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MPI_Wtime(3) MPI MPI_Wtime(3)

MPI_Wtime - Returns an elapsed time on the calling processor

double MPI_Wtime(void)

Time in seconds since an arbitrary time in the past.

This is intended to be a high-resolution, elapsed (or wall) clock. See MPI_WTICK to determine the resolution of MPI_WTIME .

If the attribute MPI_WTIME_IS_GLOBAL is defined and true, then the value is synchronized across all processes in MPI_COMM_WORLD .

This is a function, declared as DOUBLE PRECISION MPI_WTIME() in Fortran.

also: MPI_Wtick, MPI_Comm_get_attr, MPI_Attr_get
12/16/2021

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