I have a QDR ib switch that should support up to 40Gbps. After installing the kernel-ib and lustre client rpms on my SuSe nodes I see the following:<br><br>hpc102:~ # ibstatus mlx4_0:1<br>Infiniband device 'mlx4_0' port 1 status:<br>
default gid: fe80:0000:0000:0000:0002:c903:0006:de19<br> base lid: 0x7<br> sm lid: 0x1<br> state: 4: ACTIVE<br> phys state: 5: LinkUp<br> rate: 20 Gb/sec (4X DDR)<br>
<br>Why is this only picking up 4X DDR at 20Gb/sec? Do the lustre rpm's not support QDR? Is there something that I need to do on my side to force 40Gb/sec on these ports?<br><br>Thanks in advance,<br>-J<br>