This lab is designed to explore the use of inline assembler, and its use in open source software.
Lab 6
References
Part A - Class Lab
1. There is a version of the volume scaling problem from the Algorithm Selection Lab for AArch64 which incorporates inline assembler in /public/spo600-20181-inline-assembler-lab.tgz on each of the AArch64 SPO600 Servers. Copy, build, and verify the operation of this program on one of those servers.
2. Test the performance of this solution and compare it to your previous solution(s). Adjust the number of samples (in vol.h) to produce a measurable runtime, and adjust your code for comparable test conditions (number of samples, 1 array vs. 2 arrays, and so forth).
3. Find the answers to the questions identified with "Q:" in the comments in the source code.
4. Blog about your results in detail, including your reflections.
Part B - Individual Task
1. Select one of the following open source packages which is not claimed by another person in the class. Put your name beside it in (parenthesis) to claim it.
- amule
- ardour
- avidemux
- blender
- bunny
- busybox
- chicken
- cln
- coq
- cxxtools
- faad2
- fawkes
- gauche
- gmime
- gnash
- gridengine
- groonga
- hoard
- iaxclient
- k9copy
- lame
- libfame
- libgcroots
- libmad
- libmlx4
- lightsparc
- mediatomb
- mjpegtools
- mlt
- mosh
- mpich2
- ocaml-zarith
- openblas
- opencore-amr
- openser
- par2cmdline
- picprog
- qlandkartegt
- sooperlooper
- traverso
2. Find the assembly-language code in that software, and determine:
- How much assembley-language code is present
- Is the assembly code in its own file (.s or .S) or inline
- Which platform(s) the assembler is used on
- What happens on other platforms
- Why it is there (what it does)
- Your opinion of the value of the assembler code VS the loss of portability/increase in complexity of the code.
3. Blog your results in detail.