Next Previous Contents 4. Linux on SPARC: 2 kernels. Actually Linux on SPARC architecture comes in two flavors: A 32 bits kernel for the Sun SPARC, Super SPARC, Micro SPARC and Hyper SPARC Processors. A 64 bits kernel for UltraSPARC based workstations. In both case most applications run in 32 bit ( 32 bit userland ). There is a comprehensive FAQ on UltraLinux's website. Next Previous Contents