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OS: Ubuntu 17.10
Gdb clinfo output:
...@...:~$ gdb clinfo
GNU gdb (Ubuntu 8.0.1-0ubuntu1) 8.0.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from clinfo...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/clinfo
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Number of platforms 2
Platform Name Experimental OpenCL 2.1 CPU Only Platform
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 2.1 LINUX
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
Platform Host timer resolution 1ns
Platform Extensions function suffix INTEL
Platform Name Intel(R) OpenCL HD Graphics
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 2.1
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_depth_images cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_image2d_from_buffer cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_media_block_io cl_intel_driver_diagnostics cl_intel_device_side_avc_motion_estimation cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_khr_subgroups cl_khr_il_program cl_khr_fp64 cl_intel_planar_yuv cl_intel_packed_yuv cl_intel_motion_estimation cl_intel_advanced_motion_estimation
Platform Host timer resolution 1ns
Platform Extensions function suffix INTEL
Platform Name Experimental OpenCL 2.1 CPU Only Platform
Number of devices 1
Device Name Intel(R) Core(TM) i3-6100 CPU @ 3.70GHz
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 2.1 (Build 10)
Driver Version 1.2.0.10
Device OpenCL C Version OpenCL C 2.0
Device Type CPU
Device Profile FULL_PROFILE
Max compute units 4
Max clock frequency 3700MHz
Device Partition (core)
Max number of sub-devices 4
Supported partition types by counts, equally, by names (Intel)
Max work item dimensions 3
Max work item sizes 8192x8192x8192
Max work group size 8192
[New Thread 0x7ffef2b3a700 (LWP 14210)]
[New Thread 0x7ffeebfff700 (LWP 14211)]
[New Thread 0x7ffef2739700 (LWP 14212)]
Preferred work group size multiple 128
Max sub-groups per work group 1
Preferred / native vector sizes
char 1 / 32
short 1 / 16
int 1 / 8
long 1 / 4
half 0 / 0 (n/a)
float 1 / 8
double 1 / 4 (cl_khr_fp64)
Half-precision Floating-point support (n/a)
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Address bits 64, Little-Endian
Global memory size 16704724992 (15.56GiB)
Error Correction support No
Max memory allocation 4176181248 (3.889GiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing Yes
Fine-grained system sharing Yes
Atomics Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 64 bytes
Global 64 bytes
Local 0 bytes
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 65536 (64KiB)
Global Memory cache type Read/Write
Global Memory cache size 262144
Global Memory cache line 64 bytes
Image support Yes
Max number of samplers per kernel 480
Max size for 1D images from buffer 261011328 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 64 bytes
Pitch alignment for 2D image buffers 64 bytes
Max 2D image size 16384x16384 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 480
Max number of write image args 480
Max number of read/write image args 480
Max number of pipe args 16
Max active pipe reservations 65535
Max pipe packet size 1024
Local memory type Global
Local memory size 32768 (32KiB)
Max constant buffer size 131072 (128KiB)
Max number of constant args 480
Max size of kernel argument 3840 (3.75KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Local thread execution (Intel) Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 4294967295 (4GiB)
Max size 4294967295 (4GiB)
Max queues on device 4294967295
Max events on device 4294967295
Prefer user sync for interop No
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
Sub-group independent forward progress No
IL version SPIR-V_1.0
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Available Yes
Compiler Available Yes
Linker Available Yes
Device Extensions cl_khr_icd cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
Platform Name Intel(R) OpenCL HD Graphics
Number of devices 1
Device Name Intel(R) Gen9 HD Graphics NEO
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 2.1 NEO
Driver Version 1.0
Device OpenCL C Version OpenCL C 2.0
Device Type GPU
Device Profile FULL_PROFILE
Max compute units 23
Max clock frequency 1050MHz
Device Partition (core)
Max number of sub-devices 0
Supported partition types None
Max work item dimensions 3
Max work item sizes 256x256x256
Max work group size 256
Thread 1 "clinfo" received signal SIGSEGV, Segmentation fault.
