Fei Hu's Blog

To understand better by writing

Setup PyCharm For SystemML with PySpark

1. Install PySpark 1.1 Download Spark package 1.2 Set up SPARK_HOME at ~/.bash_profile export SPARK_HOME="/Users/mac/Documents/Software/spark-2.1.1-bin-hadoop2.7" export PATH="$SPARK_HOME/bin:...

Posted by on June 21, 2017

Yayoi Kusama Infinity Mirrors Exhibition

Yayoi Kusama: Infinity Mirrors is a celebration of the legendary Japanese artist’s sixty-five-year career and promises to be one of 2017s essential art experiences. Visi...

Posted by Fei Hu on April 15, 2017

Some Concepts in Convolutional Neural Network

Taken from http://cs231n.github.io/convolutional-networks/

Note: all the content comes from http://cs231n.github.io/convolutional-networks/ A simple ConvNet is a sequence of layers, and every layer of a ConvNet transforms one volume of activations to anot...

Posted by on October 1, 2016

Shrink the image to support smaller flavor

When snapshot an instance to get an image, the snapshot will keep the flavor information in the image. Then this image will require the disk size in the flavor for the new instance to be larger tha...

Posted by Fei Hu on August 13, 2016

Resize OpenStack Image

The image from OpenStack Snapshot is usually much bigger than the used disk in the virtual machine. That is because a snapshot is the entire disk, so the snapshot will be much bigger than the origi...

Posted by Fei Hu on June 22, 2016

RDO CentOS-7 Image SSH Password Issue for OpenStack

RDO provides a lot of images for OpenStack platform (https://www.rdoproject.org/resources/image-resources/, http://docs.openstack.org/image-guide/obtain-images.html), but when uploading CentOS7 ima...

Posted by Fei Hu on May 27, 2016

Network Issues in OpenStack Installation (Juno)

OpenStack Networking(neutron) is a pluggable, scalable and API-driven system for managing networks and IP addresses. It enables Network-Connectivity-as-a-Service for other OpenStack services, such ...

Posted by Fei Hu on August 9, 2015

Several Notes for Building A Blog with Github Pages and Jekyll

Several notes for building a blog with Github Pages and Jekyll username.github.io The username should be the same with the username of github Install Jekyll Ruby: ruby —version Bundl...

Posted by Fei Hu on August 1, 2015

How to set up Ubuntu14.04 firewall

Ubuntu does not start any firewall in default, so we had better set up some rules for the network in case of any safety issues. The following will make a short introductions about how to set up the...

Posted by Fei Hu on March 27, 2015