Leaderboard update
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Gunnar Morling
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README.md
27
README.md
@ -38,19 +38,20 @@ Submit your implementation by Jan 31 2024 and become part of the leaderboard!
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| # | Result (m:s.ms) | Implementation | JDK | Submitter |
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|---|-----------------|--------------------|-----|---------------|
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| 1.| 00:14.848| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_spullara.java)| 21.0.1-graalce| [Sam Pullara](https://github.com/spullara)|
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| 2.| 00:18.865| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_palmr.java)| 21.0.1-open| [Nick Palmer](https://github.com/palmr)|
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| 3.| 00:21.853| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_filiphr.java)| 21.0.1-graal| [Filip Hrisafov](https://github.com/filiphr)|
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| 4.| 00:23.366| [link](https://github.com/gunnarmorling/1brc/pull/5/)| 21.0.1-open | [Roy van Rijn](https://github.com/royvanrijn)|
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| 5.| 00:38.106| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_seijikun.java)| 21.0.1-open | [Markus Ebner](https://github.com/seijikun)|
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| 6.| 00:38.510| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_bjhara.java)| 21.0.1-open | [Hampus Ram](https://github.com/bjhara)|
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| 7.| 00:38.819| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_richardstartin.java)| 21.0.1-open | [Richard Startin](https://github.com/richardstartin)|
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| 8.| 00:50.547| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_padreati.java)| 21.0.1-open | [Aurelian Tutuianu](https://github.com/padreati)|
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| 9.| 00:53.679| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_criccomini.java)| 21.0.1-open | [Chris Riccomini](https://github.com/criccomini)|
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|10.| 00:57.141| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_truelive.java)| 21.0.1-open | [Roman Schweitzer](https://github.com/truelive)|
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|11.| 02:00.101| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_khmarbaise.java)| 21.0.1-open | [khmarbaise](https://github.com/khmarbaise)|
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|12.| 02:08.315| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_itaske.java)| 21.0.1-open | [itaske](https://github.com/itaske)|
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|13.| 02:08.650| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa_keshavram.java)| 21.0.1-open | [Kuduwa Keshavram](https://github.com/kuduwa_keshavram)|
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|14.| 04:13.449| [link](https://github.com/gunnarmorling/onebrc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage.java) (baseline)| 21.0.1-open | [Gunnar Morling](https://github.com/gunnarmorling)|
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| 2.| 00:17.905| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_lawrey.java)| 21.0.1-open| [Peter Lawrey](https://github.com/peter-lawrey)|
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| 3.| 00:18.865| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_palmr.java)| 21.0.1-open| [Nick Palmer](https://github.com/palmr)|
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| 4.| 00:21.853| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_filiphr.java)| 21.0.1-graal| [Filip Hrisafov](https://github.com/filiphr)|
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| 5.| 00:23.260| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_richardstartin.java)| 21.0.1-open | [Richard Startin](https://github.com/richardstartin)|
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| 6.| 00:23.366| [link](https://github.com/gunnarmorling/1brc/pull/5/)| 21.0.1-open | [Roy van Rijn](https://github.com/royvanrijn)|
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| 7.| 00:38.106| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_seijikun.java)| 21.0.1-open | [Markus Ebner](https://github.com/seijikun)|
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| 8.| 00:38.510| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_bjhara.java)| 21.0.1-open | [Hampus Ram](https://github.com/bjhara)|
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| 9.| 00:50.547| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_padreati.java)| 21.0.1-open | [Aurelian Tutuianu](https://github.com/padreati)|
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|10.| 00:53.679| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_criccomini.java)| 21.0.1-open | [Chris Riccomini](https://github.com/criccomini)|
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|11.| 00:57.141| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_truelive.java)| 21.0.1-open | [Roman Schweitzer](https://github.com/truelive)|
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|12.| 02:00.101| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_khmarbaise.java)| 21.0.1-open | [khmarbaise](https://github.com/khmarbaise)|
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|13.| 02:08.315| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_itaske.java)| 21.0.1-open | [itaske](https://github.com/itaske)|
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|14.| 02:08.650| [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa_keshavram.java)| 21.0.1-open | [Kuduwa Keshavram](https://github.com/kuduwa_keshavram)|
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|15.| 04:13.449| [link](https://github.com/gunnarmorling/onebrc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage.java) (baseline)| 21.0.1-open | [Gunnar Morling](https://github.com/gunnarmorling)|
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See [below](#entering-the-challenge) for instructions how to enter the challenge with your own implementation.
