Mercurial > gemma

annotate cmd/octreediff/main.go @ 2470:5bd3236f2b1f octree-diff

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Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 26 Feb 2019 11:01:06 +0100
parents 1312953defab
children db0e4ab57977
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package main
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15
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16 import (
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17 "context"
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18 "database/sql"
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19 "errors"
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20 "flag"
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21 "fmt"
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22 "log"
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23 "runtime"
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24 "sync"
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25 "time"
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26
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27 "gemma.intevation.de/gemma/pkg/common"
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28 "gemma.intevation.de/gemma/pkg/octree"
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29 )
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30
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31 var (
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32 bottleneck = flag.String("bottleneck", "", "name of the bottleneck")
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33 first = flag.String("first", "", "date of the first sounding result")
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34 second = flag.String("second", "", "date of the second sounding result")
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35 )
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36
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37 const (
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38 loadOctreeSQL = `
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39 SELECT sr.octree_index
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40 FROM waterway.sounding_results sr JOIN waterway.bottlenecks bn
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41 ON sr.bottleneck_id = bn.id
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42 WHERE bn.bottleneck_id = $1 AND sr.date_info = $2::date
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43 AND sr.octree_index IS NOT NULL`
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44 )
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45
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46 func check(err error) {
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47 if err != nil {
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48 log.Fatalf("error: %v\n", err)
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49 }
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50 }
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51
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52 type point struct {
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53 x float64
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54 y float64
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55 }
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56
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57 func sliceWork(
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58 vs []octree.Vertex,
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59 dst map[point]float64,
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60 fn func([]octree.Vertex, func([]octree.Vertex) []octree.Vertex),
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61 ) {
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62 n := runtime.NumCPU()
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63
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64 wg := new(sync.WaitGroup)
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65
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66 slices := make(chan []octree.Vertex)
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67 out := make(chan []octree.Vertex)
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68
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69 pool := make(chan []octree.Vertex, n)
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70
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71 const pageSize = 2048
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72
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73 turn := func(p []octree.Vertex) []octree.Vertex {
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74 if p != nil {
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75 out <- p
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76 }
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77 select {
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78 case p = <-pool:
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79 default:
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80 p = make([]octree.Vertex, 0, pageSize)
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81 }
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82 return p
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83 }
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84
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85 for i := 0; i < n; i++ {
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86 wg.Add(1)
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87 go func() {
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88 defer wg.Done()
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89 for slice := range slices {
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90 fn(slice, turn)
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91 }
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92 }()
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93 }
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94 done := make(chan struct{})
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95 go func() {
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96 defer close(done)
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97 for s := range out {
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98 for i := range s {
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99 v := &s[i]
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100 key := point{x: v.X, y: v.Y}
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101 if z, found := dst[key]; found {
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102 dst[key] = (z + v.Z) * 0.5
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103 } else {
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104 dst[key] = v.Z
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105 }
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106 }
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107 select {
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108 case pool <- s[:0:pageSize]:
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109 default:
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110 }
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111 }
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112 }()
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113
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114 size := len(vs)/n + 1
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115 for len(vs) > 0 {
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116 var l int
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117 if len(vs) < size {
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118 l = len(vs)
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119 } else {
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120 l = size
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121 }
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122 slices <- vs[:l]
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123 vs = vs[l:]
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124 }
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125 close(slices)
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126 wg.Wait()
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127 close(out)
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128 <-done
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129 }
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130
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parents:
diff changeset
131 func process(bottleneck string, firstDate, secondDate time.Time) error {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 start := time.Now()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 defer func() { log.Printf("processing took %v\n", time.Since(start)) }()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 ctx := context.Background()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 return run(func(db *sql.DB) error {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 conn, err := db.Conn(ctx)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140 if err != nil {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141 return err
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143 defer conn.Close()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
144
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145 type load struct {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146 date time.Time
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
147 data []byte
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148 err *error
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 dst **octree.Tree
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
151
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
152 out := make(chan *load)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
