Where's the source

The reluctance by vendors to open source was compounded by the fact that they were all using the same low level drivers provided by Mellanox, so even if they were to open source their access layer, in practice it would be useless without a low level driver. The IBAL sourceforge project currently still does not have a working open-source low level driver.

Finally, in April of 2004, several InfiniBand vendors, including Topspin, InfiniCon, Voltaire, Mellanox, and Divergenet all announced, and released portions of their respective software stacks and drivers under various open-source licenses.The openib.org website was set up by a collaboration between InfiniBand vendors, and various US DOE Labs.

In some ways, the current situation resembles that of the initial Netscape source code release. There is a lot of code available for download from various places now, but none of it is something that can be used in a production cluster or data center environment. It is, however, a good opportunity for research.