!> Test program for y = alpha * x + betha * y psb_geaxbpy routine !! Check the README.md to see all details about the tests. !! !! Authors: Luca Pepé Sciarria, Staccone Simone (Tor Vergata University) !! !! psb_geaxpby(alpha, x, beta, y, desc_a, info) !! !! Type: Synchronous. !! !! ====================================== !! | Data type | Precision | !! ====================================== !! | psb_spk_ | Short Precision Real | !! | psb_dpk_ | Long Precision Real | !! | psb_cpk_ | Short Precision Complex| !! | psb_zpk_ | Long Precision Complex | !! ====================================== !! Table 1: Data types !! !! ROUTINE PARAMETERS !! !! Input: !! !! alpha Description: the scalar α. !! Scope: global !! Type: required !! Intent: in !! Specified as: a number of the data type indicated in Table 1. !! !! x Description: the local portion of global dense matrix x. !! Scope: local !! Type: required !! Intent: in !! Specified as: a rank one or two array or an object of type psb_T_vect_type !! containing numbers of type specified in Table 1. The rank of x must be !! the same of y. !! !! beta Description: the scalar β. !! Scope: global !! Type: required !! Intent: in. !! Specified as: a number of the data type indicated in Table 1. !! !! y Description: the local portion of the global dense matrix y. !! Scope: local !! Type: required !! Intent: inout !! Specified as: a rank one or two array or an object of type psb_T_vect_type !! containing numbers of the type indicated in Table 1. The rank of y must !! be the same of x. !! !! desc_a Description: contains data structures for communications. !! Scope: local !! Type: required !! Intent: in !! Specified as: an object of type psb desc type. !! !! Output: !! !! y Description: the local portion of the global dense matrix y. !! Scope: local !! Type: required !! Intent: inout !! Specified as: a rank one or two array or an object of type psb_T_vect_type !! containing numbers of the type indicated in Table 1. The rank of y must !! be the same of x. !! !! info Description: Error code. !! Scope: local !! Type: required !! Intent: out. !! Specified as: An integer value; 0 means no error has been detected. !! module psb_geaxpby_test contains !> @brief Function to excecute psb_geaxpby in single precision and !! save the results on file !! subroutine psb_geaxpby_kernel(x_file, y_file, alpha, beta, arr_size, ctxt, ret, output_file_name) use psb_base_mod use psb_util_mod implicit none ! input parameters character(len = *), intent(in) :: x_file, y_file real(psb_spk_), intent(in) :: alpha, beta integer(psb_ipk_), intent(in) :: arr_size type(psb_ctxt_type), intent(in) :: ctxt ! output parameters integer(psb_ipk_), intent(out) :: ret character(len=:), allocatable, intent(out) :: output_file_name ! vectors type(psb_s_vect_type) :: x, y ! matrix descriptor data structure type(psb_desc_type) :: desc_a ! communication context integer(psb_ipk_) :: my_rank, np, info, err_act ! variables outside PSLBALS data structures real(psb_spk_), allocatable :: x_global(:), y_global(:) integer(psb_ipk_) :: i ! others logical :: exists info = psb_success_ call psb_info(ctxt,my_rank,np) if (my_rank < 0) then ! This should not happen, but just in case call psb_error(ctxt) endif ! Generate random array for b using always the same seed if(my_rank == psb_root_) then allocate(x_global(arr_size)) allocate(y_global(arr_size)) call mm_array_read(x_global,info,filename=x_file) call mm_array_read(y_global,info,filename=y_file) end if ! Allocate descriptor as if it was a block rows distribution call psb_cdall(ctxt, desc_a, info,nl=arr_size/np) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating desc_a data structure" goto 9999 end if call psb_cdasb(desc_a, info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error assembling desc_a data structure" goto 9999 end if call psb_geall(x,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating x data structure" goto 9999 end if ! Populate x class using data from x_global vector call psb_scatter(x_global,x,desc_a,info,root=psb_root_) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in psb_scatter to populate x data structure" goto 9999 end if call psb_geall(y,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating y data structure" goto 9999 end if ! Populate y class using data from y_global vector call psb_scatter(y_global,y,desc_a,info,root=psb_root_) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in psb_scatter to populate y data structure" goto 9999 end if ! y = alpha * x + beta * y call