Why is my miner picking up 4 devices when i only have 2 cards?

[aaa801]

Code:

[02/04/12 17:30:47] Started
[02/04/12 17:30:47] Connecting to: http://216.231.138.132:8338/
[02/04/12 17:30:47] Using AMD Accelerated Parallel Processing OpenCL 1.1 AMD-APP (851.4)
[02/04/12 17:30:49] BFI_INT patching enabled, disabling hardware check errors
[02/04/12 17:30:49] Added Cypress (#1) (18 CU, local work size of 128)
[02/04/12 17:30:52] BFI_INT patching enabled, disabling hardware check errors
[02/04/12 17:30:52] Added Cypress (#2) (18 CU, local work size of 128)
[02/04/12 17:30:52] Using ATI Stream OpenCL 1.0 ATI-Stream-v2.1 (145)
[02/04/12 17:31:00] BFI_INT patching enabled, disabling hardware check errors
[02/04/12 17:31:00] Added Cypress (#3) (18 CU, local work size of 128)
[02/04/12 17:31:07] BFI_INT patching enabled, disabling hardware check errors
[02/04/12 17:31:07] Added Cypress (#4) (18 CU, local work size of 128)

#1 and #3 seem to take forever to actualy hash anything

this is with using 2 5850's and using diablo miner, alnough i have had something similar in cgminer

[ssateneth]

You have both 2.1 SDK and some other SDK installed. Looks like 2.6 SDK, which is bad for radeon 5xxx. You need to specify manually what "devices" you want to mine on. You will want to mine on 2.1 sdk though because it is the most efficient for 5xxx

[-ck]

Each "display enabled" device, be that in a configuration explicitly, or just by attaching it to a monitor, is seen as an opencl device. OpenCL is too stupid to tell apart 2 physical devices from one physical device attached to 2 monitors.

[ssateneth]

Each "display enabled" device, be that in a configuration explicitly, or just by attaching it to a monitor, is seen as an opencl device. OpenCL is too stupid to tell apart 2 physical devices from one physical device attached to 2 monitors.

Naybe, but this is irrelevant to his situation.

[02/04/12 17:30:47] Using AMD Accelerated Parallel Processing OpenCL 1.1 AMD-APP (851.4)
[02/04/12 17:30:52] Using ATI Stream OpenCL 1.0 ATI-Stream-v2.1 (145)

This is clearly a case of 2 installed SDK's.