https://community.intel.com/t5/Intel-MPI-Library/MPI-rank-environment-variable/m-p/830346#M1321 After some examination of the intel MPI env var set, I found $PMI_RANK that did the trick. Wed, 04 May 2011 12:51:59 GMT mihainl 2011-05-04T12:51:59Z https://community.intel.com/t5/Intel-MPI-Library/MPI-rank-environment-variable/m-p/830345#M1320 <P>Hi all,<BR /><BR />i need to get the rank number for each process through an environment variable. after some googling i found MPD_JRANK here<BR /><BR /><A href="http://developers.sun.com/sunstudio/documentation/techart/mpi_apps/">http://developers.sun.com/sunstudio/documentation/techart/mpi_apps/</A><BR /><BR />but the variable seems not to be working withmy 4.0.1.007 MPI install... <BR /><BR />I am looking for something similar to Open MPI's OMPI_COMM_WORLD_RANK.<BR /><BR />thanks a lot!<BR />Mihai</P> Wed, 04 May 2011 11:36:38 GMT https://community.intel.com/t5/Intel-MPI-Library/MPI-rank-environment-variable/m-p/830345#M1320 mihainl 2011-05-04T11:36:38Z https://community.intel.com/t5/Intel-MPI-Library/MPI-rank-environment-variable/m-p/830346#M1321 After some examination of the intel MPI env var set, I found $PMI_RANK that did the trick. Wed, 04 May 2011 12:51:59 GMT https://community.intel.com/t5/Intel-MPI-Library/MPI-rank-environment-variable/m-p/830346#M1321 mihainl 2011-05-04T12:51:59Z