Input

S3L_set_process_grid accepts the following arguments as input:

• rank - Specifies the number of dimensions the array will have. The range of legal values for rank is 1 <= rank <= 31.

• majorness - Use one of the following predefined values to specify the order of loop execution:

  • S3L_MAJOR_ROW - Rightmost axis varies fastest.

  • S3L_MAJOR_COLUMN - Leftmost axis varies fastest.

• grid_extents - Integer array whose length equals the rank of the process grid. It contains a list of process grid extents. Each element in the array specifies the extent of the corresponding process grid axis. Note that axis indexing is zero-based for the C/C++ interface and one-based for the F77/F90 interface, as follows:

  • When called from a C or C++ application, the first element of grid_extents corresponds to axis 0, the second element to axis 1, and so forth.

  • When called from an F77 or F90 application, the first element corresponds to axis 1, the second to axis 2, and so forth.

• plist_length - Specifies the length of the process. In C/C++ programs, if the process_list argument is a NULL pointer, plist_length must be 0.

• process_list - Integer array whose length equals the number of processes in the grid. It contains a list of processes. For C/C++ programs, if process_list is a NULL pointer, plist_length must be 0.