple of weeks ago, I had never heard of a set-associative cache. ) Since I hadn't heard of such a cache, I decided to learn about it and implement one in C# before I started the assignment, just Jul 23, 2025 · Please refer LRU cache implementation using Doubly Linked List and Hashing for details Complexity Analysis of the Efficient Solution Time Complexity: put () operation: O (1) i. Start hiring at the pace of innovation! Capacity—If the cache cannot contain all the blocks needed during execution of a program, capacity misses will occur due to blocks being discarded and later retrieved. Solving code challenges on HackerRank is one of the best ways to prepare for programming interviews. – Conflict—If the block-placement strategy is set associative or direct mapped, conflict misses (in addition to compulsory and capacity misses) will occur because a block can be discarded and later retrieved if too many . The flexibility offered by higher associativity reduces the conflict misses. I just had a behavioral interview with a company and following that I got asked to write an implementation for a LRU cache with get and set. time required to insert or update new key-value pair is constant get () operation: O (1) i. gbqq bwkolx dpqf zsc ohbapt cqbeai sywnzmg hamovoox xnqbtq semh

26th Apr 2024