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Kalyan Penta kalyanp

  • Arizona State University
  • United States
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# -*- coding: utf-8 -*-
"""
common-crawl-cdx.py
A simple example program to analyze the Common Crawl index.
This is implemented as a single stream job which accesses S3 via HTTP,
so that it can be easily be run from any laptop, but it could easily be
converted to an EMR job which processed the 300 index files in parallel.
@karpathy
karpathy / gist:587454dc0146a6ae21fc
Last active May 14, 2025 00:08
An efficient, batched LSTM.
"""
This is a batched LSTM forward and backward pass
"""
import numpy as np
import code
class LSTM:
@staticmethod
def init(input_size, hidden_size, fancy_forget_bias_init = 3):
@eamelink
eamelink / iteratees-by-example.scala
Created May 23, 2013 21:40
Scala-IDE worksheet with some examples of iteratees, enumerators and enumeratees and how to use and compose them. Originated from a presentation at Dutch Scala Enthusiasts.
import play.api.libs.iteratee._
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent._
import scala.concurrent.duration._
import play.api.libs.concurrent.Promise
object iteratees {
// Implicit conversion to add 'await' to a Future
implicit class WFuture[A](val inner: Future[A]) extends AnyVal {
@mbostock
mbostock / .block
Last active October 20, 2023 14:09
General Update Pattern, I
license: gpl-3.0
redirect: https://observablehq.com/@d3/selection-join
@KWMalik
KWMalik / interviewitems.MD
Created September 16, 2012 22:04 — forked from amaxwell01/interviewitems.MD
My answers to over 100 Google interview questions

##Google Interview Questions: Product Marketing Manager

  • Why do you want to join Google? -- Because I want to create tools for others to learn, for free. I didn't have a lot of money when growing up so I didn't get access to the same books, computers and resources that others had which caused money, I want to help ensure that others can learn on the same playing field regardless of their families wealth status or location.
  • What do you know about Google’s product and technology? -- A lot actually, I am a beta tester for numerous products, I use most of the Google tools such as: Search, Gmaill, Drive, Reader, Calendar, G+, YouTube, Web Master Tools, Keyword tools, Analytics etc.
  • If you are Product Manager for Google’s Adwords, how do you plan to market this?
  • What would you say during an AdWords or AdSense product seminar?
  • Who are Google’s competitors, and how does Google compete with them? -- Google competes on numerous fields: --- Search: Baidu, Bing, Duck Duck Go
@jboner
jboner / latency.txt
Last active November 3, 2025 07:01
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
@mikeyk
mikeyk / gist:1329319
Created October 31, 2011 22:56
Testing storage of millions of keys in Redis
#! /usr/bin/env python
import redis
import random
import pylibmc
import sys
r = redis.Redis(host = 'localhost', port = 6389)
mc = pylibmc.Client(['localhost:11222'])