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.TH "MPI_T_PVAR_SESSION_FREE" "3" "Apr 11, 2024" "" "Open MPI"
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.INDENT 3.5
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.sp
\fI\%MPI_T_pvar_session_create\fP, \fI\%MPI_T_pvar_session_free\fP \- Create/free
performance variable session
.SH SYNTAX
.SS C Syntax
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.INDENT 3.5
.sp
.EX
#include <mpi.h>

int MPI_T_pvar_session_create(MPI_T_pvar_session *session)

int MPI_T_pvar_session_free(MPI_T_pvar_session *session)
.EE
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.UNINDENT
.SH DESCRIPTION
.sp
\fI\%MPI_T_pvar_session_create\fP creates a session for accessing performance
variables. The new session is returned in the \fIsession\fP parameter.
.sp
\fI\%MPI_T_pvar_session_free\fP releases a session allocated by
\fI\%MPI_T_pvar_session_create\fP and sets the \fIsession\fP parameter to
MPI_T_PVAR_SESSION_NULL.
.SH ERRORS
.sp
\fI\%MPI_T_pvar_session_create\fP will fail if:
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.IP \(bu 2
\fBMPI_T_ERR_NOT_INITIALIZED\fP: The MPI Tools interface not initialized
.IP \(bu 2
\fBMPI_T_ERR_MEMORY\fP: Out of memory
.IP \(bu 2
\fBMPI_T_ERR_OUT_OF_SESSIONS\fP: No more sessions available
.UNINDENT
.sp
\fI\%MPI_T_pvar_session_free\fP will fail if:
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.IP \(bu 2
\fBMPI_T_ERR_NOT_INITIALIZED\fP: The MPI Tools interface not initialized
.IP \(bu 2
\fBMPI_T_ERR_INVALID_SESSION\fP: The session parameter is not a valid session
.UNINDENT
.SH COPYRIGHT
2003-2024, The Open MPI Community
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