Blue Gene/L programming and operating environment. - José E. Moreira; George Almási 001; Charles Archer; Ralph Bellofatto; Peter Bergner; José R. Brunheroto; Michael Brutman; José G. Castaños; Paul Crumley; Manish Gupta 002; Todd Inglett; Derek Lieber; et al. (IBM J. Res. Dev., 2005)