[llvm-dev] segmentation fault compiling program with OpenMP pragmas

Siegmar Gross via llvm-dev llvm-dev at lists.llvm.org
Wed Aug 2 03:18:21 PDT 2017


Hi,

I have installed llvm-trunk to use OpenMP target pragmas. Unfortunately, I get
a segmentation fault compiling a small program.


loki introduction 722 clang -v 
                    clang version 5.0.0 (trunk 308176) (llvm/trunk 308177)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/llvm-trunk/bin
Found candidate GCC installation: /usr/lib64/gcc/x86_64-suse-linux/4.8
Selected GCC installation: /usr/lib64/gcc/x86_64-suse-linux/4.8
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
Found CUDA installation: /usr/local/cuda, version 8.0


loki introduction 723 clang -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda 
dot_prod_accelerator_OpenMP.c -lomptarget
clang-5.0: error: cannot find libdevice for . Provide path to different CUDA 
installation via --cuda-path, or pass -nocudalib to build without linking with 
libdevice.
#0 0x00007f6e7b1a11ea llvm::sys::PrintStackTrace(llvm::raw_ostream&) 
(/usr/local/llvm-trunk/lib64/libLLVMSupport.so.5+0xfc1ea)
#1 0x00007f6e7b19f32e llvm::sys::RunSignalHandlers() 
(/usr/local/llvm-trunk/lib64/libLLVMSupport.so.5+0xfa32e)
#2 0x00007f6e7b19f468 SignalHandler(int) 
(/usr/local/llvm-trunk/lib64/libLLVMSupport.so.5+0xfa468)
#3 0x00007f6e7e2d1b10 __restore_rt (/lib64/libpthread.so.0+0x10b10)
#4 0x00007f6e7d5b8dd0 
clang::driver::tools::NVPTX::Linker::ConstructJob(clang::driver::Compilation&, 
clang::driver::JobAction const&, clang::driver::InputInfo const&, 
llvm::SmallVector<clang::driver::InputInfo, 4u> const&, llvm::opt::ArgList 
const&, char const*) const (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0xc5dd0)
#5 0x00007f6e7d5591ac 
clang::driver::Driver::BuildJobsForActionNoCache(clang::driver::Compilation&, 
clang::driver::Action const*, clang::driver::ToolChain const*, llvm::StringRef, 
bool, bool, char const*, std::map<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 >, clang::driver::InputInfo, std::less<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > >, std::allocator<std::pair<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > const, clang::driver::InputInfo> > >&, clang::driver::Action::OffloadKind) 
const (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x661ac)
#6 0x00007f6e7d55ab69 
clang::driver::Driver::BuildJobsForAction(clang::driver::Compilation&, 
clang::driver::Action const*, clang::driver::ToolChain const*, llvm::StringRef, 
bool, bool, char const*, std::map<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 >, clang::driver::InputInfo, std::less<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > >, std::allocator<std::pair<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > const, clang::driver::InputInfo> > >&, clang::driver::Action::OffloadKind) 
const (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x67b69)
#7 0x00007f6e7d55c9b2 void llvm::function_ref<void (clang::driver::Action*, 
clang::driver::ToolChain const*, char 
const*)>::callback_fn<clang::driver::Driver::BuildJobsForActionNoCache(clang::driver::Compilation&, 
clang::driver::Action const*, clang::driver::ToolChain const*, llvm::StringRef, 
bool, bool, char const*, std::map<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 >, clang::driver::InputInfo, std::less<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > >, std::allocator<std::pair<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > const, clang::driver::InputInfo> > >&, clang::driver::Action::OffloadKind) 
const::{lambda(clang::driver::Action*, clang::driver::ToolChain const*, char 
const*)#2}>(long, clang::driver::Action*, clang::driver::ToolChain const*, char 
const*) (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x699b2)
#8 0x00007f6e7d53e97c 
clang::driver::OffloadAction::doOnEachDeviceDependence(llvm::function_ref<void 
(clang::driver::Action*, clang::driver::ToolChain const*, char const*)> const&) 
const (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x4b97c)
#9 0x00007f6e7d5584e9 
clang::driver::Driver::BuildJobsForActionNoCache(clang::driver::Compilation&, 
clang::driver::Action const*, clang::driver::ToolChain const*, llvm::StringRef, 
bool, bool, char const*, std::map<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 >, clang::driver::InputInfo, std::less<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > >, std::allocator<std::pair<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > const, clang::driver::InputInfo> > >&, clang::driver::Action::OffloadKind) 
