Tim Guleri has joined Greenplum's board., a start-up developing open-source business intelligence software, and the hiring of as its new chief executive. Sierra Ventures led a $15 million financing round, and Comerica Bank extended a $4 million line of credit. The funds will be used for product development, as well as sales and marketing expansion, the company said. In addition, Sierra Ventures Managing Director
of sales and services at Linux system and software specialist Penguin Computing, but he also spent 19 years at Sun Microsystems. , buying the server maker's Sun Fire X4500 "Thumper" system, which combines dual Advanced Micro Devices Opteron processors with up to 24 terabytes of storage capacity.