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🆕 Java+64 bits lists for BitPacking, VSimple, VByte, Elias Fano,…

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powturbo
2015-06-18 17:59:03 +02:00
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README.md
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@ -6,13 +6,13 @@ TurboPFor: Fastest Integer Compression [![Build Status](https://travis-ci.org/po
- Direct Access is several times faster than other libraries
- Usage in C/C++ as easy as memcpy
- :new: Integrated differential encoding/decoding for sorted integer lists
- Full range 16/32 and :sparkles: 64 bits integer lists
- Full range 16/32 and :new: 64 bits integer lists
- :+1: Java Critical Native Interface. Access TurboPFor incl. SIMD from Java as fast as calling from C.
<p>
+ **Features**
- Scalar **"Variable Byte"** faster and more efficient than any other implementation
- :sparkles: Scalar **"Variable Byte"** faster and more efficient than any other implementation
<p>
- **Novel** **"Variable Simple"** faster than simple16 and more compact than simple8-b
- :sparkles: **Novel** **"Variable Simple"** faster than simple16 and more compact than simple8-b
<p>
- Scalar **"Bit Packing"** decoding as fast as SIMD-Packing in realistic (No "pure cache") scenarios
- Bit Packing with **Direct/Random Access** without decompressing entire blocks
@ -33,7 +33,7 @@ TurboPFor: Fastest Integer Compression [![Build Status](https://travis-ci.org/po
- :new: **Novel** Implicit skips with zero extra overhead
- :new: **Novel** Efficient **Bidirectional** Inverted Index Architecture (forward/backwards traversal).
- more than **2000! queries per second** on GOV2 dataset (25 millions documents) on a **SINGLE** core
- :sparkles: Parallel Query Processing on Multicores w/ more than **7000! queries/sec** on a quad core PC.<br>
- :new: Parallel Query Processing on Multicores w/ more than **7000! queries/sec** on a quad core PC.<br>
**...forget** ~~Map Reduce, Hadoop, multi-node clusters,~~ ...
### Benchmark:
@ -58,10 +58,11 @@ CPU: Sandy bridge i7-2600k at 4.2GHz, gcc 5.1, ubuntu 15.04, single thread.
| 99.910.930| 24.98| 7.99|**2603.47**|**1948.65**|**TurboPackV**|
| 99.910.930| 24.98| 7.99| 2524.50|1943.41|SIMDPack FPF|
| 99.910.930| 24.98| 7.99| 1883.21|1898.11|**TurboPack**|
| 99.910.930| 24.98| 7.99| 1877.25| 935.83|**TurboPackDA**|
| 99.910.930| 24.98| 7.99| 1877.25| 935.83|**TurboForDA**|
|102.074.663| 25.52| 8.17| 1621.64|1694.64|**TurboVbyte**|
|102.074.663| 25.52|8.17|1214.12|1688.95|MaskedVByte|
|102.074.663| 25.52| 8.17| 1178.72| 949.59|Vbyte FPF|
|103.035.930| 25.76| 8.24| 1480.47|1746.51|ForLib|
|112.500.000| 28.12| 9.00| 305.85|1899.15|VarintG8IU|
|400.000.000|100.00|32.00| 1451.11|1493.46|Copy|
| | | | N/A | N/A |**EliasFano**|
@ -89,9 +90,12 @@ TurboPForDA,TurboPackDA: Direct Access is normally used when accessing individua
| 4.953.768.342| 20.71| 6.63|**1766.05**|**1943.87**|**TurboPackV**|
| 4.953.768.342| 20.71| 6.63|1419.35|1512.86|**TurboPack**|
| 5.203.353.057| 21.75| 6.96|1560.34|1806.60|SIMDPackD1 FPF|
| 6.221.886.390| 26.01| 8.32|1666.76|1737.72|**TurboFor**|
| 6.221.886.390| 26.01| 8.32|1660.52| 565.25|**TurboForDA**|
| 6.699.519.000| 28.01| 8.96| 472.01| 495.12|Vbyte FPF|
| 6.700.989.563| 28.02| 8.96| 728.72| 991.57|MaskedVByte|
| 7.622.896.878| 31.87|10.20| 208.73|1197.74|VarintG8IU|
| 8.594.342.216| 35.93|11.50|1307.22|1593.07|ForLib|
|23.918.861.764|100.00|32.00|1456.17|1480.78|Copy|
lz4 w/ delta+transpose similar to delta+[blosc](https://github.com/Blosc/c-blosc)
@ -208,6 +212,7 @@ using [900.000 multicore servers](https://www.cloudyn.com/blog/10-facts-didnt-kn
>*run queries in file "1mq.txt" over the index of all gov2 partitions "gov2.sorted.s00.i - gov2.sorted.s07.i".*
### Function usage:
See benchmark "icbench" program for usage examples.
In general encoding/decoding functions are of the form:
@ -229,14 +234,14 @@ In general encoding/decoding functions are of the form:
b : number of bits. Only for bit unpacking functions<br />
start : previous value. Only for integrated delta decoding functions*
header files to use with documentation :<br />
header files to use with documentation:<br />
| header file|Functions|
|------|--------------|
|vint.h|variable byte|
|vsimple.h|variable simple|
|vp4dc.h, vp4dd.h|TurboPFor|
|bitpack.h bitunpack.h|Bit Packing|
|bitpack.h bitunpack.h|Bit Packing, For, +Direct Access|
|eliasfano.h|Elias Fano|
### Environment:
@ -254,10 +259,11 @@ header files to use with documentation :<br />
+ [Optimized Pfor-delta compression code](http://jinruhe.com): PForDelta: OptPFD or OptP4, Simple16
+ [MaskedVByte](http://maskedvbyte.org/). See also: [Vectorized VByte Decoding](http://engineering.indeed.com/blog/2015/03/vectorized-vbyte-decoding-high-performance-vector-instructions/)
+ [Document identifier data set](http://lemire.me/data/integercompression2014.html)
+ [Libfor](https://github.com/cruppstahl/for): Forlib
+ **Publications:**
- [SIMD Compression and the Intersection of Sorted Integers](http://arxiv.org/abs/1401.6399)
- [Partitioned Elias-Fano Indexes](http://www.di.unipi.it/~ottavian/files/elias_fano_sigir14.pdf)
- [On Inverted Index Compression for Search Engine Efficiency](http://www.dcs.gla.ac.uk/~craigm/publications/catena14compression.pdf)
- [Google's Group Varint Encoding](http://static.googleusercontent.com/media/research.google.com/de//people/jeff/WSDM09-keynote.pdf)
Last update: 17 JUN 2015
Last update: 18 JUN 2015