CSC/ECE 506 Fall 2007/wiki4 001 a1: Difference between revisions

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== Gigabit Ethernet ==
== Gigabit Ethernet ==
[[Image:ethernet.jpg]]


Ethernet is defined by IEEE Standard 802.3. It is implemented by networking protocols that allow 1GB of data to be transfered at a speed of up to 1 GB per second. 1 GB Ethernet is currently being replaced in the marketplace with the faster 10GB Ethernet. The standard defines the use of data frame collision detection rather than collision avoidance. If two data frames collide, the two sending nodes wait for a timer to expire and attempt to resend the frame. Each time a collision occurs, the timer at each node is set to a random value between 0 and 2^(k-1), where k is the number of collisions for a particular transmission.
Ethernet is defined by IEEE Standard 802.3. It is implemented by networking protocols that allow 1GB of data to be transfered at a speed of up to 1 GB per second. 1 GB Ethernet is currently being replaced in the marketplace with the faster 10GB Ethernet. The standard defines the use of data frame collision detection rather than collision avoidance. If two data frames collide, the two sending nodes wait for a timer to expire and attempt to resend the frame. Each time a collision occurs, the timer at each node is set to a random value between 0 and 2^(k-1), where k is the number of collisions for a particular transmission.

Revision as of 22:35, 23 November 2007

Current Supercomputer Interconnect Topologies


Gigabit Ethernet

Ethernet is defined by IEEE Standard 802.3. It is implemented by networking protocols that allow 1GB of data to be transfered at a speed of up to 1 GB per second. 1 GB Ethernet is currently being replaced in the marketplace with the faster 10GB Ethernet. The standard defines the use of data frame collision detection rather than collision avoidance. If two data frames collide, the two sending nodes wait for a timer to expire and attempt to resend the frame. Each time a collision occurs, the timer at each node is set to a random value between 0 and 2^(k-1), where k is the number of collisions for a particular transmission.

Infiniband

Infiniband DDR

Federation

Myrinet

NUMAlink

XT3 Internal Interconnect

Quadrics

Infiniband SDR

Sources

[1] top500.org interconnect usage (Share %), performance statistics (Rmax Sum)