Simon Morgan drguildo

"Scar Tissues Make Relationships Wear Out"

04/26/2103. From a lecture by Professor John Ousterhout at Stanford, class CS142.

This is my most touchy-feely thought for the weekend. Here’s the basic idea: It’s really hard to build relationships that last for a long time. If you haven’t discovered this, you will discover this sooner or later. And it's hard both for personal relationships and for business relationships. And to me, it's pretty amazing that two people can stay married for 25 years without killing each other.

[Laughter]

> But honestly, most professional relationships don't last anywhere near that long. The best bands always seem to break up after 2 or 3 years. And business partnerships fall apart, and there's all these problems in these relationships that just don't last. So, why is that? Well, in my view, it’s relationships don't fail because there some single catastrophic event to destroy them, although often there is a single catastrophic event around the the end of the relation

	First mail I ever got from Jeff:

	----

	From: Jeff Roberts
	Subject: dude!
	To: Fabian "ryg" Giesen
	Date: 5/17/2009 2:42PM

	Hey, man - I don't think we have ever talked before directly!

	Latency Comparison Numbers (~2012)
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	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

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	# Multi-instance Apache Tomcat installation with a focus
	# on best-practices as defined by Apache, SpringSource, and MuleSoft

	#!/bin/bash

	while read link; do if [ ! -f "$(basename $link)" ]; then wget $link; fi; done < GDMAG.txt