diff --git a/code/DAMASK_spectral_single.f90 b/code/DAMASK_spectral_single.f90
deleted file mode 100644
index 9adb0914d..000000000
--- a/code/DAMASK_spectral_single.f90
+++ /dev/null
@@ -1,603 +0,0 @@
-! Copyright 2011 Max-Planck-Institut für Eisenforschung GmbH
-!
-! This file is part of DAMASK,
-! the Düsseldorf Advanced MAterial Simulation Kit.
-!
-! DAMASK is free software: you can redistribute it and/or modify
-! it under the terms of the GNU General Public License as published by
-! the Free Software Foundation, either version 3 of the License, or
-! (at your option) any later version.
-!
-! DAMASK is distributed in the hope that it will be useful,
-! but WITHOUT ANY WARRANTY; without even the implied warranty of
-! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-! GNU General Public License for more details.
-!
-! You should have received a copy of the GNU General Public License
-! along with DAMASK. If not, see <http://www.gnu.org/licenses/>.
-!
-!##############################################################
-!* $Id: mpie_spectral.f90 769 2011-02-21 14:37:38Z MPIE\m.diehl $
-!********************************************************************
-! Material subroutine for BVP solution using spectral method
-!
-! written by P. Eisenlohr,
-!            F. Roters,
-!            L. Hantcherli,
-!            W.A. Counts,
-!            D.D. Tjahjanto,
-!            C. Kords,
-!            M. Diehl,
-!            R. Lebensohn
-!
-! MPI fuer Eisenforschung, Duesseldorf
-!
-!********************************************************************
-!     Usage:
-!             - start program with mpie_spectral PathToGeomFile/NameOfGeom.geom
-!               PathToLoadFile/NameOfLoadFile.load
-!             - PathToGeomFile will be the working directory
-!             - make sure the file "material.config" exists in the working
-!               directory. For further configuration use "numerics.config"
-!********************************************************************
-program DAMASK_spectral
-!********************************************************************
-
- use DAMASK_interface
- use prec, only: pInt, pReal
- use IO
- use math
- use CPFEM, only: CPFEM_general, CPFEM_initAll 
- use numerics, only: err_div_tol, err_stress_tol, err_stress_tolrel, err_defgrad_tol,&
-                     itmax, memory_efficient, mpieNumThreadsInt       
- use homogenization, only: materialpoint_sizeResults, materialpoint_results
-!$ use OMP_LIB                                                          ! the openMP function library
-
- implicit none
- include 'fftw3.f' !header file for fftw3 (declaring variables). Library files are also needed
-! compile FFTW 3.2.2 with ./configure --enable-threads
-! variables to read from loadcase and geom file
- real(pReal), dimension(9) ::                      valuevector           ! stores information temporarily from loadcase file
- integer(pInt), parameter ::                       maxNchunksInput = 24  ! 4 identifiers, 18 values for the matrices and 2 scalars
- integer(pInt), dimension (1+maxNchunksInput*2) :: posInput
- integer(pInt), parameter ::                       maxNchunksGeom = 7    ! 4 identifiers, 3 values
- integer(pInt), dimension (1+2*maxNchunksGeom) ::  posGeom
- integer(pInt) unit, N_l, N_s, N_t, N_n                                  ! numbers of identifiers
- character(len=1024) path, line
- logical gotResolution,gotDimension,gotHomogenization
- logical, dimension(9) :: bc_maskvector
-
-! variables storing information from loadcase file
- real(pReal)                                    timeinc
- real(pReal), dimension (:,:,:), allocatable :: bc_velocityGrad, &
-                                                bc_stress             ! velocity gradient and stress BC
- real(pReal), dimension(:), allocatable ::      bc_timeIncrement      ! length of increment
- integer(pInt)                                  N_Loadcases, steps
- integer(pInt), dimension(:), allocatable ::    bc_steps              ! number of steps
- logical, dimension(:,:,:,:), allocatable ::    bc_mask               ! mask of boundary conditions
-
-! variables storing information from geom file
- real(pReal) wgt
- real(pReal), dimension(3) ::  geomdimension
- integer(pInt) homog
- integer(pInt), dimension(3) :: resolution
-
-! stress etc.
- real(pReal), dimension(3,3) ::                         ones, zeroes, temp33_Real, damper,&
-                                                        pstress, pstress_av, cstress_av, defgrad_av,&
-                                                        defgradAim, defgradAimOld, defgradAimCorr, defgradAimCorrPrev,&
-                                                        mask_stress, mask_defgrad                          
- real(pReal), dimension(3,3,3,3) ::                     dPdF, c0, s0
