I have a "Intel Core i7-5775C" CPU with an "Intel Iris Pro Graphics 6200" GPU. I use Ubuntu 16.04. My goal is to test the efficiency of Cilk Plus to offload calculation on my GPU. I don't have access to internet on the computer.
First, I installed Intel Parallel Studio 2017 Cluster Edition, and tried to launch the samples from this page (Intel® C++ Compiler - Samples and Tutorial for Intel® Graphics Technology). The result was pretty clear, and vtune confirmed it : the code wasn't offloaded at all.
I tried the command gfx_sys_check and found out Intel Graphics Driver was not (properly) installed.
As I don't have an internet connection, I couldn't use Intel Graphics Update Tool.
From a colleague's recommendation, I downloaded Intel Media Server Studio 2017 (which contains the graphics drivers), installed it following the instructions, and patched the kernel (4.7).
I now have a broken display (Built-in display, only resolution available is 1024 x 768, my second screen is not detected) and I don't understand how to fix it.
I'll work on this problem everyday so I'm ready to give any information needed, here's some to begin with :
$ uname -a Linux gpgpu-Broadwell-H 4.7.0 #1 SMP Wed Nov 9 10:42:13 CET 2016 x86_64 x86_64 x86_64 GNU/Linux $ lspci -v -s 00:02.0 00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 0a) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: ASUSTeK Computer Inc. Broadwell-U Integrated Graphics Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at f6000000 (64-bit, non-prefetchable) [size=16M] Memory at e0000000 (64-bit, non-prefetchable) [size=256M] I/O ports at f000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] Capabilities: <access denied> Kernel modules: i915 $ lsmod | grep i915 i915 1314816 0 i2c_algo_bit 16384 1 i915 dm_kms_helper 147456 1 i915 drm 364544 2 i915,drm_kms_helper video 40960 2 i915,asus_wmi $ ls /dev/dri ls: cannot access '/dev/dri': No such file or directory $ vainfo libva info: VA-API version 0.99.0 Xlib: extension "XFree86-DRI" missing on display ":0". libva info: va_getDriverName() returns -1 libva error: va_getDriverName() failed with unknown libva error, driver_name=(null) vaInitialize failed with error code -1 (unknown libva error),exit $ gfx_sys_check Checking CPU Cheking OS Linux | 4.7.0 | #1 SMP Mon Mar 6 15:39:52 CET 2017 | x86_64 Description: Ubuntu 16.04.2 LTS Checking display X11 mode libva info: VA-API version 0.99.0 Xlib: extension "XFree86-DRI" missing on display ":0". libva info: va_getDriverName() returns -1 libva error: va_getDriverName() failed with unknwon libva error, driver_name=(null) VA initialization error -1: unknown libva error Checking Intel HD Graphics Driver Cannot get function of m_fvaCmExtSendReqMsg! CmDevice creation failure -66 FAILED CM initialization: MDF not installed - is not (properly) installed Checking Open Source Offload Runtime - is not (properly) installed
EDIT : I reinstalled my ubuntu 16.04 and parallel studio, the samples still don't work. Do you have any clue from where should I begin ?
Thanks, and have a nice day !
You posted a question related to Intel Cilk Plus in the Mobile development forum.
The appropriate forum in which you can post this question is the following one: https://software.intel.com/en-us/forums/intel-cilk-plus