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1
pom.xml
1
pom.xml
@ -185,6 +185,7 @@
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<exclude>**/.dontdelete</exclude>
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<exclude>**/measurements*.txt</exclude>
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<exclude>**/measurements*.out</exclude>
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<exclude>out_expected.txt</exclude>
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</excludes>
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</configuration>
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<executions>
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@ -159,7 +159,8 @@ public class CalculateAverage_lawrey {
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m.sample(temp / 10.0);
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}
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} catch (IOException ioe) {
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}
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catch (IOException ioe) {
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throw new RuntimeException(ioe);
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}
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return map;
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@ -169,8 +170,7 @@ public class CalculateAverage_lawrey {
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private static int readTemperatureFromBuffer(MappedByteBuffer mbb) {
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int temp = 0;
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boolean negative = false;
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outer:
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while (mbb.remaining() > 0) {
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outer: while (mbb.remaining() > 0) {
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byte b = mbb.get();
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switch (b) {
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case '-':
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@ -87,8 +87,7 @@ public class CalculateAverage_richardstartin {
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private final Table table = new Table(nextBaseIndex());
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private static final AtomicIntegerFieldUpdater<Dictionary> BASE_INDEX_UPDATER =
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AtomicIntegerFieldUpdater.newUpdater(Dictionary.class, "baseIndex");
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private static final AtomicIntegerFieldUpdater<Dictionary> BASE_INDEX_UPDATER = AtomicIntegerFieldUpdater.newUpdater(Dictionary.class, "baseIndex");
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volatile int baseIndex;
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private void forEach(Table table, IndexedStringConsumer consumer) {
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@ -120,13 +119,15 @@ public class CalculateAverage_richardstartin {
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if (storedKey == null) {
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if (row.keys.compareAndSet(c, null, slice)) {
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return table.index(rowIndex, c);
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} else {
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}
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else {
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storedKey = row.keys.get(c);
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if (slice.equals(storedKey)) {
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return table.index(rowIndex, c);
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}
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}
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} else if (slice.equals(storedKey)) {
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}
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else if (slice.equals(storedKey)) {
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return table.index(rowIndex, c);
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}
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}
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@ -141,8 +142,7 @@ public class CalculateAverage_richardstartin {
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private static final class Row {
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private static final AtomicReferenceFieldUpdater<Row, Table>
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NEXT_TABLE_UPDATER = AtomicReferenceFieldUpdater.newUpdater(Row.class, Table.class, "next");
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private static final AtomicReferenceFieldUpdater<Row, Table> NEXT_TABLE_UPDATER = AtomicReferenceFieldUpdater.newUpdater(Row.class, Table.class, "next");
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private final AtomicReferenceArray<ByteBuffer> keys = new AtomicReferenceArray<>(CELLS);
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volatile Table next;
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@ -152,7 +152,8 @@ public class CalculateAverage_richardstartin {
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Table newTable = new Table(baseIndexSupplier.getAsInt());
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if (NEXT_TABLE_UPDATER.compareAndSet(this, null, newTable)) {
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next = newTable;
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} else {
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}
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else {
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next = this.next;
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}
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}
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@ -180,14 +181,16 @@ public class CalculateAverage_richardstartin {
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private static long compilePattern(long repeat) {
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return 0x101010101010101L * repeat;
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}
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private static long compilePattern(char delimiter) {
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return compilePattern (delimiter & 0xFFL);
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return compilePattern(delimiter & 0xFFL);
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}
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private static long compilePattern(byte delimiter) {
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return compilePattern(delimiter & 0xFFL);
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}
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private static final long NEW_LINE = compilePattern((byte)'\n');
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private static final long NEW_LINE = compilePattern((byte) '\n');
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private static final long DELIMITER = compilePattern(';');
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private static int firstInstance(long word, long pattern) {
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@ -311,7 +314,8 @@ public class CalculateAverage_richardstartin {
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for (int i = 0; i < contribution.length; i++) {
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if (aggregate[i] == null) {
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aggregate[i] = contribution[i];
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} else if (contribution[i] != null) {
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}
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else if (contribution[i] != null) {
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double[] to = aggregate[i];
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double[] from = contribution[i];
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// todo won't vectorise - consider separating aggregates into distinct regions and apply
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@ -334,7 +338,8 @@ public class CalculateAverage_richardstartin {
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var slice = slices.get(min);
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computeSlice(slice, pages);
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return pages;
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} else {
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}
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else {
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int mid = (min + max) / 2;
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var low = new AggregationTask(dictionary, slices, min, mid);
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var high = new AggregationTask(dictionary, slices, mid + 1, max);
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