spmvtest2b(1)

💖 spmvtest2b 💖

okay so bestie, welcome to the glow-up of spmvtest2b from the Utility Commands chapter — it's a SpMV kernel benchmark of two dimensional Laplacian, and yes she is that girl. ✨

---

✨ NAME ✨

spmvtest2b — SpMV kernel benchmark of two dimensional Laplacian 🦋

---

🌸 SYNOPSIS 🌸

spmvtest1 m n iter [matrix_type]

ngl the synopsis literally says spmvtest1 and not spmvtest2b, and that's just how it is, we don't fix it, we don't question it, we copy it character for character. 💅

---

👑 DESCRIPTION 👑

so what does this icon actually do? she computes the matrix-vector multiply of a discretized two dimensional Laplacian of size mn, using the nine point central difference scheme, and a vector (1, ..., 1)^T. like, the whole vector is ones, she's not being subtle about it. 🫶

the FLOPS performance gets measured as the <b>average</b> of iter iterations. so iter is how many times she runs it before she reports the number, got it? ⭐

and if you need it, one of these values can be specified by matrix_type:

• 0 — measure the performance for the available matrix storage formats 🌈
• 1-11 — the number of the matrix storage format 🔥

the values m and n represent the numbers of the grid points in each dimension. 🎀

see the Lis User Guide for more information, bestie — she's the main character of the documentation, iykyk 📖

---

💀 EXIT STATUS 💀

the following exit values are returned:

• 0 — the process is normally terminated, slay, we love a clean exit 💖
• unspecified — an error occurred 😭 (unspecified is giving "we're not telling you which one", and that's on purpose)

---

🦋 SEE ALSO 🦋

the whole friend group, fr fr:

• lis(3)
• lsolve(1)
• esolve(1)
• hpcg_kernel(1)
• hpcg_spmvtest(1)
• spmvtest1(1)
• spmvtest2(1)
• spmvtest3(1)
• spmvtest3b(1)
• spmvtest4(1)
• spmvtest5(1)

and the link, no cap: http://www.ssisc.org/lis/ 🌐

---

and that's the whole page, bestie — this beauty dropped on <b>26 Mar 2014</b>, lives under <b>Man Page</b> for <b>spmvtest2b(1)</b>, and she ate. periodt. 💅✨💜