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How can Parallel HDF5 APIs be called (collectively, independently)?
Here is a list of the APIs. See the end for how to interpret the numbers and letters associated with each API.
Collective Functions:
H5Aclose (2) H5Acreate/H5Acreate1/H5Acreate2 (6) (10) H5Acreate_by_name (6) (10) (B) H5Adelete H5Adelete_by_idx (B) H5Adelete_by_name (B) H5Arename (A) H5Arename_by_name (B) H5Awrite (3) H5Dclose (2) H5Dcreate/H5Dcreate1/H5Dcreate2 (6) (10) H5Dcreate_anon (6) (10) (B) H5Dextend (5) (11) H5Dset_extent (5) (11) (A) H5Fclose (1) H5Fcreate (9) (10) H5Fflush H5Fmount H5Fopen (10) H5Freopen H5Funmount H5Gclose (2) H5Gcreate/H5Gcreate1/H5Gcreate2 (9) (10) H5Gcreate_anon (9) (10) (B) H5Glink H5Glink2 (A) H5Gmove H5Gmove2 (A) H5Gset_comment H5Gunlink H5Idec_ref (7) (A) H5Iinc_ref (7) (A) H5Lcopy (B) H5Lcreate_external (9) (B) H5Lcreate_hard (9) (B) H5Lcreate_soft (9) (B) H5Lcreate_ud (9) (B) H5Ldelete (B) H5Ldelete_by_idx (B) H5Lmove (B) H5Oclose (2) (B) H5Ocopy (B) H5Odecr_refcount (B) H5Oincr_refcount (B) H5Olink (B) H5Oset_comment (B) H5Oset_comment_by_name (B) H5Rcreate H5Tclose (4) H5Tcommit/H5Tcommit1/H5Tcommit2 (9) (10) H5Tcommit_anon (9) (10) (B)
These routines may be called independently, if the object will not be modified:
H5Aopen (10) (B) H5Aopen_by_idx (10) (B) H5Aopen_by_name (10) (B) H5Aopen_idx (10) H5Aopen_name (10) H5Dopen/H5Dopen1/H5Dopen2 (10) (12) H5Gopen/H5Gopen1/H5Gopen2 (10) H5Iget_file_id (B) H5Oopen (10) (B) H5Oopen_by_addr (10) (B) H5Oopen_by_idx (10) (B) H5Rdereference H5Topen/H5Topen1/H5Topen2 (10) Additionally, these properties must be set to the same values when they are used in a parallel program: Dataset Creation Properties: H5Pmodify_filter (B) H5Premove_filter (B) H5Pset_alloc_time H5Pset_chunk H5Pset_deflate H5Pset_external H5Pset_fill_time H5Pset_fill_value H5Pset_filter H5Pset_fletcher32 (B) H5Pset_layout H5Pset_nbit (B) H5Pset_shuffle H5Pset_szip Dataset Transfer Properties: H5Pset_btree_ratios H5Pset_buffer H5Pset_dxpl_mpio H5Pset_hyper_cache H5Pset_preserve File Access Properties: H5Pset_alignment H5Pset_cache H5Pset_fapl_mpio H5Pset_fclose_degree H5Pset_gc_references H5Pset_latest_format (B) H5Pset_libver_bounds (B) H5Pset_mdc_config (B) H5Pset_meta_block_size H5Pset_small_data_block_size H5Pset_sieve_buf_size File Creation Properties: H5Pset_istore_k H5Pset_shared_mesg_index (B) H5Pset_shared_mesg_nindexes (B) H5Pset_shared_mesg_phase_change (B) H5Pset_sizes H5Pset_sym_k H5Pset_userblock Group Creation Properties: H5Pset_est_link_info (B) H5Pset_link_creation_order (B) H5Pset_link_phase_change (B) H5Pset_local_heap_size_hint (B) Link Creation Properties: H5Pset_char_encoding (B) H5Pset_create_intermediate_group (B) Object Creation Properties: H5Pset_attr_phase_change (B) H5Pset_attr_creation_order (B) H5Pset_obj_track_times (B) Object Copy Properties: H5Pset_copy_object (B)
Notes:
(1) - All the processes must participate only if this is the last reference to the file ID. (2) - All the processes must participate only if all the file IDs for a file have been closed and this is the last outstanding object ID. (3) - Because the raw data for an attribute is cached locally, all processes must participate in order to guarantee that future H5Aread calls return the correct results on all processes. (4) - All processes must participate only if the datatype is for a committed datatype, all the file IDs for the file have been closed and this is the last outstanding object ID. (5) - All processes must participate only if the number of chunks in the dataset actually changes. (6) - All processes must use the same datatype, dataspace and creation properties. (7) - This function may be called independently if the object ID does not refer to an object that was collectively opened. (9) - All processes must use the same creation properties. (10) - All processes must use the same access properties. (11) - All processes must use the same dataspace dimensions (12) - If modifying attributes, then these calls must be collective. (A) - Available only in v1.6 or later versions of the library. (B) - Available only in v1.8 or later versions of the library.
- - Last modified: 13 February 2014