Optical network for cluster computing

• US 8,103,137 B2
• Filed: 04/01/2009
• Issued: 01/24/2012
• Est. Priority Date: 04/01/2009
• Status: Active Grant

• Current Assignee: SanDisk Technologies LLC (Western Digital Corporation)
• Original Assignee: Fusion-IO Incorporated (Western Digital Corporation)
• Inventors: Kirkpatrick, Peter E., Verdiell, Jean-Marc, Epitaux, Marc
• Primary Examiner(s): Wong, Tina
• Application Number:
  US12/416,890
• Publication Number:
  US 20100254652A1
• Time in Patent Office: 1,028 Days
• Field of Search: None
• US Class Current: 385/17
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0052 Interconnection of switches

Abstract

Leaf switches and spine switches in a Clos network are interconnected by optical fibers. The network enables large numbers of servers or other apparatus to communicate with each other with minimal delay and minimal power consumption.

Claims

1. A connector comprising:

a first set of ports;

a plurality of leaf switches, wherein each leaf switch of the plurality of leaf switches is connected to each port of the first set of ports;

a second set of ports;

at least one spine switch, wherein each port of the second set of ports is connected to a spine switch of the at least one spine switch, and wherein the plurality of leaf switches comprises r leaf switches, the first set of ports comprises n ports, the second set of ports comprises p ports, the at least one spine switch comprises r*n/p spine switches, and a p/r fraction of ports of the first set of ports are coupled to each port of the second set of ports; and

an optical cluster fabric (OCF) comprising a plurality of channel sets coupled between the first set of ports and the second set of ports, wherein the OCF comprises a plurality of fiber optic lines forming the plurality of channel sets, wherein each channel set of the plurality of channel sets is connected between one port of the first set of ports and at least two ports of the second set of ports, wherein the first set of ports presents grouped channels for connection to a first set of switches, wherein the second set of ports presents the grouped channels for connection to a second set of switches, wherein each port of the first and second set of ports comprises a plurality of channels, wherein each channel comprises a plurality of fiber optic connections.

2. The connector of claim 1, wherein the OCF couples the plurality of channel sets of the first set of ports and the second set of ports according to a Clos network structure.

3. The connector of claim 2, wherein the Clos network structure comprises a full bisectional bandwidth.

4. The connector of claim 2, wherein the Clos network structure comprises a folded Clos network structure.

5. The connector of claim 1, wherein each channel set includes twelve (12) channels.

6. The connector of claim 1, wherein each channel of the channel set is coupled to an optical transceiver for converting between electrical and optical signals.

7. The connector of claim 1, wherein each channel of the channel set comprises:

a first optical fiber for conveying information from a first port of the first set of ports to a first port of the second set of ports; and

a second optical fiber for conveying information from the first port of the second set of ports to the first port of the first set of ports.

8. The connector of claim 1, wherein the OCF comprises a plurality of parallel ribbon fiber cables.

9. The connector of claim 1, wherein the first set of ports and the second set of ports each include an equal number of ports.

10. The connector of claim 1, wherein the first set of ports includes twelve (12) channels per port and the second set of ports includes twelve (12) channels per port.

11. The connector of claim 1, wherein the first set of ports and the second set of ports each include four (4) ports.

12. The connector of claim 1, wherein the first set of ports and the second set of ports each include eight (8) ports.

13. The connector of claim 1, comprising:

a leaf switch connected to each port of the first set of ports; and

a spine switch connected to two ports of the second set of ports.