---
name: "gotst"
section: "1"
platform: "linux"
package: "scotch"
version: "7.0.17-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gotst"
---

# gotst(1)

compute statistics on sparse matrix orderings

## NAME

**gomtst** - compute statistics on sparse matrix orderings

## SYNOPSIS

```
gotst [options] [gfile] [ofile] [lfile]
```

## DESCRIPTION

**The gotst program computes, in a sequential way, statistics on a** **sparse matrix ordering, such as fill-in, operation count, and** **separator tree parameters: minimum, maximum, average height and** **variance of its leaves.**

**Source graph file** *gfile* **can only be a centralized graph file. File** *ofile* **represents the ordering of the symmetric sparse matrix the** **pattern of which is represented by** *gfile***. The resulting statistics** **are stored in file** *lfile***. When file names are not specified, data is** **read from standard input and written to standard output. Standard** **streams can also be explicitly represented by a dash '-'.**

**When the proper libraries have been included at compile time, gtst** **can directly handle compressed graphs, both as input and output. A** **stream is treated as compressed whenever its name is postfixed with** **a compressed file extension, such as in 'brol.grf.bz2' or '-.gz'. The** **compression formats which can be supported are the bzip2 format** **('.bz2'), the gzip format ('.gz'), and the lzma format ('.lzma').**

**Since gotst performs sequentially the symbolic factorization of** **matrix** *gfile* **in order to compute fill-in and operation count** **numbers, this program can take a long time or even run out of memory,** **when applied to very large graphs.**

## OPTIONS

- **-h**

  **Display some help.**

- **-v**

  **Do not account for vertex weights when computing factorization costs.**

- **-V**

  **Display program version and copyright.**

## EXAMPLE

**Display statistics on ordering brol.ord of graph brol.grf:**

```
    $ gotst brol.grf brol.ord
```

## SEE ALSO

**[gord(1)](/gord/1.md), [gtst(1)](/gtst/1.md), [dgord(1)](/dgord/1.md).**

**Scotch user's manual.**

## AUTHOR

**Francois Pellegrini \<francois.pellegrini@labri.fr\>**