| Presentation | 2012-01-25 Extension of ITRON Specification OS for Multithreaded Processors Rikuhei UEDA, Kei FUJII, Hiroyuki CHISHIRO, Hiroki MATSUTANI, Nobuyuki YAMASAKI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recent advances in embedded systems have demanded high-performance under real-time constraints. Responsive Multithreaded Processor (RMT Processor) employs prioritized Simultaneous Multithreading (SMT) architecture with hardware-assisted context switch for such high-end embedded systems. In this paper, Hyper Operating System, which is a real-time OS based on ITRON specification, is extended to support multithread processing on RMT Processor. RMT Processor specific instructions are used for task creation and dispatch, and three types of locks (task, object, and queue) are used to implement synchronization between threads. A dedicated thread is assigned for interrupt processing in order to maintain the worst-case interrupt response time when the number of threads executed simultaneously increases. Execution times of the extended service calls for the multithread processing are evaluated and compared with those of the original service calls. We also show that the dedicated thread for interrupts can maintain the interrupt response time. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Embedded Systems / Real-Time OS / ITRON / RMT Processor / SMT |
| Paper # | VLD2011-98,CPSY2011-61,RECONF2011-57 |
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| Conference Information | |
| Committee | RECONF |
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| Conference Date | 2012/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Reconfigurable Systems (RECONF) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Extension of ITRON Specification OS for Multithreaded Processors |
| Sub Title (in English) | |
| Keyword(1) | Embedded Systems |
| Keyword(2) | Real-Time OS |
| Keyword(3) | ITRON |
| Keyword(4) | RMT Processor |
| Keyword(5) | SMT |
| 1st Author's Name | Rikuhei UEDA |
| 1st Author's Affiliation | Department of Information and Computer Science, Faculty of Science and Technology, Keio University() |
| 2nd Author's Name | Kei FUJII |
| 2nd Author's Affiliation | Department of Computer Science, Graduate School of Science and Technology, Keio University |
| 3rd Author's Name | Hiroyuki CHISHIRO |
| 3rd Author's Affiliation | Department of Computer Science, Graduate School of Science and Technology, Keio University |
| 4th Author's Name | Hiroki MATSUTANI |
| 4th Author's Affiliation | Department of Computer Science, Graduate School of Science and Technology, Keio University |
| 5th Author's Name | Nobuyuki YAMASAKI |
| 5th Author's Affiliation | Department of Computer Science, Graduate School of Science and Technology, Keio University |
| Date | 2012-01-25 |
| Paper # | VLD2011-98,CPSY2011-61,RECONF2011-57 |
| Volume (vol) | vol.111 |
| Number (no) | 399 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |