MPI\_Info\_create, MPI\_Info\_free, MPI\_Info\_get, MPI\_Info\_set APIs
Many MPI APIs take an info argument for additional information passing. An info is an object which consists of many (key,value) pairs. Rmpi uses an internal memory to store an info object.
mpi.info.create
creates a new info object.
mpi.info.free
frees an info object and sets it to MPI\_INFO\_NULL.
mpi.info.get
retrieves the value associated with key in an info.
mpi.info.set
adds the key and value pair to info.
mpi.info.create(info = 0) mpi.info.free(info = 0) mpi.info.get(info = 0, key, valuelen) mpi.info.set(info = 0, key, value)
info |
an info number. |
key |
a char (length 1). |
valuelen |
the length (nchar) of a key |
value |
a char (length 1). |
mpi.info.create
, mpi.info.free
, and mpi.info.set
return
1 if success and 0 otherwise.
mpi.info.get
returns the value (a char) for a given info and valuelen.
Hao Yu
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