Hi, for various reasons I'm trying to force a specific setting for the link speed and link width of an IB link.
I know opensm has an option to force link speed to a certain value. I modified OpenSM (3.3.5) and added a similar option for link width (link_width_enabled field of port info struct). Reading the IB spec, link_width_enabled is marked as read-write, just as the link speed field. However, it doesn't seem to work. I verified that link_width_enabled is correctly set. My questions: - Is support for changing link width dependent on driver version or specific IB hardware? - Is there another way to get what I want (control over link width+speed)? Thanks, Dries PS. Please cc me. I'm not on the list. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
