HPL_sdrv(3)

✨ HPL_sdrv ✨

okay bestie, welcome to HPL_sdrv from the HPL Library Functions era — this is the glow-up guide to sending and receiving a message 💌

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💖 NAME 💖

HPL_sdrv — send and receive a message. that's it. that's the whole vibe. 🫶

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🌸 SYNOPSIS 🌸

#include "hpl.h"

int HPL_sdrv( double * SBUF, int SCOUNT, int STAG, double * RBUF, int
RCOUNT, int RTAG, int PARTNER, MPI_Comm COMM );

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🦋 DESCRIPTION 🦋

so HPL_sdrv is literally just a cute little wrapper around MPI_Sendrecv. its main purpose? to let you do some experimentation and tuning of this simple function. yes, it's giving test-kitchen energy, and we love that for it 🧪✨

okay important part, no cap: messages of length less than or equal to zero are not sent nor received. they simply do not exist. ghosted. 💀

and when everything works out? successful completion is indicated by the returned error code HPL_SUCCESS. slay. 👑

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💅 ARGUMENTS 💅

• SBUF — (local input) double * — on entry, SBUF specifies the starting address of the buffer to be sent. that's your outgoing mail, bestie 💌
• SCOUNT — (local input) int — on entry, SCOUNT specifies the number of double precision entries in SBUF. SCOUNT must be at least zero. no negatives, we don't do that here 🙈
• STAG — (local input) int — on entry, STAG specifies the message tag to be used for the sending communication operation. it's the lil name tag on your message 🎀
• RBUF — (local output) double * — on entry, RBUF specifies the starting address of the buffer to be received. your inbox, basically 📥
• RCOUNT — (local input) int — on entry, RCOUNT specifies the number of double precision entries in RBUF. RCOUNT must be at least zero. same rule, same energy ⭐
• RTAG — (local input) int — on entry, RTAG specifies the message tag to be used for the receiving communication operation. the name tag on the incoming one 🏷️
• PARTNER — (local input) int — on entry, PARTNER specifies the rank of the collaborative process in the communication space defined by COMM. your plus-one in the group chat 🫂
• COMM — (local input) MPI_Comm — the MPI communicator identifying the communication space. this is the group chat itself 💬

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🌈 SEE ALSO 🌈

• HPL_send (3)
• HPL_recv (3)

go read those too, iykyk 👑

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and that's the whole page, bestie!! this was HPL 2.2, dated February 24, 2016 — so yes she's an icon, she's a legend, and she is the moment 💖✨🎀🦋🌸💅