mirror of
https://github.com/ANL-CEEESA/MIPLearn.git
synced 2025-12-06 01:18:52 -06:00
Make lazy constr component compatible with Pyomo+Gurobi
This commit is contained in:
@@ -38,9 +38,13 @@
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"execution_count": 1,
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"id": "f906fe9c",
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"metadata": {
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"ExecuteTime": {
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"end_time": "2024-01-30T22:19:30.826123021Z",
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"start_time": "2024-01-30T22:19:30.766066926Z"
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},
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"collapsed": false,
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"jupyter": {
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"outputs_hidden": false
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@@ -57,18 +61,18 @@
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"x4 = [[0.37454012 0.9507143 0.7319939 ]\n",
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" [0.5986585 0.15601864 0.15599452]\n",
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" [0.05808361 0.8661761 0.601115 ]]\n",
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"x5 = (2, 3)\t0.68030757\n",
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" (3, 2)\t0.45049927\n",
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" (4, 0)\t0.013264962\n",
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" (0, 2)\t0.94220173\n",
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" (4, 2)\t0.5632882\n",
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" (2, 1)\t0.3854165\n",
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" (1, 1)\t0.015966251\n",
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" (3, 0)\t0.23089382\n",
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" (4, 4)\t0.24102546\n",
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" (1, 3)\t0.68326354\n",
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" (3, 1)\t0.6099967\n",
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" (0, 3)\t0.8331949\n"
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"x5 = (3, 2)\t0.6803075671195984\n",
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" (2, 3)\t0.4504992663860321\n",
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" (0, 4)\t0.013264961540699005\n",
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" (2, 0)\t0.9422017335891724\n",
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" (2, 4)\t0.5632882118225098\n",
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" (1, 2)\t0.38541650772094727\n",
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" (1, 1)\t0.015966251492500305\n",
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" (0, 3)\t0.2308938205242157\n",
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" (4, 4)\t0.24102546274662018\n",
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" (3, 1)\t0.6832635402679443\n",
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" (1, 3)\t0.6099966764450073\n",
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" (3, 0)\t0.83319491147995\n"
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]
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}
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],
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@@ -182,6 +186,10 @@
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"execution_count": 4,
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"id": "ac6f8c6f",
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"metadata": {
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"ExecuteTime": {
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"end_time": "2024-01-30T22:19:30.826707866Z",
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"start_time": "2024-01-30T22:19:30.825940503Z"
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},
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"collapsed": false,
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"jupyter": {
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"outputs_hidden": false
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@@ -205,7 +213,7 @@
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"\n",
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"from miplearn.problems.tsp import (\n",
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" TravelingSalesmanGenerator,\n",
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" build_tsp_model,\n",
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" build_tsp_model_gurobipy,\n",
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")\n",
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"from miplearn.io import write_pkl_gz\n",
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"from miplearn.h5 import H5File\n",
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@@ -231,7 +239,7 @@
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"# Solve all instances and collect basic solution information.\n",
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"# Process at most four instances in parallel.\n",
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"bc = BasicCollector()\n",
