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295 lines
8.8 KiB
Fortran
295 lines
8.8 KiB
Fortran
!> Test program for y = AX spsb_pmm routine
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!! Check the README.md to see all details about the tests.
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!!
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!! Author: Luca Pepé Sciarria, Staccone Simone (Tor Vergata University)
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module psb_spmm_test
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contains
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subroutine psb_spmm_kernel(mtx_file,x_file, y_file, alpha, beta, ctxt)
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use psb_base_mod
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use psb_util_mod
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implicit none
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! input parameters
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character(len = *), intent(in) :: mtx_file, x_file, y_file
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real(psb_spk_), intent(in) :: alpha, beta
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character(len=:), allocatable :: output_file_name
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! sparse matrices
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type(psb_sspmat_type) :: a
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type(psb_lsspmat_type) :: aux_a
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! vectors
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type(psb_s_vect_type) :: x, y
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! matrix descriptor data structure
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type(psb_desc_type) :: desc_a
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! communication context
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type(psb_ctxt_type), intent(in) :: ctxt
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integer(psb_ipk_) :: my_rank, np, info, err_act
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! matrix parameters
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integer(psb_ipk_) :: rows, cols, nnz
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integer(psb_ipk_) :: nr, nt ! In BLOCK ROWS distributin, the number of rows
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real(psb_spk_), allocatable :: x_global(:), y_global(:)
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integer(psb_ipk_) :: i
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info = psb_success_
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call psb_info(ctxt,my_rank,np)
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if (my_rank < 0) then
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! This should not happen, but just in case
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call psb_error(ctxt)
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endif
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call mm_mat_read(aux_a,info,filename=mtx_file)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error while reading matric ", mtx_file
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goto 9999
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end if
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! part_block it's a macro defined in psb_blockpart_mod to identify BLOCK ROWS distribution
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call psb_matdist(aux_a, a, ctxt,desc_a,info,fmt="COO",parts=part_block)
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rows = aux_a%get_nrows()
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cols = aux_a%get_ncols()
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nnz = aux_a%get_nzeros()
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call psb_bcast(ctxt,rows)
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call psb_bcast(ctxt,cols)
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call psb_bcast(ctxt,nnz)
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! Generate random array for b using always the same seed
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if(my_rank == psb_root_) then
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allocate(x_global(cols))
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allocate(y_global(rows))
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call mm_array_read(x_global,info,filename=x_file)
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call mm_array_read(y_global,info,filename=y_file)
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end if
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call psb_geall(x,desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error allocating x data structure"
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goto 9999
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end if
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! Populate x class using data from x_global vector
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call psb_scatter(x_global,x,desc_a,info,root=psb_root_)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in psb_scatter to populate x data structure"
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goto 9999
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end if
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call psb_geall(y,desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error allocating y data structure"
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goto 9999
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end if
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! Populate y class using data from y_global vector
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call psb_scatter(y_global,y,desc_a,info,root=psb_root_)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in psb_scatter to populate y data structure"
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goto 9999
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end if
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! y = alpha * A * x + beta * y
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call psb_spmm(alpha,a,x,beta,y,desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in psb_spmm routine"
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goto 9999
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end if
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! Make the root process be the one that saves everything on file
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if(np == 1) then
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output_file_name = "serial/"
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else
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output_file_name = "parallel/"
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end if
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output_file_name = output_file_name // "sol_" // x_file(9:10) // "_" // y_file(9:10)
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if(alpha == sone) then
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output_file_name = output_file_name // "_a1"
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else if(alpha == -sone) then
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output_file_name = output_file_name // "_a2"
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else if(alpha == szero) then
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output_file_name = output_file_name // "_a3"
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end if
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if(beta == sone) then
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output_file_name = output_file_name // "_b1.mtx"
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else if(beta == -sone) then
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output_file_name = output_file_name // "_b2.mtx"
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else if(beta == szero) then
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output_file_name = output_file_name // "_b3.mtx"
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end if
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! Save result to output file
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call mm_array_write(y,"Result vector",info,filename=output_file_name)
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! Deallocate
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call psb_gefree(x, desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in vector x free routine"
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goto 9999
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end if
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call psb_gefree(y, desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in vector y free routine"
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goto 9999
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end if
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call psb_spfree(a, desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in matrix A free routine"
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goto 9999
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end if
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call psb_cdfree(desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,*) "Error in matrix descriptor free routine"
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goto 9999
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end if
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if(my_rank == 0) then
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deallocate(x_global)
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deallocate(y_global)
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end if
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return
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! Error handling
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9999 call psb_error(ctxt)
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call psb_error_handler(ctxt,err_act)
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stop
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end subroutine
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!> @brief Function to randomly generate x and y vectors
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!! and save them on multiple files based on their
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!! coefficients values.
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!!
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subroutine generate_vectors(rows, cols)
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use psb_base_mod
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use psb_util_mod
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implicit none
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integer(psb_ipk_), intent(in) :: rows, cols
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real(psb_spk_), allocatable :: x(:), y(:)
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integer(psb_ipk_) :: i, info
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allocate(x(rows))
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allocate(y(cols))
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call random_init(repeatable=.true.,image_distinct=.true.)
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call random_number(x)
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call random_number(y)
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! Write only positive in x_1
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call mm_array_write(x,"Positive vector",info,filename="vectors/x1.mtx")
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call mm_array_write(y,"Positive vector",info,filename="vectors/y1.mtx")
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! Write only negative in x_2
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do i=1,rows
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x(i) = -x(i)
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end do
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do i=1,cols
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y(i) = -y(i)
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end do
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call mm_array_write(x,"Negative vector",info,filename="vectors/x2.mtx")
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call mm_array_write(y,"Negative vector",info,filename="vectors/y2.mtx")
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! Since numbers are less than one and always positive, we have to generate negative ones subtractiong 50
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do i=1,rows
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x(i) = -x(i) ! Make the values positive again
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x(i) = x(i) - 0.5
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end do
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do i=1,cols
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y(i) = -y(i) ! Make the values positive again
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y(i) = y(i) - 0.5
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end do
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! Write random in x_3
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call mm_array_write(x,"Random vector",info,filename="vectors/x3.mtx")
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call mm_array_write(y,"Random vector",info,filename="vectors/y3.mtx")
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! Write zero in x_4
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do i=1,rows
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x(i) = 0
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end do
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do i=1,cols
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y(i) = 0
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end do
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call mm_array_write(x,"Null vector",info,filename="vectors/x4.mtx")
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call mm_array_write(y,"Null vector",info,filename="vectors/y4.mtx")
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deallocate(x)
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deallocate(y)
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end subroutine
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subroutine read_matrix_market_size(filename, rows, cols)
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implicit none
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character(len=*), intent(in) :: filename
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integer, intent(out) :: rows, cols
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integer :: ret, nnz
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character(len=256) :: line
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logical :: found
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integer :: unit
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! Open the file
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open(newunit=unit, file=filename, status='old', action='read', iostat=ret)
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if (ret /= 0) then
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print *, 'Error opening file: ', filename
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stop
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end if
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found = .false.
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! Skip comment lines (starting with %)
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do
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read(unit, '(A)', iostat=ret) line
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if (ret /= 0) exit
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if (line(1:1) /= '%') then
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read(line, *) rows, cols, nnz
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found = .true.
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exit
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end if
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end do
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if (.not. found) then
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print *, 'Error: header not found in Matrix Market file.'
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stop
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end if
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close(unit)
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end subroutine read_matrix_market_size
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end module psb_spmm_test
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