Hi all,
I am new to pocl. When using pocl as an opencl implementation, I find that
my program cannot detect GPU device.
The test program I use is "hotspot" from "rodinia_2.0.1". I am using pocl
0.7.
1. When using default opencl implementation, the program can correctly run
and output.
Platform: NVIDIA Corporation
Device: GeForce GTX 580
2. To use pocl (Linking your program with pocl through an icd loader), in
its makefile file I replace
"$(CC) $(CC_FLAGS) -o $(EXE) -I$(OPENCL_INC) OpenCL_helper_library.c
hotspot.c -L$(OPENCL_LIB) -lOpenCL" with
"$(CC) $(CC_FLAGS) -o $(EXE) -I$(OPENCL_INC) OpenCL_helper_library.c
hotspot.c `pkg-config --libs --cflags pocl`"
3. Then I compile and run the program, it outputs
Platform: The POCL project
Error at line 179: CL_DEVICE_NOT_FOUND
The error happens in the line listed below:
context = clCreateContextFromType(context_properties, CL_DEVICE_TYPE_GPU,
NULL, NULL, &error);
4. I guess it is because pocl cannot detect GPU device, then I replace
"CL_DEVICE_TYPE_GPU" with "CL_DEVICE_TYPE_CPU" or "CL_DEVICE_TYPE_ALL". The
program can correctly run and outputs:
Platform0: The POCL project
Device: pthread
Can anyone please comment on this?
Thanks.
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