Seems kinda slow... I get:
[2013-12-30 19:29:24] GPU #0: Tesla C2050, 946176 hashes, 182.60 khash/s
[2013-12-30 19:29:26] GPU #0: Tesla C2050, 358400 hashes, 177.92 khash/s
with -i 0 -l F28x16 -C 1 -H 1
Cuda 5.5 driver 319.17
CudaMiner compiled from github on debian wheezy
Thanks. Using -H 1 can indeed increase to 184kh/s, an ~2% increase of speed. But it uses 15% more cpu time. I am using the cpus to mine primecoin. At current exchange rate, it is better to use the cpu cycles on primecoins.