fixed exception with no CUDA driver
fixed exception with no CUDA driver

phlip9/BIDMat,phlip9/BIDMat,phlip9/BIDMat,codeaudit/BIDMat,phlip9/BIDMat,codeaudit/BIDMat,codeaudit/BIDMat,codeaudit/BIDMat,codeaudit/BIDMat,phlip9/BIDMat