HP Cluster Platform Interconnects v2010 Myrinet System Interconnect Guide - Page 13
PCI cards, 2.1 General characteristics, PCI Identification Label
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2 PCI cards Every node in a cluster that uses a Myricom system interconnect has a PCI host bus adapter (HBA), and each host interface has a connection to the interconnect. This chapter presents the following information relating to the three versions of the PCI card that might be used in an HP Cluster Platform solution: • General characteristics of the PCI card (Section 2.1) • A description of the single-port XP PCI Rev. D card (Section 2.2) • A description of the dual-port 2XP PCI Rev. E card (Section 2.3) • A description of the single-port 2XP PCI Rev. F card (Section 2.4) 2.1 General characteristics The Myricom PCI card can have a single port (LANai XP), as shown in Figure 2-2, or dual (LANai 2XP) port, as shown in Figure 2-3. Each has at least one multiprotocol communication port, referred to as the X-port. (LANai is the Myrinet terminology for its PCI-X interface processor.) The faceplate of each PCI card has two LEDs. A green "link" LED illuminates when the host is powered, the link is active, and the firmware is loaded on the host. It blinks to show when packet traffic is flowing through the port. A yellow LED is controlled by the RISC processor. It pulses when there is packet-sending activity. The LED on each switch port indicates the state of that port. Green indicates the port is powered, and a link is connected. Yellow indicates a fault. If the switch port is unlit, the switch is not powered, or there is a problem with the line card. The LEDs for the ports only light when there is a cable attached and the GM message passing system from Myrinet is running. For more information about GM, see your system software documentation and the following Myricom Web site: http://www.myri.com/scs/index.html#documentation A label similar to that shown in Figure 2-1 appears on every PCI interface. This label contains the product code, the serial number, and the Ethernet MAC address. Figure 2-1: PCI Identification Label PCI cards 2-1