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Heuristic decays to default over time (#45023)

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This modifies heuristic to decay to clingo default
over time. The hope is that this helps with specs
that have an optimal solution with a high penalty.

Let target and compiler heuristic decay too, do not
guess compiler
This commit is contained in:
Massimiliano Culpo 2024-07-04 08:19:52 +02:00 committed by Harmen Stoppels
parent a3cef0f02e
commit cba347e0b7
2 changed files with 15 additions and 11 deletions
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2
lib/spack/spack/solver/asp.py
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@ -95,7 +95,7 @@ def default_clingo_control():
control = clingo().Control() control = clingo().Control()
control.configuration.configuration = "tweety" control.configuration.configuration = "tweety"
control.configuration.solver.heuristic = "Domain" control.configuration.solver.heuristic = "Domain"
control.configuration.solver.opt_strategy = "usc,one,1" control.configuration.solver.opt_strategy = "usc,one"
return control return control

24
lib/spack/spack/solver/heuristic.lp
View file

@ -8,13 +8,17 @@
%============================================================================= %=============================================================================
% No duplicates by default (most of them will be true) % No duplicates by default (most of them will be true)
#heuristic attr("node", node(1..X-1, Package)) : max_dupes(Package, X), not virtual(Package), X > 1. [100, false] #heuristic attr("node", node(PackageID, Package)). [100, init]
#heuristic attr("virtual_node", node(1..X-1, Package)) : max_dupes(Package, X), virtual(Package) , X > 1. [100, false] #heuristic attr("node", node(PackageID, Package)). [ 2, factor]
#heuristic attr("virtual_node", node(VirtualID, Virtual)). [100, init]
#heuristic attr("node", node(1..X-1, Package)) : max_dupes(Package, X), not virtual(Package), X > 1. [-1, sign]
#heuristic attr("virtual_node", node(1..X-1, Package)) : max_dupes(Package, X), virtual(Package) , X > 1. [-1, sign]
% Pick preferred version % Pick preferred version
#heuristic attr("version", node(PackageID, Package), Version) : pkg_fact(Package, version_declared(Version, 0 )), attr("node", node(PackageID, Package)). [40, true] #heuristic attr("version", node(PackageID, Package), Version) : pkg_fact(Package, version_declared(Version, Weight)), attr("node", node(PackageID, Package)). [40, init]
#heuristic attr("version", node(PackageID, Package), Version) : pkg_fact(Package, version_declared(Version, Weight)), attr("node", node(PackageID, Package)), Weight > 0. [40+5*Weight, false] #heuristic version_weight(node(PackageID, Package), 0) : pkg_fact(Package, version_declared(Version, 0 )), attr("node", node(PackageID, Package)). [ 1, sign]
#heuristic version_weight(node(PackageID, Package), 0) : pkg_fact(Package, version_declared(Version, 0 )), attr("node", node(PackageID, Package)). [40, true] #heuristic attr("version", node(PackageID, Package), Version) : pkg_fact(Package, version_declared(Version, 0 )), attr("node", node(PackageID, Package)). [ 1, sign]
#heuristic attr("version", node(PackageID, Package), Version) : pkg_fact(Package, version_declared(Version, Weight)), attr("node", node(PackageID, Package)), Weight > 0. [-1, sign]
% Use default variants % Use default variants
#heuristic attr("variant_value", node(PackageID, Package), Variant, Value) : variant_default_value(Package, Variant, Value), attr("node", node(PackageID, Package)). [40, true] #heuristic attr("variant_value", node(PackageID, Package), Variant, Value) : variant_default_value(Package, Variant, Value), attr("node", node(PackageID, Package)). [40, true]
@ -25,10 +29,10 @@
#heuristic attr("node_platform", node(PackageID, Package), Platform) : allowed_platform(Platform), attr("root", node(PackageID, Package)). [40, true] #heuristic attr("node_platform", node(PackageID, Package), Platform) : allowed_platform(Platform), attr("root", node(PackageID, Package)). [40, true]
% Use default targets % Use default targets
#heuristic attr("node_target", node(PackageID, Package), Target) : target_weight(Target, 0), attr("node", node(PackageID, Package)). [30, true] #heuristic attr("node_target", node(PackageID, Package), Target) : target_weight(Target, Weight), attr("node", node(PackageID, Package)). [30, init]
#heuristic attr("node_target", node(PackageID, Package), Target) : target_weight(Target, Weight), attr("node", node(PackageID, Package)), Weight > 0. [30, false] #heuristic attr("node_target", node(PackageID, Package), Target) : target_weight(Target, Weight), attr("node", node(PackageID, Package)). [ 2, factor]
#heuristic node_target_weight(node(PackageID, Package), 0) : attr("node", node(PackageID, Package)). [30, true] #heuristic attr("node_target", node(PackageID, Package), Target) : target_weight(Target, 0), attr("node", node(PackageID, Package)). [ 1, sign]
#heuristic attr("node_target", node(PackageID, Package), Target) : target_weight(Target, Weight), attr("node", node(PackageID, Package)), Weight > 0. [-1, sign]
% Use the default compilers % Use the default compilers
#heuristic node_compiler(node(0, Package), ID) : compiler_weight(ID, 0) , compiler_id(ID), attr("node", node(0, Package)). [30, true] #heuristic node_compiler(node(PackageID, Package), ID) : compiler_weight(ID, 0), compiler_id(ID), attr("node", node(PackageID, Package)). [30, init]
#heuristic node_compiler(node(0, Package), ID) : compiler_weight(ID, Weight), compiler_id(ID), attr("node", node(0, Package)), Weight > 0. [30, false]