The following default communicator names are defined by MPI.
"MPI_COMM_WORLD"
"MPI_COMM_SELF"
"MPI_COMM_PARENT"
"MPI_COMM_NULL"
Named predefined datatypes have the default names of the datatype name.
In addition, the following default datatype name is defined by MPI.
"MPI_DATATYPE_NULL"
The following default window name is defined by MPI.
"MPI_WIN_NULL"
The following data representations are supported by MPI.
"native"
"internal"
"external32"
| Process set name | Comment |
| "mpi://" | reserved namespace |
| "mpi://SELF" | mandatory process set name |
| "mpi://WORLD" | mandatory process set name |
The following info keys are reserved. They are strings.
access_style
accumulate_ops
accumulate_ordering
alloc_shared_noncontig
appnum
arch
argv
cb_block_size
cb_buffer_size
cb_nodes
chunked_item
chunked_size
chunked
collective_buffering
command
file
file_perm
filename
host
io_node_list
ip_address
ip_port
maxprocs
mpi_accumulate_granularity
mpi_assert_allow_overtaking
mpi_assert_exact_length
mpi_assert_memory_alloc_kinds
mpi_assert_no_any_source
mpi_assert_no_any_tag
mpi_hw_resource_type
mpi_initial_errhandler
mpi_memory_alloc_kinds
mpi_minimum_memory_alignment
mpi_pset_name
mpi_size
nb_proc
no_locks
num_io_nodes
path
same_disp_unit
same_size
soft
striping_factor
striping_unit
thread_level
wdir
The following info values are reserved. They are strings.
alloc_mem
false
mpi
mpi_errors_abort
mpi_errors_are_fatal
mpi_errors_return
mpi_shared_memory
MPI_THREAD_FUNNELED
MPI_THREAD_MULTIPLE
MPI_THREAD_SERIALIZED
MPI_THREAD_SINGLE
none
random
rar
raw
read_mostly
read_once
reverse_sequential
same_op
same_op_no_op
sequential
system
true
war
waw
win_allocate
win_allocate_shared
write_mostly
write_once