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95459f5640
1brc/src/main/java/dev/morling/onebrc
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Marko Topolnik 95459f5640
Entry into the contest, calculate_average_mtopolnik.sh (#246) 
* calculate_average_mtopolnik

* short hash (just first 8 bytes of name)

* Remove unneeded checks

* Remove archiving classes

* 2x larger hashtable

* Add "set" to setters

* Simplify parsing temperature, remove newline search

* Reduce the size of the name slot

* Store name length and use to detect collision

* Reduce memory loads in parseTemperature

* Use short for min/max

* Extract constant for semicolon

* Fix script header

* Explicit bash shell in shebang

* Inline usage of broadcast semicolon

* Try vectorization

* Remove vectorization

* Go Unsafe

* Use SWAR temperature parsing by merykitty

* Inline some things

* Remove commented-out MemorySegment usage

* Inline namesMem.asSlice() invocation

* Try out JVM JIT flags

* Implement strcmp

* Remove unused instance variables

* Optimize hashing

* Put station name into hashtable

* Reorder method

* Remove usage of MemorySegment.getUtf8String

Replace with UNSAFE.copyMemory() and new String()

* Fix hashing bug

* Remove outdated comments

* Fix informative constants

* Use broadcastByte() more

* Improve method naming

* More hashing

* Revert more hashing

* Add commented-out code to hash 16 bytes

* Slight cleanup

* Align hashtable at cacheline boundary

* Add Graal Native image

* Revert Graal Native image

This reverts commit d916a42326d89bd1a841bbbecfae185adb8679d7.

* Simplify shell script (no SDK selection)

