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Re: [h5md-user] Strings again / parallel issue
From: |
Pierre de Buyl |
Subject: |
Re: [h5md-user] Strings again / parallel issue |
Date: |
Fri, 7 Feb 2014 10:22:06 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Feb 07, 2014 at 10:05:48AM +0100, Felix Höfling wrote:
> >Actually, I have the feeling that variable-length "whatever" in
> >HDF5 should be
> >used only when there is no choice (i.e. data for which you have
> >significant
> >variations in the size of each element).
> >
> >This comes from:
> >1. the fact that the vl-string attribute routine is missing in
> >Fortran 90.
> >2. h5py's documentation
> >http://docs.h5py.org/en/latest/strings.html#compatibility
> >3. VL is reported not to work in parallel settings in the HDF5 FAQ
> >
> >So making the choice may actually prevent us from shooting
> >ourselves in the foot
> >:-)
> >
>
> I agree with you. The parallel context is an important reality for H5MD
> applications. Not being able to read some data from the file in such a
> situation would be a no-go. I had assumed that any valid HDF5 file can
> always be read.
>
> So let's stick to truly Atomic types only, i.e. fixed-length strings
> everywhere. The HDF5 library is really confusing here by pretending that
> VL strings are atomic.
It is just annoying that I catched these parallel-related issues so late but
I think we have made the most compatible choice.
Anyway, I'm happy to have this string issue sorted!
P
- Re: [h5md-user] Strings again / parallel issue, (continued)
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/04
- Re: [h5md-user] Strings again / parallel issue, Pierre de Buyl, 2014/02/04
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/04
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/04
- Re: [h5md-user] Strings again / parallel issue, Pierre de Buyl, 2014/02/05
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/05
- Re: [h5md-user] Strings again / parallel issue, Felix Höfling, 2014/02/06
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/06
- Re: [h5md-user] Strings again / parallel issue, Pierre de Buyl, 2014/02/06
- Re: [h5md-user] Strings again / parallel issue, Felix Höfling, 2014/02/07
- Re: [h5md-user] Strings again / parallel issue,
Pierre de Buyl <=
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/07
- Re: [h5md-user] Strings again / parallel issue, Pierre de Buyl, 2014/02/06
- Re: [h5md-user] Strings again / parallel issue, Peter Colberg, 2014/02/06
Re: [h5md-user] Strings again / parallel issue, Felix Höfling, 2014/02/04
Re: [h5md-user] Strings again / parallel issue, Felix Höfling, 2014/02/04