Lecture Concurrency Control Pdf Lecture in the "program analysis" course by prof. dr. michael pradel at university of stuttgart in winter semester 2020 21 see course page for more information:. Why bother with concurrency? the free lunch provided by moore’s law is over cpu clock speeds stopped to increase around 2005 instead, multi core processors became mainstream need concurrent programs to make full use of the hardware many real world problems are inherently concurrent, e.g., ons done on huge data often ”embarrasingly parallel”.

Lecture 1 Pdf Concurrency a version of the program that executes multiple tasks simultaneously example: our web server could execute multiple queries at the same time while one is waiting for i o, another can be executing on the cpu example: execute queries one at a time, but issue i o requests against different files disks simultaneously. Lecture 5 9 concurrent programming issues of concurrency, properties for the concurrent programs, mutual exclusion protocols, synchronization primitives, concurrent objects and their properties. We can distinguish between: whether the concurrency is required (by the speci cation) or optional (a design choice made by the programmer); the granularity of the concurrent program, application or system; and how the concurrency is implemented. Program analysis is the systematic examination of a program to determine its properties. tractable, systematic ways to reason over those representations. how to unambiguously define the meaning of a program, and a programming language. how to prove theorems about the behavior of particular programs.

Lecture1 1 Pdf We can distinguish between: whether the concurrency is required (by the speci cation) or optional (a design choice made by the programmer); the granularity of the concurrent program, application or system; and how the concurrency is implemented. Program analysis is the systematic examination of a program to determine its properties. tractable, systematic ways to reason over those representations. how to unambiguously define the meaning of a program, and a programming language. how to prove theorems about the behavior of particular programs. In this course we will mostly use concurrency and parallelism as synonyms. however, they refer to similar but different concepts: parallelism: efficient execution of fractions of a complex task on multiple processing units (physical parallelism). Is my program intended program corect? behave as intended? behavior? how to detect surprising behavior? =) formal analysis. Analyze the program with or without executing! why? study? give guarantees about the correctness of program optimization, effectiveness of program optimization, program safety, and so on. used by compilers, debuggers, verifiers, ides, profilers. Program analysis analyzing concurrent programs (part 1) prof. dr. michael pradel software lab, university of stuttgart winter 2020 2021.

Lecture 3 1 Pdf Concurrency Computer Science Cybernetics In this course we will mostly use concurrency and parallelism as synonyms. however, they refer to similar but different concepts: parallelism: efficient execution of fractions of a complex task on multiple processing units (physical parallelism). Is my program intended program corect? behave as intended? behavior? how to detect surprising behavior? =) formal analysis. Analyze the program with or without executing! why? study? give guarantees about the correctness of program optimization, effectiveness of program optimization, program safety, and so on. used by compilers, debuggers, verifiers, ides, profilers. Program analysis analyzing concurrent programs (part 1) prof. dr. michael pradel software lab, university of stuttgart winter 2020 2021.