If you're one of the 8 people in the world interested in superoptimisation, I'll be doing a short talk on it, and what I've found at the Brighton Java meetup tonight.
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Hello you. I'm a 38-year old MSc student, studying Advanced Computer Science at Sussex University. I'm especially interested in Internet and mobile software, sensors and pervasive computing, user interfaces, and the process of developing great software.
Before that I spent 11 years running Future Platforms, a software company I co-founded which makes lovely things for mobile phones, and which I sold in 2011.
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« Output from the Master's | Main | Needz launches »
September 05, 2012
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Hey, I really enjoyed this talk! I had a thought recently: was the optimisation of the number of instructions to the JVM, or the actual processor instructions? I think it's probably the former. It'd be interesting to see how the JVM instructions map to actual instructions on the bare metal. I think you might have mentioned about getting a real world benchmark, but it was too difficult with a virtual machine.
All the best,
Alex
Posted by: Alex | September 10, 2012 at 12:08 PM
Alex, glad you enjoyed it. I was talking about the former, generating JVM instructions. It's hard-to-impossible to measure machine instructions with a modern JVM, I suspect: byte code to machine code may not be a 1:1 mapping, and may be an inconsistent mapping if a JIT compiler is in the mix.
Posted by: tom hume | September 11, 2012 at 10:37 AM