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 15.7 Using High-Speed Interconnects with MySQL Cluster
 ======================================================
 

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* sci-sockets                  Configuring MySQL Cluster to use SCI Sockets
* performance-figures          Understanding the Impact of Cluster Interconnects
 
 Even before design of `NDB Cluster' began in 1996, it was evident that
 one of the major problems to be encountered in building parallel
 databases would be communication between the nodes in the network. For
 this reason, `NDB Cluster' was designed from the very beginning to allow
 for the use of a number of different data transport mechanisms. In this
 Manual, we use the term transporter for these.
 
 Currently, the MySQL Cluster codebase includes support for four
 different transporters. Most users today employ TCP/IP over Ethernet
 because it is ubiquitous. TCP/IP is also by far the best-tested
 transporter in MySQL Cluster.
 
 We are working to make sure that communication with the `ndbd' process
 is made in `chunks' that are as large as possible because this benefits
 all types of data transmission.
 
 For users who desire it, it is also possible to use cluster
 interconnects to enhance performance even further. There are two ways
 to achieve this: Either a custom transporter can be designed to handle
 this case, or you can use socket implementations that bypass the TCP/IP
 stack to one extent or another. We have experimented with both of these
 techniques using the SCI (Scalable Coherent Interface) technology
 developed by Dolphin (http://www.dolphinics.com/).
 

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