Alexey Bokov's weblog

“They’ll ask abt ur skillz and propr kmand of ze English lng” 🙂 Continue reading ‘Job interview via facebook – they’ll ask abt ur skillz and propr kmand of ze English lng’ »

Okay, we have text file with list of urls and want to have firefox’s screenshots from this pages and also we need to have this screenshots in some normalized resolution ( like all images should be in 300×400 – thumbnails ). First of all you need to install Command line print Firefox add-on. Then create some simple script which will run firefox with needed url, print screenshot and close ( in my case via kill – may be it’s too brutal ) firefox in cycle. It may look like this ( url_list.txt – file with urls – each url on its own line :-)), after running this script you will have many *.png files which is screenshots for ulrs – 0.png – for first url in urls_list.txt, 1.png for second and so on.

#!/bin/bash
id=0
while read line
do
firefox -print $line -printmode png -printdelay 10 -printfile ${id}.png
ps ax | grep firefox | awk '{ print $1 }' | xargs kill -9 ;
id=$[$id+1]
done < urls_list.txt


And now then we have screenshots ( all this guys are in different resolution in common ) then we need to normalize them – to create thumbnails for all images in 300×400 resolution – convert helps!

for f in *.png;
do
convert -thumbnail 300x400! ${f} thumb_${f}
done

And we have many thumb_*.pn with 300×400 resolution all. A little note – using resolution without ! sign will work in another way – resize will be processed proportionally with using resize only for one dimension ( bigger one ).

• Ten Tips for a (Slightly) Less Awful Resume
• How To Sell Agile To Fixed Bid Contract Clients
• AWS Launches Cluster Compute EC2 Instances For High Performance Applications and AWS – High Performance Computing (HPC)

• Mapreduce & Hadoop Algorithms in Academic Papers (3rd update), especially Scaling Up Classifiers to Cloud Computers
• TeamBox – project collaboration tool
• Continuous Integration for C++ by Rick Wagner
• Beyond Position Bias: Examining Result Attractiveness as a Source of Presentation Bias… Yue, Patel, Roehrig, WWW-2010

.. to be continued

The US military has announced plans to buy 2,200 more of the game consoles, so that they can massively beef up the processing power of an existing, PS3-based supercomputer. A “Justification Review Document,” which has oddly been deleted from Google since I found it but is still available at this cache link, explains that, “the new PS3s will be placed in a cluster environment with an existing cluster of 336 PS3s by connecting each of the units’ one gigabit Ethernet port to a common 24 port gigabit hub.”
via arstechnica.com

Distributed, non-relational database systems – DNRDBMS – see

• The Future Is Big Data in the Cloud
• NoSQL – the new wave against RDBMS

Grid Dynamics nominated “2009 Top 150 Cloud Computing Players” by Cloud Computing Journal. Look at letter G – here we are, around Google. ;-).

• Cloud Hosting Performance
• Measuring EC2 system performance
• Comparing Amazon EC2 performance with other cloud/VPS hosting options… and real hardware
• Monitoring Cloud Computing Performance with PRTG: CPU, Disk, Memory Speed Comparison of Amazon EC2 Instance Types
• Posted by Alexey Bokov on August 18, 2009 at 5:47 pm under administration, compute grid, internet, useful links.
  Tags: administration, Amazon EC2, gogrid, work
  Comment on this post.