[gmx-users] Error while re-compiling Gromacs 5.1.2 with GPU and gcc 5.3.1
pall.szilard at gmail.com
Tue May 31 22:27:53 CEST 2016
On Tue, May 31, 2016 at 10:09 PM, Diogo Martins de Sá <sadiogo at mol.bio.br>
> Hi Florent,
> you''ve read my mind! I've just tried that using gcc-4.8 and g++-4.8.
> the "cmake" step worked like before but "make" gave the exact same error.
That's because the issue is in a system header.
> Does anyone know what the "Building NVCC" does? NVCC is the nvidia cuda
> compiler, maybe it was not found? I found this:
"Building NVCC (Device) object ..." is the full message and it simply
reports that the CUDA compiler (nvcc) is building an object that contain
GPU device code.
> CUDA codes runs on both the CPU <https://en.wikipedia.org/wiki/CPU> and
> GPU <https://en.wikipedia.org/wiki/GPU>. NVCC separates these two parts
> and sends host code (the part of code which will be run on the CPU
> <https://en.wikipedia.org/wiki/CPU>) to a C
> <https://en.wikipedia.org/wiki/C_%28programming_language%29> compiler
> like GCC <https://en.wikipedia.org/wiki/GNU_Compiler_Collection> or Intel
> C++ Compiler <https://en.wikipedia.org/wiki/Intel_C%2B%2B_Compiler> (ICC)
> or Microsoft Visual C <https://en.wikipedia.org/wiki/Microsoft_Visual_C>
> Compiler, and sends the device code (the part which will run on the GPU) to
> the GPU. The device code is further compiled by NVCC.
> From: Florent Hédin <work at ...
> Subject: Re: [gmx-users] Error while re-compiling Gromacs 5.1.2 with GPU
> and gcc 5.3.1
> Newsgroups: gmane.science.biology.gromacs.user
> Date: 2016-05-31 19:09:01 GMT (44 minutes ago)
> As far as I know cuda 7.5 only supports branch 4.X of gcc, not 5.X ;
> what about forcing the use of gcc-4.9:
> CC=gcc-4.9 CXX=g++-4.9 cmake [OTHER FLAGS] ..
> Florent Hédin
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