hi blahblahblah, I had same error, and tried your way. /I did this :/ user@ubuntu:~/pycuda-2011.2.2$ python Python 2.7.3 (default, Apr 20 2012, 22:39:59) [GCC 4.6.3] on linux2 >>> import pycuda.driver as cuda Traceback (most recent call last): File "<stdin>", line 1, in <module> File "pycuda/driver.py", line 2, in <module> from pycuda._driver import * ImportError: No module named _driver /But i got error here too: / user@ubuntu:~$ python >>> import pycuda.driver as cuda Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pycuda-2011.2.2-py2.7-linux-x86_64.egg/pycuda/driver.py", line 2, in <module> from pycuda._driver import * ImportError: libcurand.so.4: wrong ELF class: ELFCLASS32 I am doing something wrong. Can you please elaborate ?

Download the 64-bit CUDA toolkit. Andreas