On 7/11/06, Paolo Giannozzi <giannozz at nest.sns.it> wrote: > > i know it sounds a little bit dense but is this an option switched > > on by default that i have to switch off or something that i simply > > have to avoid?
there should be a flag '-i4', but i'd generally recommend not to use the 64-bit integer binary at all. many legacy fortran codes _assume_ integer to be integer*4! but the major issue is, that for the time being, there seems little performance reason to use 64-bit integers in numerically intensive codes, _especially_ on x86_64 where 32-bit integers are as efficient and don't waste as much memory. 64-bit integers mostly matter for encryption/decryption and systems with insanely large numbers of items... ciao, axel. > > I guess the latter, but I don't really know. The anser > shoud be in the g95 manual > > Paolo > -- > Paolo Giannozzi Phone: +39/050-509876 > DEMOCRITOS and SNS Fax: +39/050-563513 > Piazza dei Cavalieri 7 I-56126 Pisa, Italy > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum > > -- ======================================================================= Axel Kohlmeyer akohlmey at cmm.chem.upenn.edu http://www.cmm.upenn.edu Center for Molecular Modeling -- University of Pennsylvania Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323 tel: 1-215-898-1582, fax: 1-215-573-6233, office-tel: 1-215-898-5425 ======================================================================= If you make something idiot-proof, the universe creates a better idiot.
