阶段变化异构使得内存操作的噪声和漂移超低
Keyuan Ding1,2, Jiangjing Wang3,4, Yuxing Zhou3
1College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
Science (New York, N.Y.)
|August 24, 2019
概括
研究人员开发了一种新的相变异构 (PCH),以减少相变随机访问存储器 (PCRAM) 的噪声和漂移. 这项创新通过提高数据存储和处理精度, 实现了可靠的神经启发式计算.
科学领域:
- 材料科学
- 计算机工程
- 人工智能
背景情况:
- 像人工智能这样的数据密集型应用增加了对先进存储和处理的需求.
- 阶段改变随机访问存储器 (PCRAM) 提供了内存计算的潜力,克服了·诺伊曼瓶.
- 现有的PCRAM设备受到阻力噪声和漂移的影响,限制了精度和可靠性.
研究的目的:
- 设计一种新的相变异构 (PCH),以减轻PCRAM设备中的噪声和漂移.
- 为了实现可靠的代 RESET 和累积 SET 操作,以增强神经启发的计算.
- 为高性能计算提供与工业生产兼容的材料解决方案.
主要方法:
- 具有相变和封闭纳米层交替的相变异构 (PCH) 的制造.
- 对PCH架构的电气性能进行描述,重点关注噪声和漂移抑制.
- 评估PCH在计算应用中的代RESET和累积SET操作的性能.
主要成果:
- PCH架构有效地抑制PCRAM设备中的电阻噪声和漂移.
- 证明了可靠的代 RESET 和累积 SET 操作,这对于神经启发的计算至关重要.
- PCH设计提供了适合工业制造的固有材料解决方案,而不会显著增加成本.
结论:
- 开发的PCH架构解决了当前PCRAM技术的主要局限性.
- 这种创新为更加精确和一致的神经启发式计算设备铺平了道路.
- PCH为下一代数据存储和处理提供了可扩展和具有成本效益的解决方案.
相关概念视频
01:09Mutation, Gene Flow, and Genetic Drift
62.5K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
62.5K
01:05Instinctive Drift
668
Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
668
03:33Genetic Drift
43.0K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
43.0K
01:19Drift Velocity
5.4K
The high speed of electrical signals results from the fact that the force between charges acts rapidly at a distance. Thus, when a free charge is forced into a wire, the incoming charge pushes other charges ahead due to the repulsive force between like charges. These moving charges move the charges farther down the line. The density of charge in a system cannot easily be increased, so the signal is passed on rapidly. The resulting electrical shock wave moves through the system at nearly the...
5.4K
02:31Phase Transitions
22.7K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
22.7K
02:39Phase Diagrams
48.9K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
48.9K