[Halld-offline] observations after updating to the latest trunk version and hangup problem

[Kei Moriya]

Dear all,

After three days of struggling, I have finally
been able to install the current trunk code and
run my analysis programs. Most of my trouble seems
to have stemmed from
1. an older jana version being used,
2. omitting the DISABLE_SIMD=1 flag for make
For 2., it seems setting this in my .tcshrc does
not have an effect, and I need to type
 > make DISABLE_SIMD=1
on the command line.

One more thing I noticed is that the "workaround"
for the hangup/infinite loop problem still needs to be
implemented. I tried running my analysis program
without the workaround, and it silently stopped
processing after ~2k events. After implementing
the workaround, the code successfully ran on 10k
events. Although I do not expect any, I will run
several million events on the clusters tonight to see
if there are further problems.

Just to be sure, the "workaround" is setting the
optimization flag to 0 in Makefile.common and then
compiling DTrackCandidate_factory_CDC.cc
After that, the flag is returned to 2 to compile
other programs.

	Kei