Hyperthreading In Nutshell
The article summarizes the Hyperthreading technology as best as possible in just ten steps.
1. Hyperthreading (HT) 2007 Ford Expedition Recall term coined by Intel Cdgeneral Simultaneous Multi-Threading (SMT).
2. Hyperthreading The Company Store Duvet Cover meant Sitemap dual-core or multi-core processors like Pentium 4 Direct Lender Paycheck Loans HT or Xeon MP.
3. The technology aims at better utilization of execution units in a processor which otherwise would be idle.
4. This technique Hotel Cincinnati better than its predecessor Multithreading and Superthreading in the sense that in each instruction cycle, a processor can execute instructions Air Travel Australia Home Based Business mutliple threads.
5. Hardware implemetation of Hyperthreading is not very complex as reported by Intel “Implementing HT took only 5% more die space in Xeon”.
6. Implemeting HT needs hardware resources to be divided into Replicated(e.g. Instruction Pointers), Partitioned (e.g.Queues) and Shared (e.g. Caches)
7. For actual performance gain, your applications have to hyperthreaded i.e. you have to parallelize your code.
8. Hyperthreaded applications use Shared Memory Programming Model. Most famous Shared Memory Programming standard is OpenMP (Open specifications Boost Mobile Nextel Flip Walkie Talkie Phones Multi-Processing), an effort initiated by Silicon Graphics Inc. and now supported by major industry players. OpenMP library is available for C,C++ and Fortran on both Windows and Unix platforms. OpenMP programming constructs consists of few compiler directives for parallelizing the code.
9. There are compilers and other automating tools that support shared memory parallel programming libraries like OpenMP. Some examples are Intel C++ Compiler, Intel VTune Performance Analyzer and High-Level tools from KAI Inc.
10. Hyperthreading does not necessarily increase performance. With wrong mix of code, it can even decrease performance.
Syed Feroz Zainvi has obtained M.Tech. (Comp Sc & Engg) Leather Bar Stool from Indian Institute of Technology, Delhi (INDIA). His areas of interests are distributed computing, computer graphics and Internet Technologies. Currently, he is involved in Software Project Planning, Development and Management. His other interests include writing for magazines and contributing utility softwares on Magazine’s CDs. He also have flair for teaching computer science with new teaching methodologies.
His web-page URL is http://www.zainvi.tophnors.com