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

Who is NetApp?  $6.2B, Fortune 500 storage and data management company.  Founded in  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 2 NetApp Confidential - Internal Use Only

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 services, telephone companies, and Internet sites run on NetApp. 3 NetApp Confidential - Internal Use Only

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 4 NetApp Confidential - Internal Use Only

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. 5 NetApp Confidential - Internal Use Only

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? 6 NetApp Confidential - Internal Use Only

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. 7 NetApp Confidential - Internal Use Only

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? 8 NetApp Confidential - Internal Use Only

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) 9 NetApp Confidential - Internal Use Only

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.  , instant messenger, and telephone communication can be used between scheduled meetings at all times.  NetApp Mentors on campus for final presentation. 10 NetApp Confidential - Internal Use Only

Questions?  Tony DeLuca: –University of Pittsburgh CS  Phil Ezolt: –Carnegie Mellon ECE – 1998 –Harvard MCS

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