Скачать или смотреть Message-passing programming with MPI, Part 2 of Day 1

David Henty (EPCC)
17, 22 and 24 March 2021
https://www.archer2.ac.uk/training/co...

Day 1 Wednesday 17th March
09:30 Message-Passing Concepts
10:15 Practical: Parallel Traffic Modelling
11:00 Break
11:30 MPI Programs
12:00 MPI on ARCHER2
12:15 Practical: Hello World
13:00 Lunch
14:00 Point-to-Point Communication
14:45 Communicators, Tags and Modes
15:30 Break
16:00 Practical: Pi
17:00 Finish

The world’s largest supercomputers are used almost exclusively to run applications which are parallelised using Message Passing. The course covers all the basic knowledge required to write parallel programs using this programming model, and is directly applicable to almost every parallel computer architecture.

Parallel programming by definition involves co-operation between processes to solve a common task. The programmer has to define the tasks that will be executed by the processors, and also how these tasks are to synchronise and exchange data with one another. In the message-passing model the tasks are separate processes that communicate and synchronise by explicitly sending each other messages. All these parallel operations are performed via calls to some message-passing interface that is entirely responsible for interfacing with the physical communication network linking the actual processors together. This course uses the de facto standard for message passing, the Message Passing Interface (MPI). It covers point-to-point communication, non-blocking operations, derived datatypes, virtual topologies, collective communication and general design issues.