[openib-general] Which driver to choose, OpenIB or IBGD?

[Tziporet Koren]

Ian Jiang wrote:
>
> Did anybody get an experiment result of comparison?
user level performance test show that gen2 latency is ~0.3 usec (depend 
on CPU mhz you have) better then gen1.
Bandwidth is the same.
> Do you know which version of OpenIB driver does the IBG2 base on?
svn rev: 5166
> Another question: Is it matters which driver is used for the 
> communication between IB cards or swithes? Or could a IB card drived 
> by IBGD/IBG2 communicate correctly with one drived by OpenIB?
Between HCA and switch is IB wire protocol, so SW should not influence 
on this.

In general I would recommend  developing new projects on gen2.

Tziporet