Getting Started

Getting Started

1. Installation

   ./configure --prefix="your installation dir" CC="your mpicc"
   make
   make install
   

2. Link with MPI Program [Example]

   mpicc -o test test.c -lcasper
   

   Or you can set LD_PRELOAD to dynamically load Casper in front of MPI.

   mpicc -o test test.c
   export LD_PRELOAD="Your Casper installation dir"/lib/libcasper.so
   

3. Execution

   You can set the number of ghost processes per node through the environment variable CSP_NG, it is set to 1 by default.

   [Example 1] Running on 2 node, 2 ghost processes and 6 user processes on each node.

   export CSP_NG=2
   mpiexec -np 16 -ppn 8 ./test
   

   [Example 2] Running on 4 node, 4 ghost processes and 20 user processes on each node.

   export CSP_NG=4
   mpiexec -np 96 -ppn 24 ./test