Fixes for support to remapping after merging new context. Needs more testing.

amgprec/amg_c_onelev_mod.f90

@@ -157,7 +157,7 @@ module amg_c_onelev_mod
     type(psb_cspmat_type)          :: ac_pre_remap
     type(psb_desc_type)            :: desc_ac_pre_remap
     integer(psb_ipk_)              :: idest
-    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:) 
+    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:), naggr(:)
   contains
     procedure, pass(rmp) :: clone   => c_remap_data_clone
   end type amg_c_remap_data_type
@@ -704,7 +704,17 @@ contains
     info = psb_success_
     nwv = lv%get_wrksz()
     if (.not.allocated(lv%wrk)) allocate(lv%wrk,stat=info)
-    if (info == 0) call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+    if (info == 0) then
+      if (lv%remap_data%desc_ac_pre_remap%is_asb()) then
+        !
+        !  Need to fix this, we need two different allocations
+        !
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
+             & desc2=lv%remap_data%desc_ac_pre_remap)      
+      else
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+      end if
+    end if
     
   end subroutine c_base_onelev_allocate_wrk
 
@@ -724,7 +734,7 @@ contains
     end if
   end subroutine c_base_onelev_free_wrk
   
-  subroutine c_wrk_alloc(wk,nwv,desc,info,vmold)
+  subroutine c_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
     
     Implicit None
@@ -735,11 +745,35 @@ contains
     type(psb_desc_type), intent(in)                   :: desc
     integer(psb_ipk_), intent(out)                    :: info 
     class(psb_c_base_vect_type), intent(in), optional  :: vmold
+    type(psb_desc_type), intent(in), optional          :: desc2
     !
     integer(psb_ipk_) :: i
 
     info = psb_success_
     call wk%free(info)
+    if  (present(desc2)) then
+!!$      write(0,*) 'Check on wrk_alloc 2',&
+!!$           & desc2%get_local_rows(), desc%get_local_rows(),&
+!!$           & desc2%get_local_cols(),desc%get_local_cols()
+!!$      flush(0)
+      if (desc2%get_local_cols()>desc%get_local_cols()) then
+        call psb_geasb(wk%vx2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vy2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vtx,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vty,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        allocate(wk%wv(nwv),stat=info)
+        do i=1,nwv
+          call psb_geasb(wk%wv(i),desc2,info,&
+               & scratch=.true.,mold=vmold)
+        end do
+      else
+!!$        write(0,*) 'Check on wrk_alloc 1.5 ',&
+!!$             & desc%get_local_rows(),&
+!!$             & desc%get_local_cols()
         call psb_geasb(wk%vx2l,desc,info,&
              & scratch=.true.,mold=vmold)
         call psb_geasb(wk%vy2l,desc,info,&
@@ -753,7 +787,25 @@ contains
           call psb_geasb(wk%wv(i),desc,info,&
                & scratch=.true.,mold=vmold)
         end do
-    
+      end if
+    else
+!!$      write(0,*) 'Check on wrk_alloc 1 ',&
+!!$           & desc%get_local_rows(),&
+!!$           & desc%get_local_cols()
+      call psb_geasb(wk%vx2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vy2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vtx,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vty,desc,info,&
+           & scratch=.true.,mold=vmold)
+      allocate(wk%wv(nwv),stat=info)
+      do i=1,nwv
+        call psb_geasb(wk%wv(i),desc,info,&
+             & scratch=.true.,mold=vmold)
+      end do
+    end if
   end subroutine c_wrk_alloc
     
   subroutine c_wrk_free(wk,info)

amgprec/amg_c_prec_type.f90

@@ -738,15 +738,15 @@ contains
     character(len=*), intent(in), optional  :: prefix, head
     logical, optional, intent(in)    :: smoother, solver,ac, rp, tprol, global_num
     integer(psb_ipk_)   :: i, j, il1, iln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np, iproc_
     character(len=80)   :: prefix_
     character(len=120)  :: fname ! len should be at least 20 more than
     !  len of prefix_ 
 
     info = 0
-    icontxt = prec%ctxt
+    ctxt = prec%ctxt
-    call psb_info(icontxt,iam,np)
+    call psb_info(ctxt,iam,np)
     
     iln = size(prec%precv)
     if (present(istart)) then 
@@ -812,7 +812,7 @@ contains
     integer(psb_ipk_), intent(out)             :: info
     ! Local vars
     integer(psb_ipk_)   :: i, j, ln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np
 
     info = psb_success_

amgprec/amg_d_onelev_mod.f90

@@ -157,7 +157,7 @@ module amg_d_onelev_mod
     type(psb_dspmat_type)          :: ac_pre_remap
     type(psb_desc_type)            :: desc_ac_pre_remap
     integer(psb_ipk_)              :: idest
-    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:) 
+    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:), naggr(:)
   contains
     procedure, pass(rmp) :: clone   => d_remap_data_clone
   end type amg_d_remap_data_type
@@ -704,7 +704,17 @@ contains
     info = psb_success_
     nwv = lv%get_wrksz()
     if (.not.allocated(lv%wrk)) allocate(lv%wrk,stat=info)
-    if (info == 0) call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+    if (info == 0) then
+      if (lv%remap_data%desc_ac_pre_remap%is_asb()) then
+        !
+        !  Need to fix this, we need two different allocations
+        !
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
+             & desc2=lv%remap_data%desc_ac_pre_remap)      
+      else
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+      end if
+    end if
     
   end subroutine d_base_onelev_allocate_wrk
 
@@ -724,7 +734,7 @@ contains
     end if
   end subroutine d_base_onelev_free_wrk
   
-  subroutine d_wrk_alloc(wk,nwv,desc,info,vmold)
+  subroutine d_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
     
     Implicit None
@@ -735,11 +745,35 @@ contains
     type(psb_desc_type), intent(in)                   :: desc
     integer(psb_ipk_), intent(out)                    :: info 
     class(psb_d_base_vect_type), intent(in), optional  :: vmold
+    type(psb_desc_type), intent(in), optional          :: desc2
     !
     integer(psb_ipk_) :: i
 
     info = psb_success_
     call wk%free(info)
+    if  (present(desc2)) then
+!!$      write(0,*) 'Check on wrk_alloc 2',&
+!!$           & desc2%get_local_rows(), desc%get_local_rows(),&
+!!$           & desc2%get_local_cols(),desc%get_local_cols()
+!!$      flush(0)
+      if (desc2%get_local_cols()>desc%get_local_cols()) then
+        call psb_geasb(wk%vx2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vy2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vtx,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vty,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        allocate(wk%wv(nwv),stat=info)
+        do i=1,nwv
+          call psb_geasb(wk%wv(i),desc2,info,&
+               & scratch=.true.,mold=vmold)
+        end do
+      else
+!!$        write(0,*) 'Check on wrk_alloc 1.5 ',&
+!!$             & desc%get_local_rows(),&
+!!$             & desc%get_local_cols()
         call psb_geasb(wk%vx2l,desc,info,&
              & scratch=.true.,mold=vmold)
         call psb_geasb(wk%vy2l,desc,info,&
@@ -753,7 +787,25 @@ contains
           call psb_geasb(wk%wv(i),desc,info,&
                & scratch=.true.,mold=vmold)
         end do
-    
+      end if
+    else
+!!$      write(0,*) 'Check on wrk_alloc 1 ',&
+!!$           & desc%get_local_rows(),&
+!!$           & desc%get_local_cols()
+      call psb_geasb(wk%vx2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vy2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vtx,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vty,desc,info,&
+           & scratch=.true.,mold=vmold)
+      allocate(wk%wv(nwv),stat=info)
+      do i=1,nwv
+        call psb_geasb(wk%wv(i),desc,info,&
+             & scratch=.true.,mold=vmold)
+      end do
+    end if
   end subroutine d_wrk_alloc
     
   subroutine d_wrk_free(wk,info)

amgprec/amg_d_prec_type.f90

@@ -738,15 +738,15 @@ contains
     character(len=*), intent(in), optional  :: prefix, head
     logical, optional, intent(in)    :: smoother, solver,ac, rp, tprol, global_num
     integer(psb_ipk_)   :: i, j, il1, iln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np, iproc_
     character(len=80)   :: prefix_
     character(len=120)  :: fname ! len should be at least 20 more than
     !  len of prefix_ 
 
     info = 0
-    icontxt = prec%ctxt
+    ctxt = prec%ctxt
-    call psb_info(icontxt,iam,np)
+    call psb_info(ctxt,iam,np)
     
     iln = size(prec%precv)
     if (present(istart)) then 
@@ -812,7 +812,7 @@ contains
     integer(psb_ipk_), intent(out)             :: info
     ! Local vars
     integer(psb_ipk_)   :: i, j, ln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np
 
     info = psb_success_

amgprec/amg_s_onelev_mod.f90

@@ -157,7 +157,7 @@ module amg_s_onelev_mod
     type(psb_sspmat_type)          :: ac_pre_remap
     type(psb_desc_type)            :: desc_ac_pre_remap
     integer(psb_ipk_)              :: idest
-    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:) 
+    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:), naggr(:)
   contains
     procedure, pass(rmp) :: clone   => s_remap_data_clone
   end type amg_s_remap_data_type
@@ -704,7 +704,17 @@ contains
     info = psb_success_
     nwv = lv%get_wrksz()
     if (.not.allocated(lv%wrk)) allocate(lv%wrk,stat=info)
-    if (info == 0) call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+    if (info == 0) then
+      if (lv%remap_data%desc_ac_pre_remap%is_asb()) then
+        !
+        !  Need to fix this, we need two different allocations
+        !
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
+             & desc2=lv%remap_data%desc_ac_pre_remap)      
+      else
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+      end if
+    end if
     
   end subroutine s_base_onelev_allocate_wrk
 
@@ -724,7 +734,7 @@ contains
     end if
   end subroutine s_base_onelev_free_wrk
   
