Lecture 13

Learning objectives

After this class, you should be able to:

1. Use compiler flags, standard library functions, and SIMD instrinsics to optimize your code.

Reading assignment

1. Lecture 13 slides.
2. Article on memory optimization.
3. Lecture 13 example codes.

Exercises and review questions

• Questions on current lecture's material
  1. Run the lecture 13 example codes on gpu and read the codes.
  2. Search the following assembly codes: Lec13/MM.s and Lec13/MM_sse.s for the SSE SIMD instruction for single precision multiplication: mulps. Explain why the first code has worse performance than the second one. (Note: You can disassemble executables on Linux using objdump -d, in case you wish to perform similar analysis on other executables.)

• Questions on next lecture's material
  1. None.