Make sure default coarse size does not overflow for large matrices.

stopcriterion
Salvatore Filippone 6 years ago
parent 6d77af7964
commit d65a71210e

@ -79,8 +79,9 @@ subroutine mld_c_hierarchy_bld(a,desc_a,prec,info)
! Local Variables
integer(psb_ipk_) :: ictxt, me,np
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz, casize,&
& nplevs, mxplevs, iaggsize
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz,&
& nplevs, mxplevs
integer(psb_lpk_) :: iaggsize, casize
real(psb_spk_) :: mnaggratio, sizeratio, athresh, aomega
class(mld_c_base_smoother_type), allocatable :: coarse_sm, base_sm, med_sm, &
& base_sm2, med_sm2, coarse_sm2
@ -196,8 +197,16 @@ subroutine mld_c_hierarchy_bld(a,desc_a,prec,info)
casize = max(casize,ione)
casize = casize*40_psb_ipk_
call psb_bcast(ictxt,casize)
if (casize > huge(prec%ag_data%min_coarse_size)) then
!
! computed coarse size does not fit in IPK_.
! This is very unlikely, but make sure to put a positive number
!
prec%ag_data%min_coarse_size = huge(prec%ag_data%min_coarse_size)
else
prec%ag_data%min_coarse_size = casize
end if
end if
nplevs = max(itwo,mxplevs)
coarseparms = prec%precv(iszv)%parms

@ -79,8 +79,9 @@ subroutine mld_d_hierarchy_bld(a,desc_a,prec,info)
! Local Variables
integer(psb_ipk_) :: ictxt, me,np
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz, casize,&
& nplevs, mxplevs, iaggsize
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz,&
& nplevs, mxplevs
integer(psb_lpk_) :: iaggsize, casize
real(psb_dpk_) :: mnaggratio, sizeratio, athresh, aomega
class(mld_d_base_smoother_type), allocatable :: coarse_sm, base_sm, med_sm, &
& base_sm2, med_sm2, coarse_sm2
@ -196,8 +197,16 @@ subroutine mld_d_hierarchy_bld(a,desc_a,prec,info)
casize = max(casize,ione)
casize = casize*40_psb_ipk_
call psb_bcast(ictxt,casize)
if (casize > huge(prec%ag_data%min_coarse_size)) then
!
! computed coarse size does not fit in IPK_.
! This is very unlikely, but make sure to put a positive number
!
prec%ag_data%min_coarse_size = huge(prec%ag_data%min_coarse_size)
else
prec%ag_data%min_coarse_size = casize
end if
end if
nplevs = max(itwo,mxplevs)
coarseparms = prec%precv(iszv)%parms

@ -79,8 +79,9 @@ subroutine mld_s_hierarchy_bld(a,desc_a,prec,info)
! Local Variables
integer(psb_ipk_) :: ictxt, me,np
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz, casize,&
& nplevs, mxplevs, iaggsize
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz,&
& nplevs, mxplevs
integer(psb_lpk_) :: iaggsize, casize
real(psb_spk_) :: mnaggratio, sizeratio, athresh, aomega
class(mld_s_base_smoother_type), allocatable :: coarse_sm, base_sm, med_sm, &
& base_sm2, med_sm2, coarse_sm2
@ -196,8 +197,16 @@ subroutine mld_s_hierarchy_bld(a,desc_a,prec,info)
casize = max(casize,ione)
casize = casize*40_psb_ipk_
call psb_bcast(ictxt,casize)
if (casize > huge(prec%ag_data%min_coarse_size)) then
!
! computed coarse size does not fit in IPK_.
! This is very unlikely, but make sure to put a positive number
!
prec%ag_data%min_coarse_size = huge(prec%ag_data%min_coarse_size)
else
prec%ag_data%min_coarse_size = casize
end if
end if
nplevs = max(itwo,mxplevs)
coarseparms = prec%precv(iszv)%parms

@ -79,8 +79,9 @@ subroutine mld_z_hierarchy_bld(a,desc_a,prec,info)
! Local Variables
integer(psb_ipk_) :: ictxt, me,np
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz, casize,&
& nplevs, mxplevs, iaggsize
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz,&
& nplevs, mxplevs
integer(psb_lpk_) :: iaggsize, casize
real(psb_dpk_) :: mnaggratio, sizeratio, athresh, aomega
class(mld_z_base_smoother_type), allocatable :: coarse_sm, base_sm, med_sm, &
& base_sm2, med_sm2, coarse_sm2
@ -196,8 +197,16 @@ subroutine mld_z_hierarchy_bld(a,desc_a,prec,info)
casize = max(casize,ione)
casize = casize*40_psb_ipk_
call psb_bcast(ictxt,casize)
if (casize > huge(prec%ag_data%min_coarse_size)) then
!
! computed coarse size does not fit in IPK_.
! This is very unlikely, but make sure to put a positive number
!
prec%ag_data%min_coarse_size = huge(prec%ag_data%min_coarse_size)
else
prec%ag_data%min_coarse_size = casize
end if
end if
nplevs = max(itwo,mxplevs)
coarseparms = prec%precv(iszv)%parms

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