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"bc.collect(glob(\"data/tsp/*.pkl.gz\"), build_tsp_model, n_jobs=4)\n",
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"bc.collect(glob(\"data/tsp/*.pkl.gz\"), build_tsp_model_gurobipy, n_jobs=4)\n",
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"\n",
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"# Read and print some training data for the first instance.\n",
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"with H5File(\"data/tsp/00000.h5\", \"r\") as h5:\n",
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@@ -244,6 +252,9 @@
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"execution_count": null,
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"id": "78f0b07a",
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"metadata": {
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"ExecuteTime": {
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"start_time": "2024-01-30T22:19:30.826179789Z"
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},
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"collapsed": false,
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"jupyter": {
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"outputs_hidden": false
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@@ -269,7 +280,7 @@
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.9.16"
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"version": "3.11.7"
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}
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},
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"nbformat": 4,
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@@ -51,7 +51,7 @@
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},
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{
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"cell_type": "code",
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"execution_count": 5,
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"execution_count": 1,
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"id": "ed9a18c8",
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"metadata": {
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"collapsed": false,
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@@ -204,7 +204,7 @@
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},
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{
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"cell_type": "code",
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"execution_count": 6,
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"execution_count": 2,
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"id": "a1bc38fe",
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"metadata": {
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"collapsed": false,
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@@ -326,7 +326,7 @@
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.9.16"
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"version": "3.11.7"
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}
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},
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"nbformat": 4,
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@@ -283,7 +283,7 @@
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.9.16"
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"version": "3.11.7"
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}
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},
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"nbformat": 4,
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@@ -108,11 +108,11 @@
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"execution_count": 1,
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"id": "f14e560c-ef9f-4c48-8467-72d6acce5f9f",
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"metadata": {
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"tags": [],
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"ExecuteTime": {
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"end_time": "2023-11-07T16:29:48.409419720Z",
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"start_time": "2023-11-07T16:29:47.824353556Z"
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}
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},
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"tags": []
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},
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"outputs": [
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{
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@@ -131,10 +131,10 @@
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"9 [ 8.57 22.77 17.06 16.25 4.14 4. 1.56 22.97 14.09 19.09] 100.79\n",
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"\n",
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"Restricted license - for non-production use only - expires 2024-10-28\n",
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"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
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"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
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"\n",
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"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
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"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
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"\n",
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"Optimize a model with 20 rows, 110 columns and 210 nonzeros\n",
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"Model fingerprint: 0x1ff9913f\n",
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@@ -159,8 +159,8 @@
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"H 0 0 2.0000000 1.27484 36.3% - 0s\n",
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" 0 0 1.27484 0 4 2.00000 1.27484 36.3% - 0s\n",
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"\n",
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"Explored 1 nodes (38 simplex iterations) in 0.02 seconds (0.00 work units)\n",
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"Thread count was 12 (of 12 available processors)\n",
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"Explored 1 nodes (38 simplex iterations) in 0.01 seconds (0.00 work units)\n",
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"Thread count was 20 (of 20 available processors)\n",
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"\n",
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"Solution count 3: 2 4 5 \n",
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"\n",
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@@ -323,10 +323,10 @@
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"capacities\n",
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" [1310. 988. 1004. 1269. 1007.]\n",
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"\n",
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"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
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"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
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"\n",
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"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
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"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
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"\n",
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"Optimize a model with 5 rows, 10 columns and 50 nonzeros\n",
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"Model fingerprint: 0xaf3ac15e\n",
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@@ -354,7 +354,7 @@
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" Cover: 1\n",
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"\n",
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"Explored 1 nodes (4 simplex iterations) in 0.01 seconds (0.00 work units)\n",
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"Thread count was 12 (of 12 available processors)\n",
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"Thread count was 20 (of 20 available processors)\n",
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"\n",
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"Solution count 2: -1279 -804 \n",
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"No other solutions better than -1279\n",
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@@ -498,10 +498,10 @@
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"demands = [6.12 1.39 2.92 3.66 4.56 7.85 2. 5.14 5.92 0.46]\n",
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"capacities = [151.89 42.63 16.26 237.22 241.41 202.1 76.15 24.42 171.06 110.04]\n",
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"\n",
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"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
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"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
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"\n",
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"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
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||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
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"\n",
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"Optimize a model with 21 rows, 110 columns and 220 nonzeros\n",
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"Model fingerprint: 0x8d8d9346\n",
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@@ -535,8 +535,8 @@
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" 0 0 86.06884 0 15 93.92000 86.06884 8.36% - 0s\n",
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"* 0 0 0 91.2300000 91.23000 0.00% - 0s\n",
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"\n",
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"Explored 1 nodes (70 simplex iterations) in 0.02 seconds (0.00 work units)\n",
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"Thread count was 12 (of 12 available processors)\n",
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"Explored 1 nodes (70 simplex iterations) in 0.07 seconds (0.00 work units)\n",
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"Thread count was 20 (of 20 available processors)\n",
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"\n",
