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Hello
I have build and installed opencl intercept layer in my linux platform with kernel version 4.13.0. However, I couldn’t get the intercept layer to work. I would mention the steps I have taken to make it work in detail hoping to get it work. I am trying to get some metrics out of my opencl application. First, I downloaded whole opencl intercept repo in a folder and followed the cmake instructions as provided in the release mode and I have enabled other flags like bled other flags like ENABLE_CLIPROFENABLE_CLIPROF, ENABLE_MDAPI, ENABLE_CLILOADER followed by make and make install.
The opencl library created successfully inside the folder where I downloaded the repo. After that I am trying to use it for a particular application rather than doing a global install. So I believed I set the environment properly.
Specifically, the environment setting steps are as follows:
export LD_LIBRARY_PATH=/home/user/Desktop/OpenclIntercept/:$LD_LIBRARY_PATH
export CLI_DLLName=/opt/intel/opencl/SDK/lib64/libOpenCL.so
Setting other environment variables like:
export CLI_CallLogging=1 CLI_DumpProgramSource=1 CLI_DevicePerfCounterCustom=ComputeBasic CLI_DevicePerfCounterTiming=1
After setting all this when I am trying to execute both the cliloader and cliprof on my application I am getting segmentation fault.
CliLoader details:
sudo ./cliloader --debug --call-logging --dump-source /path/to/application/Application_itself
Output:
[cliloader debug] full path to executable is: /home/User/Desktop/opencl-intercept-layer/cliloader/cliloader
[cliloader debug] pProcessName is non-NULL: /cliloader
[cliloader debug] process directory is /home/User/Desktop/opencl-intercept-layer/cliloader
[cliloader debug] New LD_PRELOAD is /home/User/Desktop/opencl-intercept-layer/cliloader/../libOpenCL.so
[cliloader debug] New LD_LIBRARY_PATH is /home/User/Desktop/opencl-intercept-layer/cliloader/..
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
CLIntercept (64-bit) is loading...
CLintercept file location: /home/User/Desktop/opencl-intercept-layer/cliloader/../libOpenCL.so
CLIntercept URL: https://github.com/intel/opencl-intercept-layer
CLIntercept git description: v2.2.1-111-g331ce28
CLIntercept git refspec: refs/heads/master
CLInterecpt git hash: 331ce28ff998ea83620317aa1dfc64b0c06f6587
CLIntercept optional features:
cliloader(supported)
cliprof(supported)
kernel overrides(NOT supported)
ITT tracing(NOT supported)
MDAPI(supported)
CLIntercept environment variable prefix: CLI_
CLIntercept config file: clintercept.conf
Trying to load dispatch from: ./real_libOpenCL.so
Couldn't load library from: ./real_libOpenCL.so
Trying to load dispatch from: /usr/lib/x86_64-linux-gnu/libOpenCL.so
Couldn't get exported function pointer to: clSetProgramReleaseCallback
Couldn't get exported function pointer to: clSetProgramSpecializationConstant
... success!
CallLogging is set to a non-default value!
ReportToStderr is set to a non-default value!
DumpProgramSource is set to a non-default value!
Timer Started!
... loading complete.
>>>> clGetPlatformIDs
<<<< clGetPlatformIDs -> CL_SUCCESS
Number of Platforms: 2
>>>> clGetPlatformIDs
<<<< clGetPlatformIDs -> CL_SUCCESS
>>>> clGetDeviceIDs: platform = [ Intel(R) OpenCL HD Graphics ], device_type = CL_DEVICE_TYPE_GPU (4)
<<<< clGetDeviceIDs -> CL_SUCCESS
>>>> clGetDeviceIDs: platform = [ Intel(R) OpenCL HD Graphics ], device_type = CL_DEVICE_TYPE_GPU (4)
<<<< clGetDeviceIDs -> CL_SUCCESS
>>>> clCreateContext: properties = [ NULL ], num_devices = 1, devices = [ Intel(R) Gen9 HD Graphics NEO (CL_DEVICE_TYPE_GPU) ]
<<<< clCreateContext: returned 0x1c7ee50 -> CL_SUCCESS
Context created successfully
Segmentation fault (core dumped)
CliProf details:
sudo ./cliprof --debug --verbose /path/to/application/Application_itself
Output:
[cliprof debug] full path to executable is: /home/user/Desktop/opencl-intercept-layer/cliprof/cliprof
[cliprof debug] pProcessName is non-NULL: /cliprof
[cliprof debug] process directory is /home/user/Desktop/opencl-intercept-layer/cliprof
[cliprof debug] New LD_PRELOAD is /home/user/Desktop/opencl-intercept-layer/cliprof/../libOpenCL.so
[cliprof debug] New LD_LIBRARY_PATH is /home/user/Desktop/opencl-intercept-layer/cliprof/..
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
CLIntercept (64-bit) is loading...
CLintercept file location: /home/user/Desktop/opencl-intercept-layer/cliprof/../libOpenCL.so
CLIntercept URL: https://github.com/intel/opencl-intercept-layer
CLIntercept git description: v2.2.1-111-g331ce28
CLIntercept git refspec: refs/heads/master
CLInterecpt git hash: 331ce28ff998ea83620317aa1dfc64b0c06f6587
CLIntercept optional features:
cliloader(supported)
cliprof(supported)
kernel overrides(NOT supported)
ITT tracing(NOT supported)
MDAPI(supported)
CLIntercept environment variable prefix: CLI_
CLIntercept config file: clintercept.conf
Trying to load dispatch from: ./real_libOpenCL.so
Couldn't load library from: ./real_libOpenCL.so
Trying to load dispatch from: /usr/lib/x86_64-linux-gnu/libOpenCL.so
Couldn't get exported function pointer to: clSetProgramReleaseCallback
Couldn't get exported function pointer to: clSetProgramSpecializationConstant
... success!
ReportToStderr is set to a non-default value!
DevicePerformanceTiming is set to a non-default value!
Timer Started!
... loading complete.
Number of Platforms: 2
Context created successfully
Segmentation fault (core dumped)
Also when I am trying to launch the application after setting up environment variables I am getting a segmentation fault. I don’t know if the directory CLIntercept_Dump would be created automatically, I created it manually and I didn’t see any dump inside it even after enabling logging and dump. So I am not sure how to make this thing work and what I should do. I have one more question as to how can I use the control apis as mentioned in here .
I would really appreciate if someone could help me out with the errors.
Thank you.
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Hi Sankha,
Let's continue discussion on the github issue:
https://github.com/intel/opencl-intercept-layer/issues/70
Thanks!
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