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LICENSE.txt
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README.md
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calculate_average_AbstractKamen.sh
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calculate_average_C5H12O5.sh
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calculate_average_JamalMulla.sh
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calculate_average_JesseVanRooy.sh
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calculate_average_Kidlike.sh
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calculate_average_MahmoudFawzyKhalil.sh
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calculate_average_MeanderingProgrammer.sh
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calculate_average_SamuelYvon.sh
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calculate_average_Ujjwalbharti.sh
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calculate_average_abeobk.sh
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calculate_average_abfrmblr.sh
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calculate_average_adriacabeza.sh
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calculate_average_ags313.sh
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calculate_average_alesj.sh
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calculate_average_algirdasrascius.sh
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calculate_average_anandmattikopp.sh
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calculate_average_anitasv.sh
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calculate_average_arjenvaneerde.sh
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calculate_average_arjenw.sh
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calculate_average_armandino.sh
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calculate_average_artpar.sh
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calculate_average_artsiomkorzun.sh
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calculate_average_as-com.sh
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calculate_average_baseline.sh
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calculate_average_baseline_original_rounding.sh
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calculate_average_berry120.sh
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calculate_average_bjhara.sh
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calculate_average_charlibot.sh
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calculate_average_cliffclick.sh
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calculate_average_coolmineman.sh
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calculate_average_couragelee.sh
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calculate_average_criccomini.sh
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calculate_average_davecom.sh
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calculate_average_davery22.sh
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calculate_average_ddimtirov.sh
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calculate_average_deemkeen.sh
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calculate_average_dmitry-midokura.sh
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calculate_average_ebarlas.sh
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calculate_average_entangled90.sh
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calculate_average_eriklumme.sh
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calculate_average_faridtmammadov.sh
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calculate_average_fatroom.sh
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calculate_average_felix19350.sh
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calculate_average_filiphr.sh
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calculate_average_flippingbits.sh
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calculate_average_fragmede.sh
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calculate_average_gabrielreid.sh
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calculate_average_gamlerhart.sh
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calculate_average_gnabyl.sh
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calculate_average_gnmathur.sh
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calculate_average_gonix.sh
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calculate_average_hallvard.sh
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calculate_average_hchiorean.sh
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calculate_average_hundredwatt.sh
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calculate_average_ianopolous.sh
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calculate_average_ianopolousfast.sh
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calculate_average_imrafaelmerino.sh
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calculate_average_isolgpus.sh
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calculate_average_itaske.sh
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calculate_average_ivanklaric.sh
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calculate_average_iziamos.sh
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calculate_average_japplis.sh
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calculate_average_jatingala.sh
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calculate_average_javamak.sh
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calculate_average_jbachorik.sh
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calculate_average_jerrinot.sh
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calculate_average_jgrateron.sh
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calculate_average_jincongho.sh
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calculate_average_jotschi.sh
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calculate_average_jparera.sh
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calculate_average_karthikeyan97.sh
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calculate_average_kevinmcmurtrie.sh
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calculate_average_kgeri.sh
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calculate_average_khmarbaise.sh
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calculate_average_kuduwa-keshavram.sh
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calculate_average_kumarsaurav123.sh
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calculate_average_lawrey.sh
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calculate_average_maeda6uiui.sh
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calculate_average_maximz101.sh
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calculate_average_merykitty.sh
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calculate_average_merykittyunsafe.sh
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calculate_average_moysesb.sh
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calculate_average_mtopolnik.sh
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calculate_average_mudit-saxena.sh
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calculate_average_netrunnereve.sh
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calculate_average_obourgain.sh
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calculate_average_omarchenko4j.sh
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calculate_average_padreati.sh
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calculate_average_palmr.sh
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calculate_average_parkertimmins.sh
calculate_average_parkertimmins.sh
 
 

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1️⃣🐝🏎️ The One Billion Row Challenge

A C++ implementation of the orignal java challenge here: https://github.com/gunnarmorling/1brc

Discussion thread here: gunnarmorling#495

Example usage.

clang++-16 -O3 -std=c++20 -march=native -pthread main.cpp
THREADS=8 ./a.out

g++ should also work. You can also specify the number of "linear chunks" with CHUNKS env var. Unmaps will occur at end of each chunk. Default is 8.

CHUNKS=8 THREADS=8 ./a.out

About

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

www.morling.dev/blog/one-billion-row-challenge/

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