-  subroutine s_wrk_alloc(wk,nwv,desc,info,vmold)
+  subroutine s_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
     
     Implicit None
@@ -735,11 +745,35 @@ contains
     type(psb_desc_type), intent(in)                   :: desc
     integer(psb_ipk_), intent(out)                    :: info 
     class(psb_s_base_vect_type), intent(in), optional  :: vmold
+    type(psb_desc_type), intent(in), optional          :: desc2
     !
     integer(psb_ipk_) :: i
 
     info = psb_success_
     call wk%free(info)
+    if  (present(desc2)) then
+!!$      write(0,*) 'Check on wrk_alloc 2',&
+!!$           & desc2%get_local_rows(), desc%get_local_rows(),&
+!!$           & desc2%get_local_cols(),desc%get_local_cols()
+!!$      flush(0)
+      if (desc2%get_local_cols()>desc%get_local_cols()) then
+        call psb_geasb(wk%vx2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vy2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vtx,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vty,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        allocate(wk%wv(nwv),stat=info)
+        do i=1,nwv
+          call psb_geasb(wk%wv(i),desc2,info,&
+               & scratch=.true.,mold=vmold)
+        end do
+      else
+!!$        write(0,*) 'Check on wrk_alloc 1.5 ',&
+!!$             & desc%get_local_rows(),&
+!!$             & desc%get_local_cols()
         call psb_geasb(wk%vx2l,desc,info,&
              & scratch=.true.,mold=vmold)
         call psb_geasb(wk%vy2l,desc,info,&
@@ -753,7 +787,25 @@ contains
           call psb_geasb(wk%wv(i),desc,info,&
                & scratch=.true.,mold=vmold)
         end do
-    
+      end if
+    else
+!!$      write(0,*) 'Check on wrk_alloc 1 ',&
+!!$           & desc%get_local_rows(),&
+!!$           & desc%get_local_cols()
+      call psb_geasb(wk%vx2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vy2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vtx,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vty,desc,info,&
+           & scratch=.true.,mold=vmold)
+      allocate(wk%wv(nwv),stat=info)
+      do i=1,nwv
+        call psb_geasb(wk%wv(i),desc,info,&
+             & scratch=.true.,mold=vmold)
+      end do
+    end if
   end subroutine s_wrk_alloc
     
   subroutine s_wrk_free(wk,info)

amgprec/amg_s_prec_type.f90

@@ -738,15 +738,15 @@ contains
     character(len=*), intent(in), optional  :: prefix, head
     logical, optional, intent(in)    :: smoother, solver,ac, rp, tprol, global_num
     integer(psb_ipk_)   :: i, j, il1, iln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np, iproc_
     character(len=80)   :: prefix_
     character(len=120)  :: fname ! len should be at least 20 more than
     !  len of prefix_ 
 
     info = 0
-    icontxt = prec%ctxt
+    ctxt = prec%ctxt
-    call psb_info(icontxt,iam,np)
+    call psb_info(ctxt,iam,np)
     
     iln = size(prec%precv)
     if (present(istart)) then 
@@ -812,7 +812,7 @@ contains
     integer(psb_ipk_), intent(out)             :: info
     ! Local vars
     integer(psb_ipk_)   :: i, j, ln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np
 
     info = psb_success_

amgprec/amg_z_onelev_mod.f90

@@ -157,7 +157,7 @@ module amg_z_onelev_mod
     type(psb_zspmat_type)          :: ac_pre_remap
     type(psb_desc_type)            :: desc_ac_pre_remap
     integer(psb_ipk_)              :: idest
-    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:) 
+    integer(psb_ipk_), allocatable :: isrc(:), nrsrc(:), naggr(:)
   contains
     procedure, pass(rmp) :: clone   => z_remap_data_clone
   end type amg_z_remap_data_type
@@ -704,7 +704,17 @@ contains
     info = psb_success_
     nwv = lv%get_wrksz()
     if (.not.allocated(lv%wrk)) allocate(lv%wrk,stat=info)
-    if (info == 0) call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+    if (info == 0) then
+      if (lv%remap_data%desc_ac_pre_remap%is_asb()) then
+        !
+        !  Need to fix this, we need two different allocations
+        !
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
+             & desc2=lv%remap_data%desc_ac_pre_remap)      
+      else
+        call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
+      end if
+    end if
     
   end subroutine z_base_onelev_allocate_wrk
 
@@ -724,7 +734,7 @@ contains
     end if
   end subroutine z_base_onelev_free_wrk
   
-  subroutine z_wrk_alloc(wk,nwv,desc,info,vmold)
+  subroutine z_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
     
     Implicit None
@@ -735,11 +745,35 @@ contains
     type(psb_desc_type), intent(in)                   :: desc
     integer(psb_ipk_), intent(out)                    :: info 
     class(psb_z_base_vect_type), intent(in), optional  :: vmold
+    type(psb_desc_type), intent(in), optional          :: desc2
     !
     integer(psb_ipk_) :: i
 
     info = psb_success_
     call wk%free(info)
+    if  (present(desc2)) then
+!!$      write(0,*) 'Check on wrk_alloc 2',&
+!!$           & desc2%get_local_rows(), desc%get_local_rows(),&
+!!$           & desc2%get_local_cols(),desc%get_local_cols()
+!!$      flush(0)
+      if (desc2%get_local_cols()>desc%get_local_cols()) then
+        call psb_geasb(wk%vx2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vy2l,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vtx,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        call psb_geasb(wk%vty,desc2,info,&
+             & scratch=.true.,mold=vmold)
+        allocate(wk%wv(nwv),stat=info)
+        do i=1,nwv
+          call psb_geasb(wk%wv(i),desc2,info,&
+               & scratch=.true.,mold=vmold)
+        end do
+      else
+!!$        write(0,*) 'Check on wrk_alloc 1.5 ',&
+!!$             & desc%get_local_rows(),&
+!!$             & desc%get_local_cols()
         call psb_geasb(wk%vx2l,desc,info,&
              & scratch=.true.,mold=vmold)
         call psb_geasb(wk%vy2l,desc,info,&
@@ -753,7 +787,25 @@ contains
           call psb_geasb(wk%wv(i),desc,info,&
                & scratch=.true.,mold=vmold)
         end do
-    
+      end if
+    else
+!!$      write(0,*) 'Check on wrk_alloc 1 ',&
+!!$           & desc%get_local_rows(),&
+!!$           & desc%get_local_cols()
+      call psb_geasb(wk%vx2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vy2l,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vtx,desc,info,&
+           & scratch=.true.,mold=vmold)
+      call psb_geasb(wk%vty,desc,info,&
+           & scratch=.true.,mold=vmold)
+      allocate(wk%wv(nwv),stat=info)
+      do i=1,nwv
+        call psb_geasb(wk%wv(i),desc,info,&
+             & scratch=.true.,mold=vmold)
+      end do
+    end if
   end subroutine z_wrk_alloc
     
   subroutine z_wrk_free(wk,info)

amgprec/amg_z_prec_type.f90

@@ -738,15 +738,15 @@ contains
     character(len=*), intent(in), optional  :: prefix, head
     logical, optional, intent(in)    :: smoother, solver,ac, rp, tprol, global_num
     integer(psb_ipk_)   :: i, j, il1, iln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np, iproc_
     character(len=80)   :: prefix_
     character(len=120)  :: fname ! len should be at least 20 more than
     !  len of prefix_ 
 
     info = 0
-    icontxt = prec%ctxt
+    ctxt = prec%ctxt
-    call psb_info(icontxt,iam,np)
+    call psb_info(ctxt,iam,np)
     
     iln = size(prec%precv)
     if (present(istart)) then 
@@ -812,7 +812,7 @@ contains
     integer(psb_ipk_), intent(out)             :: info
     ! Local vars
     integer(psb_ipk_)   :: i, j, ln, lev
-    type(psb_ctxt_type) :: icontxt
+    type(psb_ctxt_type) :: ctxt
     integer(psb_ipk_)   :: iam, np
 
     info = psb_success_

amgprec/impl/amg_c_hierarchy_bld.f90

@@ -455,6 +455,31 @@ subroutine amg_c_hierarchy_bld(a,desc_a,prec,info)
     end do
   end if
 