psb_geaxpby(alpha,x,beta,y,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in psb_geaxpby routine" goto 9999 end if ! Make the root process be the one that saves everything on file if(np == 1) then ! Check if output directory exists inquire(file='serial/', exist=exists) if (.not.exists) then call system('mkdir serial/') end if output_file_name = "serial/" else ! Check if output directory exists inquire(file='parallel/', exist=exists) if (.not.exists) then call system('mkdir parallel/') end if output_file_name = "parallel/" end if output_file_name = output_file_name // "sol_" // x_file(9:10) // "_" // y_file(9:10) if(alpha == sone) then output_file_name = output_file_name // "_a1" else if(alpha == -sone) then output_file_name = output_file_name // "_a2" else if(alpha == szero) then output_file_name = output_file_name // "_a3" end if if(beta == sone) then output_file_name = output_file_name // "_b1.mtx" else if(beta == -sone) then output_file_name = output_file_name // "_b2.mtx" else if(beta == szero) then output_file_name = output_file_name // "_b3.mtx" end if ! gather the result combining all the partial ones call psb_gather(y_global, y, desc_a, info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error gathering global vector x to write on file" goto 9999 end if ! Save result to output file if(my_rank == psb_root_) then call mm_array_write(y_global,"Result vector",info,filename=output_file_name) end if ! Deallocate call psb_gefree(x, desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in vector x free routine" goto 9999 end if call psb_gefree(y, desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in vector y free routine" goto 9999 end if call psb_cdfree(desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in matrix descriptor free routine" goto 9999 end if if(my_rank == 0) then deallocate(x_global) deallocate(y_global) end if return ! Error handling 9999 ret = -1 stop end subroutine !> @brief Function to excecute psb_geaxpby in double precision and !! compare the results with the ones on file !! subroutine psb_geaxpby_check(x_file, y_file, alpha, beta, arr_size, ctxt, ret, output_file_name) use psb_base_mod use psb_util_mod implicit none ! input parameters character(len = *), intent(in) :: x_file, y_file real(psb_dpk_), intent(in) :: alpha, beta integer(psb_ipk_), intent(in) :: arr_size type(psb_ctxt_type), intent(in) :: ctxt ! output parameters integer(psb_ipk_), intent(out) :: ret character(len=:), allocatable, intent(out) :: output_file_name ! vectors type(psb_d_vect_type) :: x, y type(psb_s_vect_type) :: y_check ! matrix descriptor data structure type(psb_desc_type) :: desc_a ! communication context integer(psb_ipk_) :: my_rank, np, info, err_act ! variables outside PSLBALS data structures real(psb_dpk_), allocatable :: x_global(:), y_global(:) integer(psb_ipk_) :: i ! others logical :: exists info = psb_success_ call psb_info(ctxt,my_rank,np) if (my_rank < 0) then ! This should not happen, but just in case call psb_error(ctxt) endif ! Generate random array for b using always the same seed if(my_rank == psb_root_) then allocate(x_global(arr_size)) allocate(y_global(arr_size)) call mm_array_read(x_global,info,filename=x_file) call mm_array_read(y_global,info,filename=y_file) end if ! Allocate descriptor as if it was a block rows distribution call psb_cdall(ctxt, desc_a, info,nl=10000/np) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating desc_a data structure" goto 9999 end if call psb_cdasb(desc_a, info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error assembling desc_a data structure" goto 9999 end if call psb_geall(x,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating x data structure" goto 9999 end if ! Populate x class using data from x_global vector call psb_scatter(x_global,x,desc_a,info,root=psb_root_) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in psb_scatter to populate x data structure" goto 9999 end if call psb_geall(y,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating y data structure" goto 9999 end if ! Populate y class using data from y_global vector call psb_scatter(y_global,y,desc_a,info,root=psb_root_) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in psb_scatter to populate y data structure" goto 9999 end if call psb_geall(y_check,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error allocating y_check data structure" goto 9999 end if ! y = alpha * x + beta * y call psb_geaxpby(alpha,x,beta,y,desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in psb_geaxpby routine" goto 9999 end if ! gather the result combining all the