Durga C., long-time listener, first-time caller, sent me a few interesting questions that I thought I’d share with everyone. Here’s his first question:
- What is the role of the hardware in an RDMA transaction? In other words, why does one need special hardware (e.g., InfiniBand, iWARP, RoCE, etc.) hardware to do RDMA as opposed to a “normal” Ethernet NIC?
This one question is surprisingly complex. Let’s dive in…
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Tags: hardware, HPC, mpi, RDMA, RMA, software
In my recent blog, Experience Matters in Collaboration (So does Architecture), I shared my thoughts on how we are facing a workplace that is no longer a physical place, but a blend of virtual and physical environments; where employees are bringing their preferences to work and BYOD (“Bring Your Own Device” to work) is the new norm; where collaboration has to happen beyond a walled garden; and any-to-any connectivity is a requirement, not a “nice to have.”
Cisco is committed to delivering a new collaborative workspace that meets our customer’s needs and empowers users to work their way—anytime, anywhere and on any device. As we announced last week, findings from the Cisco IBSG Horizons Study on virtualization and BYOD shows that 95% of organizations surveyed allow employee-owned devices in some way, shape or form in the office, and, 36% of surveyed enterprises provide full support for employee-owned devices. These stats underscore a major shift in the way people are working, in the office, at home and on-the-go, a shift that will continue to gain momentum.
Over the last year, Cisco has demonstrated a commitment to delivering innovative software like Cisco Jabber and Cisco WebEx across a wide spectrum of operating systems, tablets and Smart Phones. We’re seeing tremendous interest in these software offerings. Customers see the value in how these offerings enable employees to work on their terms in the Post-PC era, while still having access to collaboration experiences.
Based on these market transitions, Cisco will no longer invest in the Cisco Cius tablet form factor, and no further enhancements will be made to the current Cius endpoint beyond what’s available today. However, as we evaluate the market further, we will continue to offer Cius in a limited fashion to customers with specific needs or use cases.
Moving forward, we intend to double down on software offerings, like Jabber and WebEx, that provide the anytime, anywhere, and any device experiences. We will leverage key learnings and key collaboration experiences native to Cius in our other collaboration products.
Experience matters, and Cisco is focused on empowering individual collaboration styles more effectively and securely, while providing the broadest choice of collaboration options based on preference, location, and device.
Tags: byod, Cius, collaboration, jabber, software, WebEX
By Howard Baldwin, Contributing Columnist
The place: San Francisco. The time: a Saturday afternoon.
The scenario: after lunch, two out-of-town couples find themselves in a neighborhood where taxi cabs are scarce. One of the women remembers a new iPhone app called Uber that allows you to wirelessly order a Lincoln Towncar and bill the trip to a credit card.
Elapsed time between signing up with Uber and the car arriving: 10 minutes. Estimated incremental cost above a traditional cab: $7.
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Tags: apps, global networked economy, jobs, mobile, smartphone, software, tablet
This week in No Jitter, Cisco Collaboration Vice President Murali Sitaram is featured in an extensive Q&A with editor Dave Michels. Entitled, “Cisco’s Quadragenarian,” Sitaram is working to take Cisco, a company with a strong networking core, and move it towards collaboration software that is both social and cloud-based.
Murali discusses his role, Cisco’s perspective on social business software, the post PC-era, collaboration in general, people-centric collaboration, email and more. In part he says:
“In today’s post-PC era, employees no longer are tied to their desk or required to sit in a conference room to do their jobs…Social collaboration adds a new layer to the communication experience, allowing companies to innovate, grow, expand into new markets and increase productivity.
Over the last two or three decades we have been living in the era of the “document” or…email…if you think about it, people don’t really collaborate or work in that way…We have conversations, we share in communities…previous generation of tools have outlived their utility and we must rethink how people work.”
Read about Sitaram’s radical suggestions for shifting email workloads to better workspaces for people to collaborate. I hope you enjoy reading the interview. Let me know your thoughts on collaboration and enterprise social software.
Tags: Cisco Quad, cloud, collaboration, no jitter, Social Business, software
MPI implementations are large, complex beasts. By definition, they span many different layers ranging from the user-level implementation all the way down to sending 1s and 0s across a physical network medium.
However, not all MPI implementations actually “own” the code at every level. Consider: a TCP-based MPI implementation only “owns” the user-level middleware. It cannot see or change anything in the TCP stack (or below). Such an implementation is limited to optimizations at the user space level.
That being said, there certainly are many optimizations possible at the user level. In fact, user space is probably where the largest number of optimizations are typically possible. Indeed, nothing can save your MPI_BCAST performance if you’re using a lousy broadcast algorithm.
However, lower-layer optimizations are just as important, and can deliver many things that simply cannot be effected from user space.
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Tags: hardware, HPC, mpi, network, software