HP Cluster Platform Interconnects v2010 HP Cluster Platform InfiniBand Interco - Page 99
Mellanox PCI-X HCA (SDR), 8.5.1 Mellanox PCI-X SDR HCA LEDs
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The LED ports on the Topspin/Mellanox PCI-Express HCA blink to indicate traffic on the InfiniBand link on initial setup. The installation and LEDs of the Topspin cards are similar to that of the Voltaire HCAs described previously in this chapter. 8.5 Mellanox PCI-X HCA (SDR) The Mellanox PCI-X HCA supports InfiniBand protocols. It is single data rate (SDR) card with two 4x InfiniBand 10 Gb/s ports and 128 MB memory. Figure 8-5 shows the Mellanox PCI-X HCA Figure 8-5 Mellanox PCI-X HCA Features of the Mellanox PCI-X HCA include: • 4x InfiniBand 10 Gb/s ports • 128 MB memory • PCI-X 64 bit 66/133 MHz Edge Connector • I/O Panel LEDs • 3.3 V only, up to 133 MHz • Supports InfiniBand protocols Installation of the Mellanox PCI-X HCA is similar to that of the Voltaire HCAs described previously in this chapter. 8.5.1 Mellanox PCI-X SDR HCA LEDs The board has four LEDs located on the I/O panel - 2 LEDs per 4X port. The physical link (green) illuminates once VAPI (InfiniBand Verbs API) is started and a physical connection is made between two nodes. The data activity link (yellow) illuminates once the InfiniBand network is discovered over the physical link. The activity link is a steady yellow when it is discovered, but no data is being passed. The activity link blinks when data is being passed. If the LEDs are not active, either the physical or the logical (or both) connections have not been established. Port 1 LED Name Physical Link - Green Data Activity - Yellow 8.5 Mellanox PCI-X HCA (SDR) 99