const (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x654e9)
#10 0x00007f6e7d55ab69 
clang::driver::Driver::BuildJobsForAction(clang::driver::Compilation&, 
clang::driver::Action const*, clang::driver::ToolChain const*, llvm::StringRef, 
bool, bool, char const*, std::map<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 >, clang::driver::InputInfo, std::less<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > >, std::allocator<std::pair<std::pair<clang::driver::Action const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
 > const, clang::driver::InputInfo> > >&, clang::driver::Action::OffloadKind) 
const (/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x67b69)
#11 0x00007f6e7d55b7fb 
clang::driver::Driver::BuildJobs(clang::driver::Compilation&) const 
(/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x687fb)
#12 0x00007f6e7d55c7a9 
clang::driver::Driver::BuildCompilation(llvm::ArrayRef<char const*>) 
(/usr/local/llvm-trunk/lib64/libclangDriver.so.5+0x697a9)
#13 0x000000000040e733 (clang+0x40e733)
#14 0x00007f6e78e456e5 __libc_start_main 
/usr/src/debug/glibc-2.22/csu/libc-start.c:323:0
#15 0x0000000000410759 (clang+0x410759)
Stack dump:
0.	Program arguments: clang -m64 -O2 -g -Weverything 
-Wno-unused-command-line-argument -DLinux -Dx86_64 
-I/usr/local/valgrind-3.12.0/include 
-I/usr/local/intel/opencl-1.2-sdk-6.3.0.1904/include -I/usr/local/include 
-I/usr/include -I/usr/local/cuda-8.0/include -I/usr/local/hwloc-1.11.5/include 
-I/home/fd1026/Linux/x86_64/include -L/home/fd1026/Linux/x86_64/lib64 
-L/usr/local/valgrind-3.12.0/lib -L/usr/local/jdk1.8.0_66/jre/lib/amd64 
-L/usr/local/intel/opencl-1.2-sdk-6.3.0.1904/lib64 -L/usr/local/llvm-trunk/lib64 
-L/usr/local/pgi/linux86-64/16.10/lib 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/compiler/lib/intel64 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/compiler/lib/intel64_lin 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/mpi/intel64/lib 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/mpi/mic/lib 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/ipp/lib/intel64 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/compiler/lib/intel64_lin 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/mkl/lib/intel64_lin 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/tbb/lib/intel64/gcc4.7 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/tbb/lib/intel64/gcc4.7 
-L/usr/local/intel_xe_2018_beta/debugger_2018//libipt/intel64/lib 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/daal/lib/intel64_lin 
-L/usr/local/intel_xe_2018_beta/compilers_and_libraries_2018.0.082/linux/daal/../tbb/lib/intel64_lin/gcc4.4 
-L/usr/local/gcc-7.1.0/lib64 
-L/usr/local/gcc-7.1.0/libexec/gcc/x86_64-pc-linux-gnu/7.1.0 
-L/usr/local/gcc-7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0 -L/usr/local/lib64 
-L/usr/X11R6/lib64 -L/lib64 -L/usr/lib64 -L/usr/lib64/tls -L/usr/local/lib 
-L/usr/X11R6/lib -L/lib -L/usr/lib -L/usr/lib/tls -L/usr/local/gcc-7.1.0/lib 
-L/usr/local/gcc-7.1.0/libexec/gcc/x86_64-pc-linux-gnu/7.1.0/32 
-L/usr/local/gcc-7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/32 
-L/usr/local/cuda-8.0/lib64 -L/usr/local/hwloc-1.11.5/lib 
-L/usr/local/swipl-7.2.3/lib/x86_64-linux -L/home/fd1026/Linux/x86_64/lib 
-fopenmp -fopenmp-targets=nvptx64-nvidia-cuda dot_prod_accelerator_OpenMP.c 
-lomptarget
1.	Compilation construction
2.	Building compilation jobs
3.	Building compilation jobs
4.	Building compilation jobs
Segmentation fault (core dumped)
loki introduction 724



My program works with gcc-7.1.0.

loki introduction 727 gcc -fopenmp dot_prod_accelerator_OpenMP.c
loki introduction 728 setenv OMP_DEFAULT_DEVICE 0
loki introduction 729 /usr/bin/time -p a.out
Number of processors:     24
Number of devices:        1
Default device:           0
sum = 6.000000e+08
real 4.80
user 0.00
sys 0.00
loki introduction 730 setenv OMP_DEFAULT_DEVICE 1
loki introduction 731 /usr/bin/time -p a.out
Number of processors:     24
Number of devices:        1
Default device:           1
sum = 6.000000e+08
real 0.43
user 0.00
sys 0.00
loki introduction 732


I would be grateful if somebody can fix the problem. Please let me know
if you need anything else. Thank you very much for any help in advance.


Kind regards

Siegmar

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