MPI_Info_get - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI

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NAMEMPI_Info_get − Retrieves the value associated with a key in an info object.

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SYNTAX

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C Syntax#include <mpi.h> int MPI_Info_get(MPI_Info info, const char *key, int valuelen, char *value, int *flag)

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Fortran SyntaxINCLUDE 'mpif.h' MPI_INFO_GET(INFO, KEY, VALUELEN, VALUE, FLAG, IERROR) INTEGER INFO, VALUELEN, IERROR CHARACTER*(*) KEY, VALUE LOGICAL FLAG

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C++ Syntax#include <mpi.h> bool MPI::Info::Get(const char* key, int valuelen, char* value) const

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INPUT PARAMETERSinfo  Info object (handle). key  Key (string). valuelen  Length of value arg (integer).

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OUTPUT PARAMETERvalue  Value (string). flag  Returns true if key defined, false if not (boolean). IERROR  Fortran only: Error status (integer).

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DESCRIPTIONMPI_Info_get retrieves the value associated with key in a previous call to MPI_Info_set. If such a key exists, it sets flag to true and returns the value in value; otherwise it sets flag to false and leaves value unchanged. valuelen is the number of characters available in value. If it is less than the actual size of the value, the returned value is truncated. In C, valuelen should be one less than the amount of allocated space to allow for the null terminator. If key is larger than MPI_MAX_INFO_KEY, the call is erroneous.

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ERRORSAlmost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object. Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

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SEE ALSO.ft r MPI_Info_create
MPI_Info_delete
MPI_Info_dup
MPI_Info_free
MPI_Info_get_valuelen
MPI_Info_get_nkeys
MPI_Info_get_nthkey
MPI_Info_set
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ERROR : Need New Coding :         (rof_ft|15|MPI_Info_get.3|76|r|.ft r )    

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