Posts Tagged ‘ hpc ’

Josh Simons

Running HPC Applications on vSphere using InfiniBand RDMA

December 22, 2014
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Running HPC Applications on vSphere using InfiniBand RDMA

Looking back on 2014, this was the year in which we made significant strides in assessing and addressing High Performance Computing (HPC) performance on vSphere. We’ve shown that throughput or task-parallel applications can be run ¬†with only small or negligible performance degradations (usually well under 5%) when virtualized — a fact that the HPC community seems to now generally accept. The big new thing this year, however, was the progress we are making with MPI applications — specifically those applications that require a high-bandwith, low-latency RDMA interconnect like InfiniBand. As I mentioned in an earlier blog post , we generated a great deal of RDMA-based performance data about HPC applications and benchmarks this past summer due to the hard work...

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Josh Simons

Supercomputing ’14 Begins: Laissez les bon temps rouler!

November 17, 2014
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Supercomputing ’14 Begins: Laissez les bon temps rouler!

  SC’14 , the big, annual High Performance Computing (HPC) conference officially kicks off in New Orleans this evening with the opening of the exhibits. Workshops and tutorials have been held over the weekend as well: I gave a keynote presentation on Sunday at the 4th International Workshop on Network-aware Data Management ( NDM’14 ), titled RDMA in the Cloud: Enabling high-bandwidth, low-latency communication in virtual environments for HPC (slides:¬† NDM’14 keynote ). While I’ve been attending SC since the late 1980s and have attended each year I’ve been at VMware, this year marks the first time VMware will have an official presence on the show floor. We’ve partnered with EMC’s Office of the CTO...

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Josh Simons

High Performance Computing (HPC) Update

October 31, 2014
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High Performance Computing (HPC) Update

Our HPC effort at VMware has been very active in recent months, and we have lots of information to share– including new performance results. Rather than cramming all of that content into a single mega blog entry, I’ve decided instead to give a preview here of some of the most significant developments. I will then delve into each of these areas in more detail in a series of upcoming monthly blog posts. InfiniBand Performance This spring we installed a four-node InfiniBand HPC cluster in our lab in Cambridge, MA. The system includes four HP DL380p Gen8 servers, each with 128 GB memory and two Intel 3.0GHz E5-2667 eight-core processors and Mellanox ConnectX3 cards that support both FDR (56 Gb/s) InfiniBand and 40 Gb/s RoCE....

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Virtualized High Performance Computing in 2014

December 12, 2013
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Virtualized High Performance Computing in 2014

As we complete another circuit around the sun, it’s time again to make some predictions about what we’ll see over the course of our next orbit. Since my work in the Office of the CTO focuses on High Performance (Technical) Computing, I’ll focus there. But before looking ahead, let’s take a minute to look back and see how I did with my predictions last year . 2013 Predictions Scorecard Last year, my predictions related to public cloud, private cloud, RDMA in the cloud, virtual machine evolution, and HPC acquisitions. My biggest “miss” was also my most specific prediction — that Amazon would announce RDMA support in 2013 in order to better support latency-sensitive MPI applications. They did not,...

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Josh Simons

Virtualized High Performance Computing (HPC) at VMworld 2013

August 19, 2013
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It’s been a busy few months on the HPC front here at VMware. I’ve been spending increasing amounts of time answering questions from our field people and talking with customers about the benefits of using virtualization and cloud technologies for HPC workloads. The two hottest application areas are clearly Life Sciences and Electronic Design Automation (EDA), with Financial Services as a third area where serious interest is starting to ramp. Customers in these sectors are actively evaluating or deploying HPC solutions based on VMware technology. Some of this work will be presented at VMworld 2013 August 25-29 in San Francisco. Here are the talks that will be of special interest to organizations whose job mixes include the technical, scientific or engineering...

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Josh Simons

Hadoop Performance on vSphere 5.1

April 19, 2013
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Hadoop Performance on vSphere 5.1

We’ve just published a third Hadoop performance paper, written by VMware performance expert Jeff Buell, which looks in detail at the relative performance of a bare-metal 32-node Hadoop cluster compared to a range of virtual clusters with up to 128 VMs. The executive summary is that while we saw a 13% performance degradation in a head-to-head comparison of a 32-node physical cluster against a 32-VM virtual cluster (one VM per host) running on the same hardware and running the same tests, virtualized performance can be increased significantly — to the point where virtualized Hadoop actually runs a bit faster than physical — by increasing the number of VMs per host. We’ve seen this effect before with Hadoop...

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