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Hi there,
it appears that some code in PyOpenCL's test suite (version from git) manages to crash the compiler (?) in the 2013 beta. Here's the (moderately unhelpful) backtrace:
#0 0x00007fffeebe5b87 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#1 0x00007fffeebe5f37 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#2 0x00007fffeebe94ea in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#3 0x00007fffeebe9915 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#4 0x00007fffee69cce8 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#5 0x00007fffee69dc80 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#6 0x00007fffee69de3b in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#7 0x00007fffeebc7cf8 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#8 0x00007fffee69c9f7 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#9 0x00007fffee69dbd1 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#10 0x00007fffee491386 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#11 0x00007fffee48e6a3 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#12 0x00007fffee48a14a in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
#13 0x00007ffff1bfb937 in Intel::OpenCL::CPUDevice::ProgramService::BuildProgram(void*, char const*, int*) ()
from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libcpu_device.so
#14 0x00007ffff296e895 in Intel::OpenCL::Framework::LinkTask::Execute() () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libintelocl.so
#15 0x00007ffff24cdb09 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtask_executor.so
#16 0x00007ffff24d2166 in Intel::OpenCL::TaskExecutor::in_order_executor_task::execute() () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtask_executor.so
#17 0x00007ffff218b3dc in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtbb.so.2
#18 0x00007ffff21887ec in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtbb.so.2
#19 0x00007ffff218688b in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtbb.so.2
#20 0x00007ffff2183ea7 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtbb.so.2
#21 0x00007ffff2183db6 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libtbb.so.2
#22 0x00007ffff7bc7b50 in start_thread (arg=) at pthread_create.c:304
#23 0x00007ffff6a3070d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#24 0x0000000000000000 in ?? ()
(gdb) infor threads
Undefined command: "infor". Try "help".
(gdb) info threads
Id Target Id Frame
4 Thread 0x7fffe7fff700 (LWP 15839) "python" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:39
3 Thread 0x7fffed3b5700 (LWP 15840) "python" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:39
* 2 Thread 0x7fffed7b6700 (LWP 15838) "python" 0x00007fffeebe5b87 in ?? () from /home/andreas/pack/intel-opencl-2013-beta/lib64/OpenCL/vendors/intel/libOclCpuBackEnd.so
1 Thread 0x7ffff7fbc700 (LWP 15834) "python" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
You can reproduce this by grabbing pyopencl from git:
$ git clone http://github.com/inducer/pyopencl
then building pyopencl as described here: http://wiki.tiker.net/PyOpenCL/Installation
and then running:
$ cd pyopencl/test
$ python test_array.py 'test_scan(cl.create_some_context)'
I'd much appreciate any help.
Andreas
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3 Replies
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Is there anyway you can isolate this and provide us a small reproducer?
Thanks,
Raghu
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Thanks. I am able to reproduce the crash on CPU. I'll debug and file a bug. I will keep you posted on any updates.
Raghu
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