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Created page with "=== Utiliser les vues ==="
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=== | === Utiliser les vues === | ||
Using views, each process can ''see'' a section of the file, as if it were the entire file. In this way it is no longer necessary to compute the file offsets as a function of the process rank. Once the view is defined, it is then a lot simpler to perform operations on this file, without risking conflicts with operations performed by other processes. A view is defined using the function [http://www.open-mpi.org/doc/current/man3/MPI_File_set_view.3.php MPI_File_set_view]. Here is a program identical to the previous example, but using views instead. | Using views, each process can ''see'' a section of the file, as if it were the entire file. In this way it is no longer necessary to compute the file offsets as a function of the process rank. Once the view is defined, it is then a lot simpler to perform operations on this file, without risking conflicts with operations performed by other processes. A view is defined using the function [http://www.open-mpi.org/doc/current/man3/MPI_File_set_view.3.php MPI_File_set_view]. Here is a program identical to the previous example, but using views instead. | ||