I use CAL/IL for GPGPU calculations on AMD GPUs. But it seems neither APP SDK v2.6 nor v2.7 doesn't allow to use CAL runtime for Radeon HD7970.
I can't tell you yet where the problem is exactly (my customer reports about this problem with HD7970), but most likely problem with kernel compilation. In "cal.h" header file there is no CAL target for Tahiti GPUs. I thought new APP SDK v2.7 would update this header file, but no, CAL Interface Header is still has version "1.00.0 Beta".
Am I doomed to rewrite all my kernels with OpenCL to have HD7970 support?
Best regards, Dmitry.