MPI_T_cvar_read(3) Open MPI MPI_T_cvar_read(3)

MPI_T_cvar_read - Read the value of a control variable

#include <mpi.h>
int MPI_T_cvar_read(MPI_T_cvar_handle handle, const void *buf)

Handle of the control variable to be read.
Initial address of storage location for variable value.

MPI_T_cvar_read reads the value of the control variable identified by the handle specified in handle and stores the value in the buffer pointed to by buf. The caller must ensure that the buffer pointed to by buf is large enough to hold the entire value of the control variable.

MPI_T_cvar_read() will fail if:

[MPI_T_ERR_NOT_INITIALIZED]
The MPI Tools interface not initialized
[MPI_T_ERR_INVALID_HANDLE]
The handle is invalid

MPI_T_cvar_handle_alloc
MPI_T_cvar_get_info
May 26, 2022 4.1.4