usually with same runtime operations  Beware: Avoid speedup-only results (need absolute numbers for grounding)  #2 Additional Baselines  Alternative systems w/ different runtime and compiler  Usually Experiments and Result Presentation Runtime What are the units? Where are the tics? Runtime [s] 80 90 100 Yours Mine This is a misleading y axis Runtime [s] 0 50 100 Yours Mine Aha, so

iterator that yields a value each time it executes a yield statement. After it yields a value, the runtime state of the generator function is suspended until the next value is needed. Pros: Simpler code of the file is poor practice, for several reasons: 25 • There are no guarantees as to when the runtime will actually run the file’s destructor. Different Python implementations use different memory management

different projects have a class Foo in the global scope, these symbols may collide at compile time or at runtime. If each project places their code in a namespace, project1::Foo and project2::Foo are now distinct an object at run-time frequently means a design problem. Needing to know the type of an object at runtime is often an indication that the design of your class hierarchy is flawed. Undisciplined use of RTTI

2012-2018 IBM Research – Almaden, USA  Declarative large-scale machine learning  Optimizer and runtime of Apache SystemML  2011 PhD TU Dresden, Germany  Cost-based optimization of integration flows