153 wg := new(sync.WaitGroup)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155 n := runtime.NumCPU()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 if n > 2 {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 n = 2
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
158 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
159
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
160 for i := 0; i < n; i++ {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 wg.Add(1)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162 go func() {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163 defer wg.Done()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164 for l := range out {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
165 if *l.err == nil {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
166 *l.dst, *l.err = octree.Deserialize(l.data)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
167 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
168 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 }()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
171
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
172 var firstErr, secondErr error
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
173 var first, second *octree.Tree
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
174
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175 for _, l := range []*load{
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176 {date: firstDate, dst: &first, err: &firstErr},
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 {date: secondDate, dst: &second, err: &secondErr},
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
178 } {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
179 var data []byte
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
180 if err := conn.QueryRowContext(
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 ctx,
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182 loadOctreeSQL,
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183 bottleneck,
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184 l.date,
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185 ).Scan(&data); err != nil {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 *l.err = err
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187 } else {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 l.data = data
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
190 out <- l
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
192 close(out)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
194 wg.Wait()
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
195
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 if firstErr != nil || secondErr != nil {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
197 if firstErr != nil && secondErr != nil {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
198 return fmt.Errorf("%v, %v", firstErr, secondErr)
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
199 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200 if firstErr != nil {
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 return firstErr
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 return secondErr
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 }
86c7a023400e Started experimental octree diff branch.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205
2468
27cc04bbda46 Bail out if the EPSG codes of the datasets don't match.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2467
diff changeset
206 if first.EPSG != second.EPSG {
27cc04bbda46 Bail out if the EPSG codes of the datasets don't match.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2467
diff changeset
207 return errors.New("EPSG codes mismatch. Needs transformation slow pass.")
27cc04bbda46 Bail out if the EPSG codes of the datasets don't match.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2467
diff changeset
208 }
27cc04bbda46 Bail out if the EPSG codes of the datasets don't match.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2467
diff changeset
209
2470
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
210 now := time.Now()
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
211 log.Printf("loading took %v\n", now.Sub(start))
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
212 last := now
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
213
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
214 firstVs, secondVs := first.Vertices(), second.Vertices()
2465
86c7a023400e Started experimental octree diff branch.
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parents:
diff changeset
215
2470
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
216 result := make(map[point]float64, len(firstVs)+len(secondVs))
2466
a1e751c08c56 Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2465
diff changeset
217
2470
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
218 sliceWork(
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
219 firstVs,
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
220 result,
2469
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
221 func(
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
222 slice []octree.Vertex,
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
223 turn func([]octree.Vertex) []octree.Vertex,
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
224 ) {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
225 p := turn(nil)
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
226 for i := range slice {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
227 v := &slice[i]
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
228 if z, found := second.Value(v.X, v.Y); found {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
229 p = append(p, octree.Vertex{v.X, v.Y, v.Z - z})
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
230 if len(p) == cap(p) {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
231 p = turn(p)
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
232 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
233 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
234 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
235 if len(p) > 0 {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
236 turn(p)
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
237 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
238 })
2466
a1e751c08c56 Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2465
diff changeset
239
2470
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
240 sliceWork(
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
241 secondVs,
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
242 result,
2469
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
243 func(
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
244 slice []octree.Vertex,
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
245 turn func([]octree.Vertex) []octree.Vertex,
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
246 ) {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
247 p := turn(nil)
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
248 for i := range slice {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
249 v := &slice[i]
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
250 if z, found := first.Value(v.X, v.Y); found {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
251 p = append(p, octree.Vertex{v.X, v.Y, z - v.Z})
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
252 if len(p) == cap(p) {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
253 p = turn(p)
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
254 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
255 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
256 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
257 if len(p) > 0 {
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
258 turn(p)
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
259 }
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
260 })
1312953defab Do difference calculation multi-core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2468
diff changeset
261
2470
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
262 now = time.Now()
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
diff changeset
263 log.Printf("setting in took %v\n", now.Sub(last))
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2469
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264 last = now
5bd3236f2b1f Integrate deduplication with setting in. Even if there is more contention in total it seems to be cheaper.
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265 log.Printf("num points: %d\n", len(result))
2465
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266
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267 return nil
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268 })
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269 }
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270
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271 func main() {
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272
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273 flag.Parse()
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274
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275 firstDate, err := time.Parse(common.DateFormat, *first)
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276 check(err)
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277 secondDate, err := time.Parse(common.DateFormat, *second)
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278 check(err)
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279
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280 if *bottleneck == "" {
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281 log.Fatalln("Missing bottleneck name")
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282 }
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283
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284 check(process(*bottleneck, firstDate, secondDate))
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285 }