Parallel Computing

• unix_ten_commands.pdf
• vim kate gedit xterm ssh

N-Body Problem

• teapot_demo.c
• teapot_demo.c.txt
• spherical coordinates (Wikipedia)

Explicit Multi-Threading

• XMT home (external)
• classnotes.pdf (external)
• scan (external)

Spring 2013

• Ray Tracing
• bitmap PPM text P3 binary P6
• Format
  • filetype (P3, P6)
  • numcols
  • numrows
  • maxval (usually 255)
  • pixel values... (in row major order)
• Data is tokenized by whitespace, otherwise spacing is irrelevant.
• Each pixel is three ints red-green-blue (text P3) or three bytes (binary P6).
• Advice... avoid binary files (P6) even though total bytes are 2 or 3 or 4 to 1.
• ray0 - random color data
• ray1 - three circles determine which is seen by eye for each pixel
• ray2 - light source plus ambient determine if in shadow otherwise dot product
• ray3 - add a floor easy plane y=0.0 linear equation plus shadow or dot product
• ray4 - checkerboard floor but be careful with MOD near zero
• ray5 - reflection... recursion recursion (...refraction ...similar) reflection_one_half.png
• raytrace.txt
• configuration file
  • spheres floor walls etc
  • handle many objects
  • need normals
  • pre-process (e.g., mesh of spheres)
• OpenMP
  • pixels (may need super-sampling)
  • movie frames
• Ideas
  • rolling ornaments
  • falling ornaments
  • rising setting sun
  • light bulb pendulum (interrogation?)
• convert -loop 1 -delay 10 frame*.ppm movie.gif
• "OR" if filesystem quota space is an issue perhaps...
• convert frame000.ppm frame000.png
• convert frame001.ppm frame001.png
• ...
• convert frame999.ppm frame999.png
• convert -loop 1 -delay 10 frame*.png movie.gif
• movieinstructions.c.txt
• rolling.gif (8.8 MB)
• Surface Triangulation of a Sphere
  • x.txt
  • f.txt
  • n.txt
• elephant source
  • x.txt (1.8 MB)
  • f.txt (1.9 MB)
  • n.txt (3.1 MB)
• omp_demo.c.txt

Temporary Archive of Fall 2012

• link
• As of 28 January 2013.