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InTheLoop | 10.13.2014

October 13, 2014

Big Data = Big Storage Challenges

NERSC stores a total of 100 Petabytes of scientific data, but it hasn't always been that way. When the center first opened its doors in 1974, files were typically measured in megabytes. In 1976, the center could store a whopping 19,200 megabytes of data, primarily on online disks and nine-track tapes. Learn how the changing role of data in science has shaped NERSC over the last 40 years and what it's likely to affect in years to come. »Read more.

Free Stress Management Workshops

UC CARE Services is offering two free, on-site stress management workshops over the lunch hour Tuesday and Wednesday. No registration required.

Developing Resilience
Tuesday, Oct. 14, 12 p.m. - 1 p.m.
Perseverance Hall, Cafeteria Bldg.

External stressors are real, yet how we choose to view, experience and manage them is an internal process. To maintain a healthy level of stress, we must cultivate an ability to remain flexible and open in order to adapt and adjust to challenges. This free, one-hour workshop will examine common traits of resilient people, and explore ways to strengthen our own resiliency skills. We introduce the concept of managing our energy instead of managing our time as the foundation for healthy practices, high performance, and sustained personal renewal. Participants will have the opportunity to

  • Define and discuss resilience,
  • Identify the common traits of resilient people, and
  • Assess their own level of resilience and identify steps to strengthen their skills.

Laurie Yamamoto is a senior counselor and a licensed clinical social worker from CARE Services. Laurie has a great deal of experience assisting employees who are experiencing change, or experiencing work or personal stress.

Getting Sleep: Misconceptions & Facts
Thursday, Oct. 16, 12 p.m. - 1 p.m.
Bldg. 2, Room 100B

Deep and restorative sleep is essential for physical and mental health, yet many people struggle to get enough of it. Sleep is literally one of life's health essentials.  The multitude of ways in which sleep helps rejuvenate the body and mind are still not fully understood, but the critical importance of sleep for overall health continues to gain scientific support. In order to get better sleep, it helps to better "get" sleep.

Craig Mielcarski, LCSW, CEAP is the director of UC Berkeley's CARE Services.

Maria Maroudas Going Away Potluck

Effective next week, Maria Maroudas will be joining the Operations HR Group as their new HR Division Partner supporting the Lab Directorate, OCFO and Public Affairs. Maria has been successfully partnering with Computing Sciences and IT since 2009, most recently in the areas of staffing, performance management, salary administration and policy guidance.

»Join us at noon on Thursday, Oct. 23 for a potluck to wish Maria well in her new endeavor. Please note that this is a change from the previously announced date due to a conflict with the Lab Runaround.

This Week's CS Seminars

»CS Seminars Calendar

Applied Mathematics: An Instability in the Standard Model Creates the Anomalous Acceleration Without Dark Energy

Wednesday, Oct. 15th, 3:30 p.m. – 4:30 p.m., 939 Evans Hall, UC Berkeley

Blake Temple, University of California, Davis

We introduce a new asymptotic ansatz for spherical perturbations of the Standard Model of Cosmology (SM) which applies during the p = 0 epoch, and prove that these perturbations trigger instabilities in the SM on the scale of the supernova data. These instabilities create a large, central region of uniform under-density which expands faster than the SM, and this central region of accelerated uniform expansion introduces into the SM precisely the same range of corrections to redshift vs lu- minosity as are produced by the cosmological constant in the theory of Dark Energy. A universal behavior is exhibited because all sufficiently small perturbations evolve to a single stable rest point. Moreover, we prove that these perturbations are consistent with, and the instability is triggered by, the one parameter family of self-similar waves which the authors previously proposed as possible time-asymptotic wave patterns for perturbations of the SM at the end of the radiation epoch. Using numerical simulations, we calculate the unique wave in the family that accounts for the same values of the Hubble constant and quadratic correction to redshift vs luminosity as in a universe with seventy per- cent Dark Energy, ΩΛ ≈ .7. A numerical simulation of the third order correction associated with that unique wave establishes a testable pre- diction that distinguishes this theory from the theory of Dark Energy. This explanation for the anomalous acceleration, based on instabilities in the SM together with simple wave perturbations from the radiation epoch that trigger them, provides perhaps the simplest mathematical explanation for the anomalous acceleration of the galaxies that does not invoke Dark Energy.

