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Background Optimization in Full System Binary Translation

Background Optimization in Full System Binary Translation Roman Sokolov Alexander Ermolovich MCST Intel

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Background Optimization in Full System Binary Translation

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  1. Background Optimization in Full System Binary Translation Roman Sokolov Alexander Ermolovich MCST Intel Presentation for 5th Spring/Summer Young Researchers‘ Colloquium on Software Engineering (SYRCoSE), May 12-13, 2011

  2. Elbrus Binary Translation Technology for IA-32 Compatibility Full system binary translation Application-level binary translation IA-32 Applications Native Applications IA-32 Applications IA-32 BIOS, OS & Libraries App level BT Native BIOS, OS & Libraries Full System BT HW HW

  3. Adaptive binary translation (1/2)

  4. Adaptive binary translation (2/2) Profile of dynamic binary translation

  5. Dynamic optimization vs. Latency

  6. Background optimization Our Approach • Optimizing translation is separated in a different thread (optimization thread), that can run simultaneously with the main execution thread. • Hot regions are detected by the execution thread and are then scheduled to be optimized in background by the optimization thread. • Single-core • Optimization is interleaved with execution • Benefits • Improves application’s execution latency Dual(many)-core • Optimization is moved onto underutilized processor core • Benefits • Improves application’s execution latency • Removes overhead from the application’s execution • Enables the application of more aggressive optimizations.

  7. Single-core background optimization (1/3)

  8. Single-core background optimization (2/3) Latency improvement (CPU frequency = 300 MHz; thread time slice= 50000 cycles)

  9. Single-core background optimization (3/3) Performance degradation

  10. Dual-core background optimization (1/2)

  11. Dual-core background optimization (2/2) Performance improvement

  12. Future works Source architecture multiprocessor system emulation IA-32 Applications IA-32 Applications IA-32 BIOS, OS & Libraries IA-32 BIOS, OS & Libraries Full System BT Full System BT Core0: Exec Core1: Opt HW Full System BT Core0: Exec Core1: Opt

  13. Q&A

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