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qp2/src/mo_two_e_ints/cholesky.irp.f
Anthony Scemama 5a0c8de5a3
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Accelerated cholesky AO-MO transformation
2023-07-05 19:12:03 +02:00

40 lines
1.0 KiB
Fortran

BEGIN_PROVIDER [ double precision, cholesky_mo, (mo_num, mo_num, cholesky_ao_num) ]
implicit none
BEGIN_DOC
! Cholesky vectors in MO basis
END_DOC
integer :: k, i, j
call set_multiple_levels_omp(.False.)
!$OMP PARALLEL DO PRIVATE(k)
do k=1,cholesky_ao_num
do j=1,mo_num
do i=1,mo_num
cholesky_mo(i,j,k) = cholesky_mo_transp(k,i,j)
enddo
enddo
enddo
!$OMP END PARALLEL DO
END_PROVIDER
BEGIN_PROVIDER [ double precision, cholesky_mo_transp, (cholesky_ao_num, mo_num, mo_num) ]
implicit none
BEGIN_DOC
! Cholesky vectors in MO basis
END_DOC
double precision, allocatable :: X(:,:,:)
print *, 'AO->MO Transformation of Cholesky vectors'
allocate(X(mo_num,cholesky_ao_num,ao_num))
call dgemm('T','N', ao_num*cholesky_ao_num, mo_num, ao_num, 1.d0, &
cholesky_ao, ao_num, mo_coef, ao_num, 0.d0, X, ao_num*cholesky_ao_num)
call dgemm('T','N', cholesky_ao_num*mo_num, mo_num, ao_num, 1.d0, &
X, ao_num, mo_coef, ao_num, 0.d0, cholesky_mo_transp, cholesky_ao_num*mo_num)
deallocate(X)
END_PROVIDER