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Decoding billions of integers per second through vectorization

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In many important applications -- such as search engines and relational database systems -- data is stored in the form of arrays of integers. Encoding and, most importantly, decoding of these arrays consumes considerable CPU time. Therefore, substantial effort has been made to reduce costs associated with compression and decompression. In particular, researchers have exploited the superscalar nature of modern processors and SIMD instructions. Nevertheless, we introduce a novel vectorized scheme called SIMD-BP128 that improves over previously proposed vectorized approaches. It is nearly twice as fast as the previously fastest schemes on desktop processors (varint-G8IU and PFOR). At the same time, SIMD-BP128 saves up to 2 bits per integer. For even better compression, we propose another new vectorized scheme (SIMD-FastPFOR) that has a compression ratio within 10% of a state-of-the-art scheme (Simple-8b) while being two times faster during decoding.

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  • URGENT EFFECTIVE LOVE-SPELL TO GET YOUR EX HUSBAND/WIFE BACK FAST CONTACT: MERCYFULLSOLUTIONHOME@GMAIL.COM , HE'S CERTAINLY THE BEST SPELL CASTER ONLINE, AND HIS RESULT IS 100% GUARANTEE . Thank LORD JUMA for bringing my Husband back to me. My Husband told me it was over and walk away without any reasons, I was confuse and didn't know what to do. I was desperate, I want him back, I went over the internet looking for ways to get my Husband back. I read about many different ways of how to but LORD JUMA caught my attention, I immediately contacted him and explained my problem to him. It was amazing and surprising that 11hrs after the spell was cast, my Husband called me and was begging me to forgive him and accept him back, Couldn't believe that it was happening some time later he came to my house and fell on his knees asking me to take him back which did. I am testifying on this forum just to let people know that LORD JUMA is real and genuine. don't hesitate to try him out. thank you LORD JUMA your such a kind man.. Contact him now if you need your Husband back or your husband moved to another woman, do not cry anymore .. Here’s his contact: Email him at: mercyfullsolutionhome@yahoo.com or mercyfullsolutionhome@gmail.com , you can also call him or add him on Whats-app: +1 (859)-203-2241 , you can also visit his website: http://mercyfullsolutionhome.blogspot.com/ KIMBERLY PORCH,N Y,USA.
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