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)