MPI_WTICK(3)

💅 MPI_Wtick — bestie, this is literally the resolution of MPI_Wtime

okay so real quick — you're looking at the Open MPI manual page for MPI_Wtick (that's MPI_WTICK(3) if you're being formal 💅). It's a tiny little function with one job and honestly it eats. Let's get into it ✨

---

🌸 SYNTAX 🌸

✨ C Syntax

#include <mpi.h>

double MPI_Wtick()

🎀 Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
DOUBLE PRECISION MPI_WTICK()

🦋 Fortran 2008 Syntax

USE mpi_f08
DOUBLE PRECISION MPI_WTICK()

---

💖 RETURN VALUE 💖

It hands you back the time, in seconds, of the resolution of MPI_Wtime. That's it. That's the whole return value. Simple queen behavior 👑

---

🌈 DESCRIPTION 🌈

So MPI_Wtick returns the resolution of MPI_Wtime in seconds — i.e. it returns, as a double-precision value</>, the number of seconds between successive clock ticks. Clock tea ☕️

Like, picture this: if the clock is implemented by the hardware as a counter that gets incremented every millisecond, then the value returned by MPI_Wtick should be 10^-3. Math icon behavior, no cap 🧮✨

---

⭐ NOTE ⭐

🫶 heads up bestie: this function does not return an error value. So if you call it before MPI_Init or after MPI_Finalize, the result is undefined — genuinely no vibe check possible there, so don't come for me 😭💀

SEE ALSO:

• MPI_Wtime

---

👑 COPYRIGHT 👑

So this whole thing is © 2003-2026, The Open MPI Community. Iconic, protected, slay 💅

---

and that's the page!! 🎀🦋 a lil sign-off for you: this was the Open MPI MPI_WTICK(3) page, dated Sep 11, 2026 — that's the source/version and date, folded in cute just for you, bestie 🫶✨ go forth and time things 💖