+
+  !write(0,*) 'Should we remap? '
+  if (.true..and.(np>=4)) then
+    write(0,*) 'Going for remapping '
+    if (.true.) then 
+      associate(lv=>prec%precv(iszv), rmp => prec%precv(iszv)%remap_data)
+        call lv%desc_ac%clone(rmp%desc_ac_pre_remap,info)
+        call lv%ac%clone(rmp%ac_pre_remap,info)
+        if (np >= 8) then 
+          call psb_remap(np/4,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        else
+          call psb_remap(np/2,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        end if
+        write(0,*) me,' Out of remapping ',rmp%desc_ac_pre_remap%get_fmt(),' ',&
+             & lv%desc_ac%get_fmt(),sum(lv%linmap%naggr),sum(rmp%naggr)
+        lv%linmap%naggr(:)    =  rmp%naggr(:)
+        lv%linmap%p_desc_V => rmp%desc_ac_pre_remap
+        lv%base_a          => lv%ac
+        lv%base_desc       => lv%desc_ac
+      end associate 
+    end if
+  end if
+
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_internal_error_,name,&
          & a_err='Internal hierarchy build' )

amgprec/impl/amg_c_smoothers_bld.f90

@@ -117,6 +117,10 @@ subroutine amg_c_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   info = psb_success_
   ctxt = desc_a%get_context()
   call psb_info(ctxt, me, np)
+  if (me <0) then
+!!$    write(0,*) 'out of CTXT, should not do anything '
+    goto 9998
+  end if
 
   if (debug_level >= psb_debug_outer_) &
        & write(debug_unit,*) me,' ',trim(name),&
@@ -289,6 +293,7 @@ subroutine amg_c_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     !
     ! build the base preconditioner at level i
     !
+!!$    write(0,*) me,' Building at level ',i
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
     
     if (info /= psb_success_) then 
@@ -304,6 +309,7 @@ subroutine amg_c_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
        & write(debug_unit,*) me,' ',trim(name),&
        & 'Exiting with',iszv,' levels'
 
+9998 continue
   call psb_erractionrestore(err_act)
   return
 

amgprec/impl/amg_cmlprec_aply.f90

@@ -393,7 +393,7 @@ contains
     if(debug_level > 1) then
       write(debug_unit,*) me,' Start inner_ml_aply at level ',level, info
     end if
-
+    if (me >= 0) then
       select case(p%precv(level)%parms%ml_cycle) 
         
       case(amg_no_ml_)
@@ -426,6 +426,7 @@ contains
       if(debug_level > 1) then
         write(debug_unit,*) me,' End inner_ml_aply at level ',level
       end if
+    end if
 
     call psb_erractionrestore(err_act)
     return
@@ -492,6 +493,7 @@ contains
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv)
 
+      if (me >= 0) then 
         if (allocated(p%precv(level)%sm2a)) then
           call psb_geaxpby(cone,vx2l,czero,vy2l,base_desc,info)
           
@@ -515,6 +517,7 @@ contains
                & base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
         end if
+      end if
       if (info /= psb_success_) then
         call psb_errpush(psb_err_internal_error_,name,&
              & a_err='Error during ADD smoother_apply')
@@ -602,7 +605,6 @@ contains
     end if
     ctxt = p%precv(level)%base_desc%get_context()
     call psb_info(ctxt, me, np)
-
     if(debug_level > 1) then
       write(debug_unit,*) me,' inner_mult at level ',level
     end if
@@ -623,6 +625,8 @@ contains
         !
 
         if (pre) then
+          if (me >=0) then
+!!$            write(0,*) me,'Applying smoother pre ', level
             if (trans == 'N') then 
               sweeps = p%precv(level)%parms%sweeps_pre
               if (info == psb_success_) call p%precv(level)%sm%apply(cone,&
@@ -640,6 +644,7 @@ contains
                    & a_err='Error during PRE smoother_apply')
               goto 9999
             end if
+          end if
         endif
         !
         ! Compute the residual for next level and call recursively
@@ -696,11 +701,13 @@ contains
 
         if (p%precv(level)%parms%ml_cycle == amg_wcycle_ml_) then
 
+          if (me >=0) then 
             call psb_geaxpby(cone,vx2l, czero,vty,&
                  & base_desc,info)        
             if (info == psb_success_) call psb_spmm(-cone,base_a,&
                  & vy2l,cone,vty,&
                  & base_desc,info,work=work,trans=trans)
+          end if
           if (info == psb_success_) &
                & call p%precv(level+1)%map_rstr(cone,vty,&
                & czero,p%precv(level+1)%wrk%vx2l,info,work=work,&
@@ -728,6 +735,7 @@ contains
 
 
         if (post) then
+          if (me >=0) then 
             call psb_geaxpby(cone,vx2l,&
                  & czero,vty,&
                  & base_desc,info)
@@ -754,6 +762,7 @@ contains
                    & vty,cone,vy2l, base_desc, trans,&
                    & sweeps,work,wv,info,init='Z')
             end if
+          end if
 
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
@@ -764,11 +773,14 @@ contains
         endif
 
       else if (level == nlev) then
-
+!!$        write(0,*) me,'Applying smoother at top level ',psb_errstatus_fatal()
+        if (me >=0) then 
           sweeps = p%precv(level)%parms%sweeps_pre
           if (info == psb_success_) call p%precv(level)%sm%apply(cone,&
                & vx2l,czero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info)
+        end if 
+!!$        write(0,*) me,' Done applying smoother at top level ',psb_errstatus_fatal()
 
       else
 
@@ -778,7 +790,7 @@ contains
         goto 9999
       end if
     end associate
-    
+9998 continue
     call psb_erractionrestore(err_act)
     return
 
@@ -847,7 +859,9 @@ contains
          & vtx => p%precv(level)%wrk%vtx,vty => p%precv(level)%wrk%vty,&
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv(8:))
+
       if (level == nlev) then 
+        if (me >= 0) then 
           !
           ! Apply smoother 
           !
@@ -855,8 +869,9 @@ contains
           if (info == psb_success_) call p%precv(level)%sm%apply(cone,&
                & vx2l,czero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
-
+        end if
       else  if (level < nlev) then 
+        if (me >= 0) then 
 
           if (trans == 'N') then 
             sweeps = p%precv(level)%parms%sweeps_pre
@@ -869,14 +884,12 @@ contains
                  & vx2l,czero,vy2l,base_desc, trans,&
                  & sweeps,work,wv,info,init='Z')
           end if
-
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
                  & a_err='Error during 2-PRE smoother_apply')
             goto 9999
           end if
 
-
           !
           ! Compute the residual and call recursively
           !
@@ -892,7 +905,7 @@ contains
                  & a_err='Error during residue')
             goto 9999
           end if
-
+        end if
         ! Apply the restriction
         call  p%precv(level + 1)%map_rstr(cone,vty,&
              & czero,p%precv(level + 1)%wrk%vx2l,&
@@ -940,7 +953,7 @@ contains
                & a_err='Error during prolongation')
           goto 9999
         end if
-
+        if (me >= 0) then 
           !
           ! Compute the residual
           !
@@ -974,6 +987,8 @@ contains
                  & a_err='Error during POST smoother_apply')
             goto 9999
           end if
+        end if
+
       else
 
         info = psb_err_internal_error_ 
@@ -991,7 +1006,6 @@ contains
 
   end subroutine amg_c_inner_k_cycle
   
-
   recursive subroutine amg_cinneritkcycle(p, level, trans, work, innersolv)
     use psb_base_mod
     use amg_prec_mod

amgprec/impl/amg_d_hierarchy_bld.f90

@@ -455,6 +455,31 @@ subroutine amg_d_hierarchy_bld(a,desc_a,prec,info)
     end do
   end if
 
+
+  !write(0,*) 'Should we remap? '
+  if (.true..and.(np>=4)) then
+    write(0,*) 'Going for remapping '
+    if (.true.) then 
+      associate(lv=>prec%precv(iszv), rmp => prec%precv(iszv)%remap_data)
+        call lv%desc_ac%clone(rmp%desc_ac_pre_remap,info)
+        call lv%ac%clone(rmp%ac_pre_remap,info)
+        if (np >= 8) then 
+          call psb_remap(np/4,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        else
+          call psb_remap(np/2,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        end if
+        write(0,*) me,' Out of remapping ',rmp%desc_ac_pre_remap%get_fmt(),' ',&
+             & lv%desc_ac%get_fmt(),sum(lv%linmap%naggr),sum(rmp%naggr)
+        lv%linmap%naggr(:)    =  rmp%naggr(:)
+        lv%linmap%p_desc_V => rmp%desc_ac_pre_remap
+        lv%base_a          => lv%ac
+        lv%base_desc       => lv%desc_ac
+      end associate 
+    end if
+  end if
+
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_internal_error_,name,&
          & a_err='Internal hierarchy build' )

amgprec/impl/amg_d_smoothers_bld.f90

@@ -117,6 +117,10 @@ subroutine amg_d_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   info = psb_success_
   ctxt = desc_a%get_context()
   call psb_info(ctxt, me, np)
+  if (me <0) then
+!!$    write(0,*) 'out of CTXT, should not do anything '
+    goto 9998
+  end if
 
   if (debug_level >= psb_debug_outer_) &
        & write(debug_unit,*) me,' ',trim(name),&
@@ -289,6 +293,7 @@ subroutine amg_d_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     !
     ! build the base preconditioner at level i
     !
+!!$    write(0,*) me,' Building at level ',i
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
     
     if (info /= psb_success_) then 
@@ -304,6 +309,7 @@ subroutine amg_d_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
        & write(debug_unit,*) me,' ',trim(name),&
        & 'Exiting with',iszv,' levels'
 
