Re: [OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution
The (low level verbs) latency has AFAIR changed only a few times: 1) started at 5-6us with PCI-X Infinihost3 2) dropped to 3-4us with PCI-express Infinihost3 3) dropped to ~1us with PCI-express ConnectX I would like to add that on PCI-EX Gen2 platforms the latency is sub micro (~0.8-0.95) Disclaimer: rough figures and only for Mellanox chips. The same declaimer here. Pasha Regards Neeraj Chourasia ___ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users
Re: [OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution
On Thursday 07 May 2009, nee...@crlindia.com wrote: > Thanks Pasha for sharing IB Roadmaps with us. But i am more interested in > to find out latency figures since they often matter more than bit rate. > > Could there be rough if not accurate the latency figures being targeted in > IB World? The (low level verbs) latency has AFAIR changed only a few times: 1) started at 5-6us with PCI-X Infinihost3 2) dropped to 3-4us with PCI-express Infinihost3 3) dropped to ~1us with PCI-express ConnectX Disclaimer: rough figures and only for Mellanox chips. /Peter > Regards > > Neeraj Chourasia signature.asc Description: This is a digitally signed message part.
Re: [OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution
Thanks Pasha for sharing IB Roadmaps with us. But i am more interested in to find out latency figures since they often matter more than bit rate. Could there be rough if not accurate the latency figures being targeted in IB World? Regards Neeraj Chourasia Member of Technical Staff Computational Research Laboratories Limited (A wholly Owned Subsidiary of TATA SONS Ltd) P: +91.9225520634 "Pavel Shamis (Pasha)" <pash...@gmail.com> Sent by: users-boun...@open-mpi.org 05/05/2009 11:59 PM Please respond to pa...@dev.mellanox.co.il; Please respond to Open MPI Users <us...@open-mpi.org> To Open MPI Users <us...@open-mpi.org> cc Subject Re: [OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution > I can't find a similar data set for Infiniband. I would appreciate any > comment/links. Here is IB roadmap http://www.infinibandta.org/itinfo/IB_roadmap ...But I do not see there SDR Pasha ___ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users =-=-= Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Internet communications cannot be guaranteed to be timely, secure, error or virus-free. The sender does not accept liability for any errors or omissions.Thank you =-=-=
Re: [OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution
I can't find a similar data set for Infiniband. I would appreciate any comment/links. Here is IB roadmap http://www.infinibandta.org/itinfo/IB_roadmap ...But I do not see there SDR Pasha
[OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution
Greetins, I am preparing a presentation where I will discuss commodity interconnects and the evolution of Ethernet and Infiniband NICs. The idea is to show the advance in network interfaces speed over time on a chart. So far I have collected the following *approximative* data for Ethernet: 1990 --> 100Mbits/s 2000 --> 1Gbits/s 2010 --> 10Gbits/s 2020 --> 100Gbits/s I can't find a similar data set for Infiniband. I would appreciate any comment/links. Thank you! --Rob.
