PERFORMING DATABASE OPERATIONS USING A VECTORIZED

专利名称：PERFORMING DATABASE OPERATIONS

USING A VECTORIZED APPROACH OR ANON-VECTORIZED APPROACH

发明人：Rajkumar Sen,Sam Idicula,Nipun Agarwal申请号：US15684943申请日：20170824

公开号：US20170351670A1公开日：20171207

专利附图：

摘要：Techniques for performing database operations using vectorized instructionsare provided. In one technique, it is determined whether to perform a database operation

using one or more vectorized instructions or without using any vectorized instructions.This determination may comprise estimating a first cost of performing the databaseoperation using one or more vectorized instructions and estimating a second cost ofperforming the database operation without using any vectorized instructions. Multiplefactors that may be used to determine which approach to follow, such as the number ofdata elements that may fit into a SIMD register, a number of vectorized instructions inthe vectorized approach, a number of data movement instructions that involve movingdata from a SIMD register to a non-SIMD register and/or vice versa, a size of a cache, anda projected size of a hash table.

申请人：Oracle International Corporation

地址：Redwood Shores CA US

国籍：US

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