bjhaid

For best results, you should read through the official NVIDIA documentation found on:

https://developer.nvidia.com/linux-tegra-rel-21

In particular, the Quick Start Guide.

For this process you will need:

• A host desktop or laptop computer running Ubuntu Linux 12.04 is officially recommended. In practice, this may be a virtual machine, I have used VirtualBox in the past. Also, I've successfully flashed from Ubuntu Linux 14.04. Your mileage may vary.
• Micro USB cable provided with the Jetson TK1 kit
• Jetson TK1 and power supply

bjhaid

Linux Hugepages

Hugepages are a hardware feature designed to reduce pressure on the translation lookaside buffer (TLB) for applications that operate on large contiguous memory regions.

Take a program that operates on a large 2MB internal structure as an example. If the program accesses that space in such a way that one byte in each regular 4k page is accessed, 2M/4k = 512 TLB entries are needed. Each TLB miss at the hardware level requires and interrupt and kernel intervention to resolve. However, if the allocation is backed by a 2M hugepage by mmap()ing with MAP_HUGETLB, only 1 TLB entry is required.

On x86_64, there are two hugepage sizes: 2MB and 1G. 1G hugepages are also called gigantic pages. 1G must be enabled on kernel boot line with hugepagesz=1G. Hugeages, especially 1G ones, should to be allocated early before memory fragments (i.e. at/near boot time) to increase the likelihood that they can be allocated successfully with minimal memory migration (i.e. defreg) required

bjhaid

package main

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"golang.org/x/sys/unix"
	"os"
	"syscall"
)

bjhaid

Endpoints

• http://onhub.here/api/v1/diagnostic-report
• http://onhub.here/api/v1/get-attestation-information
• http://onhub.here/api/v1/get-endorsement-information
• http://onhub.here/api/v1/get-shmac
• http://onhub.here/api/v1/join-group
• http://onhub.here/api/v1/prove-identity
• http://onhub.here/api/v1/register-device
• http://onhub.here/api/v1/prepare-for-setup

bjhaid

#!/bin/bash
#
#########################################################################
#This software code is made available "AS IS" without warranties of any #
#kind. You may copy, display, modify and redistribute the software      #
#code either by itself or as incorporated into your code; provided that #
#you do not remove any proprietary notices. Your use of this software   #
#code is at your own risk and you waive any claim against Amazon        #
#Digital Services, Inc. or its affiliates with respect to your use of   #
#this software code. (c) 2006-2007 Amazon Digital Services, Inc. or its #

bjhaid

package main

import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
)

func main() {

bjhaid

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

bjhaid

%%% -*- coding: utf-8; Mode: erlang; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
%%% ex: set softtabstop=4 tabstop=4 shiftwidth=4 expandtab fileencoding=utf-8:
%%%
%%%------------------------------------------------------------------------
%%% @doc
%%% ==Abstract Code Insertion==
%%% A method to get the abstract code representation directly from the
%%% binary beam module representation.
%%%
%%% Other methods could be used, but they are not as efficient.

bjhaid

DEPS = $(CURDIR)/deps

DIALYZER_OPTS = -Wunderspecs

# List dependencies that should be included in a cached dialyzer PLT file.
# DIALYZER_DEPS = deps/app1/ebin \
#                 deps/app2/ebin

DEPS_PLT = {{name}}.plt

bjhaid

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name: