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An asymmetric multiprocessing (AMP or ASMP) system is a multiprocessor computer system where not all of the multiple interconnected central processing units (CPUs) are treated equally. For example, a system might allow (either at the hardware or operating system level) only one CPU to execute operating system code or might allow only one CPU to ...
Multiprocessing is the use of two or more central processing units (CPUs) within a single computer system. [ 1 ] [ 2 ] The term also refers to the ability of a system to support more than one processor or the ability to allocate tasks between them.
Non-uniform memory access (NUMA) is a computer memory design used in multiprocessing, where the memory access time depends on the memory location relative to the processor. Under NUMA, a processor can access its own local memory faster than non-local memory (memory local to another processor or memory shared between processors). [ 1 ]
D Dual core versions supporting both symmetric and asymmetric multiprocessing, up to 1.5 GHz. MPC864x – e600 core, 1 MB L2 cache, improved AltiVec (out of order instructions), an embedded memory controller, Ethernet controllers, a RapidIO fabric interface, a PCI Express interface, and MPX bus. Dual core versions supporting both symmetric and ...
^ Two types of operating systems are able to use a dual-CPU multiprocessor: partitioned multiprocessing and symmetric multiprocessing (SMP). In a partitioned architecture, each CPU boots into separate segments of physical memory and operate independently; in an SMP OS, processors work in a shared space, executing threads within the OS ...
The term "multiprocessor" can be confused with the term "multiprocessing". While multiprocessing is a type of processing in which two or more processors work together to execute multiple programs simultaneously, multiprocessor refers to a hardware architecture that allows multiprocessing. [5]
PX5 RTOS supports most of the embedded MCU and MPU architectures, including ARM's Cortex-M, Cortex-R, Cortex-A, and RISC-V architecture families. It supports both 32-bit and 64-bit architectures, and provides support for both asymmetric multiprocessing (AMP) and symmetric multiprocessing (SMP) configurations. [13]
Diagram of a symmetric multiprocessing system. Symmetric multiprocessing or shared-memory multiprocessing [1] (SMP) involves a multiprocessor computer hardware and software architecture where two or more identical processors are connected to a single, shared main memory, have full access to all input and output devices, and are controlled by a single operating system instance that treats all ...