hi, sometimes i go through a lot of mails at the mailing list here and had missed this one. please keep me up to date and/or add me to mailing lists there.
latency is superior of quadrics compared to all the infini* stuff. drivers that integrate into kernels - well some modifications shouldn't be too hard. Of course even the realtime linux kernel is rather crappy there, as it locks every action from and to a socket (even RAW/UDP communication in fact), so you need a 'hack' of that kernel anyway to get faster latencies. secondhand the quadrics stuff is cheap it seems. Vincent On Jan 11, 2011, at 5:55 PM, Daniel Kidger wrote: > Mark, > > I will let others step forward individually. > > I was one of the last employees to leave Quadrics , so I do know > who had > support contracts at that time, plus the even larger set of sites that > had expired support contracts but still were actively running their > QsNet clusters. > > You know that a company called Vega took on the ongoing support? : > here is the website I set up at the time: https:// > support.hpc.vega.co.uk/ > > I agree too though that there should be a community of QsNet-owning > enthusiasts, who could provide mutual support in this legacy era. > > > Also off the record, I know that there is a lot of Elan4 stock sitting > in a warehouse. As long as you are not looking for long term vendor > support, I expect you could acquire cards, cables and switches for a > bargain price. > > Daniel > > >> Are you still using Quadrics Elan4-based clusters? >> >> We would like to continue using Quadrics on one of our clusters, >> since it >> is still quite good in latency. Maintaining the Quadrics drivers, >> though, >> is a bit of a pain going forward - would be nice to avoid >> duplicating effort, >> if there are other groups also doing so. >> >> please follow up or email me if you are using Elan4, or know anything >> relevant. >> >> thanks, >> Mark Hahn | SHARCnet Sysadmin | h...@sharcnet.ca | http:// >> www.sharcnet.ca >> | McMaster RHPCS | h...@mcmaster.ca | 905 525 9140 >> x24687 >> | Compute/Calcul Canada | http:// >> www.computecanada.org >> _______________________________________________ >> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin >> Computing >> To change your subscription (digest mode or unsubscribe) visit >> http://www.beowulf.org/mailman/listinfo/beowulf >> >> > > > -- > Bull, Architect of an Open World TM > > Dr. Daniel Kidger, HPC Technical Consultant > daniel.kid...@bull.co.uk > +44 (0) 7966822177 > > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin > Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
