CUDA Fortran 结构体问题

hyywestwood · 发表于 2021-10-16 15:20:32

最近在学习CUDA Fortran，但相关资料里的示例全部都是对一二维数组进行并行加速的，
但在我的实际应用过程中，派生类（TYPE定义的结构数组）是程序的主要数据结构，所以今天试了一下可否在CUDA Fortran中实现结构体的并行
但出错了，错误截图如下，请问是否是CUDA Fortran原生的不支持结构体？

[Fortran] 纯文本查看 复制代码

    MODULE Compute
    USE Global_variables
    IMPLICIT NONE
    
    CONTAINS
    attributes ( global ) SUBROUTINE Age_add(People_d)
    INTEGER		:: I,N1
    type(Person),       allocatable              :: People_d(:)
    
    I=(BLOCKIDX%X-1)*BLOCKDIM%X+THREADIDX%X
    N1=SIZE(People_d,1)
    
    IF (I>N1) RETURN
    People_d(I)%age = People_d(I)%age + 1
 
    END SUBROUTINE
    END
    
    MODULE Global_variables
    IMPLICIT NONE

    type Person
        integer(kind=4)                        ::     age                    ! 年龄
        integer(kind=4)                        ::     height                 ! 身高
        integer(kind=4)                        ::     weight                 ! 体重
    end type
    END


    program Test
    use cudafor
    use Global_variables
    implicit none
    integer , parameter :: PersonNum = 10000
    type(Person),       allocatable              :: People(:)
    type(Person),device,allocatable              :: People_d(:)
    integer :: i
    
    allocate(People(PersonNum))
    allocate(People_d(PersonNum))
    DO i = 1, PersonNum
        People(i)%age = i
        People(i)%height = i
        People(i)%weight = i
    ENDDO
    
    People_d = People
    CALL Age_add<<<CEILING(REAL(PersonNum)/256),256>>>(People_d)
    People = People_d
    
    write(*,*) People(500)%age
    write(*,*) SIZE(People, 1)
    
    end program Test

li913 · 发表于 2021-10-20 12:18:11

本帖最后由 li913 于 2021-10-20 12:43 编辑

1、去掉第六行的 allocatable;
2、MODULE Global_variables 放在最开始;
3、主程序 use Compute。

[Fortran] 纯文本查看 复制代码

MODULE Global_variables
IMPLICIT NONE
type Person
    integer(kind=4)                        ::     age                    ! 年龄
    integer(kind=4)                        ::     height                 ! 身高
    integer(kind=4)                        ::     weight                 ! 体重
end type
END module

MODULE Compute
USE Global_variables
IMPLICIT NONE
CONTAINS
attributes ( global ) SUBROUTINE Age_add(People_d)
INTEGER                :: I,N1
type(Person) :: People_d(:)
I=(BLOCKIDX%X-1)*BLOCKDIM%X+THREADIDX%X
N1=SIZE(People_d,1)
IF (I>N1) RETURN
People_d(I)%age = People_d(I)%age + 1
END SUBROUTINE
END

program Test
use cudafor
use Global_variables
use Compute
implicit none
integer , parameter :: PersonNum = 10000
type(Person),       allocatable              :: People(:)
type(Person),device,allocatable              :: People_d(:)
integer :: i
allocate(People(PersonNum))
allocate(People_d(PersonNum))
DO i = 1, PersonNum
    People(i)%age = i
    People(i)%height = i
    People(i)%weight = i
ENDDO
People_d = People
CALL Age_add<<<CEILING(REAL(PersonNum)/256),256>>>(People_d)
People = People_d
write(*,*) People(500)%age
write(*,*) SIZE(People, 1)
end program Test

hyywestwood · 发表于 2021-10-20 15:20:20

li913 发表于 2021-10-20 12:18
1、去掉第六行的 allocatable;
2、MODULE Global_variables 放在最开始;
3、主程序 use Compute。

感谢！！解决了我的问题

[并行] CUDA Fortran 结构体问题