PPT-Algorithmic Improvements for Fast Concurrent Cuckoo Hashing

Xiaozhou Li Princeton David G Andersen CMU Michael Kaminsky Intel Labs Michael J Freedman Princeton How to build a fast concurrent hash table a lgorithm and data structure engineering. Up to this point the greatest drawback of cuckoo hashing appears to be that there is a polynomially small but practically signicant probability that a failure occurs during the insertion of an item requiring an expensive rehashing of all items in th Constant Worst-Case Operations with a Succinct Representation. Yuriy. . Arbitman. . Moni. Naor Gil . Segev. Dynamic Dictionary. Data structure representing a set of words . S. From a Universe . What can Cuckoo do?. Offload computation to the server.. Offloading decisions are made by Cuckoo framework, not OS.. For now, only check whether the remote resource is reachable.. Ping the servers in the list.. COL 106. Shweta Agrawal, . Amit. Kumar. Slide Courtesy : Linda Shapiro, . Uwash. Douglas W. Harder, . UWaterloo. 12/26/03. Hashing - Lecture 10. 2. The Need for Speed. Data structures we have looked at so far. H. ashing: . Scalable and Flexible Hashing on GPUs. Farzad Khorasani, Mehmet E. . Belviranli. , Rajiv Gupta, . Laxmi. N. . Bhuyan. University of California Riverside. What Stadium hashing addresses. Faster Triangle . Listing and Set Intersection. David Eppstein. 1. , . Michael T. Goodrich. 1. ,. Michael Mitzenmacher. 2. , and Manuel Torres. 1. 1. University of California, Irvine. 2. Harvard University. H. ashing: . Scalable and Flexible Hashing on GPUs. Farzad Khorasani, Mehmet E. . Belviranli. , Rajiv Gupta, . Laxmi. N. . Bhuyan. University of California Riverside. What Stadium hashing addresses. Cyryptocurrency Project Proposal - Spring 2015. SHA Use in Bitcoin. SHA256 used heavily as bitcoin’s underlying cryptographic hashing function. Two examples (of many) are its use in the Merkle tree hash, as well as the proof of work calculation. Plan. I spent the last decade advising on numerous cases where hash tables/functions were used. A few observations on . What data structures I’ve seen implemented and where. What do developers think, were they need help. Consider a set of data with N data items stored in some data structure. We must be able to insert, delete & search for items. What are possible ways to do this? What is the complexity of each structure & method ?. In static hashing, function . h. maps search-key values to a fixed set of . B. . buckets, that contain a number of (K,V) entries.. . . Problem: d. atabases . grow . (or shrink) . with time. . If initial number of buckets is too small, and file grows, performance will degrade due to too much overflows.. Naifan Zhuang, Jun Ye, Kien A. Hua. Department of Computer Science. University of Central Florida. ICPR 2016. Presented by Naifan Zhuang. Motivation and Background. According to a report from Cisco, by 2019:. Siddhartha . Sen. and Mike Freedman. Princeton University. Shard data/ functionality. Scalable p. eer. -to-peer service. untrusted. participants. Peer-to-peer service. Clients. untrusted. participants. Listing and Set Intersection. David Eppstein. 1. , . Michael T. Goodrich. 1. ,. Michael Mitzenmacher. 2. , and Manuel Torres. 1. 1. University of California, Irvine. 2. Harvard University. Triangle Listing Problem.