TRUST Security Seminar: U.S. Secret Service Electronic Crimes Task Force

Thursday, Oct. 16, 1 – 2 p.m., 250 Sutardja Dai Hall UC Berkeley
Scott Swantner, United States Secret Service

The U.S. Secret Service is mandated by Congress to investigate crimes against the United States Financial Infrastructure. This often includes investigating cybercrimes, to include network intrusions/breaches, and other fraudulent schemes perpetrated through electronic means. The Secret Service uses its regional Electronic Crimes Task Forces in executing this mission. Mandated by the Patriot Act in 2001, U.S. Secret Service Electronic Crimes Task Forces also conduct quarterly meetings with government, academia and private industry entities in an effort to share information regarding currently trends observed by all groups in cyber and electronic crimes.

CS Exascale Seminar: SoC for HPC: Open Ecosystems and System On Chip Technologies for Exascale Computing

Friday, Oct. 17, 11 a.m. – 12:30 p.m., 50B-4205
David Donofrio, Farzad Fatollahi-Fard and George Michelogiannakis, Future Technologies Group

Our current HPC ecosystem relies upon Commercial off-the-Shelf (COTS) building blocks to enable cost-effective design by sharing costs across a larger ecosystem. Modern HPC nodes use commodity chipsets and processor chips integrated together on custom motherboards. We are embarking upon a new era for commodity HPC where the chip acts as the "silicon motherboard" that interconnects commodity Intellectual Property (IP) circuit building blocks to create a complete integrated system-on-a-chip (SoC). This approach is still very much COTS, but the commodities are licensable IP for pre-verified circuit designs (the Lego blocks for SoC designs) rather than the chips. It achieves cost-competitiveness because the dominant cost of designing a chip is the cost of verifying the circuit building blocks. The cost benefits derive from the ability to leverage a commodity ecosystem of embedded IP logic components where the non-recurring expense (NRE) cost of designing and verifying a new processor or memory controller design (an IP building block) can be amortized by licensing the technology to myriad embedded applications. The market for licensed circuit IP in the embedded space is much larger marketplace (both in volume and total revenue) than for server chips and the market segment for SoC building blocks is growing at a far faster pace than the current server chip market. HPC system designers should leverage this new avenue for leveraging the cost-advantages of COTS technology.

Traditionally SoC design methods have focused on low-power consumer electronics or high performance embedded applications. But now SoC design methods are moving into high-end computing due to the emergence of embedded IP offering capable double-precision floating point, 64-bit address capability, and options for high performance I/O and memory interfaces. The SoC approach enables HPC chip designers to include features they need, and exclude features that are not required in a manner that is not feasible with today's commodity board-level computing system design. System on Chip (SoC) integration is able to further reduce power, increase integration density, and improve reliability. It also enables designers to minimize off-chip I/O by integrating peripheral functions, such as network interfaces and memory controllers by integrating the components onto a single chip. Furthermore, the embedded market has developed extraordinarily capable tools for rapidly prototyping, simulating, and synthesizing full SoC designs, with a much faster turn-around than we have come accustomed to for commodity server chip designs (many designs targeted at an 18 month design cycle for the hyper-competitive consumer market). By leveraging the enormous commodity IP market for design tools, processors, memory controllers, and I/O circuit designs, a chip designer can focus their effort and NRE costs on engineering handful of essential features that are not covered by the commodity ecosystem.

We will present an overview of the market forces, the value proposition, and the relevant technologies being used to create SoC's for HPC that were reviewed at the recent SOC for HPCworkshop (https://sites.google.com/a/lbl.gov/socforhpc/ ). Secondly, we will review LBNL's past work on Green Flash and Green Wave, first steps towards exploiting this emerging commodity ecosystem for HPC. Lastly, we present OpenSoC Fabric, an on-chip network generation infrastructure which aims to provide a parameterizable and powerful on-chip network generator for evaluating future high performance computing architectures based on SoC technology. OpenSoC Fabric leverages a new hardware DSL, Chisel, which contains powerful abstractions provided by its base language, Scala, and generates both software and hardware models, in the form of C++ and Verilog, from a single code base. The OpenSoC Fabric infrastructure is modeled after existing state-of-the-art simulators, offers a large and powerful collection of configuration options, and follows object-oriented design and functional programming to make functionality extension as easy as possible.


To begin AUDIO conference:
1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada)
2. International participants dial: Toll Number: 303-248-0285, or Toll-Free: http://www.readytalk.com/intl
3. Enter 7-digit access code: 4864508, followed by “#”
4. Place your phone on "Mute"

To begin WEB conference:
1. Go to: http://www.readytalk.com
2. Enter your access code: 4864508 under “PARTICIPANT-Join A Conference”