I just moved from STAR3.2 to STAR4. Basically I used to have a array defined in posdat like

Posdat Dimension X(NCTMXU) POINTER(P_X,X) COMMON/A00/P_X IF(INTFLG(1).EQ.0) then ALLOCATE x MEMORY INTFLG(1)=1 endif

then I use this array in other user subroutine just by including the common block

Dimension X(4) POINTER(P_X,X) COMMON/A00/P_X

What is the similar way to do it in STAR4?

For converting user coding, there is one email address you can contact. It is something like nur79@de.cd-adapco.com. You need to ask the Nuremberg office for the correct address. This is a team of developer that works especially on user-coding support for v4 as they said during the user conference and the new Nuremberg office opening. There is also a new team of consultants in US that are dedicated to update user-coding for v4 es-ice runs.

posdat in Star v4 works with Fortran 90. Use Module for passing variables from subroutines to others.