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Hdf rm anchor
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Retrieves the atomicity mode in use

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Hdf rm anchor
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Procedure:
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H5F_GET_MPI_ATOMICITY (file_id, flag)

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Signature:
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<pre><code class="language-c">herr_t H5Fget_mpi_atomicity( hid_t file_id, hbool_t *flag )</code></pre>
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<pre><code class="language-fortran">SUBROUTINE h5fget_mpi_atomicity_f(file_id, flag, hdferr) 
  IMPLICIT NONE
  INTEGER(HID_T), INTENT(IN) :: file_id ! File identifier
  INTEGER(HBOOL_T), INTENT(OUT) :: flag ! Atomicity flag
  INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                        ! 0 on success, -1 on failure
END SUBROUTINE h5fget_mpi_atomicity_f </code></pre>

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Parameters:
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hid_t file_idIN: HDF5 file identifier
hbool_t *flagOUT: Logical flag for atomicity setting 
Valid values are:
  • TRUE    (1)  MPI file access is set to atomic mode.
  • FALSE   (0)   MPI file access is set to nonatomic mode.

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Description:
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H5F_GET_MPI_ATOMICITY retrieves the current consistency semantics mode for data access for the file file_id.

Upon successful return, flag will be set to TRUE if to 1 if file access is set to atomic mode and FALSE if and 0 if file access is set to nonatomic mode.

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Returns:
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Returns a non-negative value if successful; otherwise returns a negative value. 

See Also:
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Enabling a Strict Consistency Semantics Model in Parallel HDF5

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Example:
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filepathfortran/examples/compound.f90
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History:
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Release    Change
1.8.9C function and Fortran subroutine introduced in this release