https://community.intel.com/t5/Software-Archive/Run-time-error-message/m-p/963111#M22288 Thank you so much! It worked. I read where the default stack size is 1MB, so I guessed and made it 2MB, which worked. Wed, 15 Aug 2001 08:41:15 GMT jschomaker 2001-08-15T08:41:15Z https://community.intel.com/t5/Software-Archive/Run-time-error-message/m-p/963110#M22287 I get run-time error message: forrtl: severe&lt;170&gt;: Program Exception - stack overflow, Line 7 of CONSTR2. I've converted old FORTRAN 77 code into doing dynamic array allocation and am now trying to figure out how to fix the stack overflow problem. My programs are set up very simply, with a module containing allocatable array declarations, a main subroutine, and other subroutines USING the module, and some subroutines called by main to allocate the arrays. There appears to be no problem allocating the space since I display an error message if there is a problem i.e. <BR />ALLOCATE (ARRAY1(NM1CST),STAT=IERR) <BR />IF (IERR .NE. 0) THEN <BR /> DISPLAY ERROR <BR />ENDIF <BR />It runs beautifully for many models, except when it gets to huge ones. <BR />Can anyone help??? Wed, 15 Aug 2001 01:29:54 GMT https://community.intel.com/t5/Software-Archive/Run-time-error-message/m-p/963110#M22287 jschomaker 2001-08-15T01:29:54Z https://community.intel.com/t5/Software-Archive/Run-time-error-message/m-p/963111#M22288 Thank you so much! It worked. I read where the default stack size is 1MB, so I guessed and made it 2MB, which worked. Wed, 15 Aug 2001 08:41:15 GMT https://community.intel.com/t5/Software-Archive/Run-time-error-message/m-p/963111#M22288 jschomaker 2001-08-15T08:41:15Z