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Non-volatile memory (NVM) or non-volatile storage is a type of computer memory that can retain stored information even after power is removed. In contrast, volatile memory needs constant power in order to retain data.
Non-volatile random-access memory (NVRAM) is random-access memory that retains data without applied power. This is in contrast to dynamic random-access memory (DRAM) and static random-access memory (SRAM), which both maintain data only for as long as power is applied, or forms of sequential-access memory such as magnetic tape, which cannot be randomly accessed but which retains data ...
SanDisk/Fusion-io's NVMFS file system, formerly known as Direct File System (DFS), [1] [2] accesses flash memory via a virtual flash storage layer instead of using the traditional block layer API. This file system has two main novel features. First, it lays out files directly in a very large virtual storage address space.
NVMe 2.0 added optional Zoned Namespaces (ZNS) feature and Key-Value (KV) feature, and support for rotating media such as hard drives. ZNS and KV allows data to be mapped directly to its physical location in flash memory to directly access data on an SSD. [ 45 ]
The Cyrix M1, released on October 2, 1995, [2] was the first x86 processor to use register renaming and out-of-order execution. Other x86 processors (such as NexGen Nx686 and AMD K5 ) released in 1996 also featured register renaming and out-of-order execution of RISC μ-operations (rather than native x86 instructions).
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Aliasing can occur in any language that can refer to one location in memory with more than one name (for example, with pointers).This is a common problem with functions that accept pointer arguments, and their tolerance (or the lack thereof) for aliasing must be carefully documented, particularly for functions that perform complex manipulations on memory areas passed to them.
Alias analysis is a technique in compiler theory, used to determine if a storage location may be accessed in more than one way. Two pointers are said to be aliased if they point to the same location. Alias analysis techniques are usually classified by flow-sensitivity and context-sensitivity. They may determine may-alias or must-alias information.