MPI File Functions

In this section

• MPI_File_close
  Closes a file.

• MPI_File_delete
  Deletes a file.

• MPI_File_get_amode
  Returns the file access mode.

• MPI_File_get_atomicity
  Returns the atomicity mode.

• MPI_File_get_byte_offset
  Returns the absolute byte position in the file corresponding to "offset" etypes relative to the current view.

• MPI_File_get_group
  Returns the group of processes that opened the file.

• MPI_File_get_info
  Returns the hints for a file that are actually being used by MPI.

• MPI_File_get_position
  Returns the current position of the individual file pointer in etype units relative to the current view.

• MPI_File_get_position_shared
  Returns the current position of the shared file pointer in etype units relative to the current view.

• MPI_File_get_size
  Returns the file size.

• MPI_File_get_type_extent
  Returns the extent of datatype in the file.

• MPI_File_get_view
  Returns the file view.

• MPI_File_iread
  Nonblocking read using individual file pointer.

• MPI_File_iread_at
  Nonblocking read using explict offset.

• MPI_File_iread_shared
  Nonblocking read using shared file pointer.

• MPI_File_iwrite
  Nonblocking write using individual file pointer.

• MPI_File_iwrite_at
  Nonblocking write using explict offset.

• MPI_File_iwrite_shared
  Nonblocking write using shared file pointer.

• MPI_File_open
  Opens a file.

• MPI_File_preallocate
  Preallocates storage space for a file.

• MPI_File_read
  Read using individual file pointer.

• MPI_File_read_all
  Collective read using individual file pointer.

• MPI_File_read_all_begin
  Begin a split collective read using individual file pointer.

• MPI_File_read_all_end
  Complete a split collective read using individual file pointer.

• MPI_File_read_at
  Read using explict offset.

• MPI_File_read_at_all
  Collective read using explict offset.

• MPI_File_read_at_all_begin
  Begin a split collective read using explict offset.

• MPI_File_read_at_all_end
  Complete a split collective read using explict offset.

• MPI_File_read_ordered
  Collective read using shared file pointer.

• MPI_File_read_ordered_begin
  Begin a split collective read using shared file pointer.

• MPI_File_read_ordered_end
  Complete a split collective read using shared file pointer.

• MPI_File_read_shared
  Read using shared file pointer.

• MPI_File_seek
  Updates the individual file pointer.

• MPI_File_seek_shared
  Updates the shared file pointer.

• MPI_File_set_atomicity
  Sets the atomicity mode.

• MPI_File_set_info
  Sets new values for the hints associated with a file.

• MPI_File_set_size
  Sets the file size.

• MPI_File_set_view
  Sets the file view.

• MPI_File_sync
  Causes all previous writes to be transferred to the storage device.

• MPI_File_write
  Write using individual file pointer.

• MPI_File_write_all
  Collective write using individual file pointer.

• MPI_File_write_all_begin
  Begin a split collective write using individual file pointer.

• MPI_File_write_all_end
  Complete a split collective write using individual file pointer.

• MPI_File_write_at
  Write using explict offset.

• MPI_File_write_at_all
  Collective write using explict offset.

• MPI_File_write_at_all_begin
  Begin a split collective write using explict offset.

• MPI_File_write_at_all_end
  Complete a split collective write using explict offset.

• MPI_File_write_ordered
  Collective write using shared file pointer.

• MPI_File_write_ordered_begin
  Begin a split collective write using shared file pointer.

• MPI_File_write_ordered_end
  Complete a split collective write using shared file pointer.

• MPI_File_write_shared
  Write using shared file pointer.

• MPI_Register_datarep
  Register a set of user-provided data conversion.

• MPI_Datarep_conversion_function
  This function is a place holder for the user-defind functions to converts from file data representation to native representation and vice versa.

• MPI_Datarep_extent_function
  This function is a placeholder for user-defined extent callback functions.