HP Cluster Platform Interconnects v2010 HP Cluster Platform InfiniBand Interco - Page 104
Mellanox PCI-Express DDR HCA LEDs, Mellanox PCI-Express HCA DDR
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Figure 8-9 Mellanox PCI-Express HCA (DDR) Features of the Mellanox PCI-Express DDR HCA include: • Two 4X InfiniBand copper ports for connecting InfiniBand traffic (4X IB connectors) • 4X port supports 20 Gb/s • Third-Generation HCA core • On board DDR SDRAM memory (memory configurations vary) • PCI-Express x8 edge connector • I/O Panel LEDs Installation of the Mellanox PCI-Express DDR HCA is similar to that of the Voltaire HCAs described previously in this chapter. 8.9.1 Mellanox PCI-Express DDR 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 Port 2 LED Name Physical Link - Green Data Activity - Yellow LED Name Physical Link - Green Data Activity - Yellow 104 Installing and Maintaining HCA Cards and Mezzanines