- real(pReal), dimension(6) ::                           cstress                                ! cauchy stress in Mandel notation
- real(pReal), dimension(6,6) ::                         dsde, c066, s066                       ! Mandel notation of 4th order tensors
- real(pReal), dimension(:,:,:,:,:), allocatable ::      workfft, defgrad, defgradold
- real(pReal), dimension(:,:,:,:), allocatable ::        coordinates
- 
-! variables storing information for spectral method
- complex(pReal) ::                                      img
- complex(pReal), dimension(3,3) ::                      temp33_Complex
- real(pReal), dimension(3,3) ::                         xinormdyad
- real(pReal), dimension(:,:,:,:,:,:,:), allocatable ::  gamma_hat
- real(pReal), dimension(3) ::                           xi, xi_central
- integer(pInt), dimension(3) ::                         k_s
- integer*8, dimension(2) ::                             plan_fft
- 
-! loop variables, convergence etc.
- real(pReal) guessmode, err_div, err_stress, err_defgrad, sigma0        
- integer(pInt)  i, j, k, l, m, n, p
- integer(pInt)  loadcase, ielem, iter, calcmode, CPFEM_mode, ierr
- logical errmatinv
- 
- real(pReal) temperature                               ! not used, but needed for call to CPFEM_general
-
-!Initializing
-!$ call omp_set_num_threads(mpieNumThreadsInt)         ! set number of threads for parallel execution set by MPIE_NUM_THREADS
-
- bc_maskvector = ''
- unit = 234_pInt
- ones   = 1.0_pReal; zeroes = 0.0_pReal
- img = cmplx(0.0,1.0)
- 
- N_l = 0_pInt; N_s = 0_pInt
- N_t = 0_pInt; N_n = 0_pInt
- gotResolution =.false.; gotDimension =.false.; gotHomogenization = .false.
- resolution = 1_pInt; geomdimension = 0.0_pReal
- 
- temperature = 300.0_pReal
-
- if (IargC() /= 2) call IO_error(102)                     ! check for correct number of given arguments
-
-! Reading the loadcase file and assign variables
- path = getLoadcaseName()
- print '(a,/,a)', 'Loadcase:      ',trim(path)
- print '(a,/,a)', 'Workingdir:    ',trim(getSolverWorkingDirectoryName())
- print '(a,/,a)', 'SolverJobName: ',trim(getSolverJobName())
-
- if (.not. IO_open_file(unit,path)) call IO_error(45,ext_msg = path)
- 
- rewind(unit)
- do
-   read(unit,'(a1024)',END = 101) line
-   if (IO_isBlank(line)) cycle                            ! skip empty lines
-   posInput = IO_stringPos(line,maxNchunksInput)
-   do i = 1, maxNchunksInput, 1
-       select case (IO_lc(IO_stringValue(line,posInput,i)))
-            case('l','velocitygrad')
-                 N_l = N_l+1
-            case('s','stress')
-                 N_s = N_s+1
-            case('t','time','delta')
-                 N_t = N_t+1
-            case('n','incs','increments','steps')
-                 N_n = N_n+1
-        end select
-   enddo                                                  ! count all identifiers to allocate memory and do sanity check
- enddo
-
-101 N_Loadcases = N_l
-
-! allocate memory depending on lines in input file
- allocate (bc_velocityGrad(3,3,N_Loadcases));       bc_velocityGrad = 0.0_pReal
- allocate (bc_stress(3,3,N_Loadcases));             bc_stress = 0.0_pReal
- allocate (bc_mask(3,3,2,N_Loadcases));             bc_mask = .false.
- allocate (bc_timeIncrement(N_Loadcases));          bc_timeIncrement = 0.0_pReal
- allocate (bc_steps(N_Loadcases));                  bc_steps = 0_pInt
-
- rewind(unit)
- i = 0_pInt
- do
-   read(unit,'(a1024)',END = 200) line
-   if (IO_isBlank(line)) cycle                           ! skip empty lines
-   i = i + 1
-   posInput = IO_stringPos(line,maxNchunksInput)
-   do j = 1,maxNchunksInput,2
-     select case (IO_lc(IO_stringValue(line,posInput,j)))
-       case('l','velocitygrad')
-         valuevector = 0.0_pReal
-         forall (k = 1:9) bc_maskvector(k) = IO_stringValue(line,posInput,j+k) /= '#'
-         do k = 1,9
-           if (bc_maskvector(k)) valuevector(k) = IO_floatValue(line,posInput,j+k) ! assign values for the velocity gradient matrix
-         enddo
-         bc_mask(:,:,1,i) = transpose(reshape(bc_maskvector,(/3,3/)))
-         bc_velocityGrad(:,:,i) = math_transpose3x3(reshape(valuevector,(/3,3/)))
-       case('s','stress')
-         valuevector = 0.0_pReal
-         forall (k = 1:9) bc_maskvector(k) = IO_stringValue(line,posInput,j+k) /= '#'
-         do k = 1,9
-           if (bc_maskvector(k)) valuevector(k) = IO_floatValue(line,posInput,j+k)  ! assign values for the bc_stress matrix
-         enddo
-         bc_mask(:,:,2,i) = transpose(reshape(bc_maskvector,(/3,3/)))
-         bc_stress(:,:,i) = math_transpose3x3(reshape(valuevector,(/3,3/)))
-       case('t','time','delta')                                            ! increment time
-           bc_timeIncrement(i) = IO_floatValue(line,posInput,j+1)
-       case('n','incs','increments','steps')                               ! bc_steps
-           bc_steps(i) = IO_intValue(line,posInput,j+1)
