Dear Midas Experts
I am Wenliang Li, a graduate student from University of Regina. Our group have
encountered some difficulty on outputting ADC and TDC data into ROOT tree with
the MIDAS SVN Revision: 5347.
Our Linux Distribution: Scientific Linux release 6.0 (Carbon)
ROOT Version: ROOT 5.28
gcc version: g++ (GCC) 4.4.4 20100726 (Red Hat 4.4.4-13)
kernel version: 2.6.32-279.19.1.el6.i686
I am using the given example $MIDASSYS/examples/experiment to generate some
data, and the issue is that the analyzer refuses to turn on the ADC0 and TDC0
back switches.
If the ADC and TDC banks are switched off, the analyzer will successfully output
the histograms but not the ROOT tree, and the Trigger and Scaler root trees are
completely empty.
With the same example experiment: $MIDASSYS/examples/experiment, this issue does
not occur on MIDAS SVN Revision: 4309.
The output error messages in the analyzer window are shown if the ADC and TDC
banks are switched to 1:
*************************
Connect to experiment ...OK
Root server listening on port 9090...
Loading previous online histos from /home/billlee/experiment/test_exp/last.root
Running analyzer online. Stop with "!"
Error in <TTree::Branch>: The pointer specified for ADC0 is not of a class known
to ROOT and (null) is not a known class
ROOT TTree rebooked
Error in <TTree::Branch>: The pointer specified for ADC0 is not of a class known
to ROOT and (null) is not a known class
Error in <TTree::Branch>: The pointer specified for TDC0 is not of a class known
to ROOT and (null) is not a known class
ROOT TTree rebooked
***********************
***************************
If I analyze the data with TDC and ADC bank switched set to be 1 :
$ analyzer -i runXXXXX.mid -o runXXXXX.root
I get the following error messages:
************************************************************************
************************************************************************
Root server listening on port 9090...
Running analyzer offline. Stop with "!"
Error in <TTree::Branch>: The pointer specified for ADC0 is not of a class known
to ROOT and (null) is not a known class
Error in <TTree::Branch>: The pointer specified for TDC0 is not of a class known
to ROOT and (null) is not a known class
Set run number 1 in ODB
Load ODB from run 1...OK
*** Break *** segmentation violation
===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
Thread 2 (Thread 0x7f46c6853700 (LWP 10808)):
#0 0x0000003b63a0e84d in accept () from /lib64/libpthread.so.0
#1 0x0000003b64e370f4 in TUnixSystem::AcceptConnection(int) () from
/usr/lib64/root/libCore.so.5.28
#2 0x0000003b6647849c in TServerSocket::Accept(unsigned char) () from
/usr/lib64/root/libNet.so.5.28
#3 0x000000000040c50e in root_socket_server (arg=<value optimized out>) at
src/mana.c:5275
#4 0x00007f46c8dc513a in TThread::Function(void*) () from
/usr/lib64/root/libThread.so.5.28
#5 0x0000003b63a07851 in start_thread () from /lib64/libpthread.so.0
#6 0x0000003b62ee811d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f46c8b94720 (LWP 10800)):
#0 0x0000003b62eabfdd in waitpid () from /lib64/libc.so.6
#1 0x0000003b62e3e899 in do_system () from /lib64/libc.so.6
#2 0x0000003b62e3ebd0 in system () from /lib64/libc.so.6
#3 0x0000003b64e3da31 in TUnixSystem::StackTrace() () from
/usr/lib64/root/libCore.so.5.28
#4 0x0000003b64e3d3f3 in TUnixSystem::DispatchSignals(ESignals) () from
/usr/lib64/root/libCore.so.5.28
#5 <signal handler called>
#6 0x000000000041245f in TIter (file=<value optimized out>,
pevent=0x7f46c5281010, par=0x665180) at /usr/include/root/TCollection.h:148
#7 write_event_ttree (file=<value optimized out>, pevent=0x7f46c5281010,
par=0x665180) at src/mana.c:2872
#8 0x0000000000412a4c in process_event (par=0x665180, pevent=0x7f46c5281010) at
src/mana.c:3195
#9 0x0000000000412e42 in analyze_run (run_number=1,
input_file_name=0x7fff4d738340 "run00001.mid", output_file_name=<value optimized
out>) at src/mana.c:4178
#10 0x0000000000413372 in loop_runs_offline () at src/mana.c:4366
#11 0x0000000000413ba5 in main (argc=<value optimized out>, argv=<value
optimized out>) at src/mana.c:5579
===========================================================
The lines below might hint at the cause of the crash.
If they do not help you then please submit a bug report at
http://root.cern.ch/bugs. Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#6 0x000000000041245f in TIter (file=<value optimized out>,
pevent=0x7f46c5281010, par=0x665180) at /usr/include/root/TCollection.h:148
#7 write_event_ttree (file=<value optimized out>, pevent=0x7f46c5281010,
par=0x665180) at src/mana.c:2872
#8 0x0000000000412a4c in process_event (par=0x665180, pevent=0x7f46c5281010) at
src/mana.c:3195
#9 0x0000000000412e42 in analyze_run (run_number=1,
input_file_name=0x7fff4d738340 "run00001.mid", output_file_name=<value optimized
out>) at src/mana.c:4178
#10 0x0000000000413372 in loop_runs_offline () at src/mana.c:4366
#11 0x0000000000413ba5 in main (argc=<value optimized out>, argv=<value
optimized out>) at src/mana.c:5579
===========================================================
[midas.c:1973:,ERROR] cm_disconnect_experiment not called at end of program
**********************************************************************************************
**********************************************************************************************
I wonder if there is any program syntax change between MIDAS Version 4309 and
5347, and are there any simple working setup example which can output root tree
with the newest version of MIDAS?
In the end, I would like to thank the continuous effort from Triumf and PSI on
developing MIDAS, it is a pleasure to work with.
Many thanks
Bill |