sentences:  For the San Francisco sequence, the producers researched lots of films and photographs for an accurate depiction of the city, and filmed animator Line Andersen, who had a similar body type to Ginormica—tall, thin, and athletic-looking—walking alongside a scale model of San Francisco, to capture better how a person not comfortable with being too big with an environment would walk around it.Ed Leonard, CTO of DreamWorks Animation, says it took approximately 45.6 million computing hours to make "Monsters vs. Aliens", more than eight times as many as the original "Shrek".Several hundred Hewlett-Packard xw8600 workstations were used, along with a 'render farm' of HP ProLiant blade servers with over 9,000 server processor cores, to process the animation sequence.