idb discontinued, but mpiexec doesn't know

I've read somewhere that idb was being discontinued. Yet it is still possible to ask for it through the various flavour of mpiexec:

[alainm@tagir test]$ which  mpiexec mpirun mpiexec.hydra

/softs/intel/impi/5.0.1.035/intel64/bin/mpiexec

/softs/intel/impi/5.0.1.035/intel64/bin/mpirun

/softs/intel/impi/5.0.1.035/intel64/bin/mpiexec.hydra

[alainm@tagir test]$ mpirun -idb pwd

mpiexec: IDB_HOME is not set

mpiexec: idb -pid 21681 -mpi2 -parallel mpiexec.hydra

sh: idb: command not found

^C[mpiexec@tagir] Sending Ctrl-C to processes as requested

[mpiexec@tagir] Press Ctrl-C again to force abort      <-- même pas cap!

^C^C

^Z

[1]+  Stopped                 mpirun -idb pwd

[alainm@tagir test]$ kill -KILL %1

[1]+  Stopped                 mpirun -idb pwd

[alainm@tagir test]$

  ** de même que mpiexec, mais différemment:

[alainm@tagir test]$ mpiexec -idb pwd

cannot find "idb" in your $PATH:

/softs/intel/vtune_amplifier_xe_2015.1.0.367959/bin64:/softs/intel//itac/9.0.1.033/intel64/bin:/softs/intel/inspector_xe_2015.1.0.366509/bin64:/softs/intel//impi/5.0.1.035/intel64/bin:/softs/intel/composer_xe_2015.0.090/bin/intel64:/softs/intel/composer_xe_2015.0.090/mpirt/bin/intel64:/softs/intel/composer_xe_2015.0.090/debugger/gdb/intel64_mic/bin:/softs/exp/python-3.4.1-intel14/bin:/softs/exp/Cython-0.20.2/bin:/usr/lib64/qt-3.3/bin:/softs/Wolfram/Mathematica/9.0/Executables:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/softs/dislin/bin:/usr/lpp/mmfs/bin:/softs/psfex-3.9.1/bin:/softs/sm2_4_34/bin:/home/alainm/bin

[1]+  Killed                  mpirun -idb pwd

[alainm@tagir test]$

regards