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Add a description at the top of lp files

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This commit is contained in:
Massimiliano Culpo
2023-08-14 11:39:15 +02:00
committed by Todd Gamblin
parent f69c18a922
commit fb83f8ef31
4 changed files with 22 additions and 2 deletions
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10
lib/spack/spack/solver/cycle_detection.lp
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@@ -3,9 +3,15 @@
%
% SPDX-License-Identifier: (Apache-2.0 OR MIT)
%=============================================================================
% Avoid cycles in the DAG
% some combinations of conditional dependencies can result in cycles;
% this ensures that we solve around them
%
% Some combinations of conditional dependencies can result in cycles;
% this ensures that we solve around them. Note that these rules are quite
% demanding on both grounding and solving, since they need to compute and
% consider all possible paths between pair of nodes.
%=============================================================================
#program no_cycle.
path(Parent, Child) :- depends_on(Parent, Child).

5
lib/spack/spack/solver/heuristic.lp
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@@ -3,6 +3,11 @@
%
% SPDX-License-Identifier: (Apache-2.0 OR MIT)
%=============================================================================
% Heuristic to speed-up solves
%=============================================================================
%-----------------
% Domain heuristic
%-----------------

2
lib/spack/spack/solver/os_compatibility.lp
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@@ -3,9 +3,11 @@
%
% SPDX-License-Identifier: (Apache-2.0 OR MIT)
%=============================================================================
% OS compatibility rules for reusing solves.
% os_compatible(RecentOS, OlderOS)
% OlderOS binaries can be used on RecentOS
%=============================================================================
% macOS
os_compatible("monterey", "bigsur").

7
lib/spack/spack/solver/when_possible.lp
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@@ -3,6 +3,13 @@
%
% SPDX-License-Identifier: (Apache-2.0 OR MIT)
%=============================================================================
% Minimize the number of literals that are not solved
%
% This minimization is used for the "when_possible" concretization mode,
% otherwise we assume that all literals must be solved.
%=============================================================================
% Give clingo the choice to solve an input spec or not
{ solve_literal(ID) } :- literal(ID).
literal_not_solved(ID) :- not solve_literal(ID), literal(ID).