Thanks for the reply! ---------------------------------------- > Date: Wed, 11 Jun 2008 16:08:17 -0500 > From: balay at mcs.anl.gov > To: petsc-users at mcs.anl.gov > Subject: Re: question about Petsc_Real > > On Wed, 11 Jun 2008, tsjb00 wrote: > >> >> Have a stupid question about the precision of Petsc_Real (float, double, >> long double...) > > >> Is it defined when installing the PETSC package? How? > > yes with the configure option --with-precision=double. However - > precisions other than double are not well tested. > >> Once the PETSC is installed, can I still change the precision of >> Petsc_Real for different application code? How? > > nope. > >> Do I have to recompile the PETSC package? > > yes you have to recompile. However you can use a different PETSC_ARCH > for this build - so that both builds are useable. [you can switch > between them by using the correct PETSC_ARCH value with make - when > compiling your code] > > Satish >
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