* Move a constant, zero out hashtable on start

* Better name comparison

* Add prepare_mtopolnik.sh

* Cleaner idiom in name comparison

* AND instead of MOD for hashtable indexing

* Improve word masking code

* Fix formatting

* Reduce memory loads

* Remove endianness checks

* Avoid hash == 0 problem

* Fix subtle bug

* MergeSort of parellel results

* Touch up perf

* Touch up perf

* Remove -Xmx256m

* Extract result printing method

* Print allocation details on OOME

* Single mmap

* Use global allocation arena
2024-01-11 20:02:14 +01:00
..
CalculateAverage_abfrmblr.java 1 brc - 2gb memory 1 min 31 secs 2024-01-06 00:25:15 +01:00
CalculateAverage_AbstractKamen.java CalculateAverage_AbstractKamen 2024-01-10 21:48:12 +01:00
CalculateAverage_ags313.java first attempt 2024-01-07 12:09:43 +01:00
CalculateAverage_alesj.java Simple, slow but very short. :-) (#240) 2024-01-11 09:48:27 +01:00
CalculateAverage_algirdasrascius.java Quick and dirty first version (#215) 2024-01-10 22:35:37 +01:00
CalculateAverage_anandmattikopp.java feat: first version of the 1brc solution 2024-01-05 11:24:14 +01:00
CalculateAverage_arjenvaneerde.java Some optimizations arjenvaneerde 2024-01-10 22:06:28 +01:00
CalculateAverage_armandino.java armandino: first submission 2024-01-05 00:13:44 +01:00
CalculateAverage_artpar.java artpar's attempt 2024-01-05 23:28:38 +01:00
CalculateAverage_artsiomkorzun.java improved artsiomkorzun solution (#176) 2024-01-11 09:00:24 +01:00
CalculateAverage_asun.java Add entry by Andrew Sun 2024-01-07 10:00:58 +01:00
CalculateAverage_berry120.java Initial implementation (#158) 2024-01-10 22:17:11 +01:00
CalculateAverage_bjhara.java Evaluating bjhara's entry 2024-01-02 20:43:46 +01:00
CalculateAverage_charlibot.java Charlibot submission (#249) 2024-01-11 10:01:06 +01:00
CalculateAverage_coolmineman.java Initial Implementation - coolmineman (#196) 2024-01-07 11:39:45 +01:00
CalculateAverage_couragelee.java Add CalculateAverage_couragelee Java class and shell script 2024-01-10 21:16:36 +01:00
CalculateAverage_criccomini.java Adding Chris Riccomini's submission 2024-01-03 15:56:31 +01:00
CalculateAverage_davecom.java Update davecom entry use ByteBuffer instead of String for Names and graal (#245) 2024-01-11 10:24:25 +01:00
CalculateAverage_davery22.java Add davery22 impl 2024-01-07 21:14:04 +01:00
CalculateAverage_ddimtirov.java ddimtirov - supporting hash collisions, should have fixed #101 2024-01-06 19:24:48 +01:00
CalculateAverage_deemkeen.java initial deemkeen 2024-01-05 19:30:02 +01:00
CalculateAverage_ebarlas.java Consume four bytes at a time from buffer using getInt. Store key with unsafe int array rather than byte array. Use custom equals rather than Arrays equals. 2024-01-10 20:03:14 +01:00
CalculateAverage_entangled90.java Leaderboard update 2024-01-07 10:58:05 +01:00
CalculateAverage_fatroom.java Fixed failing tests 2024-01-11 19:49:51 +01:00
CalculateAverage_felix19350.java Implementation of 1brc - felix19350 (#53) 2024-01-06 11:27:30 +01:00
CalculateAverage_filiphr.java Use proper key for CalculateAverage_filiphr; 2024-01-05 17:54:08 +01:00
CalculateAverage_flippingbits.java Second submission by flippingbits - 50% performance improvement 2024-01-10 20:36:22 +01:00
CalculateAverage_fragmede.java Custom atoi/atof parser logic, plus math changes. 2024-01-05 16:59:29 +01:00
CalculateAverage_gabrielreid.java gabrielreid take 2 2024-01-10 20:43:46 +01:00
CalculateAverage_gamlerhart.java Basic Implementation with Memory Mapped File, SIMD Search 2024-01-11 11:58:57 +01:00
CalculateAverage_gnmathur.java Leaderboard, clean-up 2024-01-10 21:37:16 +01:00
CalculateAverage_hchiorean.java hchiorean - Initial version 2024-01-06 17:59:49 +01:00
CalculateAverage_hundredwatt.java create fork hundredwatt (#279) 2024-01-11 11:48:22 +01:00
CalculateAverage_imrafaelmerino.java Updating leaderboard, formatting, avoiding OOME 2024-01-06 18:20:44 +01:00
CalculateAverage_isolgpus.java isolgpus: submission 2 - about a 25% improvement on submission 1. (#168) 2024-01-07 20:55:30 +01:00
CalculateAverage_itaske.java Adding a missing new line 2024-01-04 21:32:02 +01:00
CalculateAverage_iziamos.java An implementation optimised for simplicity/readability. 2024-01-07 11:04:49 +01:00
CalculateAverage_JamalMulla.java First submission - CalculateAverage_JamalMulla.java - Jamal Mulla (#238) 2024-01-11 19:56:29 +01:00
