Friday, June 07, 2013

HTCondor version 8.0 Windows Installation


Friday, January 18, 2013

How to choose a Supercomputer

Forget about LINPACK and FLOP/s. It is the skin that matters. The next big thing should be the "Top500 Skin" ranking. Here are my top five:
 
 
 
Corollaries:
1. As can be seen the US maintains its dominance.
2. All vendors can try harder. How about consulting Italian car designers?
3. SC20 should take place at the Museum of Modern Art.

Friday, December 14, 2012

My RaspberryPi

RaspberryPi, a $35 toy or the next disruptive technology and a possible building block for HPC?
This credit card sized board has a ARM11 processor and 512MB RAM. The board is powered via a micro USB connector. It has two built-in USB sockets, Ethernet and HDMI video. A schematic drawing of model B which I have can be found here. I installed Raspbian Linux, an optimized Debian version for Raspberry, on a 4GB SD card. A cool gadget for triggering thoughts about the future of computing. Enclosed below a few pictures I took, enjoy!











Friday, July 13, 2012

Cyber Crime

The Internet is becoming impossible ... Very sad


Friday, February 10, 2012

The Importance of High-Performance and High-Throughput Computing in Israel

The slides of my talk at the HPC Advisory Council Israel Supercomputing Conference 2012 that took place on February 7th, 2012 at Tel-Aviv university are available from here.

Saturday, January 21, 2012

Virtual Cluster using VirtualBox

I tested the new HPC Europa Milestone 6 DVD and created a virtual cluster using VirtualBox on my laptop. I created a head-node and two computing nodes connected via a VLAN.  The head node has two network interfaces, NAT which enables the connection to the outside world and an internal virtual interface. The two computing nodes have only one network interface each for the VLAN.
In picture number 1 the VirtualBox dashboard is shown with the 3 running computers

Picture number 1: The VirtualBox dashboard showing the 3 running computers of the virtual cluster

Picture number 2: The desktop of the head node (left) and the two computing nodes (right)

In picture number two a PBS job executing a simple MPI task is demonstrated. The head node is on the left and the two computing nodes are on the right.
My general impression is that this Virtual Cluster is an excellent tool for education where the teacher and later on the students can experience Parallel Processing using their own laptops fairly easily.