https://pfspipe.ipmu.jp/jira This file is an XML representation of an issue en-us 8.3.4 803005 13-09-2019 https://pfspipe.ipmu.jp/jira/browse/PIPE2D-929 DRP 2-D Pipeline <p>At the moment, the algorithm implemented in <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-615" title="Illumination estimate of the pupil should be constant across different spots for single fiber" class="issue-link" data-issue-key="PIPE2D-615"><del>PIPE2D-615</del></a> takes only two spots and analyzes them simultaneously. Expand this to take any number of spots to analyze at the same time. </p> PIPE2D-929

Psf modelling with fiber illumination constant across spots in the same fiber with 2+ spots

Task Normal Done Done ncaplar ncaplar Mon, 1 Nov 2021 19:06:41 +0000 Mon, 20 Dec 2021 17:13:12 +0000 Mon, 20 Dec 2021 17:13:12 +0000 0 1 <p>I have implemented the changes and sent a test run to the cluster before I went to Hawaii (started on Nov13). It seems that calculation is not finished by Nov17, indicating some sort of problem.</p> <p>The problem was that I have filled my user directory on tigress. I have cleaned my user directory (which had some old reduced data that should be in rerun directories, and many intermediate files from creation of poststamp images which could be deleted) and rerouted my outputs to </p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> scratch/gpfs</pre> </div></div> <p>which is a) actually proper way to do it and b) has more space.</p> <p>I have noticed that the code is slower than I expected, i.e., when I analyze 8 spots it is around 50% slower than analyzing 8 individual images. I am making a small profiling run to see what is happening. </p> <p>The slowdown on della was happening because I did not execute </p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> export OMP_NUM_THREADS=1</pre> </div></div> <p>before running my code (see <a href="https://jira.lsstcorp.org/browse/DM-4714" class="external-link" rel="nofollow">https://jira.lsstcorp.org/browse/DM-4714</a>)</p> <p>I implemented this code some time ago already. I will shortly describe the figures I attached here and which I described during one of the telecons. </p> <p>You can see <span class="image-wrap" style=""><a id="14523_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/14523/14523_improvment_defocus_focus.png" title="improvment_defocus_focus.png" file-preview-type="image" file-preview-id="14523" file-preview-title="improvment_defocus_focus.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/14524/_thumb_14524.png" style="border: 0px solid black" /></a></span> that the code has been correctly manipulated so that the parameters describing focal ratio degradation are same for all of the spots in the fiber. </p> <p> <span class="image-wrap" style=""><a id="14525_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/14525/14525_single_defocused_example.png" title="single_defocused_example.png" file-preview-type="image" file-preview-id="14525" file-preview-title="single_defocused_example.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/14523/_thumb_14523.png" style="border: 0px solid black" /></a></span> `Improvment` measure that I use to determine how well the algorithm is doing. In general, the `improvment` shows the same features as in previous versions of the fitting procedure when I was fitting individual spots. </p> <p> <span class="image-wrap" style=""><a id="14525_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/14525/14525_single_defocused_example.png" title="single_defocused_example.png" file-preview-type="image" file-preview-id="14525" file-preview-title="single_defocused_example.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/14525/_thumb_14525.png" style="border: 0px solid black" /></a></span> this figures shows an example of a single defocused spot. The quality is comparable to previous versions - but you can see some problems in modelling the illumination (e.g., struts). I will elaborate more on this in the follow-up tickets.</p> Relates PIPE2D-931 Development Rank 0|zzsh26:zyi Sprint 2DDRP-2021 A12 Story Points 5.0