HPL_send(3)

💌 HPL_send(3) — sending a message, bestie edition

okay so this is a page from the HPL Library Functions manual, and honestly? it's giving "tiny wrapper, big vibes". let's get into it 🫶

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✨ NAME ✨

HPL_send — send a message. that's it. that's the whole job. iconic behavior honestly 💅

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🌸 SYNOPSIS 🌸

#include "hpl.h"

int HPL_send( double * SBUF, int SCOUNT, int DEST, int STAG, MPI_Comm
COMM );

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🦋 DESCRIPTION 🦋

okay so HPL_send is literally just a cute little wrapper around MPI_Send. no cap. its whole main character purpose is to let you do some experimentation / tuning of this simple routine — like, it's the lowkey test kitchen version of the thing 🔥

if it works, you get MPI_SUCCESS back as the error code. periodt.

and the way that it handles tiny messages… if the message length is less than or equal to zero, this function just returns immediately. not me ghosting the whole call 🍓

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💖 ARGUMENTS 💖

• SBUF — (local input) double * — on entry, SBUF specifies the starting address of the buffer to be sent. like, here's the goods, bestie 📦
• SCOUNT — (local input) int — on entry, SCOUNT specifies the number of double precision entries in SBUF. SCOUNT must be at least zero. so like, zero is fine, negative is not — know your limits ✨
• DEST — (local input) int — on entry, DEST specifies the rank of the receiving process in the communication space defined by COMM. basically who's getting this DM 👀
• STAG — (local input) int — on entry, STAG specifies the message tag to be used for this communication operation. it's the little label so your messages don't get confused with each other 🎀
• COMM — (local input) MPI_Comm — the MPI communicator identifying the communication space. this is the group chat. the whole friend group. the squad 🌈

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👑 SEE ALSO 👑

• HPL_recv (3)
• HPL_sendrecv (3)

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ngl this one is short and sweet, but every single detail still matters. respect the wrapper 🙈

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and that's the whole page, bestie 💜 this was HPL 2.2, dated February 24, 2016 — so yeah, she's been serving since way before you got here, and she's still slaying 🧚✨