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"Solution count 10: 91.23 93.92 93.98 ... 368.79\n",
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"\n",
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@@ -670,10 +670,10 @@
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"costs [1044.58 850.13 1014.5 944.83 697.9 971.87 213.49 220.98 70.23\n",
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" 425.33]\n",
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"\n",
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||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
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"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
||||
"\n",
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||||
"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
|
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"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
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"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
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"\n",
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"Optimize a model with 5 rows, 10 columns and 28 nonzeros\n",
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"Model fingerprint: 0xe5c2d4fa\n",
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@@ -688,8 +688,8 @@
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"Presolve time: 0.00s\n",
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"Presolve: All rows and columns removed\n",
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"\n",
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"Explored 0 nodes (0 simplex iterations) in 0.01 seconds (0.00 work units)\n",
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"Thread count was 1 (of 12 available processors)\n",
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"Explored 0 nodes (0 simplex iterations) in 0.00 seconds (0.00 work units)\n",
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"Thread count was 1 (of 20 available processors)\n",
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"\n",
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"Solution count 1: 213.49 \n",
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"\n",
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@@ -786,10 +786,13 @@
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"execution_count": 5,
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"id": "cc797da7",
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"metadata": {
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"collapsed": false,
|
||||
"ExecuteTime": {
|
||||
"end_time": "2023-11-07T16:29:48.806917868Z",
|
||||
"start_time": "2023-11-07T16:29:48.781619530Z"
|
||||
},
|
||||
"collapsed": false,
|
||||
"jupyter": {
|
||||
"outputs_hidden": false
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||||
}
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},
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"outputs": [
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@@ -806,10 +809,10 @@
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"costs [1044.58 850.13 1014.5 944.83 697.9 971.87 213.49 220.98 70.23\n",
|
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" 425.33]\n",
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"\n",
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"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
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"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
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"\n",
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"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
|
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"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
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"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
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"\n",
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"Optimize a model with 5 rows, 10 columns and 28 nonzeros\n",
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"Model fingerprint: 0x4ee91388\n",
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@@ -824,8 +827,9 @@
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"Presolve time: 0.00s\n",
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"Presolve: All rows and columns removed\n",
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||||
"\n",
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"Explored 0 nodes (0 simplex iterations) in 0.01 seconds (0.00 work units)\n",
|
||||
"Thread count was 1 (of 12 available processors)\n",
|
||||
"Explored 0 nodes (0 simplex iterations) in 0.00 seconds (0.00 work units)\n",
|
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"Thread count was 1 (of 20 available processors)\n",
|
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"\n",
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"Solution count 2: -1986.37 -1265.56 \n",
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"No other solutions better than -1986.37\n",
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"\n",
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@@ -930,10 +934,10 @@
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"weights[1] [ 2.06 96.99 83.24 21.23 18.18 18.34 30.42 52.48 43.19 29.12]\n",
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"\n",
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"Set parameter PreCrush to value 1\n",
|
||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
||||
"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
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"\n",
|
||||
"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
|
||||
"\n",
|
||||
"Optimize a model with 15 rows, 10 columns and 30 nonzeros\n",
|
||||
"Model fingerprint: 0x3240ea4a\n",
|
||||
@@ -957,7 +961,7 @@
|
||||
" 0 0 infeasible 0 -219.14000 -219.14000 0.00% - 0s\n",
|
||||
"\n",
|
||||
"Explored 1 nodes (5 simplex iterations) in 0.01 seconds (0.00 work units)\n",
|
||||
"Thread count was 12 (of 12 available processors)\n",
|
||||
"Thread count was 20 (of 20 available processors)\n",
|
||||
"\n",
|
||||
"Solution count 1: -219.14 \n",
|
||||
"No other solutions better than -219.14\n",
|
||||
@@ -965,7 +969,7 @@
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||||
"Optimal solution found (tolerance 1.00e-04)\n",
|
||||
"Best objective -2.191400000000e+02, best bound -2.191400000000e+02, gap 0.0000%\n",
|
||||
"\n",
|
||||
"User-callback calls 300, time in user-callback 0.00 sec\n"
|
||||
"User-callback calls 299, time in user-callback 0.00 sec\n"
|
||||
]
|
||||
}
|
||||
],
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||||
@@ -975,7 +979,7 @@
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||||
"from scipy.stats import uniform, randint\n",
|
||||
"from miplearn.problems.stab import (\n",
|
||||
" MaxWeightStableSetGenerator,\n",
|
||||
" build_stab_model,\n",
|
||||
" build_stab_model_gurobipy,\n",
|
||||
")\n",
|
||||
"\n",
|
||||
"# Set random seed to make example reproducible\n",
|
||||
@@ -998,7 +1002,7 @@
|
||||
"print()\n",
|
||||
"\n",
|
||||
"# Load and optimize the first instance\n",
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||||
"model = build_stab_model(data[0])\n",
|
||||
"model = build_stab_model_gurobipy(data[0])\n",
|
||||
"model.optimize()"
|
||||
]
|
||||
},
|
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@@ -1071,10 +1075,13 @@
|
||||
"execution_count": 7,
|
||||
"id": "9d0c56c6",
|
||||
"metadata": {
|
||||
"collapsed": false,
|
||||
"ExecuteTime": {
|
||||
"end_time": "2023-11-07T16:29:48.958833448Z",
|
||||
"start_time": "2023-11-07T16:29:48.898121017Z"
|
||||
},
|
||||
"collapsed": false,
|
||||
"jupyter": {
|
||||
"outputs_hidden": false
|
||||
}
|
||||
},
|
||||
"outputs": [
|
||||
@@ -1107,10 +1114,10 @@
|
||||
"\n",
|
||||
"Set parameter PreCrush to value 1\n",
|
||||
"Set parameter LazyConstraints to value 1\n",
|
||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
||||
"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
||||
"\n",
|
||||
"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
|
||||
"\n",
|
||||
"Optimize a model with 10 rows, 45 columns and 90 nonzeros\n",
|
||||
"Model fingerprint: 0x719675e5\n",
|
||||
@@ -1135,7 +1142,7 @@
|
||||
" Lazy constraints: 3\n",
|
||||
"\n",
|
||||
"Explored 1 nodes (17 simplex iterations) in 0.01 seconds (0.00 work units)\n",
|
||||
"Thread count was 12 (of 12 available processors)\n",
|
||||
"Thread count was 20 (of 20 available processors)\n",
|
||||
"\n",
|
||||
"Solution count 1: 2921 \n",
|
||||
"\n",
|
||||
@@ -1150,7 +1157,10 @@
|
||||
"import random\n",
|
||||
"import numpy as np\n",
|
||||
"from scipy.stats import uniform, randint\n",
|
||||
"from miplearn.problems.tsp import TravelingSalesmanGenerator, build_tsp_model\n",
|
||||
"from miplearn.problems.tsp import (\n",
|
||||
" TravelingSalesmanGenerator,\n",
|
||||
" build_tsp_model_gurobipy,\n",
|
||||
")\n",
|
||||
"\n",
|
||||
"# Set random seed to make example reproducible\n",
|
||||
"random.seed(42)\n",
|
||||
@@ -1173,7 +1183,7 @@
|
||||
"print()\n",
|
||||
"\n",
|
||||
"# Load and optimize the first instance\n",
|
||||
"model = build_tsp_model(data[0])\n",
|
||||
"model = build_tsp_model_gurobipy(data[0])\n",
|
||||
"model.optimize()"
|
||||
]
|
||||
},
|
||||
@@ -1283,10 +1293,13 @@
|
||||
"execution_count": 8,
|
||||
"id": "6217da7c",
|
||||
"metadata": {
|
||||
"collapsed": false,
|
||||
"ExecuteTime": {
|
||||
"end_time": "2023-11-07T16:29:49.061613905Z",
|
||||
"start_time": "2023-11-07T16:29:48.941857719Z"
|
||||
},
|
||||
"collapsed": false,
|
||||
"jupyter": {
|
||||
"outputs_hidden": false
|
||||
}
|
||||
},
|
||||
"outputs": [
|
||||
@@ -1320,10 +1333,10 @@
|
||||
" 828.28 775.18 834.99 959.76 865.72 1193.52 1058.92 985.19 893.92\n",
|
||||
" 962.16 781.88 723.15 639.04 602.4 787.02]\n",
|
||||
"\n",
|
||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
||||
"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
||||
"\n",
|
||||
"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
|
||||
"\n",
|
||||
"Optimize a model with 578 rows, 360 columns and 2128 nonzeros\n",
|
||||
"Model fingerprint: 0x4dc1c661\n",
|
||||
@@ -1361,8 +1374,8 @@
|
||||
" RLT: 1\n",
|
||||
" Relax-and-lift: 7\n",
|
||||
"\n",
|
||||
"Explored 1 nodes (234 simplex iterations) in 0.04 seconds (0.02 work units)\n",
|
||||
"Thread count was 12 (of 12 available processors)\n",
|
||||
"Explored 1 nodes (234 simplex iterations) in 0.03 seconds (0.02 work units)\n",
|
||||
"Thread count was 20 (of 20 available processors)\n",
|
||||
"\n",
|
||||
"Solution count 5: 364722 368600 374044 ... 440662\n",
|
||||
"\n",
|
||||
@@ -1487,10 +1500,10 @@
|
||||
"weights[0] [37.45 95.07 73.2 59.87 15.6 15.6 5.81 86.62 60.11 70.81]\n",
|
||||
"weights[1] [ 2.06 96.99 83.24 21.23 18.18 18.34 30.42 52.48 43.19 29.12]\n",
|
||||
"\n",
|
||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
||||
"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
||||
"\n",
|
||||
"CPU model: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 6 physical cores, 12 logical processors, using up to 12 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
|
||||
"\n",
|
||||
"Optimize a model with 15 rows, 10 columns and 30 nonzeros\n",
|
||||
"Model fingerprint: 0x2d2d1390\n",
|
||||
@@ -1514,7 +1527,7 @@
|
||||
" 0 0 infeasible 0 301.00000 301.00000 0.00% - 0s\n",
|
||||
"\n",
|
||||
"Explored 1 nodes (8 simplex iterations) in 0.01 seconds (0.00 work units)\n",
|
||||
"Thread count was 12 (of 12 available processors)\n",
|
||||
"Thread count was 20 (of 20 available processors)\n",
|
||||
"\n",
|
||||
"Solution count 1: 301 \n",
|
||||
"\n",
|
||||
@@ -1558,13 +1571,16 @@
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 9,
|
||||
"execution_count": null,
|
||||
"id": "9f12e91f",
|
||||
"metadata": {
|
||||
"collapsed": false,
|
||||
"ExecuteTime": {
|
||||
"end_time": "2023-11-07T16:29:49.075852252Z",
|
||||
"start_time": "2023-11-07T16:29:49.050243601Z"
|
||||
},
|
||||
"collapsed": false,
|
||||
"jupyter": {
|
||||
"outputs_hidden": false
|
||||
}
|
||||
},
|
||||
"outputs": [],
|
||||
@@ -1587,7 +1603,7 @@
|
||||
"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython3",
|
||||
"version": "3.9.16"
|
||||
"version": "3.11.7"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
|
||||
@@ -57,7 +57,7 @@
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 3,
|
||||
"execution_count": 1,
|
||||
"id": "92b09b98",
|
||||
"metadata": {
|
||||
"collapsed": false,
|
||||
@@ -70,10 +70,11 @@
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
||||
"Restricted license - for non-production use only - expires 2024-10-28\n",
|
||||
"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
||||
"\n",
|
||||
"CPU model: AMD Ryzen 9 7950X 16-Core Processor, instruction set [SSE2|AVX|AVX2|AVX512]\n",
|
||||
"Thread count: 16 physical cores, 32 logical processors, using up to 32 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
|
||||
"\n",
|
||||
"Optimize a model with 10 rows, 45 columns and 90 nonzeros\n",
|
||||
"Model fingerprint: 0x6ddcd141\n",
|
||||
@@ -91,11 +92,12 @@
|
||||
"\n",
|
||||
"Solved in 15 iterations and 0.00 seconds (0.00 work units)\n",
|
||||
"Optimal objective 2.761000000e+03\n",
|
||||
"Set parameter PreCrush to value 1\n",
|
||||
"Set parameter LazyConstraints to value 1\n",
|
||||
"Gurobi Optimizer version 10.0.1 build v10.0.1rc0 (linux64)\n",
|
||||
"Gurobi Optimizer version 10.0.3 build v10.0.3rc0 (linux64)\n",
|
||||
"\n",
|
||||
"CPU model: AMD Ryzen 9 7950X 16-Core Processor, instruction set [SSE2|AVX|AVX2|AVX512]\n",
|
||||
"Thread count: 16 physical cores, 32 logical processors, using up to 32 threads\n",
|
||||
"CPU model: 13th Gen Intel(R) Core(TM) i7-13800H, instruction set [SSE2|AVX|AVX2]\n",
|
||||
"Thread count: 10 physical cores, 20 logical processors, using up to 20 threads\n",
|
||||
"\n",
|
||||
"Optimize a model with 10 rows, 45 columns and 90 nonzeros\n",
|
||||
"Model fingerprint: 0x74ca3d0a\n",
|
||||
@@ -125,7 +127,7 @@
|
||||
" Lazy constraints: 3\n",
|
||||
"\n",
|
||||
"Explored 1 nodes (16 simplex iterations) in 0.01 seconds (0.00 work units)\n",
|
||||
"Thread count was 32 (of 32 available processors)\n",
|
||||
"Thread count was 20 (of 20 available processors)\n",
|
||||
"\n",
|
||||
"Solution count 1: 2796 \n",
|
||||
"\n",
|
||||
@@ -141,7 +143,7 @@
|
||||
"{'WS: Count': 1, 'WS: Number of variables set': 41.0}"
|
||||
]
|
||||
},
|
||||
"execution_count": 3,
|
||||
"execution_count": 1,
|
||||
"metadata": {},
|
||||
"output_type": "execute_result"
|
||||
}
|
||||
@@ -162,7 +164,7 @@
|
||||
"from miplearn.io import write_pkl_gz\n",
|
||||
"from miplearn.problems.tsp import (\n",
|
||||
" TravelingSalesmanGenerator,\n",
|
||||
" build_tsp_model,\n",
|
||||
" build_tsp_model_gurobipy,\n",
|
||||
")\n",
|
||||
"from miplearn.solvers.learning import LearningSolver\n",
|
||||
"\n",
|
||||
@@ -189,7 +191,7 @@
|
||||
"\n",
|
||||
"# Collect training data\n",
|
||||
"bc = BasicCollector()\n",
|
||||
"bc.collect(train_data, build_tsp_model, n_jobs=4)\n",
|
||||
"bc.collect(train_data, build_tsp_model_gurobipy, n_jobs=4)\n",
|
||||
"\n",
|
||||
"# Build learning solver\n",
|
||||
"solver = LearningSolver(\n",
|
||||
@@ -211,7 +213,7 @@
|
||||
"solver.fit(train_data)\n",
|
||||
"\n",
|
||||
"# Solve a test instance\n",
|
||||
"solver.optimize(test_data[0], build_tsp_model)"
|
||||
"solver.optimize(test_data[0], build_tsp_model_gurobipy)"
|
||||
]
|
||||
},
|
||||
{
|
||||
@@ -239,7 +241,7 @@
|
||||
"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython3",
|
||||
"version": "3.9.12"
|
||||
"version": "3.11.7"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
|
||||
Reference in New Issue
Block a user