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psblas3-type-indexed
Salvatore Filippone 18 years ago
parent 386ba10060
commit 83213e1fc5
1 changed files with 4 additions and 4 deletions
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8
base/modules/psb_desc_type.f90
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@ -107,7 +107,7 @@ module psb_descriptor_type
! very much linked to building a sparse matrix (since the matrix sparsity ! very much linked to building a sparse matrix (since the matrix sparsity
! pattern embodies the topology of the discretization graph). ! pattern embodies the topology of the discretization graph).
! !
! Most general info about the descriptor is stored in the matrix_dataq ! Most general info about the descriptor is stored in the matrix_data
! component, including the STATE which can be PSB_DESC_BLD_, ! component, including the STATE which can be PSB_DESC_BLD_,
! PSB_DESC_ASB_ or PSB_DESC_REPL_. ! PSB_DESC_ASB_ or PSB_DESC_REPL_.
! Upon allocation with PSB_CDALL the descriptor enters the BLD state; ! Upon allocation with PSB_CDALL the descriptor enters the BLD state;
@ -153,8 +153,8 @@ module psb_descriptor_type
! will thus be N_COL + N_GLOB ! will thus be N_COL + N_GLOB
! ii. If the global index space is very large (larger than the threshold value ! ii. If the global index space is very large (larger than the threshold value
! which may be set by the user), then it is not advisable to have such an ! which may be set by the user), then it is not advisable to have such an
! array; thus we only record the global indices that do have a ! array. In this case we only record the global indices that do have a
! local counterpart. Thus the local storage will be proportional to ! local counterpart, so that the local storage will be proportional to
! N_COL. During the build phase we keep the known global indices in an ! N_COL. During the build phase we keep the known global indices in an
! AVL tree data structure whose pointer is stored in ptree(:), so that we ! AVL tree data structure whose pointer is stored in ptree(:), so that we
! can do both search and insertions in log time. At assembly time, we move ! can do both search and insertions in log time. At assembly time, we move
@ -205,7 +205,7 @@ module psb_descriptor_type
! as we go about building the sparse matrix pattern, and we want the build ! as we go about building the sparse matrix pattern, and we want the build
! phase to be loosely synchronized. Thus we record the indices we have to ask ! phase to be loosely synchronized. Thus we record the indices we have to ask
! for, and at the time we call PSB_CDASB we match all the requests to figure ! for, and at the time we call PSB_CDASB we match all the requests to figure
! out who should be sending what. ! out who should be sending what to whom.
! However this implies that we know who owns the indices; if we are in the ! However this implies that we know who owns the indices; if we are in the
! LARGE case (as described above) this is actually only true for the OVERLAP list ! LARGE case (as described above) this is actually only true for the OVERLAP list
! that is filled in at CDALL time, and not for the HALO; thus the HALO list ! that is filled in at CDALL time, and not for the HALO; thus the HALO list

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