Core Minutes 7 July 2015

Core Minutes 7/7/2015

Present: Joe Asercion, Joanne Bogart, Jim Chiang, Warren Focke, Heather Kelly, Leon Rochester

ScienceTools: (Jim) No development work to report. A collaborator discovered a problem building just skymaps and dependencies (as opposed to building all of ST), something which our use of SCons should handle properly but doesn't. It's under investigation. See STGEN-160 .
FSSC: (Joe) gtlike segfaults on Yosemite when compiled optimized (and, for any serious use, an unoptimized build is not adequate; it runs too slowly). Has that been seen at SLAC? (Joanne) We don't formally support anything beyond MountainLion. I can ask a nearby Mac user who is on at least Mavericks, perhaps Yosemite, whether he has seen any such symptoms.

(Joe) made changes to matplotlib to get it to run on Yosemite. (Jim) If it works on other platforms, you can probably just push the changes. (Joe) It just forces matplotlib to use the ScienceTools distributed Tcl/Tk libs instead of the Mac framework Tcl/tk.
Leap second adventure: (Warren, Joanne) Last Wednesday this unassuming message
```
Hi:

Why is the data processing page reporting missing datagrams for all runs since the leap second???

ejs
```
was the start of an impressive thread in to OPSPROBLIST as well as the spur to much frantic activity. Data processing was halted while people looked under various rocks. A couple days later, over the holiday weekend, the problem was traced to a missing newline at the end of an ascii file which lists leap seconds. The file is read by a python program, which didn't care about the missing newline, and a C++ program, which did. Once the file was fixed, new data were processed properly. Still more work was required to clean up runs which had been processed or partially processed with the bad file.
News from C&A: (Leon) See Jean Ballet's presentation Likelihood unweighting.
Core talk:
- Upgrading externals (Joe) is wondering what the status is of externals earmarked for upgrade some time ago: cfitsio, ROOT, python. (Heather) There was a question whether we should move to Anaconda packaging of python or continue to roll our own. Sentiment seems to be in favor of the latter. She needs to make a new python release in order add the Pmw package; see JIRA EXTLIB-17. [Post-meeting Heather discovered that the complete list is actually ape, cfitsio, ROOT and python. See EXTLIB-14 and GRINF-67.]

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