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Changes between Version 8 and Version 9 of IPP_Progress_Report_20120305


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Timestamp:
Mar 12, 2012, 9:34:16 AM (14 years ago)
Author:
bills
Comment:

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  • IPP_Progress_Report_20120305

    v8 v9  
    4141
    4242=== Bill Sweeney ===
     43 * Another week of psphotStack debugging. Updated my script that reads log files and categorizes the failures. Focused on debugging the problems that cause assertion failures or core dumps.
     44   * Found cause of assertion failure in pmModel_SERSIC (nan value in model)
     45   * Runs were often failing to find any stamps for psf model fitting. The problem turned out to be an obscure little off by one bug in a little used psModules function.
     46   * Followed a case where a souce unexpectedly had no pixels associated with it. Turned out it was a child of another source that failed model fit.
     47   * A number of segvs were occuring because input cmf files were corrupt. (ipp064)  Wrote a script to find obvious corruption and to replace the broken file with another instance which is good. The test was to look for a negative IPP_IDET. This seems to have worked for the 20 or so cases that we had
     48 * With the bug fixes above we are now able to run psphotStack on the new stacks with a failure rate of only .4% (Note that the area tested so far is near the southern galactic cap. With older stacks in the galactic plane we get many cases of memory use explosion (> 160GB per process). We still need to do some work there.
     49 * Researched changing the psphotStack output file names to include the stack_id and filter in the file name. It turned out that this is non trivial with the current file rule setup. It will be easy to add a new file rule type.
     50 * Some postage stamp requests got stuck. It turned out that bycoord requests found data from 2008 which cannot be updated correctly. Updated the parser to exclude data prior to 2009-04-01 unless the user explicitly asks for it.
    4351
    4452=== Chris Waters ===