-     end select
- enddo; enddo
-
-200 close(unit)
-
- do i = 1, N_Loadcases
-   if (any(bc_mask(:,:,1,i) == bc_mask(:,:,2,i))) call IO_error(46,i)     ! bc_mask consistency
-   if (bc_timeIncrement(i) < 0.0_pReal) call IO_error(47,i)                 ! negative time increment forbidden
-   if (bc_steps(i) < 1_pInt) call IO_error(48,i)                            ! non-positive increments requested
-   print '(a,/,3(3(f12.6,x)/))','L:'        ,math_transpose3x3(bc_velocityGrad(:,:,i))
-   print '(a,/,3(3(f12.6,x)/))','bc_stress:',math_transpose3x3(bc_stress(:,:,i))
-   print '(a,/,3(3(l,x)/))',    'bc_mask for velocitygrad:',transpose(bc_mask(:,:,1,i))
-   print '(a,/,3(3(l,x)/))',    'bc_mask for stress:'      ,transpose(bc_mask(:,:,2,i))
-   print '(a,f12.6)','time: ',bc_timeIncrement(i)
-   print '(a,i5)','incs: ',bc_steps(i)
-   print *, ''
- enddo
-
-!read header of geom file to get the information needed before the complete geom file is intepretated by mesh.f90
- path = getModelName()
- print '(a,a)', 'GeomName: ',trim(path)
- if (.not. IO_open_file(unit,trim(path)//InputFileExtension)) call IO_error(101,ext_msg = trim(path)//InputFileExtension)
-
- rewind(unit)
- do
-   read(unit,'(a1024)',END = 100) line
-   if (IO_isBlank(line)) cycle                            ! skip empty lines
-   posGeom = IO_stringPos(line,maxNchunksGeom)             
-
-   select case ( IO_lc(IO_StringValue(line,posGeom,1)) )
-     case ('dimension')
-       gotDimension = .true.
-       do i = 2,6,2
-         select case (IO_lc(IO_stringValue(line,posGeom,i)))
-           case('x')
-              geomdimension(1) = IO_floatValue(line,posGeom,i+1)
-           case('y')
-              geomdimension(2) = IO_floatValue(line,posGeom,i+1)
-           case('z')
-              geomdimension(3) = IO_floatValue(line,posGeom,i+1)
-         end select
-       enddo
-     case ('homogenization')
-       gotHomogenization = .true.
-       homog = IO_intValue(line,posGeom,2)
-     case ('resolution')
-       gotResolution = .true.
-       do i = 2,6,2
-         select case (IO_lc(IO_stringValue(line,posGeom,i)))
-           case('a')
-             resolution(1) = IO_intValue(line,posGeom,i+1)
-           case('b')
-             resolution(2) = IO_intValue(line,posGeom,i+1)
-           case('c')
-             resolution(3) = IO_intValue(line,posGeom,i+1)
-         end select
-       enddo
-   end select
-   if (gotDimension .and. gotHomogenization .and. gotResolution) exit
- enddo
- 100 close(unit)
- 
- if(mod(resolution(1),2)/=0 .or. mod(resolution(2),2)/=0 .or. mod(resolution(3),2)/=0)  call IO_error(103)
- 
- print '(a,/,i4,i4,i4)','resolution a b c:', resolution
- print '(a,/,f6.1,f6.1,f6.1)','dimension x y z:', geomdimension
- print '(a,i4)','homogenization: ',homog
- 
- allocate (defgrad   (resolution(1),resolution(2),resolution(3),3,3)); defgrad    = 0.0_pReal
- allocate (defgradold(resolution(1),resolution(2),resolution(3),3,3)); defgradold = 0.0_pReal
- allocate (coordinates(3,resolution(1),resolution(2),resolution(3))); coordinates = 0.0_pReal
- 
- wgt = 1.0_pReal/real(resolution(1)*resolution(2)*resolution(3), pReal)
- defgradAim = math_I3
- defgradAimOld = math_I3
- defgrad_av = math_I3
- 
-! Initialization of CPFEM_general (= constitutive law) and of deformation gradient field
- call CPFEM_initAll(temperature,1_pInt,1_pInt)
- ielem = 0_pInt
- c066 = 0.0_pReal 
- do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)
-   defgradold(i,j,k,:,:) = math_I3                    !no deformation at the beginning
-   defgrad(i,j,k,:,:) = math_I3 
-   ielem = ielem +1 
-   coordinates(1:3,i,j,k) = mesh_ipCenterOfGravity(1:3,1,ielem)  ! set to initial coordinates (SHOULD BE UPDATED TO CURRENT POSITION IN FUTURE REVISIONS!!!)
-   call CPFEM_general(2,coordinates(1:3,i,j,k),math_I3,math_I3,temperature,0.0_pReal,ielem,1_pInt,cstress,dsde,pstress,dPdF)
-   c066 = c066 + dsde
- enddo; enddo; enddo
- c066 = c066 * wgt
- c0 = math_mandel66to3333(c066)
- call math_invert(6, c066, s066,i, errmatinv)
- if(errmatinv) call IO_error(800)                     !Matrix inversion error
- s0 = math_mandel66to3333(s066)
- 
- if(memory_efficient) then ! allocate just single fourth order tensor
-   allocate (gamma_hat(1,1,1,3,3,3,3)); gamma_hat = 0.0_pReal
- else                      ! precalculation of gamma_hat field
-   allocate (gamma_hat(resolution(1)/2+1,resolution(2),resolution(3),3,3,3,3)); gamma_hat = 0.0_pReal
-   do k = 1, resolution(3)
-     k_s(3) = k-1
-     if(k > resolution(3)/2+1) k_s(3) = k_s(3)-resolution(3)
-     do j = 1, resolution(2)
-       k_s(2) = j-1
-       if(j > resolution(2)/2+1) k_s(2) = k_s(2)-resolution(2)     
-       do i = 1, resolution(1)/2+1
-         k_s(1) = i-1
-         xi(3) = 0.0_pReal     !for the 2D case
