small changes ,mt

diff --git a/trb3/trb3qs_analysis.tex b/trb3/trb3qs_analysis.tex
index 725ba7d2f0e49a11343963550c8a921abd12c496..f7d1c6f91e7ba57d601ac33ee273feeb933793b2 100644 (file)
--- a/trb3/trb3qs_analysis.tex
+++ b/trb3/trb3qs_analysis.tex
@@ -81,9 +81,27 @@ Now you can enable the needed environment to run the tools:
 
 Now you can start the tools dabc and go4.
 
-\begin{warning} You will not see any event delivered by DABC, if your trigger
-  rate is set too low, e.g. 100~Hz. First set your trigger rate to a higher
-  value, ~1kHz, start the DABC and go to lower rates, if you still need to.
+
+You need to make regular updates of the software.
+\begin{lstlisting}
+  svn update
+  make -j16
+\end{lstlisting}
+
+\begin{warning} 
+  Sometimes, the software will not compile, as too many internal things have
+  changed.
+  Then a 
+  \begin{lstlisting}
+    make clean
+    make -j16
+  \end{lstlisting}
+  is needed. Unfortunately, the time to compile root is quite long, even on a
+  fast computer with many processes running in parallel.
+  So, first go only to the affected subsystem, like dabc and make a make clean
+  there and try to compile again.
+  If you want/need to start from scratch: Use a new shell (without the
+  previous ``. ~/trbsoft/trb3/trb3login'') to recompile everything.
 \end{warning}