3D Graphics Rendering Using

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3-D Graphics Rendering Using LINUX CLUSTERS
Arjun Jain Harish G. Naik R. V. College of
Engineering, Bangalore
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Contents

• Brief Introduction to Clusters
• Parallel Virtual Machines (Introduction setup)
• Ray-Tracing
• PVM Pov-Ray
• Demo

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Parallel Virtual Machine(Introduction)

• System of Heterogeneous nodes
• Message passing system
• Carry out parallel computation

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Parallel Virtual Machine(Setup)

• 1. Download pvm3.4.0.tgz into your user
  directory (e.g. /home/aj).
• 2. Add the following to your .bash_profile
  file
• PVM_ROOTHOME/pvm3
• PVM_DPATHPVM_ROOT/lib/pvmd
• PVM_ARCHLINUX
• export PVM_ROOT PVM_DPATH PVM_ARCH
• 3. Logout and then login again as your
  username to install the new environment.
• 4. Now untar the PVM files with tar -zxvf
  pvm3.4.0.tgz

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Parallel Virtual Machine(Setup)

• 5. Change directory into /pvm3
• 6. Run make and let the compile proceed.
• 7. When complete move back to your home
  directory and issue the pvm command. You should
  see the pvm prompt. If so all is well. Type halt
  to exit pvm.
• 8. Repeat this on each of the machines in the
  cluster.
• 9. Now test that you can add machines to the
  cluster. Say
• pvm pvm.hosts
• and check configuration at pvm prompt by
• pvmconf and you should be getting something
  like
• 3 hosts, 1 data format
• HOST DTID ARCH SPEED
• arjun 40000 SUNMP 1000
• harish 80000 SUNMP 1000
• aj c0000 SUNMP 1000

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Ray Tracing

• Generated by tracing rays of light
• Reads from a source file
• Generated in computer memory
• Output written to file or screen

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POV-Ray

• Persistence Of Vision Raytracer
• 3-dimensional raytracing engine
• Simulates the way light interacts
• Creates 3-D pictures and animation
• Images are photo realistic

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PVMPOV

• Rendering on heterogeneous systems
• Parallel option only if - N option
• Else as a single task
• Centralized scheme
• 1-master many slaves
• Master divides image into blocks
• Blocks are assigned to slaves

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PVMPOV(contd...)

• Sent back to master after rendering
• Master combines to form one image
• Master may or may not render
• Rendering possible even if a slave fails
• Starts slaves at reduced priority
• If master fails slaves time out

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PVM-POV(Setting up)

• Download sources
• POV-Ray sources povuni_s.tgz
• PVMPOV sources pvmpov-3.1g2.tgz
• Unpack sources
• Patching PVMPOV
• Build PVMPOV
• Install Binaries

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PVM-POV(Using)

• Add hosts to pvm.hosts
• Start PVM
• pvm pvm.hosts
• Locate PVM object script files
• Start PVMPOV
• pvmpov

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Demo

• Povray on Uniprocessor system
• PVM-Pov on PVM Cluster

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Conclusion

• Clusters can be easily setup
• Can be used for other applications
• Others - LAM, OpenMosix etc.

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Sources

• www.povray.org - POVRAY sources for UNIX
• PVM home http//www.epm.ornl.gov/pvm/pvm_home.html
  
• PVM Parallel Virtual Machine - A User's Guide
  and Tutorial for Networked Parallel Computing, Al
  Geist, Adam Beguelin, Jack Dongarra, Robert
  Manchek, Weicheng Jiang and Vaidy Sunderam, MIT
  Press. Available athttp//www.netlib.org/
• PVMPOV from sunsite.unc.edu

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Reach us

• Harish G. Naik, VII semester CSE, RVCE
• harishgnaik_at_yahoo.com
• http//harishnaik.8m.net
• Arjun Jain, V Semester CSE, RVCE
• arjun_jain_at_yahoo.com