CalculateAverage_japplis.java Implementation CalculateAverage_japplis of 1BRC from Anthony Goubard (#271) 2024-01-10 23:09:21 +01:00
CalculateAverage_jgrateron.java jgrateron: fix formatting 2024-01-04 23:56:47 +01:00
CalculateAverage_jotschi.java Adding Johannes Schüth's submission 2024-01-05 22:52:39 +01:00
CalculateAverage_kevinmcmurtrie.java 1brc submission - Kevin McMurtrie (#195) 2024-01-07 11:12:57 +01:00
CalculateAverage_kgeri.java Adding kgeri's solution (#137) 2024-01-07 09:45:30 +01:00
CalculateAverage_khmarbaise.java Adding khmarbaise 2024-01-03 20:21:23 +01:00
CalculateAverage_kuduwa_keshavram.java Optimised Code to use FileSegments with ByteBuffer (#184) 2024-01-07 10:11:56 +01:00
CalculateAverage_kumarsaurav123.java Leaderboard, formatting 2024-01-11 10:48:03 +01:00
CalculateAverage_lawrey.java Leaderboard update 2024-01-04 18:22:13 +01:00
CalculateAverage_maeda6uiui.java Add code by maeda6uiui 2024-01-11 11:32:30 +01:00
CalculateAverage_MeanderingProgrammer.java First attempt from MeanderingProgrammer 2024-01-11 12:03:29 +01:00
CalculateAverage_merykitty.java merykitty's second attempt 2024-01-10 20:24:19 +01:00
CalculateAverage_moysesb.java Adding Moysés Borges Furtado's submission 2024-01-04 23:15:22 +01:00
CalculateAverage_mtopolnik.java Entry into the contest, calculate_average_mtopolnik.sh (#246) 2024-01-11 20:02:14 +01:00
CalculateAverage_muditsaxena.java Mudit/initial attempt (#41) 2024-01-06 18:54:37 +01:00
CalculateAverage_naive.java Adding Sam Pullara's submission; 2024-01-03 15:35:51 +01:00
CalculateAverage_obourgain.java My implementation is in dev.morling.onebrc.CalculateAverage_obourgain and runnable with provided script calculate_average_obourgain.sh (#75) 2024-01-07 20:15:53 +01:00
CalculateAverage_padreati.java - implementation by padreati 2024-01-02 21:16:49 +01:00
CalculateAverage_palmr.java Pass newly added tests :fingers-crossed: 2024-01-04 23:54:04 +01:00
CalculateAverage_pedestrianlove.java Add entries for pedestrianlove. (#265) 2024-01-10 22:57:41 +01:00
CalculateAverage_phd3.java first cut 1brc submission (#216) 2024-01-10 22:40:27 +01:00
CalculateAverage_raipc.java Initial solution by raipc 2024-01-10 22:26:00 +01:00
CalculateAverage_rby.java rby: Has some interesting optimisations but could be improved further with a custom hash map 2024-01-05 20:25:51 +01:00
CalculateAverage_richardstartin.java make aggregation state grow dynamically 2024-01-04 23:48:54 +01:00
CalculateAverage_roman_r_m.java First version - roman_r_m (#193) 2024-01-11 12:29:08 +01:00
CalculateAverage_royvanrijn.java Fixing the off-by-one error and updating to native, redone layout of code. (#307) 2024-01-11 11:12:05 +01:00
CalculateAverage_rprabhu.java Implementation by rprabhu 2024-01-10 21:09:42 +01:00
CalculateAverage_santanu.java Implements CalculateAverage_santanu.java 2024-01-07 10:40:18 +01:00
CalculateAverage_seijikun.java seijikun: Fix new unit-test introduced with #125 2024-01-06 10:39:19 +01:00
CalculateAverage_semotpan.java CalculateAverage semotpan attempt 1 2024-01-07 10:57:34 +01:00
CalculateAverage_spullara.java Updating Sam Pullara's entry 2024-01-04 19:14:06 +01:00
CalculateAverage_thomaswue.java Second tuning for thomaswue 2024-01-10 19:42:51 +01:00
CalculateAverage_truelive.java CalculateAverage_truelive second attempt 2024-01-05 23:40:03 +01:00
CalculateAverage_twobiers.java Adjust buffer size to solve test failure in #125 2024-01-06 00:12:36 +01:00
CalculateAverage_Ujjwalbharti.java Added implementation for calculating average 2024-01-05 17:23:13 +01:00
CalculateAverage_yavuztas.java Improvement in CalculateAverage_yavuztas (#162) 2024-01-06 19:09:16 +01:00
CalculateAverage_yehwankim23.java Add yehwankim23 (#148) 2024-01-07 20:41:41 +01:00
CalculateAverage_yemreinci.java Improve spullara's solution 2024-01-05 23:00:43 +01:00
CalculateAverage_zerninv.java Implements CalculateAverage_zerninv.java 2024-01-10 21:53:34 +01:00
CalculateAverage.java Initial implementation, using BufferedReader, parallel processing, combining everything in a single go, sorting afterwards (unoptimized) 2024-01-01 18:33:40 +01:00
CreateMeasurements2.java Auto reformat classes 2024-01-04 15:35:34 +01:00
CreateMeasurements3.java More detailed attribution 2024-01-06 10:35:44 +01:00
CreateMeasurements.java Fix #159 2024-01-06 11:05:36 +01:00
CreateMeasurementsFast.java Add multithreaded generation of measurements file with Gaussian distribution (M2 AIR took 24 seconds for 1B items) (#175) 2024-01-11 12:16:30 +01:00