Close to Metal

In computing, Close To Metal (CTM, originally Close-to-the-Metal) is the name of a beta version of a low-level programming interface developed by ATI, now the AMD Graphics Product Group, aimed at enabling GPGPU computing. CTM was short-lived, and the first production version of AMD's GPGPU technology is now called AMD Stream SDK, or rather the current AMD APP SDK (AMD Accelerated Parallel Processing SDK)^[1] ) for Windows and Linux 32-bit and 64-bit, which also targets Heterogeneous System Architecture.^{[citation needed]}