The Data Accelerator from Dell Technologies breaks through I/O bottlenecks that impede the performance of HPC workloadsIn high performance computing, big advances in system architectures are seldom made by a single company working in isolation. To raise the system performance bar to a higher level, it typically takes a collaborative effort among technology companies, system builders and system users. And that’s what it took to develop the Data Accelerator (DAC) from Dell Technologies.This unique solution to a long-running I/O challenge was developed in a collaborative effort that drew on the expertise of HPC specialists from Dell Technologies, Intel, the University of Cambridge and StackHPC. The resulting solution, DAC, enables the next generation of data‑intensive workflows in HPC systems with an NVMe‑based storage solution that removes storage bottlenecks that slow system performance.How so? DAC is designed to make optimal use of modern server NVMe fabric technologies to mitigate I/O‑related performance issues. To accelerate system performance, DAC proactively copies data from a cluster’s disk storage subsystem and pre-stages it on fast NVMe storage devices that can feed data to the application at a rate required for top performance. Even better, this unique architecture allows HPC administrators to leave data on cost-effective disk storage until it is required by an application, at which point the data is cached on the DAC nodes.Plunge FrozenCryogenic Electron Microscopy (Cryo-EM) with Relion is one of the key applications for analyzing and processing these large data sets. Greater resolution brings challenges — as the volume of data ingest from such instruments increases dramatically, and the compute requirements for processing and analyzing this data explode.The Relion refinement pipeline is an iterative process that performs multiple iterations over the same data to find the best structure. As the total volume of data can be tens of terabytes in size, this is beyond the memory capacity of almost all current-generation computers and thus, the data must be repeatedly read from the file system. The bottleneck in application performance moves to the I/O.A recent challenging test case produced by Cambridge research staff has a size of 20TB. The I/O time for this test case on the Cumulus traditional Lustre file system versus the new NVMe DAC reduces I/O wait times from over an hour to just a couple of minutes.The Data Accelerator in the Cumulus supercomputer incorporates components from Dell Technologies, Intel and Cambridge University, along with an innovative orchestrator built by the University of Cambridge and StackHPC.With its innovative features, DAC delivers one of the world’s fastest open‑source NVMe storage solutions. In fact, with the initial implementation of DAC, the Cumulus supercomputer at the University of Cambridge reached No. 1 in the June 2019 I/O-500 list. That means it debuted as the world’s fastest HPC storage system, nearly doubling the performance of the second‑place entry.And here’s where this story gets even better. Today, Dell Technologies is sharing the goodness of DAC by making the solution available to the broad community of HPC users via an engineering-validated system configuration covering DAC server nodes, memory, networking, PCIe storage and NVMe storage.Ready for a deeper dive?For a closer look at DAC, including system configuration details, see the Data Accelerator solution brief.For a detailed technical examination of the DAC architecture and development effort, see “HPC Innovation Exchange: The Data Accelerator.”To download the DAC software stack, visit Cambridge University GitHub page.Read the Dell Technologies case study with Cambridge University.
As the days get shorter and colder, the Department of Romance Languages and Literatures is trying to spread positivity around campus with a new creative art display between DeBartolo and O’Shaughnessy Halls. The exhibit is called “Romance Rocks” and consists of rocks decorated with words written in foreign languages of positivity and encouragement to students, faculty and other passersby. Emma Farnan | The Observer The “Romance Rocks” display, located between DeBartolo and O’Shaughnessy Halls. The display was organized by the Department of Romance Languages and Literatures and is meant to send a message of positivity to passing pedestrians.Sara Nunley, the undergraduate studies coordinator in the Department of Romance Languages and Literatures and the person who organized the display, said “Romance Rocks” is meant to combat negativity in the community.“We basically are spreading kindness and encouragement across campus to all students,” Nunley said. “I feel like sometimes things can be so negative that we want positivity and stuff to be spread.”The rocks were created by about 500 students currently enrolled in beginning and intermediate level romance language courses. The rocks include words and phrases written in Italian, French, Spanish and Portuguese. In addition to the positive message, the display is also intended to be a creative way for passing pedestrians to engage with foreign languages.Shauna Williams, the Department of Romance Languages and Literatures’ director of undergraduate studies, helped orchestrate the display. Williams noted the religious aspect of the art. “It lines up really well, as a Catholic University, with our Catholic mission of inclusion and diversity and celebrating differences,” she said.The display is also designed to bring an artistic change of pace to students in language courses, Nunley explained.“I’ve heard a lot from faculty that most students really enjoyed it,” she said. “Just taking a break from their normal routine in class, to just have like a breather you know and just do something fun and creative.”“Romance Rocks” is now beginning its second week on display and is scheduled to be cleared by Friday. Community members and language students will help clean up the display. The display’s first week, Williams explained, was designed to draw attention to the art.“We wanted it on display for two weeks,” she said. “One week so people could just walk by and notice it, especially since this weekend we had a home football game, we had a home hockey game, a home women’s basketball game and a home women’s volleyball game.”During the display’s second week, Nunley said community members are encouraged to pick up the rocks and share them.“This is the week that you’re to take one for yourself or share one with a friend,” she said. Though Nunley organized and brought the project to Notre Dame, “Romance Rocks” is inspired by the Kindness Rocks Project, founded by Megan Murphy. Murphy is a “Women’s Empowerment Coach, Business Mentor, Kindness Activist, Meditation Instructor and Lecturer,” according to the Project’s website.Williams said the rocks themselves also communicate an important message about the longevity of positive thinking.“What do rocks even symbolize? Its something thats a little, you know, enduring and lasting through centuries,” she said. “They kind of have this other meaning of durability and long-lasting perseverance.”Tags: Department of Romance Languages and Literatures, positivity, Romance Rocks
Read Also: Video: Ramos fires home wonder free kick against Real Mallorca Mathieu later claimed he was always made a scapegoat when things went wrong at the Camp Nou and as reported by ESPN, he claimed that Catalan newspaper Diario Sport “always had something bad to say about me.” Mathieu played in France for Sochaux and Toulouse before his switch to Spanish football. FacebookTwitterWhatsAppEmail分享 “It was a pleasure to wear this shirt and play with you and enjoy every moment.” Now aged 36, Mathieu has spent the past three seasons at Portuguese giants Sporting CP and his plan to hang up his boots at the end of the campaign has now been brought forward due to injury. The Frenchman arrived at the Blaugrana from Valencia in 2014 after Carles Puyol confirmed his retirement, but he never lived up to expectations. Signed as a left-footed defensive partner for the more elegant and ball-playing Gerard Pique, Mathieu’s three years at the Catalan club were hugely frustrating and he joined Sporting CP on a free transfer in 2017. “It’s hard to say goodbye like this,” Mathieu explains to his teammates, as cited by Mundo Deportivo. “I would have liked to play one last time at home, but life goes on.Advertisement Former Barcelona and Valencia defender Jeremy Mathieu has spoken about his decision to retire from football after suffering a serious knee injury. Loading…
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