[petsc-users] Unable to create >4GB sized HDF5 files on Cray XC30

Juha Jäykkä juhaj at iki.fi
Sat Oct 5 15:07:38 CDT 2013

> Yes, there will be some extra space, but HDF5 will deal with it.


> > I'll try to get something useful in. What's the timetable?
> Thanks.  You're the one that asked to use chunking so it's on your time.

Actually, I didn't ask for it. I only asked for a bug to be fixed. A bug which 
means > 4 GB Vec cannot be saved into a HDF5 file using PETSc VecView, because 
chunking *was* introduced, but with insane chunk sizes (i.e. the *global* 
instead of local Vec size for each chunk).

Anyway, that's just so the record gets set straight: this is NOT a feature 
request, this is a bug.

> If other people ask before you put something together, we'll check in
> with you and decide what to do.

Thanks, but no need to: if I'm too slow, I'm happy with someone else's fix. In 
fact, I do not have much time to use on this, so I really hope someone else 
beats me to it.

But what I really meant by timetable was that when is the next 3.4.x due and 
when do you need the fix if it is to go to the next release?


		| Juha Jäykkä, juhaj at iki.fi			|
		| http://koti.kapsi.fi/~juhaj/			|

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