![]() In some benchmarks, x86-64-only programs performed better under Rosetta 2 on a Mac with an Apple M1 SOC than natively on a Mac with an Intel x86-64 processor. Rosetta 2's performance has been praised greatly. In addition to the just-in-time (JIT) translation support, Rosetta 2 offers ahead-of-time compilation (AOT), with the x86-64 code fully translated, just once, when an application without a universal binary is installed on an Apple silicon Mac. To install Rosetta 2 on an Apple silicon Mac there are two ways to do it: either by using the Terminal to install the program directly, or by trying to open an application compiled for x86-64, which will open an installation window. The software permits many applications compiled exclusively for execution on x86-64-based processors to be translated for execution on Apple silicon. In 2020, Apple announced Rosetta 2 would be bundled with macOS Big Sur, to aid in the Mac transition to Apple silicon.
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