ethminer multi-gpu ignore onboard

[yoyome]

I'm sure this is a very easy fix but I just built a 6 gpu rig and I can't use ethminer anymore.
When it starts it errors out with:

Creating DAG buffer failed: clCreatebuffer -61
OpenCL Error: clEnqueueWriteBuffer -38

I do realize that is my onboard graphics chipset which can't process the DAG but how do i make it use all the other 6 that are ready to rock instead???

Code:

C:\Ethermine\etherminer>ethminer --list-devices

Listing OpenCL devices.
FORMAT: [platformID] [deviceID] deviceName
[0] [0] Intel(R) HD Graphics 610
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 3374555136
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 2147483647
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
[1] [0] Ellesmere
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 4294967296
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4026531840
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
[1] [1] Ellesmere
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 4294967296
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4026531840
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
[1] [2] Ellesmere
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 4294967296
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4026531840
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
[1] [3] Ellesmere
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 4294967296
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4026531840
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
[1] [4] Ellesmere
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 4294967296
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4026531840
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
[1] [5] Ellesmere
        CL_DEVICE_TYPE: GPU
        CL_DEVICE_GLOBAL_MEM_SIZE: 4294967296
        CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4026531840
        CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
  X  21:54:36|main      CUDA error: No CUDA driver found

for whatever reason it just hangs onto the first one and just loops through that error.

any help is greatly appreciated.

(btw claymore works ok and ignores the intel onboard chip)

[activescott]

Try disabling the onboard graphics in the bios. I do that and just use SSH to access the box or if absolutely necessary plug a monitor into the GPU that is in the 16x pci-e slot close to the CPU. Hope that helps!

[yoyome]

after fiddling with it a bit more found this from the --help

Code:

--opencl-platform 1

It now works fine and uses all the gpus except the onboard chipset
now I only need to focus on getting them hashes higher