Intel integrated GPU

[Prime95]

Originally Posted by kracker

I believe it relies on clinfo for device info, which probably is not there.

You could, I guess install the AMD APP SDK and see what it does.

I installed the AMD APP SDK. Clinfo finds both the Intel and Nvidia GPUs. mfakto fails with the same message.

[Prime95]

Tried mfakto on my Haswell without a NVidia card:

Select device - Error -1001 (Unkown errorcode): clGetPlatformsIDs(num)
init_CL(1, 0) failed

[Jayder]

Is that with the special binary I mentioned or 0.13?

[TheMawn]

Ooooh unknown errors are the best.

Tell me how an error gets a code without a known cause. Lol.

[Bdot]

Originally Posted by Prime95

Tried mfakto on my Haswell without a NVidia card:

Select device - Error -1001 (Unkown errorcode): clGetPlatformsIDs(num)
init_CL(1, 0) failed

OK, let's try again, after we could not make it work on HD4000. Maybe Haswell changed the picture ... Please stick to version 0.13, I will provide special Intel-versions of 0.13 once I see what needs to be adapted.

Could you please post the complete clinfo output?

To make mfakto use a specific device, use the -d<x><y> switch. x is the platform number, y the device number. For a test, -d11, -d21, -d12 and -d22 should cover the usual configurations. By default, mfakto searches only for AMD devices ... so for Intel you definitely need -d.

Which version of Catalyst did you install?

@theMawn: -1001 is unknown to me and OpenCL. Probably some Intel-specific code and someone at Intel will know (lets hope for that).

Edit: clGetPlatformIDs is the very first OpenCL library call mfakto is doing. Most likely no OpenCL library could be located, i.e. no OpenCL runtime is available. It should be installed along with the vendor's driver - Intels GPU driver (or SDK) in this case. I think AMD Catalyst no longer installs its OCL libs if no AMD device is found.

[kracker]

I have 3 HD 2500's which supposedly have OpenCL 1.2. Count me in

[Prime95]

Originally Posted by Bdot

OK, let's try again.

Apparently, I screwed up the install on the machine without an Nvidia card -- clinfo does not run. Lets concentrate on the first Haswell box that has two GPUs.

clinfo output attached.

[Prime95]

Running without the -d switch crashes:

C:\Users\George\Desktop\mfakto-0.13win\mfakto-0.13win>mfakto_x64
mfakto 0.13-Win (64bit build)


Runtime options
  Inifile                   mfakto.ini
  Verbosity                 1
  SieveOnGPU                yes
  GPUSievePrimes            82486
  GPUSieveSize              64Mi bits
  GPUSieveProcessSize       16Ki bits
  WorkFile                  worktodo.txt
  ResultsFile               results.txt
  Checkpoints               enabled
  CheckpointDelay           300s
  Stages                    enabled
  StopAfterFactor           class
  PrintMode                 compact
  V5UserID                  none
  ComputerID                none
  TimeStampInResults        yes
  VectorSize                4
  GPUType                   AUTO
  SmallExp                  no
Compiletime options
  MORE_CLASSES              enabled
Select device - GPU not found, fallback to CPU.
Get device info - Compiling kernels.

OpenCL device info
  name                      Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz (GenuineInt
el)
  device (driver) version   OpenCL 1.2 AMD-APP (1214.3) (1214.3 (sse2,avx))
  maximum threads per block 1024
  maximum threads per grid  1073741824
  number of multiprocessors 4 (4 compute elements)
  clock rate                3400MHz

Automatic parameters
  threads per grid          2097152
  optimizing kernels for    CPU

running a simple selftest ...
########## testcase 4/17 (#30) ###########
C:\Users\George\Desktop\mfakto-0.13win\mfakto-0.13win>

[Prime95]

Executing with -d 1 fails with the same output.

Executing with -d 2:

Select device - GPU not found, fallback to CPU.
Error: Only 1 devices found. Cannot use device 2 (bad parameter to option -d).
init_CL(1, 2) failed

With -d 11:

Select device - GPU not found, fallback to CPU.
Get device info - Compiling kernels.
Error -43 (Invalid build options): clBuildProgram
init_CL(1, 11) failed

With -d 21:

Select device - Get device info - Compiling kernels.

        BUILD OUTPUT
Error in processing command line: Don't understand command line argument "-O3"!
        END OF BUILD OUTPUT
Error -11 (Build program failure): clBuildProgram
init_CL(1, 21) failed

C:\Users\George\Desktop\mfakto-0.13win\mfakto-0.13win>mfakto_x64  -d 21

[Prime95]

After downloading Intel's latest drivers and SDK for OpenCL, clinfo.exe output:

[Prime95]

Samples from the Intel OpenCL SDK

http://software.intel.com/en-us/arti...tting-started/