发明名称 HIGH-PERFORMANCE HASH JOINS USING MEMORY WITH EXTENSIVE INTERNAL PARALLELISM
摘要 In one embodiment, a computer-implemented method includes issuing, to a DRAM with EIP, a first group of two or more load requests to load data from a hash table constructed from hashed join-key values of a dimension table for a hash-join procedure. A second group of two or more load requests is issued. First response data is received, responsive to the first group of load requests. The first response data is processed while awaiting second response data responsive to the second group. Processing the first response data includes identifying matches between the join-key values corresponding to entries in the load requests of the first group and one or more hash buckets in the first response data. The size of the second group of load requests is selected such that a time for processing the first response data is approximately equal to the latency in receiving the second response data.
申请公布号 US2016147450(A1) 申请公布日期 2016.05.26
申请号 US201414585239 申请日期 2014.12.30
申请人 International Business Machines Corporation 发明人 Derby Jeffrey H.;Johnson Charles;Montoye Robert K.;Sreedhar Dheeraj;VanderWiel Steven P.
分类号 G06F3/06;G06F12/08 主分类号 G06F3/06
代理机构 代理人
主权项
地址 Armonk NY US