Apri Cl in Intel?

Come compilare ed eseguire codici open cl su processori Intel i5 con unità Intel HD 4000 gpu???
Open cl è stato installato in /opt/intel/opencl e versioni ubuntu 12.04.
Qualsiasi aiuto sarebbe di grande aiuto...
Grazie

Risposta accettata:

Primo:
sudo apt-get install beignet opencl-headers

Aggiungi la cartella beignet al percorso di ricerca della tua libreria:

sudo su
echo "/usr/lib/beignet/" > /etc/ld.so.conf.d/beignet.conf
ldconfig
exit

Ottieni un semplice test binario:

git clone https://github.com/vpereira/CapsBasic-beignet

Modifica il makefile in modo che assomigli di più a questo:

all: capsbasic

capsbasic: capsbasic.cpp Makefile
    g++ capsbasic.cpp -lcl -ocapsbasic -I/usr/include -L/usr/lib/beignet

clean:
    rm -f capsbasic

Ecco qua. OpenCL funzionante per la famiglia di schede video Intel HD...

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)

./capsbasic

Number of available platforms: 1
Platform names:
    [0] Experiment Intel Gen OCL Driver [Selected]
Number of devices available for each type:
    CL_DEVICE_TYPE_CPU: 0
    CL_DEVICE_TYPE_GPU: 1
    CL_DEVICE_TYPE_ACCELERATOR: 0

*** Detailed information for each device ***

CL_DEVICE_TYPE_GPU[0]
    CL_DEVICE_NAME: Intel HD Graphics Family
    CL_DEVICE_AVAILABLE: 1
    CL_DEVICE_VENDOR: Intel
    CL_DEVICE_PROFILE: FULL_PROFILE
    CL_DEVICE_VERSION: OpenCL 1.1
    CL_DRIVER_VERSION: 0.2
    CL_DEVICE_OPENCL_C_VERSION: OpenCL C 1.1
    CL_DEVICE_MAX_COMPUTE_UNITS: 128
    CL_DEVICE_MAX_CLOCK_FREQUENCY: 1000
    CL_DEVICE_MAX_WORK_GROUP_SIZE: 512
    CL_DEVICE_ADDRESS_BITS: 32
    CL_DEVICE_MEM_BASE_ADDR_ALIGN: 32
    CL_DEVICE_MAX_MEM_ALLOC_SIZE: 134217728
    CL_DEVICE_GLOBAL_MEM_SIZE: 4
    CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: 65536
    CL_DEVICE_GLOBAL_MEM_CACHE_SIZE: 8192
    CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE: 128
    CL_DEVICE_LOCAL_MEM_SIZE: 65536
    CL_DEVICE_PROFILING_TIMER_RESOLUTION: 80
    CL_DEVICE_IMAGE_SUPPORT: 1
    CL_DEVICE_ERROR_CORRECTION_SUPPORT: 0
    CL_DEVICE_HOST_UNIFIED_MEMORY: 0
    CL_DEVICE_EXTENSIONS: 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_fp64 cl_khr_icd cl_khr_gl_sharing
    CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT: 16
    CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG: 16
    CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT: 16
    CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE: 0
    CL_DEVICE_NATIVE_VECTOR_WIDTH_INT: 16
    CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG: 16
    CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT: 16
    CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE: 16