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Exercises

1
What is the largest size of SIZE, for which MPI_Type_construct_darray is still going to work? Test it using the program discussed in section 5.3.4.
2
Would it help if we replaced MPI_INT with a more elaborate structure that would contain more data?
3
The restriction on the extent of file_type in section 5.3.4 does not imply the restriction on the size of the file. It is only a restriction on the amount of data that can be written on the file in a single MPI_File_write operation. But this operation can be repeated. Rewrite the program discussed in section 5.3.4 in the following way:


next up previous index
Next: File Hints Up: File Views Previous: The Discussion
Zdzislaw Meglicki
2004-04-29