Étiquettes » MPP



  • MPP是大规模(Massive) 并行(Parallel) 处理(Processing) 计算架构
  • 常把运行SQL并行数据库的MPP简称为MPP.


  • SMP : 对称多处理, 多个CPU核 访问共享的内存,处理时延低,总吞吐量小
  • NUMA: 非一致性内存访问,多路CPU访问共享的内存,但CPU访问非本地内存时的时延与访问本地的不同.处理时延增加,吞吐量加大
  • MPP: 多个计算单元有各自的OS,内存,应用相互之间通过网络互连.协调计算.处理时延高,吞吐量很大.


  • 多个SQL数据库节点协同工作形成数据仓库系统
  • 运行在MPP系统上
  • 执行数据操作(比如查询),查询可以分散到多个SQL数据库节点上.汇总后返回给用户
  • 通常并行数据库与硬件一体化提供,软件闭源,硬件也不开放.
  • 常见的公司有Teradata, Pivtal Greenplum, HP Vertica, Netezza等
  • 77 mots de plus

Former PC leader Tim Hudak quitting provincial politics for real estate group job

TORONTO – Politicians of all stripes praised Tim Hudak on Tuesday after the former Progressive Conservative leader announced he’s quitting the legislature to become CEO of the Ontario Real Estate Association. 592 mots de plus


From SQL to NoSQL to NewSQL

History of RDBMS

Every time new technology emerged it’s evolution ended up in realisation as relational system (RDBMS). In other words, the business before adopting the stuff always demanded  221 mots de plus

Her Canna Life Q&A: Bethany Moore, National Cannabis Industry Association (NCIA)

Bethany Moore, Communications and Projects Manager, National Cannabis Industry Association (NCIA)

I swear by the combination of traditional Western medicine with the complement of the natural healing properties of cannabis.

1 065 mots de plus
Her Canna Q&A

Azure PDW is generally available

Microsoft released Azure SQL Data Warehouse accompanying  with a bouquet of impressive distinct capabilities that can be found in the press-release.

An item attracted my attention was the next: 245 mots de plus

Big Data

This is When My Job is Done

I think we as photographers enter into the industry for our own reasons.

I entered in when I was a young teenager.

I had no knowledge, no training, skill…just a camera (that had to be plugged into a wall) and a mission on my heart. 163 mots de plus

Madeline Paige Photos

Big Data ad-hoc querying with Power BI?

It has been a long time since Coudera introduced Impala as an alternative to slow MapReduce-based Hive. And has positioned new product as ad-hoc querying supporting tool (I recall Mr Isotov expressed interest in this – now I can state that only benchmark can give an answer). 380 mots de plus

Big Data