The Ethminer has an option to just run some test in order to calculate the hash rate. That works for me. However, when I run nvprof with some metrics and options as below
nvprof --concurrent-kernels on --profile-api-trace all \ --profile-from-start on --system-profiling off --unified-memory-profiling per-process-device \ --track-memory-allocations off --device-buffer-size 8 --device-cdp-buffer-size 8 \ --openacc-profiling on --devices 0 --aggregate-mode on \ --metrics flop_sp_efficiency,flop_count_sp,flop_count_sp_add,flop_count_sp_fma,flop_count_sp_mul,flop_count_sp_special \ -o run1.nvvp --log-file-verbose run1.nv.log ethminer -U -M 0
the calculated has rate will be zero and the profiler finishes quickly.
Is that normal? Any thought?