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ASP-based solver: allow configuring target selection (#29835)

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* ASP-based solver: allow configuring target selection

This commit adds a new "concretizer:targets" configuration
section, and two options under it.

 - "concretizer:targets:granularity" allows switching from
considering only generic targets to consider all possible
microarchitectures.

 - "concretizer:targets:host_compatible" instead controls
whether we can concretize for microarchitectures that
are incompatible with the current host.

* Add documentation

* Add unit-tests
This commit is contained in:
Massimiliano Culpo
2022-04-26 02:19:51 +02:00
committed by GitHub
parent 834f8e04ca
commit b9d6a5103d
6 changed files with 162 additions and 43 deletions
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13
etc/spack/defaults/concretizer.yaml
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@@ -15,3 +15,16 @@ concretizer:
# as possible, rather than building. If `false`, we'll always give you a fresh
# concretization.
reuse: false
# Options that tune which targets are considered for concretization. The
# concretization process is very sensitive to the number targets, and the time
# needed to reach a solution increases noticeably with the number of targets
# considered.
targets:
# Determine whether we want to target specific or generic microarchitectures.
# An example of the first kind might be for instance "skylake" or "bulldozer",
# while generic microarchitectures are for instance "aarch64" or "x86_64_v4".
granularity: microarchitectures
# If "false" allow targets that are incompatible with the current host (for
# instance concretize with target "icelake" while running on "haswell").
# If "true" only allow targets that are compatible with the host.
host_compatible: false