+9998 continue
   call psb_erractionrestore(err_act)
   return
 

amgprec/impl/amg_dmlprec_aply.f90

@@ -393,7 +393,7 @@ contains
     if(debug_level > 1) then
       write(debug_unit,*) me,' Start inner_ml_aply at level ',level, info
     end if
-
+    if (me >= 0) then
       select case(p%precv(level)%parms%ml_cycle) 
         
       case(amg_no_ml_)
@@ -426,6 +426,7 @@ contains
       if(debug_level > 1) then
         write(debug_unit,*) me,' End inner_ml_aply at level ',level
       end if
+    end if
 
     call psb_erractionrestore(err_act)
     return
@@ -492,6 +493,7 @@ contains
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv)
 
+      if (me >= 0) then 
         if (allocated(p%precv(level)%sm2a)) then
           call psb_geaxpby(done,vx2l,dzero,vy2l,base_desc,info)
           
@@ -515,6 +517,7 @@ contains
                & base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
         end if
+      end if
       if (info /= psb_success_) then
         call psb_errpush(psb_err_internal_error_,name,&
              & a_err='Error during ADD smoother_apply')
@@ -602,7 +605,6 @@ contains
     end if
     ctxt = p%precv(level)%base_desc%get_context()
     call psb_info(ctxt, me, np)
-
     if(debug_level > 1) then
       write(debug_unit,*) me,' inner_mult at level ',level
     end if
@@ -623,6 +625,8 @@ contains
         !
 
         if (pre) then
+          if (me >=0) then
+!!$            write(0,*) me,'Applying smoother pre ', level
             if (trans == 'N') then 
               sweeps = p%precv(level)%parms%sweeps_pre
               if (info == psb_success_) call p%precv(level)%sm%apply(done,&
@@ -640,6 +644,7 @@ contains
                    & a_err='Error during PRE smoother_apply')
               goto 9999
             end if
+          end if
         endif
         !
         ! Compute the residual for next level and call recursively
@@ -696,11 +701,13 @@ contains
 
         if (p%precv(level)%parms%ml_cycle == amg_wcycle_ml_) then
 
+          if (me >=0) then 
             call psb_geaxpby(done,vx2l, dzero,vty,&
                  & base_desc,info)        
             if (info == psb_success_) call psb_spmm(-done,base_a,&
                  & vy2l,done,vty,&
                  & base_desc,info,work=work,trans=trans)
+          end if
           if (info == psb_success_) &
                & call p%precv(level+1)%map_rstr(done,vty,&
                & dzero,p%precv(level+1)%wrk%vx2l,info,work=work,&
@@ -728,6 +735,7 @@ contains
 
 
         if (post) then
+          if (me >=0) then 
             call psb_geaxpby(done,vx2l,&
                  & dzero,vty,&
                  & base_desc,info)
@@ -754,6 +762,7 @@ contains
                    & vty,done,vy2l, base_desc, trans,&
                    & sweeps,work,wv,info,init='Z')
             end if
+          end if
 
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
@@ -764,11 +773,14 @@ contains
         endif
 
       else if (level == nlev) then
-
+!!$        write(0,*) me,'Applying smoother at top level ',psb_errstatus_fatal()
+        if (me >=0) then 
           sweeps = p%precv(level)%parms%sweeps_pre
           if (info == psb_success_) call p%precv(level)%sm%apply(done,&
                & vx2l,dzero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info)
+        end if 
+!!$        write(0,*) me,' Done applying smoother at top level ',psb_errstatus_fatal()
 
       else
 
@@ -778,7 +790,7 @@ contains
         goto 9999
       end if
     end associate
-    
+9998 continue
     call psb_erractionrestore(err_act)
     return
 
@@ -847,7 +859,9 @@ contains
          & vtx => p%precv(level)%wrk%vtx,vty => p%precv(level)%wrk%vty,&
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv(8:))
+
       if (level == nlev) then 
+        if (me >= 0) then 
           !
           ! Apply smoother 
           !
@@ -855,8 +869,9 @@ contains
           if (info == psb_success_) call p%precv(level)%sm%apply(done,&
                & vx2l,dzero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
-
+        end if
       else  if (level < nlev) then 
+        if (me >= 0) then 
 
           if (trans == 'N') then 
             sweeps = p%precv(level)%parms%sweeps_pre
@@ -869,14 +884,12 @@ contains
                  & vx2l,dzero,vy2l,base_desc, trans,&
                  & sweeps,work,wv,info,init='Z')
           end if
-
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
                  & a_err='Error during 2-PRE smoother_apply')
             goto 9999
           end if
 
-
           !
           ! Compute the residual and call recursively
           !
@@ -892,7 +905,7 @@ contains
                  & a_err='Error during residue')
             goto 9999
           end if
-
+        end if
         ! Apply the restriction
         call  p%precv(level + 1)%map_rstr(done,vty,&
              & dzero,p%precv(level + 1)%wrk%vx2l,&
@@ -940,7 +953,7 @@ contains
                & a_err='Error during prolongation')
           goto 9999
         end if
-
+        if (me >= 0) then 
           !
           ! Compute the residual
           !
@@ -974,6 +987,8 @@ contains
                  & a_err='Error during POST smoother_apply')
             goto 9999
           end if
+        end if
+
       else
 
         info = psb_err_internal_error_ 
@@ -991,7 +1006,6 @@ contains
 
   end subroutine amg_d_inner_k_cycle
   
-
   recursive subroutine amg_dinneritkcycle(p, level, trans, work, innersolv)
     use psb_base_mod
     use amg_prec_mod

amgprec/impl/amg_s_hierarchy_bld.f90

@@ -455,6 +455,31 @@ subroutine amg_s_hierarchy_bld(a,desc_a,prec,info)
     end do
   end if
 
+
+  !write(0,*) 'Should we remap? '
+  if (.true..and.(np>=4)) then
+    write(0,*) 'Going for remapping '
+    if (.true.) then 
+      associate(lv=>prec%precv(iszv), rmp => prec%precv(iszv)%remap_data)
+        call lv%desc_ac%clone(rmp%desc_ac_pre_remap,info)
+        call lv%ac%clone(rmp%ac_pre_remap,info)
+        if (np >= 8) then 
+          call psb_remap(np/4,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        else
+          call psb_remap(np/2,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        end if
+        write(0,*) me,' Out of remapping ',rmp%desc_ac_pre_remap%get_fmt(),' ',&
+             & lv%desc_ac%get_fmt(),sum(lv%linmap%naggr),sum(rmp%naggr)
+        lv%linmap%naggr(:)    =  rmp%naggr(:)
+        lv%linmap%p_desc_V => rmp%desc_ac_pre_remap
+        lv%base_a          => lv%ac
+        lv%base_desc       => lv%desc_ac
+      end associate 
+    end if
+  end if
+
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_internal_error_,name,&
          & a_err='Internal hierarchy build' )

amgprec/impl/amg_s_smoothers_bld.f90

@@ -117,6 +117,10 @@ subroutine amg_s_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   info = psb_success_
   ctxt = desc_a%get_context()
   call psb_info(ctxt, me, np)
+  if (me <0) then
+!!$    write(0,*) 'out of CTXT, should not do anything '
+    goto 9998
+  end if
 
   if (debug_level >= psb_debug_outer_) &
        & write(debug_unit,*) me,' ',trim(name),&
@@ -289,6 +293,7 @@ subroutine amg_s_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     !
     ! build the base preconditioner at level i
     !
+!!$    write(0,*) me,' Building at level ',i
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
     
     if (info /= psb_success_) then 
@@ -304,6 +309,7 @@ subroutine amg_s_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
        & write(debug_unit,*) me,' ',trim(name),&
        & 'Exiting with',iszv,' levels'
 
