Changeset 27428

Timestamp:

Mar 24, 2010, 8:47:32 AM (16 years ago)

Author:

eugene

Message:

update notes

File:

• branches/eam_branches/largefiles.20100314/Ohana/src/relastro/doc/notes.txt (modified) (1 diff)

branches/eam_branches/largefiles.20100314/Ohana/src/relastro/doc/notes.txt

@@ +1 @@
+
+2010.03.24
+
+  I have finished only part of the optimizations listed below: I have
+  made the detection->image and image->mosaic lookups use bracket
+  searches.  I have NOT converted the image->mosaic lookups to use the
+  parentID, so these matches are still based on time ranges.  I have
+  also added a bit of positional constraint to the image match
+  function in 'select_images' (comparing Rmax of the sky regions to
+  Rmin of the images).  These have had a huge improvement.  Here is
+  the execution time for the SAS data (~450 images) with the old vs
+  the new code on pikake:
+
+  old : 39min
+  new :  7min
+
+  The bulk of the time for the new code is now disk I/O.
 
 2010.03.23