HP Cluster Platform InfiniBand Interconnect Installation and User's Guide

LED NamePort 2
Physical Link - Green
Data Activity - Yellow
8.6 Mellanox PCI-Express HCA (SDR)
The Mellanox PCI-Express HCA supports InfiniBand protocols. It is single data rate (SDR) card
with two 4x InfiniBand 10 Gb/s ports and 128 MB memory. Figure 8-6 shows the Mellanox
PCI-Express HCA. The Mellanox PCI–Express HCA has 128MB, a tall bracket, and is a RoHS-R5
HCA card.
Figure 8-6 Mellanox PCI–Express HCA
Features of the Mellanox PCI-Express HCA include:
• 4x InfiniBand 10 Gb/s x 2 ports
• 128 MB memory
• PCI-Express x8 edge connector
• I/O Panel LEDs
• I2C compatible connector (for debug)
• Supports InfiniBand protocols
Installation of the Mellanox card is similar to that of the Voltaire HCAs described previously in
this chapter.
8.6.1 Mellanox PCI-Express 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
100 Installing and Maintaining HCA Cards and Mezzanines