Uniform memory access (UMA) is a shared memory architecture used in parallel computers. All the processors in the UMA model share the physical memory uniformly. In an UMA architecture, access time to a memory location is independent of which processor makes the request or which memory chip contains the transferred data. Uniform memory access computer architectures are often contrasted with non-uniform memory access (NUMA) architectures. In the NUMA architecture, each processor may use a private cache. Peripherals are also shared in some fashion. The UMA model is suitable for general purpose and time sharing applications by multiple users. It can be used to speed up the execution of a single large program in time-critical applications.[1]
In April 2013, the term hUMA (heterogeneous uniform memory access) began to appear in AMD promotional material to refer to CPU and GPU sharing the same system memory via cache coherent views. Advantages include an easier programming model and less copying of data between separate memory pools.[2]
^Peter Bright. AMD's "heterogeneous Uniform Memory Access" coming this year in Kaveri, Ars Technica, April 30, 2013.
May 01, 2024
uniform, memory, access, shared, memory, architecture, used, parallel, computers, processors, model, share, physical, memory, uniformly, architecture, access, time, memory, location, independent, which, processor, makes, request, which, memory, chip, contains,. Uniform memory access UMA is a shared memory architecture used in parallel computers All the processors in the UMA model share the physical memory uniformly In an UMA architecture access time to a memory location is independent of which processor makes the request or which memory chip contains the transferred data Uniform memory access computer architectures are often contrasted with non uniform memory access NUMA architectures In the NUMA architecture each processor may use a private cache Peripherals are also shared in some fashion The UMA model is suitable for general purpose and time sharing applications by multiple users It can be used to speed up the execution of a single large program in time critical applications 1 Contents 1 Types of architectures 2 hUMA 3 See also 4 ReferencesTypes of architectures editThere are three types of UMA architectures UMA using bus based symmetric multiprocessing SMP architectures UMA using crossbar switches UMA using multistage interconnection networks hUMA editIn April 2013 the term hUMA heterogeneous uniform memory access began to appear in AMD promotional material to refer to CPU and GPU sharing the same system memory via cache coherent views Advantages include an easier programming model and less copying of data between separate memory pools 2 See also editNon uniform memory access Cache only memory architecture Heterogeneous System ArchitectureReferences edit Advanced Computer Architecture Kai Hwang ISBN 0 07 113342 9 Peter Bright AMD s heterogeneous Uniform Memory Access coming this year in Kaveri Ars Technica April 30 2013 Retrieved from https en wikipedia org w index php title Uniform memory access amp oldid 1144192680, wikipedia, wiki, book, books, library,
