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From The Free On-line Dictionary of Computing (05 January 2017) [foldoc]:
Scalable Coherent Interface
(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)