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!> Test program for y = alpha * x + betha * y psb_geaxbpy routine
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!! Check the README.md to see all details about the tests.
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!!
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!! Authors: Luca Pepé Sciarria, Staccone Simone (Tor Vergata University)
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!!
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!! psb_geaxpby(alpha, x, beta, y, desc_a, info)
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!!
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!! Type: Synchronous.
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!!
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!! ======================================
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!! | Data type | Precision |
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!! ======================================
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!! | psb_spk_ | Short Precision Real |
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!! | psb_dpk_ | Long Precision Real |
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!! | psb_cpk_ | Short Precision Complex|
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!! | psb_zpk_ | Long Precision Complex |
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!! ======================================
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!! Table 1: Data types
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!!
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!! ROUTINE PARAMETERS
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!!
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!! Input:
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!!
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!! alpha Description: the scalar α.
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!! Scope: global
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!! Type: required
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!! Intent: in
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!! Specified as: a number of the data type indicated in Table 1.
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!!
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!! x Description: the local portion of global dense matrix x.
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!! Scope: local
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!! Type: required
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!! Intent: in
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!! Specified as: a rank one or two array or an object of type psb_T_vect_type
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!! containing numbers of type specified in Table 1. The rank of x must be
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!! the same of y.
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!!
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!! beta Description: the scalar β.
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!! Scope: global
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!! Type: required
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!! Intent: in.
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!! Specified as: a number of the data type indicated in Table 1.
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!!
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!! y Description: the local portion of the global dense matrix y.
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!! Scope: local
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!! Type: required
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!! Intent: inout
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!! Specified as: a rank one or two array or an object of type psb_T_vect_type
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!! containing numbers of the type indicated in Table 1. The rank of y must
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!! be the same of x.
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!!
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!! desc_a Description: contains data structures for communications.
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!! Scope: local
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!! Type: required
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!! Intent: in
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!! Specified as: an object of type psb desc type.
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!!
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!! Output:
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!!
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!! y Description: the local portion of the global dense matrix y.
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!! Scope: local
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!! Type: required
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!! Intent: inout
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!! Specified as: a rank one or two array or an object of type psb_T_vect_type
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!! containing numbers of the type indicated in Table 1. The rank of y must
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!! be the same of x.
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!!
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!! info Description: Error code.
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!! Scope: local
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!! Type: required
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!! Intent: out.
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!! Specified as: An integer value; 0 means no error has been detected.
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!!
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module psb_geaxpby_test
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contains
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!> @brief Function to excecute psb_geaxpby in single precision and
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!! save the results on file
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!!
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subroutine psb_geaxpby_kernel(x_file, y_file, alpha, beta, arr_size, ctxt, ret, output_file_name)
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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) :: x_file, y_file
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real(psb_spk_), intent(in) :: alpha, beta
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integer(psb_ipk_), intent(in) :: arr_size
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type(psb_ctxt_type), intent(in) :: ctxt
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! output parameters
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integer(psb_ipk_), intent(out) :: ret
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character(len=:), allocatable, intent(out) :: output_file_name
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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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integer(psb_ipk_) :: my_rank, np, info, err_act
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! variables outside PSLBALS data structures
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real(psb_spk_), allocatable :: x_global(:), y_global(:)
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integer(psb_ipk_) :: i
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! others
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logical :: exists
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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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! 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(arr_size))
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allocate(y_global(arr_size))
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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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! Allocate descriptor as if it was a block rows distribution
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call psb_cdall(ctxt, desc_a, info,nl=arr_size/np)
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if(info /= psb_success_) then
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write(psb_out_unit,'(A)') "Error allocating desc_a data structure"
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goto 9999
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|
end if
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call psb_cdasb(desc_a, info)
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if(info /= psb_success_) then
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write(psb_out_unit,'(A)') "Error assembling desc_a data structure"
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goto 9999
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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,'(A)') "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,'(A)') "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,'(A)') "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,'(A)') "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 * x + beta * y
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call psb_geaxpby(alpha,x,beta,y,desc_a,info)
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if(info /= psb_success_) then
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write(psb_out_unit,'(A)') "Error in psb_geaxpby 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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! Check if output directory exists
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|
inquire(file='serial/', exist=exists)
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|
if (.not.exists) then
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|
call system('mkdir serial/')
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|
end if
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output_file_name = "serial/"
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|
else
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|
! Check if output directory exists
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|
|
inquire(file='parallel/', exist=exists)
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|
if (.not.exists) then
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|
call system('mkdir parallel/')
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|
end if
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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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|
! gather the result combining all the partial ones
|
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|
call psb_gather(y_global, y, desc_a, info)
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|
if(info /= psb_success_) then
|
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write(psb_out_unit,'(A)') "Error gathering global vector x to write on file"
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|
goto 9999
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|
end if
|
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|
! Save result to output file
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|
if(my_rank == psb_root_) then
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|
call mm_array_write(y_global,"Result vector",info,filename=output_file_name)
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|
end if
|
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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,'(A)') "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,'(A)') "Error in vector y 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,'(A)') "Error in matrix descriptor free routine"
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|
|
goto 9999
|
|
|
end if
|
|
|
|
|
|
if(my_rank == 0) then
|
|
|
deallocate(x_global)
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|
deallocate(y_global)
|
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|
end if
|
|
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|
|
|
return
|
|
|
|
|
|
|
|
|
! Error handling
|
|
|
9999 ret = -1
|
|
|
stop
|
|
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|
|
|
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 |