-         if(resolution(3) > 1) xi(3) = real(k_s(3), pReal)/geomdimension(3) !3D case
-                               xi(2) = real(k_s(2), pReal)/geomdimension(2)
-                               xi(1) = real(k_s(1), pReal)/geomdimension(1)
-         if (any(xi /= 0.0_pReal)) then     
-           do l = 1,3; do m = 1,3
-             xinormdyad(l,m) = xi(l)*xi(m)/sum(xi**2)
-           enddo; enddo
-           temp33_Real = math_inv3x3(math_mul3333xx33(c0, xinormdyad)) 
-         else
-           xinormdyad  = 0.0_pReal
-           temp33_Real = 0.0_pReal
-         endif 
-         do l=1,3; do m=1,3; do n=1,3; do p=1,3
-           gamma_hat(i,j,k, l,m,n,p) = - 0.25*(temp33_Real(l,n)+temp33_Real(n,l)) *&
-                                              (xinormdyad(m,p)+xinormdyad(p,m))
-         enddo; enddo; enddo; enddo         
-   enddo; enddo; enddo
- endif
- 
-! calculate xi for the calculation of divergence in Fourier space (central frequency)
- xi_central(3) = 0.0_pReal !2D case
- if(resolution(3) > 1) xi_central(3) = real(resolution(3)/2, pReal)/geomdimension(3) !3D case
-                       xi_central(2) = real(resolution(2)/2, pReal)/geomdimension(2)
-                       xi_central(1) = real(resolution(1)/2, pReal)/geomdimension(1)
- 
- allocate (workfft(resolution(1)+2,resolution(2),resolution(3),3,3)); workfft = 0.0_pReal
-
-! Initialization of fftw (see manual on fftw.org for more details) 
- call sfftw_init_threads(ierr)
- if(ierr == 0) call IO_error(104,ierr)
- call sfftw_plan_with_nthreads(mpieNumThreadsInt) 
- call sfftw_plan_many_dft_r2c(plan_fft(1),3,(/resolution(1),resolution(2),resolution(3)/),9,&
-   workfft,(/resolution(1)  +2,resolution(2),resolution(3)/),1,(resolution(1)  +2)*resolution(2)*resolution(3),&
-   workfft,(/resolution(1)/2+1,resolution(2),resolution(3)/),1,(resolution(1)/2+1)*resolution(2)*resolution(3),FFTW_PATIENT)   
- call sfftw_plan_many_dft_c2r(plan_fft(2),3,(/resolution(1),resolution(2),resolution(3)/),9,&
-   workfft,(/resolution(1)/2+1,resolution(2),resolution(3)/),1,(resolution(1)/2+1)*resolution(2)*resolution(3),&
-   workfft,(/resolution(1)  +2,resolution(2),resolution(3)/),1,(resolution(1)  +2)*resolution(2)*resolution(3),FFTW_PATIENT)
-
-! write header of output file
- open(538,file=trim(getSolverWorkingDirectoryName())//trim(getSolverJobName())&
-                                                    //'.spectralOut',form='UNFORMATTED')       
- write(538), 'load',trim(getLoadcaseName())
- write(538), 'workingdir',trim(getSolverWorkingDirectoryName())
- write(538), 'geometry',trim(getSolverJobName())//InputFileExtension
- write(538), 'resolution',resolution
- write(538), 'dimension',geomdimension
- write(538), 'materialpoint_sizeResults', materialpoint_sizeResults
- write(538), 'increments', sum(bc_steps)
- write(538), 'eoh'
- write(538)  materialpoint_results(:,1,:) 
- write(538)  materialpoint_results(:,1,:) !to be conform with t16 Marc format
-! Initialization done
-
-!*************************************************************
-!Loop over loadcases defined in the loadcase file
- do loadcase = 1, N_Loadcases
-!*************************************************************
-
-   timeinc = bc_timeIncrement(loadcase)/bc_steps(loadcase)
-   guessmode = 0.0_pReal                                   ! change of load case, homogeneous guess for the first step
-  
-   mask_defgrad =  merge(ones,zeroes,bc_mask(:,:,1,loadcase))
-   mask_stress =  merge(ones,zeroes,bc_mask(:,:,2,loadcase))
-   damper = ones/10
-!*************************************************************
-! loop oper steps defined in input file for current loadcase
-   do steps = 1, bc_steps(loadcase)
-!*************************************************************
-     temp33_Real = defgradAim
-     defgradAim = defgradAim &                        ! update macroscopic displacement gradient (defgrad BC)
-                  + guessmode * mask_stress * (defgradAim - defgradAimOld) &
-                  + math_mul33x33(bc_velocityGrad(:,:,loadcase), defgradAim)*timeinc
-     defgradAimOld = temp33_Real
-     
-     do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)
-       temp33_Real = defgrad(i,j,k,:,:)
-       defgrad(i,j,k,:,:) = defgrad(i,j,k,:,:)&         ! old fluctuations as guess for new step, no fluctuations for new loadcase
-                          + guessmode * (defgrad(i,j,k,:,:) - defgradold(i,j,k,:,:))&                                           
-                          + (1.0_pReal-guessmode) * math_mul33x33(bc_velocityGrad(:,:,loadcase),defgradold(i,j,k,:,:))*timeinc
-       defgradold(i,j,k,:,:) = temp33_Real                                                                  
-     enddo; enddo; enddo
-
-     guessmode = 1.0_pReal                              ! keep guessing along former trajectory during same loadcase
-     if(all(bc_mask(:,:,1,loadcase))) then
