| Commit message (Collapse) | Author | Age |
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Add #pragma omp statements for loops in reduction and prolongation
operators. Change loop control variables to signed types.
Add functions to determine the number of active threads.
Add a parameter to set the number of threads if desired.
darcs-hash:20070821185237-dae7b-56827b72a69b5fa1b3d1316379a0f155696b4cb2.gz
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Reorganise prolongation and restriction operators. This is a major
implementation change.
Most operators are now written as C++ templates instead of as Fortran
77 code. This simplifies the code, since C++ routines can be called
more easily, and they also have access to CarpetLib's high-level data
structures.
Previously, the operators combined temporal and spatial interpolation.
Now, time interpolation and space interpolation are handled
separately. This may be less efficient, but simplifies the code
significantly, since there are now N+M instead of N*M routines, for N
time interpolation and M space interpolation methods.
Remove the minmod prolongation operator, which was previously
disabled.
Add support for cell centering, using a method described by Simon
Hern, and suggested for Carpet by Ian Hawke.
darcs-hash:20070112205812-dae7b-5329795aa698e7bbc3671b1504134885dd830238.gz
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compiler flags
Carpet is _almost_ entirely written in C, C++, and Fortran 77, but
there are a few Fortran 90 files in CarpetLib defining the ENO and
WENO prolongation operators. This patch allows Carpet to be compiled
without a Fortran 90 compiler if these (ENO/WENO) operators are not
needed, by defining the C preprocessor symbol OMIT_F90. For example,
you could do this by putting
CFLAGS=-DOMIT_F90
CXXFLAGS=-DOMIT_F90
F77FLAGS=-DOMIT_F90
F90FLAGS=-DOMIT_F90
in a ~/.cactus/config file.
I emphasize that in the default case, where OMIT_F90 is not defined,
this patch is a no-op: the ENO and WENO prolongation operators are still
defined, a Fortran 90 compiler is still needed to compile CarpetLib, you
still pass go, you still collect $200. :) This patch only changes the
behavior of Carpet in the non-default case where OMIT_F90 is defined.
darcs-hash:20060829170502-b0a3f-0d423f190bd7388faa9e1a6e0a980694b044516b.gz
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WENO prolongation should be more accurate than ENO prolongation whilst
retaining the monotonicity properties of the ENO operators. The WENO
operators will only work with prolongation_order_space = 5 because of
the stencil width (requires 3 ghost zones).
darcs-hash:20060310132742-34bfa-32c65e7f67cb91ab36dd125a5327f2e16286e807.gz
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