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

# atst(1)

test the consistency of target architectures

## NAME

**atst** - test the consistency of target architectures

## SYNOPSIS

```
atst [options] [afile] [lfile]
```

## DESCRIPTION

**The atst program checks the consistency of a Scotch** **decomposition-defined target architecture and, in case of success,** **outputs some statistics regarding the number of target vertices and** **the length of paths linking them. Target architectures define the** **topology of the target graphs used by static mapping programs** **[gmap(1)](/gmap/1.md) and [dgmap(1)](/dgmap/1.md).**

**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, atst** **can directly handle compressed files, 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.tgt.bz2' or '-.gz'. The** **compression formats which can be supported are the bzip2 format** **('.bz2'), the gzip format ('.gz'), and the lzma format ('.lzma').**

## OPTIONS

- **-h**

  **Display some help.**

- **-V**

  **Display program version and copyright.**

## EXAMPLE

**Test the consistency of architecture arch.tgt:**

```
    $ atst arch.tgt
```

## SEE ALSO

**[acpl(1)](/acpl/1.md), [amk\_ccc(1)](/amk_ccc/1.md), [amk\_grf(1)](/amk_grf/1.md), [dgmap(1)](/dgmap/1.md), [gmap(1)](/gmap/1.md), [gmtst(1)](/gmtst/1.md).**

**Scotch user's manual.**

## AUTHOR

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