!!$ !!$ Parallel Sparse BLAS version 3.0 !!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012 !!$ Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari CNRS-IRIT, Toulouse !!$ !!$ Redistribution and use in source and binary forms, with or without !!$ modification, are permitted provided that the following conditions !!$ are met: !!$ 1. Redistributions of source code must retain the above copyright !!$ notice, this list of conditions and the following disclaimer. !!$ 2. Redistributions in binary form must reproduce the above copyright !!$ notice, this list of conditions, and the following disclaimer in the !!$ documentation and/or other materials provided with the distribution. !!$ 3. 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This is a simple test program to show how to plug a new matrix format ! into the library framework. ! ! program d_matgen use psb_base_mod use psb_util_mod use psb_d_cxx_mat_mod use psb_d_cyy_mat_mod implicit none ! input parameters character(len=20) :: kmethd, ptype character(len=5) :: afmt integer(psb_ipk_) :: idim ! miscellaneous real(psb_dpk_), parameter :: one = 1.d0 real(psb_dpk_) :: t1, t2, tprec ! sparse matrix and preconditioner type(psb_dspmat_type) :: a ! descriptor type(psb_desc_type) :: desc_a ! dense matrices type(psb_d_vect_type) :: b, x ! blacs parameters integer(psb_ipk_) :: ictxt, iam, np ! solver parameters integer(psb_ipk_) :: iter, itmax,itrace, istopc, irst integer(psb_long_int_k_) :: amatsize, precsize, descsize real(psb_dpk_) :: err, eps type(psb_d_cyy_sparse_mat) :: acyy type(psb_d_csr_sparse_mat) :: acsr type(psb_d_cxx_sparse_mat) :: acxx ! other variables integer(psb_ipk_) :: info, err_act character(len=20) :: name,ch_err info=psb_success_ call psb_init(ictxt) call psb_info(ictxt,iam,np) if (iam < 0) then ! This should not happen, but just in case call psb_exit(ictxt) stop endif if(psb_get_errstatus() /= 0) goto 9999 call psb_set_errverbosity(itwo) ! ! get parameters ! call get_parms(ictxt,idim) ! ! allocate and fill in the coefficient matrix, rhs and initial guess ! call psb_barrier(ictxt) t1 = psb_wtime() if (.true.) then call psb_gen_pde3d(ictxt,idim,a,b,x,desc_a,afmt,& & a1,a2,a3,b1,b2,b3,c,g,info,amold=acsr) else if (.false.) then call psb_gen_pde3d(ictxt,idim,a,b,x,desc_a,afmt,& & a1,a2,a3,b1,b2,b3,c,g,info,amold=acxx) else if (.false.) then call psb_gen_pde3d(ictxt,idim,a,b,x,desc_a,afmt,& & a1,a2,a3,b1,b2,b3,c,g,info,amold=acyy) end if call psb_barrier(ictxt) t2 = psb_wtime() - t1 if(info /= psb_success_) then call psb_error(ictxt) end if call psb_exit(ictxt) stop 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error(ictxt) end if stop contains ! ! get iteration parameters from standard input ! subroutine get_parms(ictxt,idim) integer(psb_ipk_) :: ictxt integer(psb_ipk_) :: idim integer(psb_ipk_) :: np, iam integer(psb_ipk_) :: intbuf(10), ip call psb_info(ictxt, iam, np) read(psb_inp_unit,*) idim return end subroutine get_parms ! ! print an error message ! subroutine pr_usage(iout) integer(psb_ipk_) :: iout write(iout,*)'incorrect parameter(s) found' write(iout,*)' usage: pde90 methd prec dim & &[istop itmax itrace]' write(iout,*)' where:' write(iout,*)' methd: cgstab cgs rgmres bicgstabl' write(iout,*)' prec : bjac diag none' write(iout,*)' dim number of points along each axis' write(iout,*)' the size of the resulting linear ' write(iout,*)' system is dim**3' write(iout,*)' istop stopping criterion 1, 2 ' write(iout,*)' itmax maximum number of iterations [500] ' write(iout,*)' itrace <=0 (no tracing, default) or ' write(iout,*)' >= 1 do tracing every itrace' write(iout,*)' iterations ' end subroutine pr_usage ! ! functions parametrizing the differential equation ! function b1(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: b1 real(psb_dpk_), intent(in) :: x,y,z b1=1.d0/sqrt(3.d0) end function b1 function b2(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: b2 real(psb_dpk_), intent(in) :: x,y,z b2=1.d0/sqrt(3.d0) end function b2 function b3(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: b3 real(psb_dpk_), intent(in) :: x,y,z b3=1.d0/sqrt(3.d0) end function b3 function c(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: c real(psb_dpk_), intent(in) :: x,y,z c=0.d0 end function c function a1(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: a1 real(psb_dpk_), intent(in) :: x,y,z a1=1.d0/80 end function a1 function a2(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: a2 real(psb_dpk_), intent(in) :: x,y,z a2=1.d0/80 end function a2 function a3(x,y,z) use psb_base_mod, only : psb_dpk_ real(psb_dpk_) :: a3 real(psb_dpk_), intent(in) :: x,y,z a3=1.d0/80 end function a3 function g(x,y,z) use psb_base_mod, only : psb_dpk_, done real(psb_dpk_) :: g real(psb_dpk_), intent(in) :: x,y,z g = dzero if (x == done) then g = done else if (x == dzero) then g = exp(y**2-z**2) end if end function g end program d_matgen