On 12/06/2023 13:27, Alex Wilson via illumos-discuss wrote:
On 12/6/23 18:30, Guenther Alka wrote:Do the Mellanox drivers support IB mode? In the Illumos HCL there is Infiniband in the driver name but as far as I know in the past there was only ip support.For which Mellanox part, exactly? The "hermon" driver supports some older ConntectX IB parts (original ConnectX, not ConnectX-1,2,3,etc). The newer "mlxcx" driver is Ethernet-only but supports ConnectX-4 and later. We have no driver coverage for more recent Mellanox/nVidia IB parts, just their older ones.
At least up to Connect-X2, the older hermon IB driver should work, as the Connect-X<n> line of cards has a compatible original X mode. We have some of those in IB mode here, but they are not on the market anymore. But haven't tried ConnectX-3 and later yet, I faintly recall that from X-4 on that fallback mode ceased to exist, but not really sure about that. -- Dr.Udo Grabowski Inst.f.Meteorology & Climate Research IMK-ASF-SAT http://www.imk-asf.kit.edu/english/sat.php KIT - Karlsruhe Institute of Technology http://www.kit.edu Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026
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