README.txt

Following are the steps for VolpexMPI

To compile VolpexMPI
1.In dir VolpexMPI/trunk change file Makefile.defs
   VOLPEX_DIR    = $current working path$
   CC           = add the compiler to compile C code, default is gcc
   CFLAGS       = add optimization flags for C code, deafult is O3
   LDFLAGS      = add link, dafulat is statically linked
   FC           = compiler to compile fortran code, default is gfortran
   FFLAGS       = add optimization flags for Fortran code, deafult is O3
   CLUSTER	= 1 (to enable clustering), default is 0
   
   In order to enable debug options
   add -DPRINTF -O0 -g options to CFLAGS
   In order to enable hpx
   -DCOMPILE_HPX

2. make all

For hpx_mpi_hello_world:
    go to VolpexMPI?trunk/hpx-tutorial-examples
    edit the Makefile and change:
    PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/xpress/default-hpx/lib/pkgconfig
    to your pkgconfig path.
    make hpx_mpi_hello_world
    the executable will be in VolpexMPI/trunk/bin

command to execute with hpx support
in dir VolpexMPI/trunk/bin
./mcfarun -np [# of processes] -hostfile [hostfile] -hpx ./application

command to execute without hpx support
in dir VolpexMPI/trunk/bin
./mcfarun -np [# of processes] -hostfile [hostfile] ./application

hostfile: list of nodes where application to be executed
edit this file with the node names you want to use
if hostfile is not specified all processes execute on front node