opps actually Pyrit does detect/use my GPU..

Code:
root@kali:~# optirun pyrit benchmark
Pyrit 0.4.1-dev (svn r308) (C) 2008-2011 Lukas Lueg http://pyrit.googlecode.com
This code is distributed under the GNU General Public License v3+

Running benchmark (9002.1 PMKs/s)... - 

Computed 9002.07 PMKs/s total.
#1: 'CUDA-Device #1 'GeForce GT 630M'': 5761.6 PMKs/s (RTT 2.8)
#2: 'CPU-Core (SSE2/AES)': 520.8 PMKs/s (RTT 3.0)
#3: 'CPU-Core (SSE2/AES)': 521.7 PMKs/s (RTT 3.0)
#4: 'CPU-Core (SSE2/AES)': 523.7 PMKs/s (RTT 3.0)
#5: 'CPU-Core (SSE2/AES)': 523.5 PMKs/s (RTT 3.0)
#6: 'CPU-Core (SSE2/AES)': 518.2 PMKs/s (RTT 3.0)
#7: 'CPU-Core (SSE2/AES)': 523.5 PMKs/s (RTT 3.0)
#8: 'CPU-Core (SSE2/AES)': 507.0 PMKs/s (RTT 3.0)
root@kali:~#