+9998 continue
   call psb_erractionrestore(err_act)
   return
 

amgprec/impl/amg_smlprec_aply.f90

@@ -393,7 +393,7 @@ contains
     if(debug_level > 1) then
       write(debug_unit,*) me,' Start inner_ml_aply at level ',level, info
     end if
-
+    if (me >= 0) then
       select case(p%precv(level)%parms%ml_cycle) 
         
       case(amg_no_ml_)
@@ -426,6 +426,7 @@ contains
       if(debug_level > 1) then
         write(debug_unit,*) me,' End inner_ml_aply at level ',level
       end if
+    end if
 
     call psb_erractionrestore(err_act)
     return
@@ -492,6 +493,7 @@ contains
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv)
 
+      if (me >= 0) then 
         if (allocated(p%precv(level)%sm2a)) then
           call psb_geaxpby(sone,vx2l,szero,vy2l,base_desc,info)
           
@@ -515,6 +517,7 @@ contains
                & base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
         end if
+      end if
       if (info /= psb_success_) then
         call psb_errpush(psb_err_internal_error_,name,&
              & a_err='Error during ADD smoother_apply')
@@ -602,7 +605,6 @@ contains
     end if
     ctxt = p%precv(level)%base_desc%get_context()
     call psb_info(ctxt, me, np)
-
     if(debug_level > 1) then
       write(debug_unit,*) me,' inner_mult at level ',level
     end if
@@ -623,6 +625,8 @@ contains
         !
 
         if (pre) then
+          if (me >=0) then
+!!$            write(0,*) me,'Applying smoother pre ', level
             if (trans == 'N') then 
               sweeps = p%precv(level)%parms%sweeps_pre
               if (info == psb_success_) call p%precv(level)%sm%apply(sone,&
@@ -640,6 +644,7 @@ contains
                    & a_err='Error during PRE smoother_apply')
               goto 9999
             end if
+          end if
         endif
         !
         ! Compute the residual for next level and call recursively
@@ -696,11 +701,13 @@ contains
 
         if (p%precv(level)%parms%ml_cycle == amg_wcycle_ml_) then
 
+          if (me >=0) then 
             call psb_geaxpby(sone,vx2l, szero,vty,&
                  & base_desc,info)        
             if (info == psb_success_) call psb_spmm(-sone,base_a,&
                  & vy2l,sone,vty,&
                  & base_desc,info,work=work,trans=trans)
+          end if
           if (info == psb_success_) &
                & call p%precv(level+1)%map_rstr(sone,vty,&
                & szero,p%precv(level+1)%wrk%vx2l,info,work=work,&
@@ -728,6 +735,7 @@ contains
 
 
         if (post) then
+          if (me >=0) then 
             call psb_geaxpby(sone,vx2l,&
                  & szero,vty,&
                  & base_desc,info)
@@ -754,6 +762,7 @@ contains
                    & vty,sone,vy2l, base_desc, trans,&
                    & sweeps,work,wv,info,init='Z')
             end if
+          end if
 
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
@@ -764,11 +773,14 @@ contains
         endif
 
       else if (level == nlev) then
-
+!!$        write(0,*) me,'Applying smoother at top level ',psb_errstatus_fatal()
+        if (me >=0) then 
           sweeps = p%precv(level)%parms%sweeps_pre
           if (info == psb_success_) call p%precv(level)%sm%apply(sone,&
                & vx2l,szero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info)
+        end if 
+!!$        write(0,*) me,' Done applying smoother at top level ',psb_errstatus_fatal()
 
       else
 
@@ -778,7 +790,7 @@ contains
         goto 9999
       end if
     end associate
-    
+9998 continue
     call psb_erractionrestore(err_act)
     return
 
@@ -847,7 +859,9 @@ contains
          & vtx => p%precv(level)%wrk%vtx,vty => p%precv(level)%wrk%vty,&
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv(8:))
+
       if (level == nlev) then 
+        if (me >= 0) then 
           !
           ! Apply smoother 
           !
@@ -855,8 +869,9 @@ contains
           if (info == psb_success_) call p%precv(level)%sm%apply(sone,&
                & vx2l,szero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
-
+        end if
       else  if (level < nlev) then 
+        if (me >= 0) then 
 
           if (trans == 'N') then 
             sweeps = p%precv(level)%parms%sweeps_pre
@@ -869,14 +884,12 @@ contains
                  & vx2l,szero,vy2l,base_desc, trans,&
                  & sweeps,work,wv,info,init='Z')
           end if
-
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
                  & a_err='Error during 2-PRE smoother_apply')
             goto 9999
           end if
 
-
           !
           ! Compute the residual and call recursively
           !
@@ -892,7 +905,7 @@ contains
                  & a_err='Error during residue')
             goto 9999
           end if
-
+        end if
         ! Apply the restriction
         call  p%precv(level + 1)%map_rstr(sone,vty,&
              & szero,p%precv(level + 1)%wrk%vx2l,&
@@ -940,7 +953,7 @@ contains
                & a_err='Error during prolongation')
           goto 9999
         end if
-
+        if (me >= 0) then 
           !
           ! Compute the residual
           !
@@ -974,6 +987,8 @@ contains
                  & a_err='Error during POST smoother_apply')
             goto 9999
           end if
+        end if
+
       else
 
         info = psb_err_internal_error_ 
@@ -991,7 +1006,6 @@ contains
 
   end subroutine amg_s_inner_k_cycle
   
-
   recursive subroutine amg_sinneritkcycle(p, level, trans, work, innersolv)
     use psb_base_mod
     use amg_prec_mod

amgprec/impl/amg_z_hierarchy_bld.f90

@@ -455,6 +455,31 @@ subroutine amg_z_hierarchy_bld(a,desc_a,prec,info)
     end do
   end if
 
+
+  !write(0,*) 'Should we remap? '
+  if (.true..and.(np>=4)) then
+    write(0,*) 'Going for remapping '
+    if (.true.) then 
+      associate(lv=>prec%precv(iszv), rmp => prec%precv(iszv)%remap_data)
+        call lv%desc_ac%clone(rmp%desc_ac_pre_remap,info)
+        call lv%ac%clone(rmp%ac_pre_remap,info)
+        if (np >= 8) then 
+          call psb_remap(np/4,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        else
+          call psb_remap(np/2,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
+               & rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
+        end if
+        write(0,*) me,' Out of remapping ',rmp%desc_ac_pre_remap%get_fmt(),' ',&
+             & lv%desc_ac%get_fmt(),sum(lv%linmap%naggr),sum(rmp%naggr)
+        lv%linmap%naggr(:)    =  rmp%naggr(:)
+        lv%linmap%p_desc_V => rmp%desc_ac_pre_remap
+        lv%base_a          => lv%ac
+        lv%base_desc       => lv%desc_ac
+      end associate 
+    end if
+  end if
+
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_internal_error_,name,&
          & a_err='Internal hierarchy build' )

amgprec/impl/amg_z_smoothers_bld.f90

@@ -117,6 +117,10 @@ subroutine amg_z_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   info = psb_success_
   ctxt = desc_a%get_context()
   call psb_info(ctxt, me, np)
+  if (me <0) then
+!!$    write(0,*) 'out of CTXT, should not do anything '
+    goto 9998
+  end if
 
   if (debug_level >= psb_debug_outer_) &
        & write(debug_unit,*) me,' ',trim(name),&
@@ -289,6 +293,7 @@ subroutine amg_z_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     !
     ! build the base preconditioner at level i
     !
+!!$    write(0,*) me,' Building at level ',i
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
     
     if (info /= psb_success_) then 
@@ -304,6 +309,7 @@ subroutine amg_z_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
        & write(debug_unit,*) me,' ',trim(name),&
        & 'Exiting with',iszv,' levels'
 
+9998 continue
   call psb_erractionrestore(err_act)
   return
 

amgprec/impl/amg_zmlprec_aply.f90

@@ -393,7 +393,7 @@ contains
     if(debug_level > 1) then
       write(debug_unit,*) me,' Start inner_ml_aply at level ',level, info
     end if
-
+    if (me >= 0) then
       select case(p%precv(level)%parms%ml_cycle) 
         
       case(amg_no_ml_)
@@ -426,6 +426,7 @@ contains
       if(debug_level > 1) then
         write(debug_unit,*) me,' End inner_ml_aply at level ',level
       end if
+    end if
 
     call psb_erractionrestore(err_act)
     return
@@ -492,6 +493,7 @@ contains
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv)
 
+      if (me >= 0) then 
         if (allocated(p%precv(level)%sm2a)) then
           call psb_geaxpby(zone,vx2l,zzero,vy2l,base_desc,info)
           
@@ -515,6 +517,7 @@ contains
                & base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
         end if
+      end if
       if (info /= psb_success_) then
         call psb_errpush(psb_err_internal_error_,name,&
              & a_err='Error during ADD smoother_apply')
@@ -602,7 +605,6 @@ contains
     end if
     ctxt = p%precv(level)%base_desc%get_context()
     call psb_info(ctxt, me, np)
-
     if(debug_level > 1) then
       write(debug_unit,*) me,' inner_mult at level ',level
     end if
@@ -623,6 +625,8 @@ contains
         !
 
