 27 Feb 2007, Stefan Ritt, Forum, event builder scalability
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> Our bottle neck is (a) compactPCI backplane reading data from waveform digitizers
> to the frontend CPUs and (b) CPU power on the frontend CPUs to analyzer the waveforms.
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02 Mar 2007, Kevin Lynch, Forum, event builder scalability
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> Hi there:
> I have a question if there's anybody out there running MIDAS with event builder
> that assembles events from more that just a few front ends (say on the order of
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03 Mar 2007, Piotr Zolnierczuk, Forum, event builder scalability
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Hi all,
thank you for all responses.
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03 Mar 2007, Stefan Ritt, Forum, event builder scalability
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> It seems that there's no problem running MIDAS with event builder assembling
> data from ~10 front-ends. How about ~100? One possible solution is to have a
> multi-tiered architecture.
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 10 Apr 2007, Dan Gastler, Forum, Interrupt code for VME?
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Hello,
Is there any example code for using midas for interrupt driven data
collection over VME? I am using a Struck SIS3100 PCI/VME setup to connect to my
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09 May 2007, Carl Metelko, Forum, Splitting data transfer and control onto different networks
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Hi,
I'm setting up a system with two networks with the intension of having
control info (odb, alarm) on the 192.168.0.x
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09 May 2007, Stefan Ritt, Forum, Splitting data transfer and control onto different networks
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Hi Carl,
so far I did not experience any problems of running odb&alarm on the same link as
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09 May 2007, Konstantin Olchanski, Forum, Splitting data transfer and control onto different networks
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> I'm setting up a system with two networks with the intension of having
> control info (odb, alarm) on the 192.168.0.x
> and the frontend readout on 192.168.1.x
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14 May 2007, Carl Metelko, Forum, Splitting data transfer and control onto different networks
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Hi,
thanks for the advice. We do have dual core Xeons so we'll try running
most things on the server. Unless it proves to be a problem we'll run all
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07 Jun 2007, Randolf Pohl, Forum, crash when analyzing multiple runs offline 
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Hello,
I am having a problem with the root-based analyzer. It crashes when I try to
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08 Jun 2007, Stefan Ritt, Forum, crash when analyzing multiple runs offline
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Unfortunately I don't have time right now to debug the problem, but I could see
roughly what it could be. The analyzer crashes inside CloseRootOutputFile:
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09 Jun 2007, Randolf Pohl, Forum, crash when analyzing multiple runs offline
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Hello Stefan,
tree_struct.n_tree keeps counting up from run to run (in book_ttree). This should
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10 Jun 2007, Stefan Ritt, Forum, crash when analyzing multiple runs offline
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> tree_struct.n_tree keeps counting up from run to run (in book_ttree). This should
> presumably not be the case, since CloseRootOutputFile() frees the trees at eor().
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11 Jun 2007, Randolf Pohl, Forum, crash when analyzing multiple runs offline
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Hello again,
just for the record, in case somebody else runs into the same problem...
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11 Jun 2007, Stefan Ritt, Forum, crash when analyzing multiple runs offline
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> I have hunted down "my" segfault problem to the fact that I book histograms not
> in <module>_init, but in <module>_bor. I have to do so, because only in bor do I
> know which histograms to book, as this information comes from the ODB (booking
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12 Jun 2007, Randolf Pohl, Forum, crash when analyzing multiple runs offline
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Hi
> So I guess your solution is not a real solution.
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12 Jul 2007, Konstantin Olchanski, Forum, Midas on a x86_64 - incompatible with x86_32
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> We run 64-bit MIDAS on RHEL4 with 64-bit ROOT and everything generally works,
> except for compatibility problems with 32-bit MIDAS.
>
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13 Jul 2007, Stefan Ritt, Forum, Midas on a x86_64 - incompatible with x86_32
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> The biggest problem here is that making 32-bit ODB and 64-bit ODB compatible requires breaking one or
> the other (My proposed changes break the 64-bit version. Alternatively, one could add explicit padding
> to these data structures and break the 32-bit ODB).
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12 Aug 2007, Konstantin Olchanski, Forum, Midas on a x86_64 - incompatible with x86_32
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> I agree to make 32-bit and 64-bit compatible. In the long run, everything will be 64-bit, so I would suggest
> in breaking the 32-bit ODB, add some padding there where needed, probably with some conditional compiling.
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20 Aug 2007, Konstantin Olchanski, Forum, Midas on a x86_64 - incompatible with x86_32
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> > I agree to make 32-bit and 64-bit compatible. In the long run, everything will be 64-bit, so I would suggest
> > in breaking the 32-bit ODB, add some padding there where needed, probably with some conditional compiling.
>
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