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nndocs:infiniband [2026/08/09 06:35] – Move GUIDs to their pages naptasticnndocs:infiniband [2026/10/07 22:16] (current) – [Hardware Settings] naptastic
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 I haven't tried large numbers of VFs. The hardware upper limit is 63 for Connect-IB and 127 for ConnectX-3. Any number of system components could impose lower limits. I don't expect to need so many guests with IOV networking anyway... I haven't tried large numbers of VFs. The hardware upper limit is 63 for Connect-IB and 127 for ConnectX-3. Any number of system components could impose lower limits. I don't expect to need so many guests with IOV networking anyway...
  
 +(Note added later) The ConnectX-3 cards can't actually do SR-IOV. On newer kernels (how new? Dunno) the mlx4_core driver's SR-IOV functionality does not work anymore. You can create virtual functions, assign them to VMs, whatever... no traffic will pass. There's a thread on ServeTheHome forums about it. I'm not hopeful that it will ever get fixed.
 =====Upper-Layer Protocols (ULPs)===== =====Upper-Layer Protocols (ULPs)=====
 RDMA opens all kinds of possibilities for RDMA-aware protocols to be amazing and fast. They probably all deserve their own pages. RDMA opens all kinds of possibilities for RDMA-aware protocols to be amazing and fast. They probably all deserve their own pages.
nndocs/infiniband.1786257325.txt.gz · Last modified: 2026/08/09 06:35 by naptastic