On 12.04.2013 20:20, Szilárd Páll wrote:
On Fri, Apr 12, 2013 at 3:45 PM, 라지브간디 <[email protected]> wrote:
Can cygwin recognize the CUDA installed in win 7? if so, how do i link them ?
Good question, I've no idea whether it can as I myself have never
built GROMACS with CUDA on cygwin neither have I heard of anyone else
do that. What I can safely state is that the native Win builds with
non-cygwin CMake and MSVC as a compiler do work with with a variety of
generators: nmake, ninja, and VS.
However, it would be very useful to know whether/how it is possible to
detect CUDA with CMake a build GROMACS with GPU acceleration on
cygwin. Perhaps someone else on the list with more cygwin experience
could help out with tips or even try to build with CUDA.
CUDA compilation cannot use cygwin's gcc afaik for now. It *might*
be possible to *link* somethin Win64-Cuda into Cygwin64, but to my
knowledge, nobody succeeded so far in this.
Resumé: No CUDA acceleration for Gromacs under Cywin32/Cygwin64
(which corresponds to -DGMX_GPU=OFF).
cmake .. -DGMX_GPU=ON -DCUDA_TOOLKIT_ROOT_DIR=C:\Program Files\NVIDIA GPU
Computing Toolkit\CUDA
The whitespaces will need special treatment, AFAIR putting quotes
around the path (or simply copying the directory to C:\CUDA) should
work. Alternatively, you could try to put nvcc in your path, than
CMake should be able to do the path handling magic.
gcc and spaces in paths is a show stopper. The toolchain doesn't usually
work well (if at all) if spaces in paths are present.
I checked today the new Cygwin64, the distribution which contains gcc
4.8.0 and fftw3f 3.3.3, with gromacs. *It builds fine* (aside from the
known warnings from gcc 4.8.0). The first time I saw a working 64 bit
gromacs under Cygwin. The provided fftw3f doesn't have a SIMD mode,
but hey ..
cmake -DCMAKE_INSTALL_PREFIX=/opt/gromacs461 -DGMX_PREFER_STATIC_LIBS=ON
-DGMX_GPU=OFF ../gromacs-4.6.1
Regards
M.
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