The onePK announcement Ric describes in the previous blog entry is game changing. It also intersects a trend which has gone fairly unnoticed in the networking standards areas. The importance of new standards is declining relative to advances in software and hardware. Read More »
We’ve held our annual Cisco Open Source event this week, on May 1st in San Jose. I’m very impressed to see the large turnout and the ultra positive feedback after the keynote and 5 tracks on Linux, SDN, Big Data, Emerging Technologies and Community Development. Wonderful to see Irving Wladawsky-Berger from IBM, Jim Zemlin from the Linux Foundation, Simon Crosby from Bromium and the great discussions that ensued. Next time we’ll have to open this event up to more than just one afternoon, there is just so much open collaboration that is taking place. My thanks to our track leads, Michael Hein who helped me put together the Linux track, Jan Medved and Dave Ward on SDN, Mark Voelker and Ed Warnicke on Big Data, Fabio Maino and Flavio Bonomi on Emerging Technologies, and Peter Saint-Andre for the Community Management and Tools — these guys have already left their mark on timeless and enduring open standards, but it’s amazing to see how good they are in open source! We’ll have to post the key takeaways in these next blog entries, for now to all those of you who came, contributed and enjoyed this event, we salute you! Open at Cisco is a vibrant and growing community.
Just in case you didn’t see my tweet: my group is hiring!
We need some Linux kernel hackers for some high-performance networking stuff. This includes MPI and other verticals.
I believe that the official job description is still working its way through channels before it appears on the official external Cisco job-posting site, but the gist of it is Linux kernel work for Cisco x86 servers (blades and rack-mount) and NICs in high performance networking scenarios.
Are you interested? If so, send me an email with your resume — I’m jsquyres at cisco dot com.
Welcome to 2012! I’m finally about caught up from the Christmas holidays, last week’s travel to the MPI Forum, etc. It’s time to finally get my blogging back on.
Let’s start with a short one…
Rich Brueckner from InsideHPC interviewed me right before the Christmas break about the low Ethernet MPI latency demo that I gave at SC’11. I blogged about this stuff before, but in the slidecast that Rich posted, I provide a bit more detail about how this technology works.
Remember that this is Cisco’s 1st generation virtualized NIC; our 2nd generation is coming “soon,” and will have significantly lower MPI latency (I hate being fuzzy and not quoting the exact numbers, but the product is not yet released, so I can’t comment on it yet. I’ll post the numbers when the product is actually available).
Linux VFIO (Virtual Function IO) is an emerging technology that allows direct access to PCI devices from userspace. Although primarily designed as a hypervisor-bypass technology for virtualization uses, it can also be used in an HPC context.
Think of it this way: hypervisor bypass is somewhat similar to operating system (OS) bypass. And OS bypass is a characteristic sought in many HPC low-latency networks these days.
Drop by the Cisco SC’11 booth (#1317) where we’ll be showing a technology preview demo of Open MPI utilizing Linux VFIO over the Cisco “Palo” family of first-generation hardware virtualized NICs (specifically, the P81E PCI form factor). VIFO + hardware virtualized NICs allow benefits such as:
- Low HRT ping-pong latencies over Ethernet via direct access to L2 from userspace (4.88us)
- Hardware steerage of inbound and outbound traffic to individual MPI processes
Let’s dive into these technologies a bit and explain how they benefit MPI.