bzamecnik

Let's say we can a blog hosted as Wordpress.com but visible on our custom domain in subpath due to SEO. WordPress.com supports changing domain/subdomain but not path.

We could either make our own installation, change hosting provier or make nginx proxy with URL rewrites.

• WP blog: https://example.wordpress.com/
• Desired site: http://example.com/blog/

This tutorial is inpsired by http://marsbard.github.io/2016-07-30-replace-urls-behind-nginx-reverse-proxy/.

bzamecnik

# Works in Keras 2.1.0/2.2.0, TF 1.8!

import tensorflow as tf
from keras.datasets import mnist
from keras.models import Model
from keras.layers import Dense, Input, Conv2D, Flatten
from keras.utils import to_categorical
import numpy as np
import keras.backend as K

bzamecnik

How to compile TensorFlow for CPUs with AVX2/FMA instructions or using Intel MKL?

In this tutorial we compile TF for EC2 Xeon processors and get +76 % speedup for training CIFAR10 with ResNet. In practice this might be useful for speeding up CPU inference at AWS EC2 where a GPU instance would be too costly.

Brought to you by Rossum. We automate data extraction from documents using deep learning.

Which machines?

bzamecnik

"""
Prints HDF5 file tree.

Useful to inspect Keras weighs file.

Example usage:

python hdf5tree.py weights.h5
"""

bzamecnik

#!/usr/bin/env python
# Author: Bohumir Zamecnik, Yuxin Wu (original example mnist-keras.py)

import tensorflow as tf
from tensorflow import keras
KL = keras.layers

"""
An example asynchronous host-to-device memcpy using a Keras model + Tensorpack.

bzamecnik

# Returns the next or all available GPU id(s), or -1 if all are busy.
# Usage:
#
# One GPU:
#
# $ CUDA_VISIBLE_DEVICES=$(available_gpu) train.sh
# 
# All GPUs (comma-separated):
#
# $ CUDA_VISIBLE_DEVICES=$(available_gpu) train.sh

bzamecnik

"""
Extracts original submission XML from digitally signed confirmation P7S
(Potvrzení o podání písemnosti) of the Czech tax return statement
(Daň z příjmů fyzických osob).

The confirmation is a sigitally signed XML file (P7S extension) and can be
opened using openssl (kudos to
[moldovan.IT blog](http://moldovan.it/blog/open-and-read-p7s-files-in-ubuntu-linux/)):

```

bzamecnik

/*
  Byte beats.

  More info: http://canonical.org/~kragen/bytebeat/

  Video: https://www.youtube.com/watch?v=gng2Gb0DHe4

  Circuit:
  - 8 ohm speaker on digital pin 2
    - max 0.25 W, 250 ohm resistor to keep current low

bzamecnik

bzamecnik

How to install RepetierHost via VNC on Ubuntu 16.04?

Imagine we have a Linux computer with a 3D printer and we want to control it remotely from a Mac.

• RepetierHost 2.0.5
• vnc4server

Installing RepetierHost

• https://www.repetier.com/documentation/repetier-host/rh-installation-and-configuration/