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hwloc-patch - Online in the Cloud

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This is the command hwloc-patch that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



hwloc-patch - Apply a topology difference to an existing XML topology


hwloc-patch [options] [<topology.xml> | refname] [<diff.xml> | -] <output.xml>

hwloc-patch [options] [<topology.xml> | refname] [<diff.xml> | -]


-R --reverse
Reverse the sense the difference file.

--version Report version and exit.


hwloc-patch loads the difference between two topologies from a XML file (or from the
standard input) and applies it to an existing topology, generating a new, modified one.

The XML difference may have been computed earlier with hwloc-diff or hwloc-compress-dir.

If <output.xml> is given, the new, modified topology is stored in that new file.
Otherwise, <topology.xml> is modified in place.

If refname is given instead of <topology.xml>, the input topology filename is
automatically guessed by reading the refname field of the XML diff file. By default
hwloc-diff generates XML diffs with the right reference topology filename (without any
path prefix).

If - is given instead of <diff.xml>, the topology difference is read from the standard

NOTE: It is highly recommended that you read the hwloc(7) overview page before reading
this man page. Most of the concepts described in hwloc(7) directly apply to the hwloc-
patch utility.


hwloc-patch's operation is best described through several examples.

Apply a XML topology difference file to an existing topology:

$ hwloc-patch fourmi023.xml diff.xml fourmi023-new.xml

Apply a XML topology difference file whole refname field contains the right input

$ hwloc-patch refname diff.xml fourmi023-new.xml

Apply a XML topology from the standard intput:

$ cat diff.xml | hwloc-patch fourmi023.xml - fourmi023-new.xml

Directly compute the difference between two topologies and apply it to another one, in

$ hwloc-diff fourmi023.xml fourmi024.xml | hwloc-patch fourmi025.xml -


Upon successful execution, hwloc-patch outputs the modified topology. The return value is

hwloc-patch also returns nonzero if any kind of error occurs, such as (but not limited to)
failure to parse the command line.

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