why when bencmarking my mac pro, no trace of GPU usage is listed ??? it's a 8800GT nvidia running on mac os x 10.5.8

why when bencmarking my mac pro, no trace of GPU usage is listed ??? it's a 8800GT nvidia running on mac os x 10.5.8

I think you need to go up to BOINC v6.10.28 before the GPU use on Mac worked properly - and there are very, very few projects which have Mac GPU applications.

Benchmarking is a CPU function only - you never see GPU usage during benchmark (indeed, all GPU applications are unloaded during benchmarks).

why when bencmarking my mac pro, no trace of GPU usage is listed ??? it's a 8800GT nvidia running on mac os x 10.5.8

Until just over a week ago, No Mac versions of Boinc could detect the GPU because of the lack of Nvidia 64bit Cuda drivers,
and if you installed the 32bit Cuda drivers, Boinc still couldn't see the GPU,
Since then, Charlie has done an Experimental 32bit Boinc with 64bit support that correctly detects the GPU, 6.10.29 is the latest, available from the downloads area.

See this thread in the Q&A Section: Mac user GPU

Claggy