[Beowulf] connect Mellanox IB FDR adapter to QLogic IB QDR switch?

[Marko Kobal]

Hi,

Well, I noticed that the links did eventually came up ... however it 
took several hours to do the link initialization:

cat /var/log/messages | grep mlx4_core

node_1:
Jun  6 17:42:08 node_1 kernel: mlx4_core 0000:10:00.0: PCI INT A -> GSI 
30 (level, low) -> IRQ 30
Jun  7 04:35:33 node_1 kernel: mlx4_core 0000:10:00.0: mlx4_ib: Port 1 
logical link is up

node_2:
Jun 12 16:05:12 node_2 kernel: mlx4_core 0000:10:00.0: PCI INT A -> GSI 
30 (level, low) -> IRQ 30
Jun 12 20:50:24 node_2 kernel: mlx4_core 0000:10:00.0: mlx4_ib: Port 1 
logical link is up

The connection is now actually working, however the extremely long time 
to make the link initialization is really weird (and annoying when doing 
server or openibd restart) ... Anyone seen this kind of behaviour on 
Mellanox adapters?


Kind regards, Marko Kobal