Softwares are often designed to run on a single processing core, but multicore chips can handle two or more tasks simultaneously. With more and more multicore chips making their way in the market there is a need for developing software that can take advantage of multicore processors as well as graphics and gaming chips. PeakStream a start-up from that sells tools for writing software that can take advantage of multicore processors as well as graphics and gaming chips.
I guess the reason Google bought this company is pretty straightforward: Google has a huge appetite for parallel computing power, and that's Peakstream's business. Google probably plans to use Peakstream's software internally. The company runs thousands of servers and is concerned about getting the maximum use out of each one. PeakStream's Web site has been shut down mysteriously from yesterday. Hey but you could check out the site via Google Cache
Some more info about PeakStream could be found here
This news is sourced via theregister