partial ones call psb_gather(y_global, y, desc_a, info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error gathering global vector y used for comparison" goto 9999 end if if(my_rank == psb_root_) then ! Make the root process be the one that saves everything on file if(np == 1) then ! Check if output directory exists inquire(file='serial/', exist=exists) if(.not.exists) then write(psb_out_unit,'(A)') "Error in psb_geaxpby_check routine, no single precision result is saved on file" goto 9999 end if output_file_name = "serial/" else ! Check if output directory exists inquire(file='parallel/', exist=exists) if(.not.exists) then write(psb_out_unit,'(A)') "Error in psb_geaxpby_check routine, no single precision result is saved on file" goto 9999 end if output_file_name = "parallel/" end if output_file_name = output_file_name // "sol_" // x_file(9:10) // "_" // y_file(9:10) if(alpha == done) then output_file_name = output_file_name // "_a1" else if(alpha == -done) then output_file_name = output_file_name // "_a2" else if(alpha == dzero) then output_file_name = output_file_name // "_a3" end if if(beta == done) then output_file_name = output_file_name // "_b1.mtx" else if(beta == -done) then output_file_name = output_file_name // "_b2.mtx" else if(beta == dzero) then output_file_name = output_file_name // "_b3.mtx" end if ! Read single precision result from file call mm_array_read(y_check,info,filename=output_file_name) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in mm_array_read for y_check data structure" goto 9999 end if ! 5.96e-08 is 2^-24 (Single precision unit roundoff) ! 1.19e-07 is 2^-23 (Single precision unit interval) do i=1, arr_size !! write(*, *) abs(y_global(i) - y_check%v%v(i)) > 5.96D-08, & !! & y_global(i), y_check%v%v(i), output_file_name if(abs(y_global(i) - y_check%v%v(i)) > 1.19e-07) then ret = -i write(psb_out_unit, '(A,F10.8)') "Y computed in double precision: ", y_global(i) write(psb_out_unit, '(A,F10.8)') "Y read from single precision file: ", y_check%v%v(i) write(psb_out_unit, '(A,F10.8)') "Diff: ", abs(y_global(i) - y_check%v%v(i)) exit end if end do end if ! Deallocate call psb_gefree(x, desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in vector x free routine" goto 9999 end if call psb_gefree(y, desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in vector y free routine" goto 9999 end if call psb_gefree(y_check, desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in vector y_check free routine" goto 9999 end if call psb_cdfree(desc_a,info) if(info /= psb_success_) then write(psb_out_unit,'(A)') "Error in matrix descriptor free routine" goto 9999 end if if(my_rank == 0) then deallocate(x_global) deallocate(y_global) end if ret = 0 return ! Error handling 9999 ret = -1 stop end subroutine !> @brief Function to randomly generate x and y vectors !! and save them on multiple files based on their !! coefficients values. !! subroutine generate_vectors(arr_size) use psb_base_mod use psb_util_mod implicit none integer(psb_ipk_), intent(in) :: arr_size real(psb_dpk_), allocatable :: x(:), y(:) integer(psb_ipk_) :: i, info logical :: exists ! Check if output directory exists inquire(file='vectors/', exist=exists) if (.not.exists) then call system('mkdir vectors/') end if allocate(x(arr_size)) allocate(y(arr_size)) call random_init(repeatable=.true.,image_distinct=.true.) call random_number(x) call random_number(y) ! Write only positive in x_1 call mm_array_write(x,"Positive vector",info,filename="vectors/x1.mtx") call mm_array_write(y,"Positive vector",info,filename="vectors/y1.mtx") ! Write only negative in x_2 do i=1,arr_size x(i) = -x(i) end do do i=1,arr_size y(i) = -y(i) end do call mm_array_write(x,"Negative vector",info,filename="vectors/x2.mtx") call mm_array_write(y,"Negative vector",info,filename="vectors/y2.mtx") ! Since numbers are less than one and always positive, we have to generate negative ones subtractiong 50 do i=1,arr_size x(i) = -x(i) ! Make the values positive again x(i) = x(i) - 0.5 end do do i=1,arr_size y(i) = -y(i) ! Make the values positive again y(i) = y(i) - 0.5 end do ! Write random in x_3 call mm_array_write(x,"Random vector",info,filename="vectors/x3.mtx") call mm_array_write(y,"Random vector",info,filename="vectors/y3.mtx") ! Write zero in x_4 do i=1,arr_size x(i) = 0 end do do i=1,arr_size y(i) = 0 end do call mm_array_write(x,"Null vector",info,filename="vectors/x4.mtx") call mm_array_write(y,"Null vector",info,filename="vectors/y4.mtx") deallocate(x) deallocate(y) end subroutine end module psb_geaxpby_test