07.28.09
Posted in Uncategorized at 3:39 pm by Administrator
Amazon EC2 has impressed me and so has the simplicity of the Java programming API for Amazon EC2. However, today I hit a road bump while making steady progress using the amazon-ec2-2009-04-04-java-library. It seems the UserData of RunInstancesRequest should be Base64 encoded to retrieve it correctly on the instance after it is running. I did not find any easy to access documentation that describes this “gotcha” in otherwise easy to use library. Here is a small Java code snippet that worked for me.
RunInstancesRequest request = new RunInstancesRequest();
String myUserData = "blah-blah-blah";
byte[] charArray = myUserData.getBytes();
byte[] encodedData = org.apache.commons.codec.binary.Base64.encodeBase64(charArray, false);
request.setUserData(new String(encodedData));
service.runInstances(request);
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03.25.09
Posted in Uncategorized at 11:15 am by Administrator
My recent work has focused on the development of modeling infrastructure, particularly simplifying model traversals using XML programming idioms and strategic programming. Towards that end, my new paper titled LEESA: Embedding Strategic and XPath-like Object Structure Traversals in C++ will be published in the proceedings of IFIP Working Conference on Domain Specific Languages (DSL WC), 2009, Oxford, UK.
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12.03.08
Posted in Uncategorized at 11:34 pm by Administrator
A new paper on Adaptive Failover for Real-time Middleware with Passive Replication by Jaiganesh Balasubramanian, Sumant Tambe, Chenyang Lu, Aniruddha Gokhale, Christopher Gill, and Douglas C. Schmidt was accepted in the proceedings of the 15th IEEE Real-time and Embedded Technology and Applications Symposium (RTAS 2009).
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09.08.08
Posted in Uncategorized at 5:42 pm by Administrator
An Embedded Declarative Language for Hierarchical Object Structure Traversal was published at 2nd International Workshop on Domain-Specific Program Development (DSPD), GPCE 2008, Nashville, Tennessee, October 22, 2008.
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Posted in Uncategorized at 5:40 pm by Administrator
Towards A QoS Modeling and Modularization Framework for Component-based Systems was published at Advances in Quality of Service Management (AQuSerM) 2008, EDOC 2008 workshop, 18th September, 2008, Munich, Germany.
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06.06.08
Posted in Uncategorized at 4:20 pm by Administrator
Fedora Core 8 (kernel 2.6.24.7-92.fc8-i686) updates and VMware combination is very fragile. I installed 3 automatic updates (one was CUPS related update) to Fedora Core 8 today, which broke my NVIDIA graphics card kernel module configuration and followed by VMWare kernel module configuration. The update required rebooting the linux machine after which I found that X was not starting. Fixing NVIDIA graphics card problem was relatively straight forward. Simply downloading Linux drivers from their website did the trick. Fixing VMware module was a pain but I manged to fix it. I’m writing this blog entry here about my VMWare kernel module hack. There might be better solution out there but the following one is working for me for now.
VMware configuration script compiles one or more kernel module if it can’t find out-of-the-box. vmware-any-any-update117 patch is the latest one that I know of. I found that patch on vmkernelnewbies group on Google. However, it did not work out of the box for me. I had to patch bridge.c and filter.c files found in vmnet.tar file to get everything to compile nicely. The patched versions are archived in vmware-any-any-update117b.tgz available here. The same file is also available here. Hope that helps!
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01.16.08
Posted in Uncategorized at 1:43 pm by Administrator
Our new research paper on NetQoPE: A Model-driven Network QoS Provisioning Engine for Distributed Real-time and Embedded Systems was accepted in the Proceedings of the 14th IEEE Real-time and Embedded Technology and Applications Symposium (RTAS 2008), St. Louis, USA. This paper had several authors: Jaiganesh Balasubramanian, Sumant Tambe, Balakrishnan Dasarathy, Shrirang Gadgil, Frederick Porter, Aniruddha Gokhale, and Douglas C. Schmidt
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01.03.08
Posted in Uncategorized at 3:50 pm by Administrator
I passed EECS department preliminary examinations (prelims in short) in December last year. Topic of my presentation was “State-of-the-art in Publish/Subscribe Middleware for Supporting Mobility”. Here is a copy of my survey paper.
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05.24.07
Posted in Uncategorized at 7:10 pm by Administrator
I presented a paper in ISAS 2007 in University of New Hampshire, Durham. The title of the paper is MDDPro: Model-Driven Dependability Provisioning in Enterprise Distributed Real-time and Embedded Systems Here are the slides that I presented at the conference on 22nd May 2007.
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