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=== Virtualization and emulation === HP sells a [[OS-level virtualization|virtualization]] technology for Itanium called [[HP Integrity Virtual Machines|Integrity Virtual Machines]]. [[Emulator|Emulation]] is a technique that allows a computer to execute binary code that was compiled for a different type of computer. Before IBM's acquisition of [[QuickTransit]] in 2009, application binary software for [[IRIX]]/[[MIPS architecture|MIPS]] and [[Solaris (operating system)|Solaris]]/[[SPARC]] could run via type of emulation called "dynamic binary translation" on Linux/Itanium. Similarly, HP implemented a method to execute PA-RISC/HP-UX on the Itanium/HP-UX via emulation, to simplify migration of its PA-RISC customers to the radically different Itanium instruction set. Itanium processors can also run the mainframe environment [[General Comprehensive Operating System|GCOS]] from [[Groupe Bull]] and several [[x86]] operating systems via [[instruction set simulator]]s.
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