Qué (quién) es Scalable Coherent Interface - definición
ORGANIZATION
Scalable Coherent Interconnect
Scalable Coherent Interface
<hardware, protocol> (SCI) The ANSI/IEEE 1596-1992
standard that defines a point-to-point interface and a set
of packet protocols. The SCI protocols use packets with a
16-byte header and 16, 64, or 256 data bytes. Each packet
is protected by a 16-bit CRC code.
The standard defines 1 Gbit/second serial fiber-optic
links and 1 Gbyte/second parallel copper links. SCI has two
unidirectional links that operate concurrently.
The SCI protocols support shared memory by encapsulating
bus requests and responses into SCI request and response
packets. Packet-based handshake protocols guarantee
reliable data delivery. A set of cache coherence protocols
are defined to maintain cache coherence in a {shared memory
system}.
Message passing is supported by a compatible subset of the
SCI protocols. This protocol subset does not invoke SCI cache
coherency protocols.
SCI uses 64-bit addressing and the most significant 16 bits
are used for addressing up to 64K nodes.
http://uni-paderborn.de/pc2/systems/sci/.
[Applications? ]
(1999-03-22)
Coherent state
SPECIFIC QUANTUM STATE OF THE QUANTUM HARMONIC OSCILLATOR, OFTEN DESCRIBED AS A STATE WHICH HAS DYNAMICS MOST CLOSELY RESEMBLING THE OSCILLATORY BEHAVIOR OF A CLASSICAL HARMONIC OSCILLATOR
Glauber coherent states; Glauber state; Coherent states
In physics, specifically in quantum mechanics, a coherent state is the specific quantum state of the quantum harmonic oscillator, often described as a state which has dynamics most closely resembling the oscillatory behavior of a classical harmonic oscillator. It was the first example of quantum dynamics when Erwin Schrödinger derived it in 1926, while searching for solutions of the Schrödinger equation that satisfy the correspondence principle.
Scalable TCP
INTERNET COMMUNICATIONS PROTOCOL
Scalable Transmission Control Protocol
Type of Transmission Control Protocol which is designed to provide much higher throughput and scalability.
Wikipedia
Scalable Coherent Interface
The Scalable Coherent Interface or Scalable Coherent Interconnect (SCI), is a high-speed interconnect standard for shared memory multiprocessing and message passing. The goal was to scale well, provide system-wide memory coherence and a simple interface; i.e. a standard to replace existing buses in multiprocessor systems with one with no inherent scalability and performance limitations.
The IEEE Std 1596-1992, IEEE Standard for Scalable Coherent Interface (SCI) was approved by the IEEE standards board on March 19, 1992. It saw some use during the 1990s, but never became widely used and has been replaced by other systems from the early 2000s.
