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294 lines
9.0 KiB
Fortran
294 lines
9.0 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS version 3.1
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!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the PSBLAS group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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program maxA_and_lapl_extremums
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use psb_base_mod
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use psb_util_mod
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use psb_eigen_mod
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implicit none
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! input parameters
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character(len=100) :: mtrx_file, rhs_file
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character(len=40) :: kmethd, ptype
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real (psb_dpk_) :: precisione,sigma
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integer(psb_ipk_) :: dim_H,to_read
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! sparse matrices
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type(psb_dspmat_type) :: a, b, aux_a
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! dense matrices
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real(psb_dpk_), allocatable, target :: aux_b(:,:), d(:)
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real(psb_dpk_), allocatable , save :: x_col_glob(:), r_col_glob(:)
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real(psb_dpk_), pointer :: b_col_glob(:)
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type(psb_d_vect_type) :: b_col, x_col, r_col
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complex(psb_dpk_),allocatable :: eig(:),eigmin(:)
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! communications data structure
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type(psb_desc_type):: desc_a
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integer(psb_ipk_) :: ictxt, iam, np
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! solver paramters
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integer(psb_ipk_) :: iter, itmax, ierr, itrace, ircode, ipart,&
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& methd, istopc, irst, nr
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integer(psb_long_int_k_) :: amatsize, descsize, annz, nbytes
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real(psb_dpk_) :: err, eps,cond
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character(len=5) :: afmt
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character(len=20) :: name
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character(len=2) :: filefmt
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integer(psb_ipk_), parameter :: iunit=12
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integer(psb_ipk_) :: times=0
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integer(psb_ipk_) :: iparm(20)
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! other variables
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integer(psb_ipk_) :: i,info,j,m_problem
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integer(psb_ipk_) :: nnzero
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real(psb_dpk_) :: t1, t2, t3, t4
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real(psb_dpk_) :: lambda, lambda2, norm
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integer(psb_ipk_) :: nrhs, nrow, n_row, dim, nv, ne
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integer(psb_ipk_), allocatable :: ivg(:), ipv(:)
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call psb_init(ictxt)
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call psb_info(ictxt,iam,np)
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if (iam < 0) then
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! This should not happen, but just in case
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call psb_exit(ictxt)
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stop
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endif
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name='power_file'
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if(psb_get_errstatus() /= 0) goto 9999
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info=psb_success_
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call psb_set_errverbosity(2)
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!
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! Hello world
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!
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if (iam == psb_root_) then
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write(*,*) 'This is the ',trim(name),' sample program'
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read(psb_inp_unit,*) to_read
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read(psb_inp_unit,*) mtrx_file
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read(psb_inp_unit,*) filefmt
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read(psb_inp_unit,*) ipart
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read(psb_inp_unit,*) precisione
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read(psb_inp_unit,*) dim_H
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read(psb_inp_unit,*) sigma
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read(psb_inp_unit,*) ptype
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read(psb_inp_unit,*) kmethd
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end if
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call psb_bcast(ictxt,to_read)
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call psb_bcast(ictxt,mtrx_file)
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call psb_bcast(ictxt,filefmt)
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call psb_bcast(ictxt,ipart)
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call psb_bcast(ictxt,precisione)
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call psb_bcast(ictxt,dim_H)
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call psb_bcast(ictxt,sigma)
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call psb_bcast(ictxt,ptype)
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call psb_bcast(ictxt,kmethd)
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rhs_file = 'NONE'
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afmt = 'CSR'
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call psb_barrier(ictxt)
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t1 = psb_wtime()
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! read the input matrix to be processed and (possibly) the rhs
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nrhs = 1
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if (iam==psb_root_) then
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select case(psb_toupper(filefmt))
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case('MM')
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! For Matrix Market we have an input file for the matrix
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! and an (optional) second file for the RHS.
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call mm_mat_read(aux_a,info,iunit=iunit,filename=mtrx_file)
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if (info == psb_success_) then
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if (rhs_file /= 'NONE') then
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call mm_array_read(aux_b,info,iunit=iunit,filename=rhs_file)
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end if
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end if
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case ('HB')
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! For Harwell-Boeing we have a single file which may or may not
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! contain an RHS.