-       calcmode = 1_pInt                                ! if no stress BC is given (calmode 0 is not needed)
-     else
-       calcmode = 0_pInt                                ! start calculation of BC fulfillment
-     endif
-     CPFEM_mode = 1_pInt                                ! winding forward
-     iter = 0_pInt
-     err_div= 2_pReal * err_div_tol                     ! go into loop 
-     defgradAimCorr = 0.0_pReal                         ! reset damping calculation
-     damper = damper * 0.9_pReal
-    
-!*************************************************************
-! convergence loop
-     do while(iter < itmax .and. &     
-             (err_div > err_div_tol .or. &
-              err_stress > err_stress_tol .or. &
-              err_defgrad > err_defgrad_tol))    
-       iter = iter + 1_pInt
-       print*, ' '
-       print '(3(A,I5.5,tr2))', ' Loadcase = ',loadcase, ' Step = ',steps,'Iteration = ',iter
-       cstress_av = 0.0_pReal
-       workfft = 0.0_pReal !needed because of the padding for FFTW
-!*************************************************************
-       
-! adjust defgrad to fulfill BCs 
-       select case (calcmode)       
-       case (0)                                                                      
-         print *, 'Update Stress Field (constitutive evaluation P(F))'  
-         ielem = 0_pInt
-         do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)
-           ielem = ielem + 1
-           call CPFEM_general(3, coordinates(1:3,i,j,k),defgradold(i,j,k,:,:), defgrad(i,j,k,:,:),&
-                              temperature,timeinc,ielem,1_pInt,&
-                              cstress,dsde, pstress, dPdF)
-         enddo; enddo; enddo
-         
-         ielem = 0_pInt       
-         do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)
-           ielem = ielem + 1_pInt
-           call CPFEM_general(CPFEM_mode,&                                  ! first element in first iteration retains CPFEM_mode 1, 
-                              coordinates(1:3,i,j,k),
-                              defgradold(i,j,k,:,:), defgrad(i,j,k,:,:),&   ! others get 2 (saves winding forward effort)
-                              temperature,timeinc,ielem,1_pInt,&
-                              cstress,dsde, pstress, dPdF)
-           CPFEM_mode = 2_pInt
-           workfft(i,j,k,:,:) = pstress
-           cstress_av = cstress_av + math_mandel6to33(cstress)          
-         enddo; enddo; enddo
-         
-         cstress_av = cstress_av * wgt
-         do m = 1,3; do n = 1,3
-           pstress_av(m,n) = sum(workfft(1:resolution(1),:,:,m,n)) * wgt   
-           defgrad_av(m,n) = sum(defgrad(:,:,:,m,n)) * wgt
-         enddo; enddo
-
-         err_stress = maxval(abs(mask_stress * (pstress_av - bc_stress(:,:,loadcase))))
-         err_stress_tol = maxval(abs(pstress_av))*err_stress_tolrel                               
-         
-         print*, 'Correcting deformation gradient to fullfill BCs'
-         defgradAimCorrPrev = defgradAimCorr
-         defgradAimCorr     = -mask_stress * math_mul3333xx33(s0, (mask_stress*(pstress_av - bc_stress(:,:,loadcase))))
-
-         do m=1,3; do n =1,3                                        ! calculate damper (correction is far to strong)
-           if ( sign(1.0_pReal,defgradAimCorr(m,n))/=sign(1.0_pReal,defgradAimCorrPrev(m,n))) then
-             damper(m,n) = max(0.01_pReal,damper(m,n)*0.8)
-           else
-             damper(m,n) = min(1.0_pReal,damper(m,n) *1.2)
-           endif
-         enddo; enddo
-         defgradAimCorr = mask_Stress*(damper * defgradAimCorr)
-         defgradAim = defgradAim + defgradAimCorr                                                                  
-
-         do m = 1,3; do n = 1,3                        
-           defgrad(:,:,:,m,n) = defgrad(:,:,:,m,n) + (defgradAim(m,n) - defgrad_av(m,n)) !anticipated target minus current state
-         enddo; enddo
-         err_div = 2 * err_div_tol 
-         err_defgrad = maxval(abs(mask_defgrad * (defgrad_av - defgradAim)))         
-         print '(a,/,3(3(f12.7,x)/))', ' Deformation Gradient:',math_transpose3x3(defgrad_av)                           
-         print '(a,/,3(3(f10.4,x)/))', ' Cauchy Stress / MPa: '   ,math_transpose3x3(cstress_av)/1.e6        
-         print '(2(a,E8.2))', ' error stress:               ',err_stress, '  Tol. = ', err_stress_tol 
-         print '(2(a,E8.2))', ' error deformation gradient: ',err_defgrad,'  Tol. = ', err_defgrad_tol*0.8  
-         if(err_stress < err_stress_tol*0.8) then 
-           calcmode = 1_pInt
-         endif
-             
-! Using the spectral method to calculate the change of deformation gradient, check divergence of stress field in fourier space        
-       case (1)
-         print *, 'Update Stress Field (constitutive evaluation P(F))'
