Show me a real problem

• Compile a project with GNU make

• In the makefile, redefine the compiler

  • CC = bpsh -Nx gcc

• Run make using eight Beowulf nodes

  • make -j8

• How does this work?

  • bpsh causes the compile to run on a slave
  • make launches 8 jobs in parallel
  • The scheduler (-Nx) distributes the load to all slaves

Notes: