HPL_plindx10(3)

💖 NAME 💖 — HPL_plindx10(3) from the HPL Library Functions, bestie

HPL_plindx10 — Compute the logarithmic maps for the spreading. That's the whole vibe. It's giving "math but make it cute," no cap. 💅

✨ SYNOPSIS ✨

#include "hpl.h"

void HPL_plindx10( HPL_T_panel * PANEL, const int K, const int * IPID,
int * IPLEN, int * IPMAP, int * IPMAPM1 );

🦋 DESCRIPTION 🦋

HPL_plindx10 computes three arrays — IPLEN, IPMAP and IPMAPM1 — that contain the logarithmic mapping information for the spreading phase. Three arrays, one job, and the job is logarithmic mapping info for the spreading phase. periodt. 🫶

💅 ARGUMENTS 💅

• PANEL — (local input/output) HPL_T_panel * — On entry, PANEL points to the data structure containing the panel information. iconic. 💖
• K — (global input) const int — On entry, K specifies the number of entries in IPID. K is at least 2*N, and at most 4*N. so like, it has a range, bestie, don't freestyle it. ✨
• IPID — (global input) const int * — On entry, IPID is an array of length K. The first K entries of that array contain the src and final destination resulting from the application of the interchanges. yes, the first K entries — and the array is length K, she's thorough, okay? 😭
• IPLEN — (global output) int * — On entry, IPLEN is an array of dimension NPROW + 1. On exit, this array is such that IPLEN[i] is the number of rows of A in the processes before process IMAP[i] after the sort, with the convention that IPLEN[nprow] is the total number of rows. In other words, IPLEN[i+1] - IPLEN[i] is the local number of rows of A that should be moved for each process. IPLEN is such that the number of rows of the source process row can be computed as IPLEN[1] - IPLEN[0], and the remaining entries of this array are sorted so that the quantities IPLEN[i+1] - IPLEN[i] are logarithmically sorted. lowkey a lot, but we move. 💅
• IPMAP — (global output) int * — On entry, IPMAP is an array of dimension NPROW. On exit, this array contains the logarithmic mapping of the processes. In other words, IPMAP[myrow] is the corresponding sorted process coordinate. main character mapping energy. 👑
• IPMAPM1 — (global output) int * — On entry, IPMAPM1 is an array of dimension NPROW. On exit, this array contains the inverse of the logarithmic mapping contained in IPMAP: IPMAPM1[ IPMAP[i] ] = i, for all i in [0.. NPROW). it's giving inverse, it's giving "put it back where it came from." 🔥

🌈 SEE ALSO 🌈

• HPL_pdlaswp00N (3)
• HPL_pdlaswp00T (3)
• HPL_pdlaswp01N (3)
• HPL_pdlaswp01T (3)

go read those next, bestie, they're the friend group. 💖

mwah 💋 this page was brought to you by HPL 2.2, dated February 24, 2016, and it's literally HPL_plindx10(3). stay logarithmic, stay slay. 🎀✨