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aparrish / spacy_intro.ipynb
Last active August 9, 2023 01:41
NLP Concepts with spaCy. Code examples released under CC0, other text released under CC BY 4.0
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robert-stuttaford / datomic.clj
Last active April 27, 2018 15:10
Handy protocols for working with Datomic
;;; Connection
(defprotocol DatomicConnection
(as-conn [_]))
(extend-protocol DatomicConnection
(as-conn [c] c)
jboner / latency.txt
Last active July 17, 2024 03:12
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD