Filmmaker Tom Tykwer revealed in January 2009 his intent to adapt the novel and said he was working on a screenplay with the Wachowskis, who optioned the novel. By June 2010, Tykwer had asked actors Natalie Portman, Tom Hanks, Halle Berry, James McAvoy, and Ian McKellen to star in Cloud Atlas. By April 2011, the Wachowskis joined Tykwer in co-directing the film. In the following May, with Hanks and Berry confirmed in their roles, Hugo Weaving, Ben Whishaw, Susan Sarandon, and Jim Broadbent also joined the cast. Actor Hugh Grant joined the cast days before the start of filming. During four years of development, the project met difficulties securing financial support; it was eventually produced with a $102 million budget provided by independent sources, making it one of the most expensive independent films of all time. Production began in September 2011 at Studio Babelsberg in Potsdam-Babelsberg, Germany. Tykwer and the Wachowskis filmed parallel to each other using separate camera crews. Although they shot scenes all three together when permitted by the schedule, the Wachowskis mostly directed the 19th-century story and the two set in the future, while Tykwer directed the stories set in the 1930s, the 1970s, and 2012. Tykwer said that the three directors planned every segment of the film together in pre-production, and continued to work closely together through post-production. Warner Bros. Pictures representatives argued they were happy with the film's 172-minute running time, after previously stating that it should not exceed 150 minutes.
Simon says Cloud Atlas receives: