Unconstrained Refinement

CMakeLists.txt

@@ -147,6 +147,7 @@ include_directories(SYSTEM ${gtest_SOURCE_DIR}/../googlemock/include ${gtest_SOU
 include_directories(external_tools/kahypar-shared-resources)
 include_directories(external_tools/growt)
 include_directories(external_tools/WHFC)
+include_directories(external_tools/pcg)
 
 if(KAHYPAR_DOWNLOAD_BOOST)
   # Download Boost

README.md

@@ -489,7 +489,7 @@ If you use Mt-KaHyPar in an academic setting please cite the appropriate papers.
     @inproceedings{MT-KAHYPAR-SDET,
       author    = {Lars Gottesb{\"{u}}ren and
                    Michael Hamann},
-      title     = {{Deterministic Parallel Hypergraph Partitioning}},
+      title     = {Deterministic Parallel Hypergraph Partitioning},
       booktitle = {European Conference on Parallel Processing (Euro-Par)},
       volume    = {13440},
       pages     = {301--316},
@@ -498,6 +498,17 @@ If you use Mt-KaHyPar in an academic setting please cite the appropriate papers.
       doi       = {10.1007/978-3-031-12597-3\_19},
     }
 
+    // Unconstrained Refinement (Under Review)
+    @article{MT-KAHYPAR-UNCONSTRAINED,
+      title       = {Parallel Unconstrained Local Search for Partitioning Irregular Graphs},
+      author      = {Nikolai Maas and
+                     Lars Gottesb{\"{u}}ren and
+                     Daniel Seemaier},
+      institution = {Karlsruhe Institute of Technology},
+      year        = {2023},
+      url         = {https://arxiv.org/abs/2308.15494}
+    }
+
     // Dissertation of Lars Gottesbüren
     @phdthesis{MT-KAHYPAR-DIS-GOTTESBUEREN,
       author         = {Lars Gottesb\"{u}ren},
@@ -523,11 +534,11 @@ If you use Mt-KaHyPar in an academic setting please cite the appropriate papers.
       title       = {Scalable High-Quality Hypergraph Partitioning},
       author      = {Lars Gottesb{\"u}ren and
                      Tobias Heuer and
-                     Nikolai Mass and
+                     Nikolai Maas and
                      Peter Sanders and
                      Sebastian Schlag},
       institution = {Karlsruhe Institute of Technology},
-      year        = {2023}
+      year        = {2023},
       url         = {https://arxiv.org/abs/2303.17679}
     }
 

config/default_preset.ini

@@ -57,22 +57,29 @@ i-r-fm-iter-moves-on-recalc=true
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=false
 # main -> refinement -> label_propagation
 r-lp-type=label_propagation
+r-lp-unconstrained=true
 r-lp-maximum-iterations=5
-r-lp-rebalancing=true
+r-lp-rebalancing=false
 r-lp-he-size-activation-threshold=100
+r-lp-relative-improvement-threshold=0.001
 # main -> refinement -> fm
-r-fm-type=kway_fm
+r-fm-type=unconstrained
 r-fm-multitry-rounds=10
+r-fm-unconstrained-rounds=8
 r-fm-perform-moves-global=false
 r-fm-rollback-parallel=true
-r-fm-rollback-balance-violation-factor=1.25
+r-fm-rollback-balance-violation-factor=1.0
+r-fm-threshold-border-node-inclusion=0.7
+r-fm-imbalance-penalty-min=0.2
+r-fm-imbalance-penalty-max=1.0
 r-fm-seed-nodes=25
 r-fm-release-nodes=true
 r-fm-min-improvement=-1.0
+r-fm-unconstrained-min-improvement=0.002
 r-fm-obey-minimal-parallelism=true
 r-fm-time-limit-factor=0.25
 r-fm-iter-moves-on-recalc=true

config/deterministic_preset.ini

@@ -40,7 +40,7 @@ i-fm-refinement-rounds=3
 i-lp-maximum-iterations=20
 i-lp-initial-block-size=5
 # main -> initial_partitioning -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 i-r-refine-until-no-improvement=false
 # main -> initial_partitioning -> refinement -> label_propagation
 i-r-lp-type=deterministic

config/highest_quality_preset.ini

@@ -62,7 +62,7 @@ i-r-use-global-fm=false
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=true
 r-relative-improvement-threshold=0.0025
 r-max-batch-size=1000

config/large_k_preset.ini

@@ -58,7 +58,7 @@ i-r-fm-type=do_nothing
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=false
 # main -> refinement -> label_propagation
 r-lp-type=label_propagation

config/old_configs/default_flow_preset.ini

@@ -58,7 +58,7 @@ i-r-fm-iter-moves-on-recalc=true
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=true
 r-relative-improvement-threshold=0.0025
 # main -> refinement -> label_propagation

config/old_configs/default_preset.ini

@@ -57,7 +57,7 @@ i-r-fm-iter-moves-on-recalc=true
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=false
 # main -> refinement -> label_propagation
 r-lp-type=label_propagation

config/old_configs/quality_flow_preset.ini

@@ -62,7 +62,7 @@ i-r-use-global-fm=false
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=true
 r-relative-improvement-threshold=0.0025
 r-max-batch-size=1000

config/old_configs/quality_preset.ini

@@ -61,7 +61,7 @@ i-r-flow-algo=do_nothing
 # main -> initial_partitioning -> refinement -> global fm
 i-r-use-global-fm=false
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=true
 r-max-batch-size=1000
 r-min-border-vertices-per-thread=50

config/quality_preset.ini

@@ -58,23 +58,30 @@ i-r-fm-iter-moves-on-recalc=true
 # main -> initial_partitioning -> refinement -> flows
 i-r-flow-algo=do_nothing
 # main -> refinement
-r-rebalancer-type=simple_rebalancer
+r-rebalancer-type=rebalancer
 r-refine-until-no-improvement=true
 r-relative-improvement-threshold=0.0025
 # main -> refinement -> label_propagation
 r-lp-type=label_propagation
+r-lp-unconstrained=true
 r-lp-maximum-iterations=5
 r-lp-rebalancing=true
 r-lp-he-size-activation-threshold=100
+r-lp-relative-improvement-threshold=0.001
 # main -> refinement -> fm
-r-fm-type=kway_fm
+r-fm-type=unconstrained
 r-fm-multitry-rounds=10
+r-fm-unconstrained-rounds=8
 r-fm-perform-moves-global=false
 r-fm-rollback-parallel=true
-r-fm-rollback-balance-violation-factor=1.25
+r-fm-rollback-balance-violation-factor=1.0
+r-fm-threshold-border-node-inclusion=0.7
+r-fm-imbalance-penalty-min=0.2
+r-fm-imbalance-penalty-max=1.0
 r-fm-seed-nodes=25
 r-fm-release-nodes=true
 r-fm-min-improvement=-1.0
+r-fm-unconstrained-min-improvement=0.002
 r-fm-obey-minimal-parallelism=true
 r-fm-time-limit-factor=0.25
 r-fm-iter-moves-on-recalc=true