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.TH MPI_T_category_get_info 3 "11/12/2019" " " "MPI"
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.SH NAME
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MPI_T_category_get_info \- Get the information about a category
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.SH SYNOPSIS
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.nf
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int MPI_T_category_get_info(int cat_index, char *name, int *name_len, char *desc,
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int *desc_len, int *num_cvars, int *num_pvars, int *num_categories)
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.fi
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.SH INPUT/OUTPUT PARAMETERS
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.PD 0
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.TP
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.B name_len
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- length of the string and/or buffer for name (integer)
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.PD 1
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.PD 0
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.TP
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.B desc_len
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- length of the string and/or buffer for desc (integer)
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.PD 1
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.SH INPUT PARAMETERS
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.PD 0
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.TP
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.B cat_index
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- index of the category to be queried (integer)
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.PD 1
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.SH OUTPUT PARAMETERS
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.PD 0
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.TP
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.B name
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- buffer to return the string containing the name of the category (string)
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.PD 1
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.PD 0
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.TP
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.B desc
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- buffer to return the string containing the description of the category (string)
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.PD 1
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.PD 0
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.TP
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.B num_cvars
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- number of control variables contained in the category (integer)
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.PD 1
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.PD 0
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.TP
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.B num_pvars
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- number of performance variables contained in the category (integer)
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.PD 1
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.PD 0
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.TP
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.B num_categories
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- number of categories contained in the category (integer)
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.PD 1
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.SH THREAD AND INTERRUPT SAFETY
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This routine is thread-safe. This means that this routine may be
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safely used by multiple threads without the need for any user-provided
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thread locks. However, the routine is not interrupt safe. Typically,
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this is due to the use of memory allocation routines such as
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.I malloc
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or other non-MPICH runtime routines that are themselves not interrupt-safe.
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.SH ERRORS
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All MPI routines (except
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.I MPI_Wtime
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and
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.I MPI_Wtick
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) return an error value;
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C routines as the value of the function and Fortran routines in the last
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argument. Before the value is returned, the current MPI error handler is
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called. By default, this error handler aborts the MPI job. The error handler
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may be changed with
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.I MPI_Comm_set_errhandler
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(for communicators),
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.I MPI_File_set_errhandler
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(for files), and
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.I MPI_Win_set_errhandler
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(for
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RMA windows). The MPI-1 routine
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.I MPI_Errhandler_set
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may be used but
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its use is deprecated. The predefined error handler
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.I MPI_ERRORS_RETURN
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may be used to cause error values to be returned.
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Note that MPI does
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.B not
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guarentee that an MPI program can continue past
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an error; however, MPI implementations will attempt to continue whenever
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possible.
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.PD 0
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.TP
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.B MPI_SUCCESS
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- No error; MPI routine completed successfully.
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.PD 1
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.PD 0
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.TP
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.B MPI_T_ERR_NOT_INITIALIZED
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- The MPI tool information interface is not initialized.
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.PD 1
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.PD 0
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.TP
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.B MPI_T_ERR_INVALID_INDEX
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- Index is invalid or has been deleted.
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.PD 1
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