On Fri, 8 Oct 2021 at 23:15, Gordon Messmer <gordon.messmer at gmail.com> wrote: > > On 10/8/21 10:51, Mark Woolfson wrote: > > I have a large server cluster running CentOS 6.4 and CentOS 6.6 using 10GbE. > > I want to upgrade to Infiniband. > > > CentOS 6 hasn't received any feature updates since May 2017, so any > compatible hardware would have had to be released and supported before > that date (possibly substantially before then). > > CentOS 6 has been EOL for almost a year, and isn't receiving any > security updates. You *really* should upgrade. > The versions of CentOS 6 this cluster is running are from 2013 and 2014 so they are looking at 10 year old infiniband. Going from that, I think the best they can hope for is a Mellanox ConnectX-3 which seems to have some caveats https://access.redhat.com/solutions/302543. The ConnectX-4 came out in late 2014 early 2015 so i don't know if its drivers ever were set to EL-6 I agree with Gordon that you need to plan on upgrading more than just the backbone network since you are probably looking at significant downtime to do that AND are in a high risk for security problems. -- Stephen J Smoogen. I've seen things you people wouldn't believe. Flame wars in sci.astro.orion. I have seen SPAM filters overload because of Godwin's Law. All those moments will be lost in time... like posts on a BBS... time to shutdown -h now.