-         ielem = 0_pInt
-         do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)
-           ielem = ielem + 1_pInt
-           call CPFEM_general(3, coordinates(1:3,i,j,k),defgradold(i,j,k,:,:), defgrad(i,j,k,:,:),&
-                              temperature,timeinc,ielem,1_pInt,&
-                              cstress,dsde, pstress, dPdF)
-         enddo; enddo; enddo
-         ielem = 0_pInt                 
-         do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)
-           ielem = ielem + 1_pInt
-           call CPFEM_general(CPFEM_mode,&                                  ! first element in first iteration retains CPFEM_mode 1,
-                              coordinates(1:3,i,j,k),
-                              defgradold(i,j,k,:,:), defgrad(i,j,k,:,:),&
-                              temperature,timeinc,ielem,1_pInt,&
-                              cstress,dsde, pstress, dPdF)
-           CPFEM_mode = 2_pInt
-           workfft(i,j,k,:,:) = pstress 
-           cstress_av = cstress_av + math_mandel6to33(cstress)          
-         enddo; enddo; enddo       
-         cstress_av = cstress_av * wgt
-         do m = 1,3; do n = 1,3
-           pstress_av(m,n) = sum(workfft(1:resolution(1),:,:,m,n))*wgt
-         enddo; enddo
-         
-         print *, 'Calculating equilibrium using spectral method'
-         err_div = 0.0_pReal; sigma0 = 0.0_pReal
-         call sfftw_execute_dft_r2c(plan_fft(1),workfft,workfft)       ! FFT of pstress
-         do m = 1,3 ! L infinity Norm of stress tensor 
-           sigma0 = max(sigma0, sum(abs(workfft(1,1,1,m,:) + (workfft(2,1,1,m,:))*img)))     
-         enddo
-         err_div = (maxval(abs(math_mul33x3_complex(workfft(resolution(1)+1,resolution(2)/2+1,resolution(3)/2+1,:,:)+& ! L infinity Norm of div(stress)
-                                                    workfft(resolution(1)+2,resolution(2)/2+1,resolution(3)/2+1,:,:)*img,xi_central))))
-         err_div = err_div/sigma0     !weighting of error
-
-         if(memory_efficient) then     ! memory saving version, in-time calculation of gamma_hat
-         do k = 1, resolution(3)
-           k_s(3) = k-1
-           if(k > resolution(3)/2+1) k_s(3) = k_s(3)-resolution(3)
-           do j = 1, resolution(2)
-             k_s(2) = j-1
-             if(j > resolution(2)/2+1) k_s(2) = k_s(2)-resolution(2)
-             do i = 1, resolution(1)/2+1
-               k_s(1) = i-1
-               xi(3) = 0.0_pReal     !for the 2D case
-               if(resolution(3) > 1) xi(3) = real(k_s(3), pReal)/geomdimension(3) !3D case
-                                     xi(2) = real(k_s(2), pReal)/geomdimension(2)
-                                     xi(1) = real(k_s(1), pReal)/geomdimension(1)                                 
-               if (any(xi(:) /= 0.0_pReal)) then     
-                 do l = 1,3; do m = 1,3
-                    xinormdyad(l,m) = xi(l)*xi(m)/sum(xi**2)
-                 enddo; enddo
-                 temp33_Real = math_inv3x3(math_mul3333xx33(c0, xinormdyad)) 
-               else
-                 xinormdyad = 0.0_pReal
-                 temp33_Real = 0.0_pReal
-               endif 
-               do l=1,3; do m=1,3; do n=1,3; do p=1,3
-                gamma_hat(1,1,1, l,m,n,p) = - 0.25_pReal*(temp33_Real(l,n)+temp33_Real(n,l))*&
-                                                         (xinormdyad(m,p) +xinormdyad(p,m))
-               enddo; enddo; enddo; enddo   
-               do m = 1,3; do n = 1,3
-                 temp33_Complex(m,n) = sum(gamma_hat(1,1,1,m,n,:,:) *(workfft(i*2-1,j,k,:,:)&                 
-                                                                     +workfft(i*2  ,j,k,:,:)*img))
-               enddo; enddo
-               workfft(i*2-1,j,k,:,:) = real (temp33_Complex) 
-               workfft(i*2  ,j,k,:,:) = aimag(temp33_Complex)
-           enddo; enddo; enddo
-         else                         !use precalculated gamma-operator
-         do k = 1, resolution(3); do j = 1, resolution(2); do i = 1, resolution(1)/2+1
-           do m = 1,3; do n = 1,3
-             temp33_Complex(m,n) = sum(gamma_hat(i,j,k, m,n,:,:) *(workfft(i*2-1,j,k,:,:)&                 
-                                                                 + workfft(i*2  ,j,k,:,:)*img))
-           enddo; enddo
-           workfft(i*2-1,j,k,:,:) = real (temp33_Complex) 
-           workfft(i*2  ,j,k,:,:) = aimag(temp33_Complex) 
-          enddo; enddo; enddo
-         endif
-         
-         workfft(1,1,1,:,:) = defgrad_av - math_I3 !zero frequency (real part)
-         workfft(2,1,1,:,:) = 0.0_pReal            !zero frequency (imaginary part)
-         
-         call sfftw_execute_dft_c2r(plan_fft(2),workfft,workfft)
-         defgrad = defgrad + workfft(1:resolution(1),:,:,:,:)*wgt
-         do m = 1,3; do n = 1,3
