linear algebra algorithms in c and cuda

as of dec 27, 2014
added 1 cuda function for matrix multiplication
- using tiling and shared memory

as of dec 26, 2014
added 1 c function for matrix multiplication
- mimic memory access pattern on gpu

as of dec 25, 2014
added 3 versions of sequential code for matrix multiplication
added 1 simple version of parallel code for matrix multiplication
- 15x speed up on m2070