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call hb_read(aux_a,info,iunit=iunit,b=aux_b,filename=mtrx_file)
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case ('AD')
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call special_adj_read(aux_a,mtrx_file,to_read,iunit,info)
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case default
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info = -1
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write(psb_err_unit,*) 'Wrong choice for fileformat ', filefmt
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end select
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if (info /= psb_success_) then
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write(psb_err_unit,*) 'Error while reading input matrix '
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call psb_abort(ictxt)
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end if
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m_problem = aux_a%get_nrows()
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call psb_bcast(ictxt,m_problem)
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! At this point aux_b may still be unallocated
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if (psb_size(aux_b,dim=1)==m_problem) then
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! if any rhs were present, broadcast the first one
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write(psb_err_unit,'("Ok, got an rhs ")')
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b_col_glob =>aux_b(:,1)
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else
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call psb_realloc(m_problem,1,aux_b,ircode)
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if (ircode /= 0) then
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call psb_errpush(psb_err_alloc_dealloc_,name)
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goto 9999
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endif
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b_col_glob => aux_b(:,1)
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do i=1, m_problem
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b_col_glob(i) = 1.d0
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enddo
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endif
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call psb_bcast(ictxt,b_col_glob(1:m_problem))
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else
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call psb_bcast(ictxt,m_problem)
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call psb_realloc(m_problem,1,aux_b,ircode)
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if (ircode /= 0) then
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call psb_errpush(psb_err_alloc_dealloc_,name)
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goto 9999
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endif
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b_col_glob =>aux_b(:,1)
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call psb_bcast(ictxt,b_col_glob(1:m_problem))
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end if
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! switch over different partition types
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if (ipart == 0) then
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call psb_barrier(ictxt)
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allocate(ivg(m_problem),ipv(np))
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do i=1,m_problem
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call part_block(i,m_problem,np,ipv,nv)
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ivg(i) = ipv(1)
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enddo
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call psb_matdist(aux_a, a,ictxt, &
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& desc_a,b_col_glob,b_col,info,fmt=afmt,v=ivg)
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else if (ipart == 2) then
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if (iam==psb_root_) then
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call build_mtpart(aux_a,np)
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endif
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call psb_barrier(ictxt)
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call distr_mtpart(psb_root_,ictxt)
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call getv_mtpart(ivg)
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call psb_matdist(aux_a, a, ictxt, &
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& desc_a,b_col_glob,b_col,info,fmt=afmt,v=ivg)
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else
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call psb_matdist(aux_a, a, ictxt, &
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& desc_a,b_col_glob,b_col,info,fmt=afmt,parts=part_block)
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end if
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call psb_barrier(ictxt)
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call psb_d_power_vect(a,x_col,lambda,precisione,iter,500,desc_a,info)
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t2 = psb_wtime() - t1
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t1 = psb_wtime()
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call psb_d_laplacian(a,b)
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call psb_d_arnoldi(b,dim_H,eig,desc_a,ictxt,info)
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t3 = psb_wtime()-t1
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t1 = psb_wtime()
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call psb_d_shift_invert(b,dim_H,sigma,eigmin,ptype,kmethd,desc_a,ictxt,iam,info)
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call psb_barrier(ictxt)
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t4 = psb_wtime() - t1
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t1=t2+t3+t4
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if (iam==psb_root_) then
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open (15, FILE="plot_data.dat", position = 'append',ACTION="WRITE")
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write (15,'(i20,F20.6,F20.6,F20.6,F20.6,F20.4)')aux_a%get_nzeros(),lambda,real(eig(dim_H)),real(eig(dim_H-1)),&
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&real(eigmin(dim_H-1)),t1
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close(15)
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end if
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call psb_gefree(b_col, desc_a,info)
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call psb_gefree(x_col, desc_a,info)
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call psb_spfree(a, desc_a,info)
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call psb_spfree(b, desc_a,info)
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call psb_spfree(aux_a, desc_a,info)
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call psb_cdfree(desc_a,info)
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9999 continue
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if(info /= 0) then
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call psb_error(ictxt)
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end if
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call psb_exit(ictxt)
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stop
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contains
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subroutine special_adj_read (a,filename,nnzero,iunit,info)
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use psb_base_mod
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use psb_eigen_mod, psb_protect_name => psb_d_adj_read
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type(psb_dspmat_type), intent (inout) :: a
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character(len=40) , intent(in):: filename
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integer (psb_ipk_),intent(in) :: iunit
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integer (psb_ipk_),intent(out) :: info
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! reads a file containing the coordinate description of an adjacence
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! sparse matrix (values are always 1) and stores it into 'a'
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!
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! on entry :
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! filename : file containing the description of the matrix
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! nnzero : number of elements you want to read
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integer(psb_ipk_) :: i,nnzero,nrows
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type(psb_d_coo_sparse_mat) :: acoo
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open(iunit, FILE=filename, STATUS="OLD", ACTION="READ")
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read(iunit, *) nrows
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call acoo%allocate(nrows,nrows,nnzero)
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do i = 1,nnzero
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read(iunit, *) acoo%ia(i),acoo%ja(i)
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acoo%val(i)=1.0
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end do
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close(UNIT=iunit)
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call acoo%set_nzeros(nnzero)
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call acoo%fix(info)
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call a%mv_from(acoo)
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call a%cscnv(info,type='csr')
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end subroutine special_adj_read
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end program maxA_and_lapl_extremums
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