-           defgrad_av(m,n) = sum(defgrad(:,:,:,m,n))*wgt
-           defgrad(:,:,:,m,n) = defgrad(:,:,:,m,n) + (defgradAim(m,n) - defgrad_av(m,n)) !anticipated target minus current state
-         enddo; enddo
-         
-         err_stress = maxval(abs(mask_stress * (pstress_av - bc_stress(:,:,loadcase))))
-         err_stress_tol = maxval(abs(pstress_av))*err_stress_tolrel                             !accecpt relativ error specified
-         err_defgrad = maxval(abs(mask_defgrad * (defgrad_av - defgradAim)))  
-         
-         print '(2(a,E8.2))', ' error divergence:           ',err_div,    '  Tol. = ', err_div_tol
-         print '(2(a,E8.2))', ' error stress:               ',err_stress, '  Tol. = ', err_stress_tol 
-         print '(2(a,E8.2))', ' error deformation gradient: ',err_defgrad,'  Tol. = ', err_defgrad_tol 
-
-         if((err_stress > err_stress_tol .or. err_defgrad > err_defgrad_tol) .and. err_div < err_div_tol) then  ! change to calculation of BCs, reset damper etc.
-           calcmode = 0_pInt
-           defgradAimCorr = 0.0_pReal
-           damper = damper * 0.9_pReal
-         endif     
-       end select 
-     enddo    ! end looping when convergency is achieved 
-     
-     write(538)  materialpoint_results(:,1,:) !write to output file
-     
-     print '(a,x,f12.7)'         , ' Determinant of Deformation Aim: ', math_det3x3(defgradAim)
-     print '(a,/,3(3(f12.7,x)/))', ' Deformation Aim:     ',math_transpose3x3(defgradAim)
-     print '(a,/,3(3(f12.7,x)/))', ' Deformation Gradient:',math_transpose3x3(defgrad_av) 
-     print '(a,/,3(3(f10.4,x)/))', ' Cauchy Stress / MPa: ',math_transpose3x3(cstress_av)/1.e6
-     print '(A)', '************************************************************'
-   enddo  ! end looping over steps in current loadcase
- enddo    ! end looping over loadcases
- close(538)
- call sfftw_destroy_plan(plan_fft(1)); call sfftw_destroy_plan(plan_fft(2))
-    
-end program DAMASK_spectral
-
-!********************************************************************
-! quit subroutine to satisfy IO_error
-!
-!********************************************************************
-subroutine quit(id)
- use prec
- implicit none
-
- integer(pInt) id
-
- stop
-end subroutine
diff --git a/code/makefile b/code/makefile
index 645da2b3f..8b0340b60 100644
--- a/code/makefile
+++ b/code/makefile
@@ -25,19 +25,17 @@
 ########################################################################################
 # OPTIONS = standard (alternative): meaning
 #-------------------------------------------------------------
-# PRECISION = double (single): floating point precision
-# F90 = ifort (gfortran): compiler, choose Intel or GNU
-# PORTABLE = TRUE (FALSE): decision, if executable is optimized for the machine on which it was built.
-# OPTIMIZATION = DEFENSIVE (OFF,AGGRESSIVE,ULTRA): Optimization mode: O2, O0, O3 + further options for most files, 03 + further options for all files
-# OPENMP = TRUE (FALSE): OpenMP multiprocessor support
-# FFTWROOT = pathinfo:FFTW (will be adjusted by setup_code.py)
-# ACMLROOT = pathinfo:ACML (will be adjusted by setup_code.py)
-# ACMLPATH =$(ACMLROOT)/"compilerdir"/lib (...) Path to ACML, choose according to your system
-# ACMLPATH =$(ACMLROOT/"compilerdir"_mp/lib (...) Path to ACML with multicore support, choose according to your system
-# "compilerdir" is "intel64" for ifort
-# PREFIX: specify an arbitrary prefix
-# SUFFIX: specify an arbitrary suffix
+# F90          = ifort (gfortran): compiler, choose Intel or GNU
 # COMPILERNAME = overwrite name of Compiler, e.g. using mpich-g90 instead of ifort
+# PORTABLE     = TRUE (FALSE): decision, if executable is optimized for the machine on which it was built.
+# OPTIMIZATION = DEFENSIVE (OFF,AGGRESSIVE,ULTRA): Optimization mode: O2, O0, O3 + further options for most files, O3 + further options for all files
+# OPENMP       = TRUE (FALSE): OpenMP multiprocessor support
+# FFTWROOT     = pathinfo:FFTW   (will be adjusted by setup_code.py - required in pathinfo)
+# IKMLROOT     = pathinfo:IKML   (will be adjusted by setup_code.py if present in pathinfo)
+# ACMLROOT     = pathinfo:ACML   (will be adjusted by setup_code.py if present in pathinfo)
+# LAPACKROOT   = pathinfo:LAPACK (will be adjusted by setup_code.py if present in pathinfo)
+# PREFIX       = arbitrary prefix
+# SUFFIX       = arbitrary suffix
 ########################################################################################
 # Here are some useful debugging switches. Switch on by uncommenting the #SUFFIX line at the end of this section:
 # information on http://software.intel.com/en-us/articles/determining-root-cause-of-sigsegv-or-sigbus-errors/
@@ -50,7 +48,7 @@ DEBUG2 =-check arg_temp_created
 #check from time to time
 DEBUG3 =-fp-stack-check -g -traceback -gen-interfaces -warn interfaces
 
