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University of Pittsburgh

University of Pittsburgh

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University of Pittsburgh

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  1. University of Pittsburgh Design Studio Project – Spring 2014 NetApp Confidential - Internal Use Only

  2. Who is NetApp? • $6.2B, Fortune 500 storage and data management company. • Founded in 1992. • 12,000 employees, 150+ worldwide offices, HQ: Sunnyvale, CA, Pittsburgh: 275. • Customers include energy, pharmaceutical, sports, entertainment, technology, cloud and many more. • 96% of Fortune 100 companies are customers of NetApp. • Data ONTAP – Storage OS NetApp Confidential - Internal Use Only

  3. Uses of NetApp • Energy companies like Chevron and Shell use NetApp innovations to explore for oil that will fuel your car. • Movies such as "Avatar" and "The Lord of the Rings" were created using NetApp products. • Pharmaceutical companies like Genentech use NetApp storage to develop the medications on which many of us depend. • Technology giants like SAP, Cisco, and TI develop their products and run their businesses on NetApp. • Popular e-mail services, telephone companies, and Internet sites run on NetApp. NetApp Confidential - Internal Use Only

  4. The Project – Memory Plumber Visualization • Memory Plumber is a tool used to pinpoint memory allocations that are causing over-usage or may be leaking. • Goal: Meaningful way to present this data allowing one to spot errors at a glance and / or discuss consumption. • Input: Stack traces • Output: Interactive interface NetApp Confidential - Internal Use Only

  5. Why is this important? • If our applications run out of memory, our customer can't use their filer. • But... keeping track of memory is hard. NetApp Confidential - Internal Use Only

  6. It doesn’t sound hard! • Imagine a process with >50 threads using C++ • Each doing different work. • Each allocating memory... Some through libraries/STL, some directly.. • At some point your process grows to 500M! • Who did it? Did they forget to free? Do they need to use so much? WHY? WHY? WHY? NetApp Confidential - Internal Use Only

  7. Enter memory plumber • Record the stack trace that led to EVERY allocation. • When asked, dump the stack traces for all outstanding allocations to a file. • When you're at 500M, ... now you can dump the file. NetApp Confidential - Internal Use Only

  8. BUT! Now we are drowning in data! • We have stack traces, but we have tens of thousands. • We need to organize, visualize, filter, resort, etc. • Do allocations flow through a single source line? • Do allocations flow through particular libraries? • Are there patterns? NetApp Confidential - Internal Use Only

  9. Project deliverables / updates • Plan • Specification (to be started at beginning of project and updated as project proceeds) • Periodic internal updates with class professor + grad student • Progress discussion • Next steps discussion • Working demo after first couple of weeks • Periodic / less frequent updates with NetApp • Presentations / Demonstrations • Project kick-off presentation (first few weeks into the project) • Pre mid-point presentation. • Post mid-point presentation (for extended NetApp Employees) • Pre-final presentation and demonstration (few weeks before final presentation… to be used to coach final presentation.) • Final presentation and demonstration (week prior to finals weeks) NetApp Confidential - Internal Use Only

  10. Mentor / Mentee Interaction • NetApp Mentors on campus for initial presentation to class. • Periodic (more that weekly) meeting with Professor and grad student • NetApp mentors on campus about every 3 weeks. • Email, instant messenger, and telephone communication can be used between scheduled meetings at all times. • NetApp Mentors on campus for final presentation. NetApp Confidential - Internal Use Only

  11. Questions? • Tony DeLuca: anthony.deluca@netapp.com • University of Pittsburgh CS -- 1995 • Phil Ezolt: phil.ezolt@netapp.com • Carnegie Mellon ECE – 1998 • Harvard MCS -- 2006

  12. NetApp Confidential - Internal Use Only