Compiling and Executing a Fortran 90 Program With IMSL

NOTE: The instructions to compile and execute a Fortran 90 program calling one or more IMSL routines begins at section "Putting It Together" below. You can ignore the background information that precedes that section.

• IMSL Directories

  /opt/lib/imsl_toolkit_1.1/CTT1.1/
  
     INSTALL
     bristol
     bin
     help 
     include 
     notes
     versions
        bristol
        cnl       
         (IMSL C Numerical Libraries Version 2.0)
        f90
         (IMSL Fortran 90 MP Library Version 3.0)
        fnl
         (IMSL Fortran Numerical Libraries Version 3.01)
        version.table
  
     examples/solaris/f90/manual/
        (example programs)
  	    .
  	    .
     examples/solaris_1/f90/manual/
        (example programs)
  	    .
  	    .
  
     ctt/bin/
      * cttsetup.csh
        solaris.csh
        solaris_1.csh
  	.
  	.
  
  
   * lib/lib.solaris/
        blas.ll
        build_blas
        exblas.ll
        imslfnl.dat
        imslerr.bin
        imsls_e.bin
        libimsl.a
        libimsl.so
        libimsl.so.3.1
        libimslcmath.a
        libimslcmath.so
        libimslcmath.so.2.1
        libimslcmathsup_imsl.a
        libimslcmathsup_imsl.so
        libimslcmathsup_imsl.so.2.1
        libimslcmathsup_perf.a
        libimslcmathsup_perf.so		
        libimslcmathsup_perf.so.2.1
        libimslcstat.a
        libimslcstat.so
        libimslcstat.so.2.1	
  				
     lib/lib.solaris_1/libimsl.a
        blas.ll
        build_blas
        exblas.ll
        imslfnl.dat
        libimsl.a
        libimsl.so
        libimsl.so.3.1
  
  
  

  The "*" items above are those that are directly relevant to compiling and running an F90 program calling an IMSL routine.. The lib.solaris directory contains the IMSL routine library libimsl.a as well as other necessary libraries. The cctsetup.csh file needs to be sourced to define the necessary environment variables. This file, in turn, calls on the solaris.csh file. It selects solaris.csh as opposed to solaris_1.csh via computing the architecture, which is "solaris". I.e., see file cctsetup.csh which uses commands:

  	setenv VNI_DIR /opt/lib/imsl_toolkit_1.1
  	setenv CTT_DIR $VNI_DIR/CTT1.1
  	setenv VNI_ARCH `$CTT_DIR/ctt/bin/arch`
  

• Fortran 90

  Compiling a Fortran 90 program calling one or more IMSL routines currently requires that the WorkShop 4.2 Fortran libraries and compiler be used. This library is:

         /opt/workshop4/SUNWspro/SC4.2/lib
  

• Putting It Together

  To compile a Fortran 90 program calling an IMSL routine you need to use the Fortran 90 compiler, under workshop 4.2 rather than the current workshop version 5.0 and define the necessary environment variables for IMSL and Fortran 90. Here's one way to accomplish this:
  • Set up the following aliases (e.g., in your .localalias file):

     
    
     
    
      alias f90imslsetup 'source /opt/lib/imsl_toolkit_1.1/CTT1.1/ctt/bin/cttsetup.csh'
    
      alias f90imsl '/opt/workshop4/SUNWspro/SC4.2/bin/f90 \!* -o
              \!$:r.exe $F90FLAGS $LINK_F90'
    

  • To compile a program (e.g., "myprogram.f90") calling an IMSL routine, at the UNIX prompt (%), type

             f90imslsetup
    

    followed by

     
             f90imsl myprogram.f90
    

    The compilation using the f90imsl alias will produce an executable with the same name as your f90 source program and a suffix of ".exe" For example, "myprogram.exe". Note that you need only type f90imslsetup once preceding your IMSL f90 compilations and executions.

• Avoiding Interaction of IMSL Fortran 90 Environment Variables With Other Tasks

  When you source the cttsetup.csh file (e.g., via f90imslsetup) you define a large set of environment variables which may interfere with other non-IMSL tasks. To avoid this problem, use the initial window solely for your IMSL work and exit the window when you have finished. If you need to do other non-IMSL work concurrently, open a second window. For example, if you are using xterm windows, type

   
             % xterm &
             % f90imslsetup 
  

  The first command opens a second xterm window; the second sets up the vars for IMSL work in your original window. Note the order of the commands. If you do the reverse, the environment variables will carry over to the second xterm window which is what you don't want.