[gmx-users] [gmx-developers] GTX 680 non detected on OS X

[Mark Abraham]

OK, but if all you have is static libraries, then that is all that CMake
can do, which is why I asked whether you have shared libraries where CMake
can find them?

Mark

On Tue, May 31, 2016 at 2:39 PM Uliano Guerrini <uliano.guerrini at unimi.it>
wrote:

> Hi Mark,
>
> the patch was active, in the sense that I pasted the 3 lines if (APPLE)…
> in between of the corresponding location (not same lines) of the relevant
> file of gramacs 5.1.2.
>
> I recompiled now without any difference (libcudart always static).
>
> uliano
>
> > On 31 May 2016, at 11:31, Mark Abraham <mark.j.abraham at gmail.com> wrote:
> >
> > Hi,
> >
> > The point of the patch that I linked was to specifically disable static
> > linking in what sounds like your case. What linking resulted from it? Do
> > you even have shared libraries installed? What does NVIDIA do/recommend
> on
> > Mac?
> >
> > Mark
> >
> > On Tue, 31 May 2016 11:25 Uliano Guerrini <uliano.guerrini at unimi.it>
> wrote:
> >
> >>
> >>>
> >>> The output you pasted into that email clearly shows that libcudart is
> >>> *statically* linked, so it's normal that it does not show up in the
> otool
> >>> output (you can list the symbols in your binary with some OS X tool
> >> similar
> >>> to nm if you want to verify).
> >>>
> >>> I have *no Idea* of the mechanism that is able to load libcudart
> without
> >>>> having it listed by otool -L
> >>>>
> >>>
> >>> The mechanism is called binary loader (if you linked statically) ;)
> >>
> >> actually it seems that libcudart *is* statically linked to libgromacs
> >>
> >> configuring with:
> >>
> >> uliano at MacPro:~/local/src/gromacs_build$ cmake ../gromacs-5.1.2
> >> -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DGMX_GPU=on
> >> -DCMAKE_PREFIX_PATH="/opt/local;/Developer/NVIDIA/CUDA-7.5/lib"
> >> -DCUDA_TOOLKIT_ROOT_DIR=/Developer/NVIDIA/CUDA-7.5
> >> -DCMAKE_INSTALL_PREFIX=/opt/gromacs
> -DCUDA_HOST_COMPILER=/usr/bin/clang++
> >>
> >> I get:
> >>
> >> uliano at MacPro:~$ nm  /opt/gromacs/lib/libgromacs.1.dylib | grep cudart
> |
> >> head
> >> 000000000090cd70 t __ZN6cudart10configData11addArgumentEPKvmm
> >> 000000000090cd30 t __ZN6cudart10configData5resetE4dim3S1_mP11CUstream_st
> >> 000000000090cc90 t __ZN6cudart10configDataC1Ev
> >> 000000000090ccd0 t __ZN6cudart10configDataC2Ev
> >> 000000000090cd10 t __ZN6cudart10configDataD1Ev
> >> 000000000090cd20 t __ZN6cudart10configDataD2Ev
> >> 000000000092c160 t __ZN6cudart10cuosCallocEmm
> >> 000000000092a3e0 t __ZN6cudart10cuosGetEnvEPKcPcm
> >> 000000000092c140 t __ZN6cudart10cuosMallocEm
> >> 000000000092a3d0 t __ZN6cudart10cuosSetEnvEPKcS1_
> >>
> >> but still:
> >>
> >> NOTE: Error occurred during GPU detection:
> >>      CUDA driver version is insufficient for CUDA runtime version
> >>      Can not use GPU acceleration, will fall back to CPU kernels.
> >>
> >> so, maybe this is not a linking problem
> >>
> >> uliano
> >>
> >> --
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