         if (pre) then
+          if (me >=0) then
+!!$            write(0,*) me,'Applying smoother pre ', level
             if (trans == 'N') then 
               sweeps = p%precv(level)%parms%sweeps_pre
               if (info == psb_success_) call p%precv(level)%sm%apply(zone,&
@@ -640,6 +644,7 @@ contains
                    & a_err='Error during PRE smoother_apply')
               goto 9999
             end if
+          end if
         endif
         !
         ! Compute the residual for next level and call recursively
@@ -696,11 +701,13 @@ contains
 
         if (p%precv(level)%parms%ml_cycle == amg_wcycle_ml_) then
 
+          if (me >=0) then 
             call psb_geaxpby(zone,vx2l, zzero,vty,&
                  & base_desc,info)        
             if (info == psb_success_) call psb_spmm(-zone,base_a,&
                  & vy2l,zone,vty,&
                  & base_desc,info,work=work,trans=trans)
+          end if
           if (info == psb_success_) &
                & call p%precv(level+1)%map_rstr(zone,vty,&
                & zzero,p%precv(level+1)%wrk%vx2l,info,work=work,&
@@ -728,6 +735,7 @@ contains
 
 
         if (post) then
+          if (me >=0) then 
             call psb_geaxpby(zone,vx2l,&
                  & zzero,vty,&
                  & base_desc,info)
@@ -754,6 +762,7 @@ contains
                    & vty,zone,vy2l, base_desc, trans,&
                    & sweeps,work,wv,info,init='Z')
             end if
+          end if
 
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
@@ -764,11 +773,14 @@ contains
         endif
 
       else if (level == nlev) then
-
+!!$        write(0,*) me,'Applying smoother at top level ',psb_errstatus_fatal()
+        if (me >=0) then 
           sweeps = p%precv(level)%parms%sweeps_pre
           if (info == psb_success_) call p%precv(level)%sm%apply(zone,&
                & vx2l,zzero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info)
+        end if 
+!!$        write(0,*) me,' Done applying smoother at top level ',psb_errstatus_fatal()
 
       else
 
@@ -778,7 +790,7 @@ contains
         goto 9999
       end if
     end associate
-    
+9998 continue
     call psb_erractionrestore(err_act)
     return
 
@@ -847,7 +859,9 @@ contains
          & vtx => p%precv(level)%wrk%vtx,vty => p%precv(level)%wrk%vty,&
          & base_a => p%precv(level)%base_a, base_desc=>p%precv(level)%base_desc,&
          & wv => p%precv(level)%wrk%wv(8:))
+
       if (level == nlev) then 
+        if (me >= 0) then 
           !
           ! Apply smoother 
           !
@@ -855,8 +869,9 @@ contains
           if (info == psb_success_) call p%precv(level)%sm%apply(zone,&
                & vx2l,zzero,vy2l,base_desc, trans,&
                & sweeps,work,wv,info,init='Z')
-
+        end if
       else  if (level < nlev) then 
+        if (me >= 0) then 
 
           if (trans == 'N') then 
             sweeps = p%precv(level)%parms%sweeps_pre
@@ -869,14 +884,12 @@ contains
                  & vx2l,zzero,vy2l,base_desc, trans,&
                  & sweeps,work,wv,info,init='Z')
           end if
-
           if (info /= psb_success_) then
             call psb_errpush(psb_err_internal_error_,name,&
                  & a_err='Error during 2-PRE smoother_apply')
             goto 9999
           end if
 
-
           !
           ! Compute the residual and call recursively
           !
@@ -892,7 +905,7 @@ contains
                  & a_err='Error during residue')
             goto 9999
           end if
-
+        end if
         ! Apply the restriction
         call  p%precv(level + 1)%map_rstr(zone,vty,&
              & zzero,p%precv(level + 1)%wrk%vx2l,&
@@ -940,7 +953,7 @@ contains
                & a_err='Error during prolongation')
           goto 9999
         end if
-
+        if (me >= 0) then 
           !
           ! Compute the residual
           !
@@ -974,6 +987,8 @@ contains
                  & a_err='Error during POST smoother_apply')
             goto 9999
           end if
+        end if
+
       else
 
         info = psb_err_internal_error_ 
@@ -991,7 +1006,6 @@ contains
 
   end subroutine amg_z_inner_k_cycle
   
-
   recursive subroutine amg_zinneritkcycle(p, level, trans, work, innersolv)
     use psb_base_mod
     use amg_prec_mod

amgprec/impl/level/amg_c_base_onelev_build.f90

@@ -71,6 +71,14 @@ subroutine amg_c_base_onelev_build(lv,info,amold,vmold,imold,ilv)
   ctxt = lv%base_desc%get_ctxt()
   call psb_info(ctxt,me,np)
 
+  !
+  ! At top level(s) I may be using
+  ! a context with less processes
+  !
+  if (me < 0) then
+!!$    write(0,*) 'onelevbld: I am excluded from this one '
+  else
+!!$    write(0,*) me,' Going to build smoothers at this level '
     if (.not.allocated(lv%sm)) then 
       !! Error: should have called amg_dprecinit
       info=3111
@@ -140,6 +148,7 @@ subroutine amg_c_base_onelev_build(lv,info,amold,vmold,imold,ilv)
         end if
       end if
     end if
+  end if
   
   if (any((/present(amold),present(vmold),present(imold)/))) &
        & call lv%cnv(info,amold=amold,vmold=vmold,imold=imold)

amgprec/impl/level/amg_c_base_onelev_map_prol.F90

@@ -47,11 +47,61 @@ subroutine amg_c_base_onelev_map_prol_v(lv,alpha,vect_v,beta,vect_u,info,work,vt
   complex(psb_spk_), optional          :: work(:)
   type(psb_c_vect_type), optional, target, intent(inout)  :: vtx,vty
   
+!!$  write(0,*) 'New map_prol',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling '
+    block
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip,idest, nsrc, nrl, nrc, kp
+      integer(psb_ipk_) :: me, np,  rme, rnp
+      complex(psb_spk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_c_vect_type) :: tv
+
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      call psb_info(ctxt,me,np)
+!!$      write(0,*) 'Old context ',me,np,psb_errstatus_fatal()
+      nctxt = lv%desc_ac%get_ctxt()
+      call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp,psb_errstatus_fatal()
+      idest = lv%remap_data%idest
+      associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
+!!$        write(0,*) 'Should apply maps, then receive data from ',idest,' to ',me,psb_errstatus_fatal()
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        nrc  = lv%remap_data%desc_ac_pre_remap%get_local_cols()
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+          rrcv   = vect_v%get_vect()
+!!$          write(0,*) me,rme,' Size check ',size(rrcv),lv%desc_ac%get_local_rows(),psb_errstatus_fatal()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Sending to ',ip,nrl,kp+1,kp+nrl
+            call psb_snd(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+        end if
+        nrl = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+!!$        write(0,*) me, ' Allocated ',nrl,info,psb_errstatus_fatal()
+        
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',nrl,tv%get_nrows(),info
+!!$        write(0,*) me,' Receiving from ',idest,nrl,psb_errstatus_fatal()
+        call psb_realloc(nrc,rsnd,info)
+        call psb_rcv(ctxt,rsnd(1:nrl),idest)
+        call tv%set_vect(rsnd)
+        call lv%linmap%map_V2U(alpha,tv,beta,vect_u,info,&
+             & work=work,vtx=vtx,vty=vty)
+      end associate
+!!$      write(0,*) me, ' Prolongator with remap done '
+!!$      flush(0)
+!!$      call psb_barrier(ctxt)
+    end block
   else
     ! Default transfer
     call lv%linmap%map_V2U(alpha,vect_v,beta,vect_u,info,&

amgprec/impl/level/amg_c_base_onelev_map_rstr.F90

@@ -36,7 +36,8 @@
 !   
 !  
 
