topic Which driver do you have in OpenCL* for CPU

GPU not found on a Joule module

Javier_C_1 — Tue, 15 Nov 2016 13:44:22 GMT

Hi,

I tried several sample OpenCL programs and none of them found the GPU on my Joule module. I am running an Ubuntu Linux distribution and I installed the Intel SDK which I use to compile those samples. They all find the CPU but not the GPU. This is just the result of one of them (I got it from a GitHub post about installing the OpenCL SDK for Linux: https://gist.github.com/rmcgibbo/6314452)

clDeviceQuery Starting...

1 OpenCL Platforms found

CL_PLATFORM_NAME: Experimental OpenCL 2.1 CPU Only Platform
CL_PLATFORM_VERSION: OpenCL 2.1 LINUX
OpenCL Device Info:

1 devices found supporting OpenCL on: Experimental OpenCL 2.1 CPU Only Platform

Device Intel(R) Atom(TM) Processor T5700 @ 1.70GHz

CL_DEVICE_NAME: Intel(R) Atom(TM) Processor T5700 @ 1.70GHz
CL_DEVICE_VENDOR: Intel(R) Corporation
CL_DRIVER_VERSION: 1.2.0.18
CL_DEVICE_TYPE: CL_DEVICE_TYPE_CPU
CL_DEVICE_MAX_COMPUTE_UNITS: 4
CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: 3
CL_DEVICE_MAX_WORK_ITEM_SIZES: 8192 / 8192 / 8192
CL_DEVICE_MAX_WORK_GROUP_SIZE: 8192
CL_DEVICE_MAX_CLOCK_FREQUENCY: 1700 MHz
CL_DEVICE_ADDRESS_BITS: 64
CL_DEVICE_MAX_MEM_ALLOC_SIZE: 958 MByte
CL_DEVICE_GLOBAL_MEM_SIZE: 3833 MByte
CL_DEVICE_ERROR_CORRECTION_SUPPORT: no
CL_DEVICE_LOCAL_MEM_TYPE: global
CL_DEVICE_LOCAL_MEM_SIZE: 32 KByte
CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: 128 KByte
CL_DEVICE_QUEUE_PROPERTIES: CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE
CL_DEVICE_QUEUE_PROPERTIES: CL_QUEUE_PROFILING_ENABLE
CL_DEVICE_IMAGE_SUPPORT: 1
CL_DEVICE_MAX_READ_IMAGE_ARGS: 480
CL_DEVICE_MAX_WRITE_IMAGE_ARGS: 480

CL_DEVICE_IMAGE 2D_MAX_WIDTH 16384
2D_MAX_HEIGHT 16384
3D_MAX_WIDTH 2048
3D_MAX_HEIGHT 2048
3D_MAX_DEPTH 2048
CL_DEVICE_PREFERRED_VECTOR_WIDTH_ CHAR 1, SHORT 1, INT 1, FLOAT 1, DOUBLE 1

clDeviceQuery, Platform Name = Experimental OpenCL 2.1 CPU Only Platform, Platform Version = OpenCL 2.1 LINUX, NumDevs = 1, Device = Intel(R) Atom(TM) Processor T5700 @ 1.70GHz

System Info:

Local Time/Date = 09:12:08, 11/15/2016
CPU Name: Intel(R) Atom(TM) Processor T5700 @ 1.70GHz

# of CPU processors: 4

Linux version 4.4.0-47-generic (buildd@lcy01-03) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2) ) #68-Ubuntu SMP Wed Oct 26 19:39:52 UTC 2016

TEST PASSED

Why did it not find the GPU? Thanks a lot!

Which driver do you have

Jeffrey_M_Intel1 — Wed, 16 Nov 2016 06:33:10 GMT

Which driver do you have installed? The latest version (Intel intel-opencl-r3.0 (SRB3) Linux driver package) has patches for the 4.7 kernel. This is probably your best place to start.

I just downloaded and

Javier_C_1 — Wed, 16 Nov 2016 08:04:56 GMT

I just downloaded and installed the latest Intel SDK for Ubuntu available on the Intel downloads centre (the file name is intel_sdk_for_opencl_2016_ubuntu_6.3.0.1904_x64.tgz). I have been reading the results I posted here and I wonder if that latest version supports GPUs. The first line seems to specify it does not: CL_PLATFORM_NAME: Experimental OpenCL 2.1 CPU Only PlatformCould that be the problem? How could I solve it?

I just downloaded the file you told me and I got the .tar files from the .xz files but I do not know what to do next... where should I extract them? Should I just extract them in "/"?

Thanks a lot for your help

There is more info on this

Jeffrey_M_Intel1 — Thu, 17 Nov 2016 08:37:41 GMT

There is more info on this page: https://software.intel.com/en-us/articles/opencl-drivers

Including Installation instructions, with a section on Ubuntu.