 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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29 Aug 2007, Konstantin Olchanski, Forum, ODBv3, second try - 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.
> > 1) midas.h: remove unused field "dispatch" from EVENT_REQUEST and bump DATABASE_VERSION from 2 to 3
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17 Oct 2007, Randolf Pohl, Forum, Adding MIDAS .root-files
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Dear MIDAS users,
I want to add several .root-files produced by the MIDAS analyzer, in a fast
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17 Oct 2007, Randolf Pohl, Forum, Multi-core CPUs
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Dear Forum,
I have this beautiful Intel Quadcore with fast disks, but MIDAS does obviously
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17 Oct 2007, Stefan Ritt, Forum, Multi-core CPUs
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> I have this beautiful Intel Quadcore with fast disks, but MIDAS does obviously
> only make use of one CPU at a time. Has anyboy of you already done some work
> on making MIDAS parallel? Event-based data analysis should be the best
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17 Oct 2007, John M O'Donnell, Forum, Adding MIDAS .root-files
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The following program handles regular directories in a file, or folders (ugh).
Most histograms are added bin by bin.
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21 Nov 2007, Konstantin Olchanski, Forum, ODBv3, second try - Midas on a x86_64 - incompatible with x86_32
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These changes to make 32-bit and 64-bit ODB binary compatible with each other are now commited to midas svn, revision 4080.
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04 Feb 2008, Robert Pattie, Forum, analyzer crashes at high rates
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I'm using midas to read data from a waveform digitizer at event rates of
10-30kHz. To accomplish this the digitizer is read via Block transfers and the
raw data put into a single MIDAS event. Thus a MIDAS event could contain upto
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05 Feb 2008, Stefan Ritt, Forum, analyzer crashes at high rates
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> I'm using midas to read data from a waveform digitizer at event rates of
> 10-30kHz. To accomplish this the digitizer is read via Block transfers and the
> raw data put into a single MIDAS event. Thus a MIDAS event could contain upto
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