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.TH "MPI_T_PVAR_RESET" "3" "Sep 23, 2026" "" "Open MPI"
.sp
MPI_T_pvar_reset — Reset the value of a performance variable
.SH SYNTAX
.SS C Syntax
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.INDENT 3.5
.sp
.EX
#include <mpi.h>

int MPI_T_pvar_reset(MPI_T_pvar_session session, MPI_T_pvar_handle handle)
.EE
.UNINDENT
.UNINDENT
.SH INPUT PARAMETERS
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.IP \(bu 2
\fBsession\fP: Performance experiment session.
.IP \(bu 2
\fBhandle\fP: Performance variable handle or MPI_T_PVAR_ALL_HANDLES.
.UNINDENT
.SH DESCRIPTION
.sp
MPI_T_pvar_reset sets the performance variable specified by the handle
in \fIhandle\fP to its initial value. The special value
MPI_T_PVAR_ALL_HANDLES can be passed in \fIhandle\fP to reset all read\-write
handles in the session specified in \fIsession\fP\&.
.SH ERRORS
.sp
MPI_T_pvar_reset 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_HANDLE\fP: The handle is invalid
.IP \(bu 2
\fBMPI_T_ERR_INVALID_SESSION\fP: Session argument is not a valid session
.IP \(bu 2
\fBMPI_T_ERR_PVAR_NO_WRITE\fP: Variable cannot be reset
.UNINDENT
.sp
\fBSee also:\fP
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.INDENT 3.5
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.IP \(bu 2
MPI_T_pvar_handle_alloc \%<#\:mpi-t-pvar-handle-alloc>
.IP \(bu 2
MPI_T_pvar_get_info \%<#\:mpi-t-pvar-get-info>
.IP \(bu 2
MPI_T_pvar_session_create \%<#\:mpi-t-pvar-session-create>
.IP \(bu 2
MPI_T_pvar_write \%<#\:mpi-t-pvar-write>
.UNINDENT
.UNINDENT
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.SH Copyright
2003-2026, The Open MPI Community
.\" End of generated man page.