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[bug #59136] Makeprofiles with --replace is not thread-safe (labels can


From: Mohammad Akhlaghi
Subject: [bug #59136] Makeprofiles with --replace is not thread-safe (labels can differ when they overlap)
Date: Fri, 18 Sep 2020 20:18:08 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:80.0) Gecko/20100101 Firefox/80.0

URL:
  <https://savannah.gnu.org/bugs/?59136>

                 Summary: Makeprofiles with --replace is not thread-safe
(labels can differ when they overlap)
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Sat 19 Sep 2020 01:18:06 AM BST
                Category: MakeProfiles
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: In Progress
                 Privacy: Public
             Assigned to: makhlaghi
             Open/Closed: Open
         Discussion Lock: Any

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Details:

The '--replace' option in MakeProfiles is mostly used in scenarios with a flat
profile, when you want to build labeled images for things like aperture
photometry. It is necessary to avoid adding object labels over the same pixel.
However, we would simply replace the values in the same order that they were
built.

By default MakeProfiles builds the profiles in parallel (unless the user gives
a '--numthreads=1' option). Hence the result was that the output would not be
thread-safe (every time MakeProfiles is run, the overlapping profiles have a
different value). 




    _______________________________________________________

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  <https://savannah.gnu.org/bugs/?59136>

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