#!/bin/sh
DEFAULT_LOOPBACK_BANDWIDTH="498000000"
DEFAULT_LOOPBACK_LATENCY="0.000004"
DEFAULT_NETWORK_BANDWIDTH="$((26 * 1024 * 1024))"
DEFAULT_NETWORK_LATENCY="0.000005"
DEFAULT_NUMPROCS="4"
DEFAULT_POWER="100"

LOOPBACK_BANDWIDTH="${DEFAULT_LOOPBACK_BANDWIDTH}"
LOOPBACK_LATENCY="${DEFAULT_LOOPBACK_LATENCY}"
NETWORK_BANDWIDTH="${DEFAULT_NETWORK_BANDWIDTH}"
NETWORK_LATENCY="${DEFAULT_NETWORK_LATENCY}"
NUMPROCS="${DEFAULT_NUMPROCS}"
POWER="${DEFAULT_POWER}"

while true; do
  case "$1" in
   "-np")
      NUMPROCS="$2"
      shift 2
    ;;
   "-bandwidth")
      NETWORK_BANDWIDTH="$2"
      shift 2
    ;;
   "-latency")
      NETWORK_LATENCY="$2"
      shift 2
    ;;
    *)
      break
    ;;
  esac
done

EXEC="$1"
shift

PLATFORMTMP="$(mktemp tmpXXXXXX)"
#PLATFORMTMP="pla.xml"

cat > ${PLATFORMTMP} <<PLATFORMHEAD
<?xml version='1.0'?>
<!DOCTYPE platform SYSTEM "simgrid.dtd">
<platform version="2">
PLATFORMHEAD

for (( i=${NUMPROCS}; $i ; i=$i-1 )) do
  echo "  <host id=\"host$i\" power=\"${POWER}\"/>" >> ${PLATFORMTMP}
  echo "  <link id=\"loop$i\" bandwidth=\"${LOOPBACK_BANDWIDTH}\" latency=\"${LOOPBACK_LATENCY}\"/>" >> ${PLATFORMTMP}
  echo "  <link id=\"link$i\" bandwidth=\"${NETWORK_BANDWIDTH}\" latency=\"${NETWORK_LATENCY}\"/>" >> ${PLATFORMTMP}
done

for (( i=${NUMPROCS}; $i ; i=$i-1 )) do
  for (( j=${NUMPROCS}; $j ; j=$j-1 )) do
    if [ $i -eq $j ]; then
      echo "  <route src=\"host$i\" dst=\"host$j\"><link:ctn id=\"loop$i\"/></route>" >> ${PLATFORMTMP}
    else
      echo "  <route src=\"host$i\" dst=\"host$j\"><link:ctn id=\"link$i\"/><link:ctn id=\"link$j\"/></route>" >> ${PLATFORMTMP}
    fi
  done
done

cat >> ${PLATFORMTMP} <<PLATFORMFOOT
</platform>
PLATFORMFOOT

APPLICATIONTMP="$(mktemp tmpXXXXXX)"
#APPLICATIONTMP="app.xml"

cat > ${APPLICATIONTMP} <<APPLICATIONHEAD
<?xml version='1.0'?>
<!DOCTYPE platform SYSTEM "simgrid.dtd">
<platform version="2">
APPLICATIONHEAD

for (( i=${NUMPROCS}; $i ; i=$i-1 )) do
  echo "  <process host=\"host$i\" function=\"smpi_simulated_main\">" >> ${APPLICATIONTMP}
  for ARG in $*; do
    echo "    <argument value=\"${ARG}\"/>" >> ${APPLICATIONTMP}
  done
  echo "  </process>" >> ${APPLICATIONTMP}
done

for (( i=${NUMPROCS}; $i ; i=$i-1 )) do
  echo "  <process host=\"host$i\" function=\"smpi_sender\"/>" >> ${APPLICATIONTMP}
  echo "  <process host=\"host$i\" function=\"smpi_receiver\"/>" >> ${APPLICATIONTMP}
done

cat >> ${APPLICATIONTMP} <<APPLICATIONFOOT
</platform>
APPLICATIONFOOT

${EXEC} ${PLATFORMTMP} ${APPLICATIONTMP}
rm ${PLATFORMTMP} ${APPLICATIONTMP}