The server experimentation involves benchmarking and testing which programs would work best on ARM servers, and Freund said that organizations testing servers with Calxeda chips include the Massachusetts Institute of Technology and Sandia National Laboratories.
In some cases, customers have been able to run Web-enabled frameworks such as Java, LAMP (Linux, Apache server, MySQL, Python) and Ruby on Rails without changing code, Freund said. Calxeda cannot demonstrate Microsoft's .Net framework, and there's also a lot of work involved in porting legacy Fortran and C++ code, Freund said. A lot of the server software to date has been written for x86 processors, much like how a majority of the smartphone and tablet software is being written for ARM processors.
ARM processors currently support 32-bit addressing, but there is a server market for the architecture as some Web-based frameworks support 32-bit, Freund said.
Looking ahead, Calxeda also hopes to release chips with 64-bit ARM processors, Freund said, though he couldn't give a specific release date. ARM has already announced the ARMv8 64-bit architecture, and it is due to announce its first 64-bit processors later this year. ARM has said that chips from licensees based on ARMv8 will be in volume production in late 2013 or 2014.