TC::Utils::FillOutputArgs (pFEBinaryResult=0x0, pOutputArgs=0x7fffffffd940, exceptString="") at /home/.../neo/igc/IGC/OCLFE/igd_fcl_mcl/source/clang_tb.cpp:139
139 pOutputArgs->ErrorStringSize = (uint32_t)strlen(pFEBinaryResult->GetErrorLog());
(gdb) bt
#0 TC::Utils::FillOutputArgs (pFEBinaryResult=0x0, pOutputArgs=0x7fffffffd940, exceptString="") at /home/.../neo/igc/IGC/OCLFE/igd_fcl_mcl/source/clang_tb.cpp:139
#1 0x00007ffef2c8dde6 in TC::CClangTranslationBlock::TranslateClang (this=this@entry=0x170ab00, pInputArgs=pInputArgs@entry=0x7fffffffd7c0,
pOutputArgs=pOutputArgs@entry=0x7fffffffd940, exceptString="",
pInternalOptions=0xbae6f0 "-ocl-version=210 -fpreserve-vec3-type -cl-ext=-all,+cl_khr_3d_image_writes,+cl_khr_byte_addressable_store,+cl_khr_fp16,+cl_khr_depth_images,+cl_khr_global_int32_base_atomics,+cl_khr_global_int32_exten"...) at /home/.../neo/igc/IGC/OCLFE/igd_fcl_mcl/source/clang_tb.cpp:824
#2 0x00007ffef2c8fe73 in TC::CClangTranslationBlock::Translate (this=0x170ab00, pInputArgs=0x7fffffffd970, pOutputArgs=0x7fffffffd940)
at /home/.../neo/igc/IGC/OCLFE/igd_fcl_mcl/source/clang_tb.cpp:1055
#3 0x00007ffef2c93a96 in IGC::FclOclTranslationCtx<0ul>::Impl::Translate (tracingOptionsCount=0, tracingOptions=0x0, internalOptions=0x637b50, options=0x16ebaa0,
src=<optimized out>, outVersion=1, this=0x17797a0) at /home/.../neo/igc/IGC/AdaptorOCL/ocl_igc_interface/impl/fcl_ocl_translation_ctx_impl.h:115
#4 IGC::FclOclTranslationCtx<1ul>::TranslateImpl (this=<optimized out>, outVersion=1, src=<optimized out>, options=0x16ebaa0, internalOptions=0x637b50,
tracingOptions=0x0, tracingOptionsCount=0) at /home/.../neo/igc/IGC/AdaptorOCL/ocl_igc_interface/impl/fcl_ocl_translation_ctx_impl.cpp:42
#5 0x00007ffff539eef4 in OCLRT::CompilerInterface::build(OCLRT::Program&, OCLRT::TranslationArgs const&, bool) () from /opt/intel/opencl/libigdrcl.so
#6 0x00007ffff53d24c3 in OCLRT::Program::build(unsigned int, _cl_device_id* const*, char const*, void (*)(_cl_program*, void*), void*, bool) ()
from /opt/intel/opencl/libigdrcl.so
#7 0x00007ffff5375156 in clBuildProgram () from /opt/intel/opencl/libigdrcl.so
#8 0x00000000004057f8 in ?? ()
#9 0x0000000000405d0c in ?? ()
#10 0x0000000000406a57 in ?? ()
#11 0x0000000000407642 in ?? ()
#12 0x00000000004014c4 in ?? ()
#13 0x00007ffff760a1c1 in __libc_start_main (main=0x401180, argc=1, argv=0x7fffffffdff8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7fffffffdfe8) at ../csu/libc-start.c:308
#14 0x00000000004015a9 in ?? ()
(gdb)
Ask your questions, please.
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2 Replies
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Hi Vladimir,
I think you have two conflicting OpenCL installations: experimental OpenCL CPU and NEO.
See this issue with NEO here: https://github.com/intel/compute-runtime/issues/21.
- Alexey
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VladimirV,
Thanks for the report of your issue and providing the clinfo output along with the stack trace. This kind of feedback can lead to very helpful discussion.
At the current time, if users observe issues with new neo deployments on systems with existing ocl implementations a few recommendations:
1) Consider if you really need to run an opencl build that comes from the SRB5.0 package at the same time you're running NEO. Consider removing older implementations that you don't plan to use.
2) Check for an update to the source tree located on github. The developers have been making a ton of updates since the github repo went live. The linked example is a good example of an issue where developers have checkins suggestive of mitigation. (https://github.com/intel/compute-runtime/issues/21).
For context, the NEO opencl driver development tree is divergent from previous SRB releases. As products move toward a NEO driver stack, we'll have more coverage for how they coexist. Reports like this will help. Going forward, closed source opencl cpu runtime and opencl sdk teams have committed to validating along side NEO builds as appropriate.
If you have any changes to your configuration... please share your experience with the thread. Thanks.
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