Hi Elisa,

On Sep 15, 2010, at 12:46 AM, elisa sibarani wrote:

> Hi Quincey,
> 
> Here I attached my code for the benchmark.

        Hmm, I think this is in C#, yes?  I don't have a good way to run this 
(on my Mac) unfortunately.  Also, it's fairly complex - can you boil it down to 
some simpler C routines that concisely show the cases where you are seeing the 
performance difference?

        Quincey

> Thank you
> 
> regards,
> Elisa
> 
> --- On Tue, 9/14/10, Quincey Koziol <[email protected]> wrote:
> 
> From: Quincey Koziol <[email protected]>
> Subject: Re: [Hdf-forum] Store data in hierarchy, does it impact the 
> performance?
> To: "HDF Users Discussion List" <[email protected]>
> Date: Tuesday, September 14, 2010, 6:23 PM
> 
> Hi Elisa,
> 
> On Sep 15, 2010, at 12:09 AM, elisa sibarani wrote:
> 
> > Hi Quincey,
> > 
> > Here I attached the example of HDF5 file with hierarchy, file with no 
> > hierarchy inside, and the benchmark result.
> 
>     Actually, I meant source code for the benchmark.  Can you send that?
> 
>     Quincey
> 
> > Thank you for the reply.
> > 
> > Regards,
> > Elisa MS
> > 
> > 
> > --- On Tue, 9/14/10, Quincey Koziol <[email protected]> wrote:
> > 
> > From: Quincey Koziol <[email protected]>
> > Subject: Re: [Hdf-forum] Store data in hierarchy, does it impact the 
> > performance?
> > To: "HDF Users Discussion List" <[email protected]>
> > Date: Tuesday, September 14, 2010, 5:47 PM
> > 
> > Hi Elisa,
> > 
> > On Sep 14, 2010, at 4:43 PM, elisa sibarani wrote:
> > 
> > > Hi All,
> > > 
> > > I really need your help or idea, do I need to store data in hierarchy if 
> > > I want to use HDF5? When I do a small benchmark, the performance of the 
> > > file decrease when the data store directly in a dataset (after a 'root' 
> > > group), rather than in a hierarchical way, Is there any reason behind 
> > > that result?
> > > 
> > > Please, really need the reason of this question.
> > 
> >     Hmm, I don't have any good reason why this should be so.  Do you have a 
> > small benchmark that demonstrates the issue?
> > 
> >     Quincey
> > 
> > 
> > _______________________________________________
> > Hdf-forum is for HDF software users discussion.
> > [email protected]
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> > 
> > 
> > <BenchmarkResult.jpg><HDF_NoHierarchy.jpg><HDF_WithHierarchy.jpg>_______________________________________________
> > Hdf-forum is for HDF software users discussion.
> > [email protected]
> > http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
> 
> 
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> [email protected]
> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
> 
> 
> <Code.txt>_______________________________________________
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