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hwloc-diff(1)                        hwloc                       hwloc-diff(1)


       hwloc-diff - Compute differences between two XML topologies


       hwloc-diff [options] <input1.xml> <input2.xml>

       hwloc-diff [options] <input1.xml> <input2.xml> <output.xml>


       --refname <name>
                 Use  <name>  as  the identifier for the reference topology in
                 the output XML difference.  It is meant to tell which  topol-
                 ogy  should  be  used when applying the resulting difference.
                 hwloc-patch may use that name to automatically load the rele-
                 vant  reference  topology  XML.   By default, <input1.xml> is
                 used without its full path.

       --version Report version and exit.


       hwloc-diff computes the  difference  between  two  XML  topologies  and
       stores  the result into <output.xml> if any, or dumps it to stdout oth-

       The output difference may later be applied  to  another  topology  with

       hwloc-compress-dir  may be used for computing the diffs between all XML
       files in a directory.

       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-diff utility.


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

       Compute the difference between two XML topologies and output it to std-

           $ hwloc-diff fourmi023.xml fourmi024.xml
           Found 11 differences, exporting to stdout
           <?xml version="1.0" encoding="UTF-8"?>

       Output the difference to file diff.xml instead:

           $ hwloc-diff fourmi023.xml fourmi024.xml diff.xml
           Found 11 differences, exporting to diff.xml

       When the difference is too complex to be represented:

           $ hwloc-diff fourmi023.xml avakas-frontend1.xml
           Found 1 differences, including 1 too complex ones.
           Cannot export differences to stdout

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

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


       Upon  successful  execution,  hwloc-diff  outputs  the difference.  The
       return value is 0.

       If the difference is  too  complex  to  be  represented,  an  error  is
       returned and the output is not generated.

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


       hwloc(7), lstopo(1), hwloc-patch(1), hwloc-compress-dir(1)

1.8.1                            Feb 04, 2014                    hwloc-diff(1)

hwloc 1.8.1 - Generated Sun Jan 18 10:29:17 CST 2015
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