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Deterministic Execution on Many-Core platform
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Lecture Structure
- n Many core Example needs w r r Conclusion Critical embedded systems I (00:00:18)
- Many cure execution model Example needs r r experiments Critical embedded systems ll (00:02:03)
- a Many me e u model Example needs r r Conclusion Example of real time critical embedded (00:03:03)
- mm u i n me e e man Example was r r Conclusion System and task model (00:03:49)
- instance writes or reads its data in the buffers (00:03:49)
- Q C is the communication function it tells where each task (00:03:49)
- is a finite periodic task set is (00:03:49)
- variables and subjected to dependencies 72 (00:03:49)
- Current Core development process (00:05:47)
- Execution (00:05:47)
- ass gun em (00:05:47)
- Converter (00:05:47)
- i y analysis (00:05:47)
- o data (00:05:47)
- M Example needs r r experiments R mm 1 Multi Core issues for deterministic execution (00:07:50)
- In the end those processors have a relatively high average (00:07:50)
- o analysis may have a hard time to take into account (00:07:50)
- Shared memory multi core processors have a lot of drawbacks (00:07:50)
- Many we e u model Example needs r r Potential advantages of Many Core for (00:09:50)
- n Many we e e u mad Example needs r r experiments Conclusion Proposal for a Many Core execution model (00:14:10)
- when The Worst Case Traversal Time ca cu becomes (00:14:10)
- Q Explicit message passing only requirement (00:14:10)
- Q Periodic execution with local clock requirement (00:14:10)
- T P Law an A n Feedback E 5 (00:14:30)
- n Many me e u model needs r r Conclusion (00:15:08)
- Many Dr e m1 i nm needs r r Conclusion (00:15:45)
- Many e m1 i nm needs r r (00:15:46)
- FAS exam on going 0 Law Piloting A 1 F L I M2 YA Feedback (00:15:56)
- inn Many me e u model r r e s Conclusion FAS exam on going (00:16:13)
- Many we e u model needs r r experiments u Example of hand made static allocation (00:17:59)
- Many we e u model Example needs w r r Implementation issues on the (00:18:44)
- Q non blocking send receive because we need to control when data (00:18:44)
- minimize local memory consumption may even fit in (00:18:44)
- Q static allocation mapping allocate 1 bare metal task on a core and (00:18:44)
- 0 programming environment avoid as many OS (00:18:44)
- Many me e u model Example gens r r n Implementation issues on the II (00:20:43)
- Many we e e u i n Example needs r r experiments WC CT preliminary (00:22:12)
- o has a specification which consist of (00:22:12)
- o The standard k a defines the notion of (00:22:12)
- primer (00:22:12)
- Virtual Link (00:22:12)
- to measure the communication latency on each emulated (00:22:12)
- Mimics an Communication network Its main (00:22:12)
- n e m1 model Example needs r r Conclusion Configuration (00:23:53)
- Many we model Example needs r r Conclusion Basic needs (00:25:23)
- nu m inn Many me e m1 inn model Example needs r r e (00:26:08)
- o decide that some core is the master 0 (00:26:08)
- offset with respect to some master core (00:26:08)
- Many core execution model Example needs r r Conclusion Test drive anatomy (00:28:04)
- im1 e u Example needs r r Test drive Program anatomy I (00:28:13)
- Many me e u model Example needs r r Conclusion Test drive Program anatomy I (00:28:37)
- Many we e u model Example needs r r Conclusion (00:28:56)
- Q loop test duration has past (00:28:56)
- Q initialize the local L send schedule (00:28:56)
- 0 initialize global time (00:28:56)
- n Many we e e u am Example needs r r n Results with nominal setup (00:30:03)
- n Many we e e u am model Example needs r r Conclusion (00:30:04)
- Q loop test duration has past (00:30:04)
- Q barrier synchronize all core by waiting a message send by O (00:30:04)
- Q initialize the local L send schedule (00:30:04)
- initialize global time (00:30:04)
- Results with nominal setup (00:30:41)
- im1 Many me model Example needs r r Conclusion Results with 10x nominal setup (00:31:39)
- Many me e u model Example needs r r Conclusion (00:32:14)
- Many me e u i n model Example needs w r r (00:33:31)
- m Many me e m1 m E amp e needs r r Conclusion Conclusion (00:34:32)
- e u model Example needs r r experiments u i n Questions (00:35:37)
Keyword
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