-#should not be done for OpenMP, but set "ulimit -s unlimited" on shell. Problably it helps also to unlimit other limits
+#should not be done for OpenMP, but set "ulimit -s unlimited" on shell. Probably it helps also to unlimit other limits
 DEBUG4 =-heap-arrays
 
 #checks for standard
@@ -96,22 +94,16 @@ ifeq  "$(PORTABLE)" "FALSE"
 PORTABLE_SWITCH = -msse3
 endif
 
-ifeq "$(PRECISION)" "single"
-FFTWPREC = f
-else
-FFTWPREC =
-endif
-
 
 # settings for multicore support
 ifeq "$(OPENMP)" "ON"
 OPENMP_FLAG_ifort = -openmp -openmp-report0 -parallel
 OPENMP_FLAG_gfortran = -fopenmp
 ACML_ARCH =_mp
-LIBRARIES += -lfftw3$(FFTWPREC)_threads -lpthread
+LIBRARIES += -lfftw3_threads -lpthread
 endif
 
-LIBRARIES += -lfftw3$(FFTWPREC)
+LIBRARIES += -lfftw3
 LIB_DIRS += -L$(FFTWROOT)/lib
 
 ifdef IKMLROOT
@@ -144,31 +136,31 @@ COMPILE         = $(OPENMP_FLAG_$(F90)) $(COMPILE_OPTIONS_$(F90)) $(OPTIMIZATION
 COMPILE_MAXOPTI = $(OPENMP_FLAG_$(F90)) $(COMPILE_OPTIONS_$(F90)) $(OPTIMIZATION_$(MAXOPTI)_$(F90)) -c
 
 
-ifeq "$(PRECISION)" "single"
-DAMASK_spectral_single.exe: DAMASK_spectral_single.o CPFEM.a
-	$(PREFIX)	$(COMPILERNAME) $(OPENMP_FLAG_$(F90)) -o DAMASK_spectral_single.exe DAMASK_spectral_single.o CPFEM.a \
-  constitutive.a advanced.a basics.a $(LIB_DIRS) $(LIBRARIES)
-DAMASK_spectral_single.o: DAMASK_spectral_single.f90 CPFEM.o 
-	$(PREFIX)	$(COMPILERNAME) $(COMPILE_MAXOPTI) DAMASK_spectral_single.f90 $(SUFFIX)
-else
+
 DAMASK_spectral.exe: DAMASK_spectral.o CPFEM.a
 	$(PREFIX)	$(COMPILERNAME) ${OPENMP_FLAG_${F90}} -o DAMASK_spectral.exe DAMASK_spectral.o CPFEM.a \
   constitutive.a advanced.a basics.a $(LIB_DIRS) $(LIBRARIES)
+
 DAMASK_spectral.o: DAMASK_spectral.f90 CPFEM.o 
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE_MAXOPTI) DAMASK_spectral.f90 $(SUFFIX)
-endif
+
+
 
 CPFEM.a: CPFEM.o
 	ar rc CPFEM.a homogenization.o homogenization_RGC.o homogenization_isostrain.o crystallite.o CPFEM.o constitutive.o
 
 CPFEM.o: CPFEM.f90 homogenization.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) CPFEM.f90 $(SUFFIX)
+
 homogenization.o: homogenization.f90 homogenization_isostrain.o homogenization_RGC.o crystallite.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) homogenization.f90 $(SUFFIX)
+
 homogenization_RGC.o: homogenization_RGC.f90 constitutive.a
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) homogenization_RGC.f90 $(SUFFIX)
+
 homogenization_isostrain.o: homogenization_isostrain.f90 basics.a advanced.a
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) homogenization_isostrain.f90 $(SUFFIX)
+
 crystallite.o: crystallite.f90 constitutive.a
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) crystallite.f90 $(SUFFIX)
 
@@ -200,44 +192,40 @@ constitutive_phenopowerlaw.o: constitutive_phenopowerlaw.f90 basics.a advanced.a
 advanced.a: lattice.o
 	ar rc advanced.a FEsolving.o mesh.o material.o lattice.o
 
-
 lattice.o: lattice.f90 material.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) lattice.f90 $(SUFFIX)
+
 material.o: material.f90 mesh.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) material.f90 $(SUFFIX)
+
 mesh.o: mesh.f90 FEsolving.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) mesh.f90 $(SUFFIX)
+
 FEsolving.o: FEsolving.f90 basics.a
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) FEsolving.f90 $(SUFFIX)
 
-ifeq "$(PRECISION)" "single"
-basics.a: debug.o math.o
-	ar rc basics.a debug.o math.o numerics.o IO.o DAMASK_spectral_interface.o prec_single.o
-else
+
+
 basics.a: debug.o math.o
 	ar rc basics.a debug.o math.o numerics.o IO.o DAMASK_spectral_interface.o prec.o
-endif
 
 debug.o: debug.f90 numerics.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) debug.f90 $(SUFFIX)
+
 math.o: math.f90 numerics.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) math.f90 $(SUFFIX)
+
 numerics.o: numerics.f90 IO.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) numerics.f90 $(SUFFIX)
+
 IO.o: IO.f90 DAMASK_spectral_interface.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) IO.f90 $(SUFFIX)
   
-ifeq "$(PRECISION)" "single"
-DAMASK_spectral_interface.o: DAMASK_spectral_interface.f90 prec_single.o
-	$(PREFIX)	$(COMPILERNAME) $(COMPILE) DAMASK_spectral_interface.f90 $(SUFFIX)
-prec_single.o: prec_single.f90
-	$(PREFIX)	$(COMPILERNAME) $(COMPILE) prec_single.f90 $(SUFFIX)
-else
 DAMASK_spectral_interface.o: DAMASK_spectral_interface.f90 prec.o
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) DAMASK_spectral_interface.f90 $(SUFFIX)
+
 prec.o: prec.f90
 	$(PREFIX)	$(COMPILERNAME) $(COMPILE) prec.f90 $(SUFFIX)
-endif
 
 
 tidy: