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Sumanth Bandi sumanth232

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@ahmedengu
ahmedengu / quantconnect_lean.ipynb
Last active October 14, 2021 12:54
Installing and running quantconnect lean on google colab ubuntu 18 python version
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@vasanthk
vasanthk / System Design.md
Last active June 27, 2024 01:45
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
@sumanth232
sumanth232 / partition.cpp
Last active November 1, 2015 16:12
A simple clean code for partitioning an array
/* Partition an array with 0s and 1s */
void partition(int* v, int n) {
int i=0, k=n;
while(i<k) {
if(v[i] == 0) i++;
else swap(v[i], v[--k]);
}
}
/* Partition step in Quicksort algorithm */
@samuelregev
samuelregev / 4.1 Start Network
Last active November 1, 2015 16:17
Mininet ex2
We started a network with 3 hosts, one switch and one controller
mininet@mininet-vm:~$ sudo mn --topo single,3 --mac --switch ovsk --controller remote
*** Creating network
*** Adding controller
Unable to contact the remote controller at 127.0.0.1:6633
*** Adding hosts:
h1 h2 h3
*** Adding switches:
@iHassan
iHassan / Galaxy Of Tutorial Torrents
Created February 11, 2015 01:20
Ultimate Galaxy Of Tutorial Torrents
=============================
**http://kickass.to/infiniteskills-learning-jquery-mobile-working-files-t7967156.html
**http://kickass.to/lynda-bootstrap-3-advanced-web-development-2013-eng-t8167587.html
**http://kickass.to/lynda-css-advanced-typographic-techniques-t7928210.html
**http://kickass.to/lynda-html5-projects-interactive-charts-2013-eng-t8167670.html
**http://kickass.to/vtc-html5-css3-responsive-web-design-course-t7922533.html
*http://kickass.to/10gen-m101js-mongodb-for-node-js-developers-2013-eng-t8165205.html
*http://kickass.to/cbt-nuggets-amazon-web-services-aws-foundations-t7839734.html
@ymyzk
ymyzk / gdb.rb
Created July 21, 2014 20:03
Homebrew formula of GDB with patch for OS X Yosemite
require "formula"
class UniversalBrewedPython < Requirement
satisfy { archs_for_command("python").universal? }
def message; <<-EOS.undent
A build of GDB using a brewed Python was requested, but Python is not
a universal build.
GDB requires Python to be built as a universal binary or it will fail
@jboner
jboner / latency.txt
Last active June 27, 2024 02:47
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