aoc error for emulation

Hello Vinay,

Sorry for delay in answer.

In previous version of aoc you should use "-march=emulator and -fast-emulator".

In 19.2 version, please, use "-march=emulator -legacy-emulator".

I guess, documentation of aoc was not updated to 19.2.

Best regards,

Sergey

Hello Intel Folks,

May i request you to please suggest solution for me. I need emulator urgently for my development.

Thanks Sergey for your help.

Now i am able to compile, but running gives error as below:

ERROR: CL_DEVICE_NOT_FOUND
Location: ../common/src/AOCLUtils/opencl.cpp:356
Query for number of devices failed

Please let me know how i can get this working.

My Runs are as below :

(base) wc@ign:~/Documents/opencl_fpga/exm_opencl_hello_world_x64_linux/hello_world$ aoc -march=emulator -legacy-emulator -board=a10gx device/hello_world.cl -o bin/hello_world.aocx
aoc: Running OpenCL parser....
aoc: OpenCL parser completed successfully.
aoc: Linking Object files....
aoc: Compiling for Emulation ....

------------------------------Make of hello world --------------------------------------------------------------------------------------

(base) wc@ign:~/Documents/opencl_fpga/exm_opencl_hello_world_x64_linux/hello_world$ make
../common/src/AOCLUtils/opencl.cpp: In function ‘_cl_program* aocl_utils::createProgramFromBinary(cl_context, const char*, _cl_device_id* const*, unsigned int)’:
../common/src/AOCLUtils/opencl.cpp:388:22: warning: ignoring attributes on template argument ‘cl_int {aka int}’ [-Wignored-attributes]
scoped_array<cl_int> binary_status(num_devices);
^

------------------------------Running hello world ---------------------------------------------------------------------

(base) wc@ign:~/Documents/opencl_fpga/exm_opencl_hello_world_x64_linux/hello_world$ bin/host
Querying platform for info:
==========================
CL_PLATFORM_NAME = Intel(R) FPGA SDK for OpenCL(TM)
CL_PLATFORM_VENDOR = Intel(R) Corporation
CL_PLATFORM_VERSION = OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 19.2

ERROR: CL_DEVICE_NOT_FOUND
Location: ../common/src/AOCLUtils/opencl.cpp:356
Query for number of devices failed

Thanks Sergey, it really helped.

Hi Sergey,

I work in Vinay's team. I was trying out the Sobel Filter Design Example. While compiling the host code I got this error

host/src/display.cpp:23:10: fatal error: SDL2/SDL.h: No such file or directory
#include <SDL2/SDL.h>
^~~~~~~~~~~~
compilation terminated.
../common/src/AOCLUtils/opencl.cpp: In function ‘_cl_program* aocl_utils::createProgramFromBinary(cl_context, const char*, _cl_device_id* const*, unsigned int)’:
../common/src/AOCLUtils/opencl.cpp:388:22: warning: ignoring attributes on template argument ‘cl_int {aka int}’ [-Wignored-attributes]
scoped_array<cl_int> binary_status(num_devices);
^
Makefile:74: recipe for target 'bin/host' failed
make: *** [bin/host] Error 1

Please help me to solve this.

Thanks and regards,

Hamsika.

Hi Hamsika,

Sorry for delay.

Could you please check that you have libsdl2-dev on your machine?

If not, you can install it by executing this command:

sudo apt-get install libsdl2-dev