Hi Mark, thank you for your answer.
I made a simple test and did not observe any problems so far. Until now I'm not dealing with large integers and doubles. Thx, Jan > > > > > Today's Topics: > > 1. Re: 64bit and 32bit interoperability (Mark Miller) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 23 May 2010 21:27:33 -0700 > From: Mark Miller <[email protected]> > To: HDF Users Discussion List <[email protected]> > Subject: Re: [Hdf-forum] 64bit and 32bit interoperability > Message-ID: <1274675252.18786.8.ca...@114 miller86-1.llnl.gov > miller86-1 > Content-Type: text/plain > > Hi Jan, > > In general, yes, I believe it should be. > > I can think of some special cases you might need to consider if they > apply to you... > > a) file size is on 64-bit system grows to be greater than 2^(32-1) (2 > Gigs) and you don't have large file support on your 32-bit system. You > won't be able to read your file on the 32 bit system. You can 'fix' this > by using the 'family' Virtual File Driver I think. > > b) you write 64-bit integer dataset AND the values stored in it are > indeed large enough to REQUIRE 64 bits and your 32 bit system does NOT > have an appropriate integer type (e.g. long int or long long or > something) to read it back into. Note, if you write 'int' on your 64 bit > system and the values are small enough to fit into 32 bit, I am not sure > if HDF5 will handle reading it into an 'int' on your 32 bit system or > not. I think it will but I am not sure. You could explicitly attempt to > read it into long int or long long or int64 if your system supports > those types AND they are indeed 64 bit. > > These situations are highly UNlikely. So, I'd expect you would have no > problems. But, I think its important to mention them for completeness. I > can't think if any other cases where there could be problems. > > Mark > > On Sun, 2010-05-23 at 08:50, Jan Linxweiler wrote: >> Hallo all, >> >> my hdf5 data is generated by a solver compiled in 64bit. My question is if >> it is possible/safe to read this data with a software using the 32bit >> libraries? >> >> Thx, >> >> Jan >> _______________________________________________ >> Hdf-forum is for HDF software users discussion. >> [email protected] >> http://*mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org > -- > Mark C. Miller, Lawrence Livermore National Laboratory > ================!!LLNL BUSINESS ONLY!!================ > [email protected] urgent: [email protected] > T:8-6 (925)-423-5901 M/W/Th:7-12,2-7 (530)-753-851 > > > > > ------------------------------ > > _______________________________________________ > Hdf-forum is for HDF software users discussion. > [email protected] > http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org > > > End of Hdf-forum Digest, Vol 11, Issue 24 > *****************************************
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