The acquisition gives Sun a software package used for technical computing tasks such as computer-aided design or electronics design.
Sun, seeing the weakness of competitor SGI, has been pushing hard into the market for high-end workstations and even has bid for a contract to build the world's fastest supercomputer. Hewlett-Packard, with new Unix workstations and servers, also is considered a strong player in the market, and IBM will announce Monday it has upgraded its own number-crunching system.
Sun, though, flush with cash from its stellar earnings, has formidable resources to devote to the market area.
Gridware's software is used to partition and prioritize jobs on different computers. The software will be included in Sun's "technical compute farm" product.
Gridware software is used by IBM, Cisco Systems and the U.S. Army.
Terms of the deal were not disclosed.