Jeff Plaisance

[Jeff Plaisance @jeffplaisance]

@geofflangdale Yep, and the "interpreter-like" approach is generally what is done, but in many circumstances it leaves a lot of performance on the table over human-written SIMD code for the specific query. RTCG has its own issues though, like balancing compilation time against execution time.

[Jeff Plaisance @jeffplaisance]

@geofflangdale On a related note, do you happen to know why _mm512_mask_compressstoreu_epi8 is way slower than _mm512_maskz_compress_epi8 followed by _mm512_mask_storeu_epi8 on zen 4 (and possibly other microarchitectures?)

[Jeff Plaisance @jeffplaisance]

@EmilStenstrom @lemire @Love2Code the "hot path" is a myth. you should read this post, written by the guy you are replying to: https://t.co/bTFxuBCeZu

[Jeff Plaisance @jeffplaisance]

I've open sourced my B++ Trees library, which is a B+ tree library that I wrote in C++.
It can be used as a normal B+ tree, but it also has optional mixins that can be used to access elements by index, calculate prefix sums, or find the min/max element
https://t.co/OnPZKVfRvx

[Jeff Plaisance @jeffplaisance]

@xeraa @fulmicoton @papers_we_love there is a third option of using userfaultfd and madvise to get the benefits of hardware accelerated virtual address resolution with more control over eviction than is possible with mmap. still has some of the downsides of both but could be the right tradeoff for many systems.

[Jeff Plaisance @jeffplaisance]

@GrahamJenson @ohunt if you squint at it hard enough it's just insertion sort with some extra unnecessary steps. it still works if the inner loop goes from 0..i although the intermediate steps turn out a bit different.

[Jeff Plaisance @jeffplaisance]

@seldo @DavidKrakov vega-lite (https://t.co/OPOVWQO2Qk) is kind of this for individual visualizations, although to my knowledge it's not widely adopted across tools

[Jeff Plaisance @jeffplaisance]

@fulmicoton not sure but the best source for this type of info is the intel optimization manual

[Jeff Plaisance @jeffplaisance]

@DGWorldTour @JussiMeresmaa Thanks so much for resolving the signup issue for the international players at the European Amateur Open!

[Jeff Plaisance @jeffplaisance]

@JussiMeresmaa Annoyed about European Amateur Open signup. Site said it opened at 3 pm CEST but it was full by 2:45. Wrong timezone on site.

[Jeff Plaisance @jeffplaisance]

@DGWorldTour Annoyed about European Amateur Open signup. Site said it opened at 3 pm CEST but it was full by 2:45. You put wrong timezone.

[Jed Kolko @JedKolko]

Planning your exit? Job searches on @indeed to Canada were up 10x in the hours after election was called.

[Indeed Engineering @IndeedEng]

@jeffplaisance et al present a paper on a faster decoder for VByte-compressed data. Read more: http://t.co/XzvvouGoze #CompSci

[Jeff Plaisance @jeffplaisance]

@jedisct1 Revised answer: HDFS support isn't done in the open source version yet. This file https://t.co/J45IhP4sa8 needs to be filled in.

[Jeff Plaisance @jeffplaisance]

@jedisct1 Yes the docs only cover AWS setup right now but we will be adding instructions for non-AWS installations in the future.

[Jeff Plaisance @jeffplaisance]

@jedisct1 Yes it can, it can use HDFS as an alternative to S3 for shard storage.

[Jeff Plaisance @jeffplaisance]

Proud to annouce that Indeed has open sourced our distributed analytics and machine learning platform, Imhotep. http://t.co/hujX4m7z0t

[Jeff Plaisance @jeffplaisance]

@doug_gray @naelyn @IndeedEng SSSE3 is my favorite instruction set but AVX2 is a close second

[Jeff Plaisance @jeffplaisance]

my twitter got haxed... some of that stuff was kind of offensive but it wasn't me :(