-subroutine amg_c_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vtx,vty)
+subroutine amg_c_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,&
+     &  work,vtx,vty)
   use psb_base_mod
   use amg_c_onelev_mod, amg_protect_name =>  amg_c_base_onelev_map_rstr_v
   implicit none
@@ -47,24 +48,52 @@ subroutine amg_c_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vt
   complex(psb_spk_), optional          :: work(:)
   type(psb_c_vect_type), optional, target, intent(inout)  :: vtx,vty
 
+!!$  write(0,*) 'New map_rstr',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling not implemented yet '
     block
-      integer(psb_ipk_) :: i,j,ip,nctxt,ictxt, idest
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip, idest, nsrc, nrl, kp
       integer(psb_ipk_) :: me, np,  rme, rnp
+      complex(psb_spk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_c_vect_type) :: tv
       
-      ictxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
-      call psb_info(ictxt,me,np)
+      call psb_info(ctxt,me,np)
       nctxt = lv%desc_ac%get_ctxt()
       call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp
       idest = lv%remap_data%idest
       associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
-        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
+!!$        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
-        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)        
+!!$        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',tv%get_nrows()
+        call lv%linmap%map_U2V(alpha,vect_u,beta,tv,info,&
+             & work=work,vtx=vtx,vty=vty)
+        rsnd = tv%get_vect()
+        call psb_snd(ctxt,rsnd(1:nrl),idest)
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+!!$          write(0,*) me,rme,' Size check ',size(rrcv)!,lv%desc_ac%get_local_rows()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Receiving from ',ip,nrl,kp+1,kp+nrl,size(rrcv)
+            call psb_rcv(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+          call vect_v%set_vect(rrcv)
+        end if
       end associate
+!!$      write(0,*) me, ' Restrictor with remap done '
     end block
  
   else

amgprec/impl/level/amg_d_base_onelev_build.f90

@@ -71,6 +71,14 @@ subroutine amg_d_base_onelev_build(lv,info,amold,vmold,imold,ilv)
   ctxt = lv%base_desc%get_ctxt()
   call psb_info(ctxt,me,np)
 
+  !
+  ! At top level(s) I may be using
+  ! a context with less processes
+  !
+  if (me < 0) then
+!!$    write(0,*) 'onelevbld: I am excluded from this one '
+  else
+!!$    write(0,*) me,' Going to build smoothers at this level '
     if (.not.allocated(lv%sm)) then 
       !! Error: should have called amg_dprecinit
       info=3111
@@ -140,6 +148,7 @@ subroutine amg_d_base_onelev_build(lv,info,amold,vmold,imold,ilv)
         end if
       end if
     end if
+  end if
   
   if (any((/present(amold),present(vmold),present(imold)/))) &
        & call lv%cnv(info,amold=amold,vmold=vmold,imold=imold)

amgprec/impl/level/amg_d_base_onelev_map_prol.F90

@@ -47,11 +47,61 @@ subroutine amg_d_base_onelev_map_prol_v(lv,alpha,vect_v,beta,vect_u,info,work,vt
   real(psb_dpk_), optional          :: work(:)
   type(psb_d_vect_type), optional, target, intent(inout)  :: vtx,vty
   
+!!$  write(0,*) 'New map_prol',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling '
+    block
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip,idest, nsrc, nrl, nrc, kp
+      integer(psb_ipk_) :: me, np,  rme, rnp
+      real(psb_dpk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_d_vect_type) :: tv
+
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      call psb_info(ctxt,me,np)
+!!$      write(0,*) 'Old context ',me,np,psb_errstatus_fatal()
+      nctxt = lv%desc_ac%get_ctxt()
+      call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp,psb_errstatus_fatal()
+      idest = lv%remap_data%idest
+      associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
+!!$        write(0,*) 'Should apply maps, then receive data from ',idest,' to ',me,psb_errstatus_fatal()
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        nrc  = lv%remap_data%desc_ac_pre_remap%get_local_cols()
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+          rrcv   = vect_v%get_vect()
+!!$          write(0,*) me,rme,' Size check ',size(rrcv),lv%desc_ac%get_local_rows(),psb_errstatus_fatal()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Sending to ',ip,nrl,kp+1,kp+nrl
+            call psb_snd(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+        end if
+        nrl = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+!!$        write(0,*) me, ' Allocated ',nrl,info,psb_errstatus_fatal()
+        
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',nrl,tv%get_nrows(),info
+!!$        write(0,*) me,' Receiving from ',idest,nrl,psb_errstatus_fatal()
+        call psb_realloc(nrc,rsnd,info)
+        call psb_rcv(ctxt,rsnd(1:nrl),idest)
+        call tv%set_vect(rsnd)
+        call lv%linmap%map_V2U(alpha,tv,beta,vect_u,info,&
+             & work=work,vtx=vtx,vty=vty)
+      end associate
+!!$      write(0,*) me, ' Prolongator with remap done '
+!!$      flush(0)
+!!$      call psb_barrier(ctxt)
+    end block
   else
     ! Default transfer
     call lv%linmap%map_V2U(alpha,vect_v,beta,vect_u,info,&

amgprec/impl/level/amg_d_base_onelev_map_rstr.F90

@@ -36,7 +36,8 @@
 !   
 !  
 
-subroutine amg_d_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vtx,vty)
+subroutine amg_d_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,&
+     &  work,vtx,vty)
   use psb_base_mod
   use amg_d_onelev_mod, amg_protect_name =>  amg_d_base_onelev_map_rstr_v
   implicit none
@@ -47,24 +48,52 @@ subroutine amg_d_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vt
   real(psb_dpk_), optional          :: work(:)
   type(psb_d_vect_type), optional, target, intent(inout)  :: vtx,vty
 
+!!$  write(0,*) 'New map_rstr',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling not implemented yet '
     block
-      integer(psb_ipk_) :: i,j,ip,nctxt,ictxt, idest
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip, idest, nsrc, nrl, kp
       integer(psb_ipk_) :: me, np,  rme, rnp
+      real(psb_dpk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_d_vect_type) :: tv
       
-      ictxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
-      call psb_info(ictxt,me,np)
+      call psb_info(ctxt,me,np)
       nctxt = lv%desc_ac%get_ctxt()
       call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp
       idest = lv%remap_data%idest
       associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
-        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
+!!$        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
-        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)        
+!!$        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',tv%get_nrows()
+        call lv%linmap%map_U2V(alpha,vect_u,beta,tv,info,&
+             & work=work,vtx=vtx,vty=vty)
+        rsnd = tv%get_vect()
+        call psb_snd(ctxt,rsnd(1:nrl),idest)
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+!!$          write(0,*) me,rme,' Size check ',size(rrcv)!,lv%desc_ac%get_local_rows()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Receiving from ',ip,nrl,kp+1,kp+nrl,size(rrcv)
+            call psb_rcv(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+          call vect_v%set_vect(rrcv)
+        end if
       end associate
+!!$      write(0,*) me, ' Restrictor with remap done '
     end block
  
   else

amgprec/impl/level/amg_s_base_onelev_build.f90

@@ -71,6 +71,14 @@ subroutine amg_s_base_onelev_build(lv,info,amold,vmold,imold,ilv)
   ctxt = lv%base_desc%get_ctxt()
   call psb_info(ctxt,me,np)
 
+  !
+  ! At top level(s) I may be using
+  ! a context with less processes
+  !
+  if (me < 0) then
+!!$    write(0,*) 'onelevbld: I am excluded from this one '
+  else
+!!$    write(0,*) me,' Going to build smoothers at this level '
     if (.not.allocated(lv%sm)) then 
       !! Error: should have called amg_dprecinit
       info=3111
@@ -140,6 +148,7 @@ subroutine amg_s_base_onelev_build(lv,info,amold,vmold,imold,ilv)
         end if
       end if
     end if
+  end if
   
   if (any((/present(amold),present(vmold),present(imold)/))) &
        & call lv%cnv(info,amold=amold,vmold=vmold,imold=imold)

amgprec/impl/level/amg_s_base_onelev_map_prol.F90

@@ -47,11 +47,61 @@ subroutine amg_s_base_onelev_map_prol_v(lv,alpha,vect_v,beta,vect_u,info,work,vt
   real(psb_spk_), optional          :: work(:)
   type(psb_s_vect_type), optional, target, intent(inout)  :: vtx,vty
   
+!!$  write(0,*) 'New map_prol',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling '
+    block
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip,idest, nsrc, nrl, nrc, kp
+      integer(psb_ipk_) :: me, np,  rme, rnp
+      real(psb_spk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_s_vect_type) :: tv
+
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      call psb_info(ctxt,me,np)
+!!$      write(0,*) 'Old context ',me,np,psb_errstatus_fatal()
+      nctxt = lv%desc_ac%get_ctxt()
+      call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp,psb_errstatus_fatal()
+      idest = lv%remap_data%idest
+      associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
+!!$        write(0,*) 'Should apply maps, then receive data from ',idest,' to ',me,psb_errstatus_fatal()
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        nrc  = lv%remap_data%desc_ac_pre_remap%get_local_cols()
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+          rrcv   = vect_v%get_vect()
+!!$          write(0,*) me,rme,' Size check ',size(rrcv),lv%desc_ac%get_local_rows(),psb_errstatus_fatal()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Sending to ',ip,nrl,kp+1,kp+nrl
+            call psb_snd(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+        end if
+        nrl = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+!!$        write(0,*) me, ' Allocated ',nrl,info,psb_errstatus_fatal()
+        
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',nrl,tv%get_nrows(),info
+!!$        write(0,*) me,' Receiving from ',idest,nrl,psb_errstatus_fatal()
+        call psb_realloc(nrc,rsnd,info)
+        call psb_rcv(ctxt,rsnd(1:nrl),idest)
+        call tv%set_vect(rsnd)
+        call lv%linmap%map_V2U(alpha,tv,beta,vect_u,info,&
+             & work=work,vtx=vtx,vty=vty)
+      end associate
+!!$      write(0,*) me, ' Prolongator with remap done '
+!!$      flush(0)
+!!$      call psb_barrier(ctxt)
+    end block
   else
     ! Default transfer
     call lv%linmap%map_V2U(alpha,vect_v,beta,vect_u,info,&

amgprec/impl/level/amg_s_base_onelev_map_rstr.F90

@@ -36,7 +36,8 @@
 !   
 !  
 
