Write/Save the I/O decomposition.
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| subroutine | spio_decomp::pio_readdof_int (fname, ndims, gdims, map, comm, ierr) |
| | Read an I/O decomposition from a file (saved using PIO_writedof()) More...
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| subroutine | spio_decomp::pio_readdof_offset (fname, ndims, gdims, map, comm, ierr) |
| | Read an I/O decomposition from a file (saved using PIO_writedof()) More...
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Write/Save the I/O decomposition.
◆ pio_readdof_int()
| subroutine spio_decomp::pio_readdof_int |
( |
character(len=*), intent(in) |
fname, |
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integer, intent(out) |
ndims, |
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integer, dimension(:), intent(out), pointer |
gdims, |
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integer(i4), dimension(:), intent(out), pointer |
map, |
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|
integer, intent(in) |
comm, |
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integer, intent(out), optional |
ierr |
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) |
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Read an I/O decomposition from a file (saved using PIO_writedof())
- Parameters
-
| [in] | fname | The name of the input file with the I/O decomposition |
| [out] | ndims | The number of dimensions in the I/O decomposition is returned in this arg |
| [out] | gdims | Pointer to a 1D array where the global dimensions of the I/O decomposition will be saved. The array is allocated by the library |
| [out] | map | Pointer to a 1D array where the I/O decomposition mapping (between the local data index and the global linearized index for each local data element) will be saved. The array is allocated by the library e.g. If after partitioning the local array contains A(2,3) and A(3,3) of an array A[4x4], the map will contain [10, 11] corrsponding to the linearized indices of A(2,3) & A(3,3) |
| [in] | comm | The MPI communicator (that contains the MPI processes in the I/O system associated with the I/O decomposition) |
| [out] | ierr | (Optional) : The error return code. Set to PIO_NOERR on success, or an error code otherwise (See PIO_seterrorhandling for more information on how to customize/set error handling) |
◆ pio_readdof_offset()
| subroutine spio_decomp::pio_readdof_offset |
( |
character(len=*), intent(in) |
fname, |
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|
integer, intent(out) |
ndims, |
|
|
integer, dimension(:), intent(out), pointer |
gdims, |
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integer(pio_offset_kind), dimension(:), intent(out), pointer |
map, |
|
|
integer, intent(in) |
comm, |
|
|
integer, intent(out), optional |
ierr |
|
) |
| |
Read an I/O decomposition from a file (saved using PIO_writedof())
- Parameters
-
| [in] | fname | The name of the input file with the I/O decomposition |
| [out] | ndims | The number of dimensions in the I/O decomposition is returned in this arg |
| [out] | gdims | Pointer to a 1D array where the global dimensions of the I/O decomposition will be saved. The array is allocated by the library |
| [out] | map | Pointer to a 1D array where the I/O decomposition mapping (between the local data index and the global linearized index for each local data element) will be saved. The array is allocated by the library e.g. If after partitioning the local array contains A(2,3) and A(3,3) of an array A[4x4], the map will contain [10, 11] corrsponding to the linearized indices of A(2,3) & A(3,3) |
| [in] | comm | The MPI communicator (that contains the MPI processes in the I/O system associated with the I/O decomposition) |
| [out] | ierr | (Optional) : The error return code. Set to PIO_NOERR on success, or an error code otherwise (See PIO_seterrorhandling for more information on how to customize/set error handling) |
