Hi every body at LAM/MPI

Introduction:

I have recently subscribed to this mailing list. I am glad to that I have entered the community of parallel programming.

I am newbie at LAM/MPI (and not expert at LINUX) at this point; and have a problem with LAM/MPI 7.0.6

My case:

I have made my small cluster with 6 nodes (64bit) and installed CentOS 4.4 (64bit) on each of them. During Linux installation, I choose LAM to be installed for head node as well as each of compute nodes. I have done lamboot successfully.

My questions:

1- By default, wrapper compiler mpif77 refers to g77 compiler. But, I want to use gfortran instead of g77 in parallel mode, .i.e. I want that mpif77 uses gfortran while compiling a FORTRAN program. Please help me.

(I have read LAM installation guide and had a look at user guide. All over these mans authors pre-suppose that you want to install LAM yourself. However, in my case, CentOS ITSELF has installed LAM and I don't know where are source files, installation directory, etc.)

2- To compile and run parallel programs is it necessary to install LAM/MPI as well as C/F compilers in head node and ALL compute nodes? (NFS running on head with /home directory)

Best wishes,