Can one use OpenCL when running under VirtualGL?
I noticed that clinfo segfaults if I invoke it with:
"vglrun clinfo"
I'm using the latest VirtualGL 2.5, CentOS 6.7 64-bit, AMD FirePro W8000
graphics.
Core was generated by `clinfo'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f6e9fd77fcd in ?? () from
/opt/intel/opencl-1.2-4.4.0.117/lib64/libintelocl.so
Missing separate debuginfos, use: debuginfo-install
VirtualGL-2.5-20160215.x86_64 glibc-2.12-1.166.el6_7.7.x86_64
libX11-1.6.0-6.el6.x86_64 libXau-1.0.6-4.el6.x86_64
libXext-1.3.2-2.1.el6.x86_64 libXv-1.0.9-2.1.el6.x86_64
libgcc-4.4.7-16.el6.x86_64 libstdc++-4.4.7-16.el6.x86_64
libxcb-1.9.1-3.el6.x86_64 mesa-libGL-10.4.3-1.el6.x86_64
numactl-2.0.9-2.el6.x86_64 opencl-1.2-intel-cpu-4.4.0.117-1.x86_64
(gdb) bt
#0 0x00007f6e9fd77fcd in ?? () from
/opt/intel/opencl-1.2-4.4.0.117/lib64/libintelocl.so
#1 0x00007f6e9fcf1e81 in clGetPlatformInfo () from
/opt/intel/opencl-1.2-4.4.0.117/lib64/libintelocl.so
#2 0x000000000040e8be in int
cl::detail::getInfoHelper<cl::detail::GetInfoFunctor0<int (*)(_cl_platform_id*,
unsigned int, unsigned long, void*, unsigned long*), _cl_platform_id*>
>(cl::detail::GetInfoFunctor0<int (*)(_cl_platform_id*, unsigned int, unsigned
long, void*, unsigned long*), _cl_platform_id*>, unsigned int,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >*, long) [clone .isra.35] [clone .constprop.213] ()
#3 0x000000000040fd57 in
cl::detail::param_traits<cl::detail::cl_platform_info, 2308>::param_type
cl::Platform::getInfo<2308>(int*) const ()
#4 0x0000000000407fc3 in main ()
If I rename /etc/OpenCL/vendors/intel64.icd I can then run "vglrun clinfo", and
it does not crash. I get a list indicating AMD APP is the provider, with one
CPU device. The GPU device is not listed. If I run clinfo without using
vglrun, the AMD APP provider lists both a CPU device and a GPU device.
Thanks,
Jeff McWilliams
Software Development Manager - Altair HyperView
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