Transfers data from host- to device-buffer, asynchronously.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(dbcsr_data_obj), | intent(inout) | :: | area |
SUBROUTINE dbcsr_data_host2dev(area)
!! Transfers data from host- to device-buffer, asynchronously.
TYPE(dbcsr_data_obj), INTENT(INOUT) :: area
COMPLEX(KIND=real_4), DIMENSION(:), POINTER :: c_sp
COMPLEX(KIND=real_8), DIMENSION(:), POINTER :: c_dp
INTEGER(KIND=int_4), DIMENSION(:), POINTER :: i4
INTEGER(KIND=int_8), DIMENSION(:), POINTER :: i8
REAL(KIND=real_4), DIMENSION(:), POINTER :: r_sp
REAL(KIND=real_8), DIMENSION(:), POINTER :: r_dp
IF (.NOT. acc_devmem_allocated(area%d%acc_devmem)) RETURN !nothing to do
IF (area%d%ref_size == 0) RETURN !nothing to do
SELECT CASE (area%d%data_type)
CASE (dbcsr_type_int_4)
i4 => area%d%i4(:area%d%ref_size)
CALL acc_devmem_host2dev(area%d%acc_devmem, hostmem=i4, stream=area%d%memory_type%acc_stream)
CASE (dbcsr_type_int_8)
i8 => area%d%i8(:area%d%ref_size)
CALL acc_devmem_host2dev(area%d%acc_devmem, hostmem=i8, stream=area%d%memory_type%acc_stream)
CASE (dbcsr_type_real_4)
r_sp => area%d%r_sp(:area%d%ref_size)
CALL acc_devmem_host2dev(area%d%acc_devmem, hostmem=r_sp, stream=area%d%memory_type%acc_stream)
CASE (dbcsr_type_real_8)
r_dp => area%d%r_dp(:area%d%ref_size)
CALL acc_devmem_host2dev(area%d%acc_devmem, hostmem=r_dp, stream=area%d%memory_type%acc_stream)
CASE (dbcsr_type_complex_4)
c_sp => area%d%c_sp(:area%d%ref_size)
CALL acc_devmem_host2dev(area%d%acc_devmem, hostmem=c_sp, stream=area%d%memory_type%acc_stream)
CASE (dbcsr_type_complex_8)
c_dp => area%d%c_dp(:area%d%ref_size)
CALL acc_devmem_host2dev(area%d%acc_devmem, hostmem=c_dp, stream=area%d%memory_type%acc_stream)
CASE default
DBCSR_ABORT("Invalid data type.")
END SELECT
CALL acc_event_record(area%d%acc_ready, area%d%memory_type%acc_stream)
END SUBROUTINE dbcsr_data_host2dev