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Entry  23 Oct 2015, Joe Grange, Forum, Running ROME in online mode Screen_Shot_2015-10-23_at_11.56.12_AM.png
    Reply  29 Oct 2015, Ryu Sawada, Forum, Running ROME in online mode 
       Reply  05 Nov 2015, Joe Grange, Forum, Running ROME in online mode 
          Reply  08 Nov 2015, Ryu Sawada, Forum, Running ROME in online mode 
             Reply  16 Nov 2015, Joe Grange, Forum, Running ROME in online mode 
Message ID: 173     Entry time: 16 Nov 2015     In reply to: 172
Author: Joe Grange 
Topic: Forum 
Subject: Running ROME in online mode 
Dear Ryu,

Thanks very much, indeed it was user error and I did not set -midas option at the compilation stage.


Ryu Sawada wrote:
Dear Joe,

Did you run ROMEBuilder for your application with -midas option ?
With this option, MIDAS library is linked to the application for communicating with MIDAS experiments.

Actual connection is done with using a function implemented in the MIDAS library.
This is the code where a ROME application connects to MIDAS.
(You can see this in $ROMESYS/src/ROMEMidasDAQ.cpp)
cm_connect_experiment is implemented in $MIDASSYS/src/midas.c
Bool_t ROMEMidasDAQ::ConnectExperiment(ROMEMidasDAQ *localThis)
   // Connect to the experiment
#if defined( HAVE_MIDAS )
   if (cm_connect_experiment(const_cast<char*>(gROME->GetOnlineHost()),
                             const_cast<char*>(gROME->GetOnlineAnalyzerName()), 0) != SUCCESS) {
      ROMEPrint::Error("\nCan not connect to experiment\n");
      return kFALSE;

Can you check if this function is called by adding
before the 'if' line and compile your application ?
If you didn't use -midas option when you run ROMEBuilder, HAVE_MIDAS will not be defined and cm_connect_experiment will not be called.

When nothing is written in <online> section of XML, I think the application tries to connect to the localhost with the experiment name defined in /etc/exptab.

I didn't mean anything specific about odbedit.
I guess if you can connect the MIDAS system with odbedit, then the system is ready to accept analyzer too.
But you could ask also MIDAS experts about this issue.


> Dear Ryu,
> Thanks for your response. Unfortunately setting these parameters in the XML file does not change the apparent
> behavior and I still cannot connect to the experiment in online mode. I also notice that other colleagues
> working with independent experiments successfully run ROME in the online mode without setting the parameters
> in the <online> section of the XML file.
> Can you tell me how I can verify the system is ready to accept the connection with the odbedit command? I can
> verify all basic information such as experiment name, run number, are as expected but I wonder if you mean
> something more specific.
> Thank you,
> Joe
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