-subroutine amg_s_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vtx,vty)
+subroutine amg_s_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,&
+     &  work,vtx,vty)
   use psb_base_mod
   use amg_s_onelev_mod, amg_protect_name =>  amg_s_base_onelev_map_rstr_v
   implicit none
@@ -47,24 +48,52 @@ subroutine amg_s_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vt
   real(psb_spk_), optional          :: work(:)
   type(psb_s_vect_type), optional, target, intent(inout)  :: vtx,vty
 
+!!$  write(0,*) 'New map_rstr',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling not implemented yet '
     block
-      integer(psb_ipk_) :: i,j,ip,nctxt,ictxt, idest
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip, idest, nsrc, nrl, kp
       integer(psb_ipk_) :: me, np,  rme, rnp
+      real(psb_spk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_s_vect_type) :: tv
       
-      ictxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
-      call psb_info(ictxt,me,np)
+      call psb_info(ctxt,me,np)
       nctxt = lv%desc_ac%get_ctxt()
       call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp
       idest = lv%remap_data%idest
       associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
-        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
+!!$        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
-        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)        
+!!$        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',tv%get_nrows()
+        call lv%linmap%map_U2V(alpha,vect_u,beta,tv,info,&
+             & work=work,vtx=vtx,vty=vty)
+        rsnd = tv%get_vect()
+        call psb_snd(ctxt,rsnd(1:nrl),idest)
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+!!$          write(0,*) me,rme,' Size check ',size(rrcv)!,lv%desc_ac%get_local_rows()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Receiving from ',ip,nrl,kp+1,kp+nrl,size(rrcv)
+            call psb_rcv(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+          call vect_v%set_vect(rrcv)
+        end if
       end associate
+!!$      write(0,*) me, ' Restrictor with remap done '
     end block
  
   else

amgprec/impl/level/amg_z_base_onelev_build.f90

@@ -71,6 +71,14 @@ subroutine amg_z_base_onelev_build(lv,info,amold,vmold,imold,ilv)
   ctxt = lv%base_desc%get_ctxt()
   call psb_info(ctxt,me,np)
 
+  !
+  ! At top level(s) I may be using
+  ! a context with less processes
+  !
+  if (me < 0) then
+!!$    write(0,*) 'onelevbld: I am excluded from this one '
+  else
+!!$    write(0,*) me,' Going to build smoothers at this level '
     if (.not.allocated(lv%sm)) then 
       !! Error: should have called amg_dprecinit
       info=3111
@@ -140,6 +148,7 @@ subroutine amg_z_base_onelev_build(lv,info,amold,vmold,imold,ilv)
         end if
       end if
     end if
+  end if
   
   if (any((/present(amold),present(vmold),present(imold)/))) &
        & call lv%cnv(info,amold=amold,vmold=vmold,imold=imold)

amgprec/impl/level/amg_z_base_onelev_map_prol.F90

@@ -47,11 +47,61 @@ subroutine amg_z_base_onelev_map_prol_v(lv,alpha,vect_v,beta,vect_u,info,work,vt
   complex(psb_dpk_), optional          :: work(:)
   type(psb_z_vect_type), optional, target, intent(inout)  :: vtx,vty
   
+!!$  write(0,*) 'New map_prol',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling '
+    block
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip,idest, nsrc, nrl, nrc, kp
+      integer(psb_ipk_) :: me, np,  rme, rnp
+      complex(psb_dpk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_z_vect_type) :: tv
+
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      call psb_info(ctxt,me,np)
+!!$      write(0,*) 'Old context ',me,np,psb_errstatus_fatal()
+      nctxt = lv%desc_ac%get_ctxt()
+      call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp,psb_errstatus_fatal()
+      idest = lv%remap_data%idest
+      associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
+!!$        write(0,*) 'Should apply maps, then receive data from ',idest,' to ',me,psb_errstatus_fatal()
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        nrc  = lv%remap_data%desc_ac_pre_remap%get_local_cols()
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+          rrcv   = vect_v%get_vect()
+!!$          write(0,*) me,rme,' Size check ',size(rrcv),lv%desc_ac%get_local_rows(),psb_errstatus_fatal()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Sending to ',ip,nrl,kp+1,kp+nrl
+            call psb_snd(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+        end if
+        nrl = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+!!$        write(0,*) me, ' Allocated ',nrl,info,psb_errstatus_fatal()
+        
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',nrl,tv%get_nrows(),info
+!!$        write(0,*) me,' Receiving from ',idest,nrl,psb_errstatus_fatal()
+        call psb_realloc(nrc,rsnd,info)
+        call psb_rcv(ctxt,rsnd(1:nrl),idest)
+        call tv%set_vect(rsnd)
+        call lv%linmap%map_V2U(alpha,tv,beta,vect_u,info,&
+             & work=work,vtx=vtx,vty=vty)
+      end associate
+!!$      write(0,*) me, ' Prolongator with remap done '
+!!$      flush(0)
+!!$      call psb_barrier(ctxt)
+    end block
   else
     ! Default transfer
     call lv%linmap%map_V2U(alpha,vect_v,beta,vect_u,info,&

amgprec/impl/level/amg_z_base_onelev_map_rstr.F90

@@ -36,7 +36,8 @@
 !   
 !  
 
-subroutine amg_z_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vtx,vty)
+subroutine amg_z_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,&
+     &  work,vtx,vty)
   use psb_base_mod
   use amg_z_onelev_mod, amg_protect_name =>  amg_z_base_onelev_map_rstr_v
   implicit none
@@ -47,24 +48,52 @@ subroutine amg_z_base_onelev_map_rstr_v(lv,alpha,vect_u,beta,vect_v,info,work,vt
   complex(psb_dpk_), optional          :: work(:)
   type(psb_z_vect_type), optional, target, intent(inout)  :: vtx,vty
 
+!!$  write(0,*) 'New map_rstr',lv%remap_data%ac_pre_remap%is_asb()
   if (lv%remap_data%ac_pre_remap%is_asb()) then
     !
     ! Remap has happened, deal with it
     !
-    write(0,*) 'Remap handling not implemented yet '
+!!$    write(0,*) 'Remap handling not implemented yet '
     block
-      integer(psb_ipk_) :: i,j,ip,nctxt,ictxt, idest
+      type(psb_ctxt_type) :: ctxt, nctxt
+      integer(psb_ipk_) :: i,j,ip, idest, nsrc, nrl, kp
       integer(psb_ipk_) :: me, np,  rme, rnp
+      complex(psb_dpk_), allocatable :: rsnd(:), rrcv(:)
+      type(psb_z_vect_type) :: tv
       
-      ictxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
+      ctxt = lv%remap_data%desc_ac_pre_remap%get_ctxt()
-      call psb_info(ictxt,me,np)
+      call psb_info(ctxt,me,np)
       nctxt = lv%desc_ac%get_ctxt()
       call psb_info(nctxt,rme,rnp)
+!!$      write(0,*) 'New context ',rme,rnp
       idest = lv%remap_data%idest
       associate(isrc => lv%remap_data%isrc, nrsrc => lv%remap_data%nrsrc)
-        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
+!!$        write(0,*) 'Should apply maps, then send data from ',me,' to ',idest
-        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)        
+!!$        if (rme >= 0) write(0,*) rme, '  Receiving      data from ',isrc(:)
+        nsrc = size(isrc)
+        nrl  = lv%remap_data%desc_ac_pre_remap%get_local_rows()
+        call psb_geall(tv,lv%remap_data%desc_ac_pre_remap,info)
+        call psb_geasb(tv,lv%remap_data%desc_ac_pre_remap,info) 
+!!$        write(0,*) me,' Size of TV ',tv%get_nrows()
+        call lv%linmap%map_U2V(alpha,vect_u,beta,tv,info,&
+             & work=work,vtx=vtx,vty=vty)
+        rsnd = tv%get_vect()
+        call psb_snd(ctxt,rsnd(1:nrl),idest)
+        if (rme >=0) then
+          allocate(rrcv(sum(nrsrc)))
+!!$          write(0,*) me,rme,' Size check ',size(rrcv)!,lv%desc_ac%get_local_rows()
+          kp = 0
+          do i = 1,size(isrc)
+            ip = isrc(i)
+            nrl = nrsrc(i)
+!!$            write(0,*) me,' Receiving from ',ip,nrl,kp+1,kp+nrl,size(rrcv)
+            call psb_rcv(ctxt,rrcv(kp+1:kp+nrl),ip)
+            kp = kp + nrl
+          end do
+          call vect_v%set_vect(rrcv)
+        end if
       end associate
+!!$      write(0,*) me, ' Restrictor with remap done '
     end block
  
   else