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Diffstat (limited to 'docs/multinpu.puml')
| -rw-r--r-- | docs/multinpu.puml | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/docs/multinpu.puml b/docs/multinpu.puml new file mode 100644 index 0000000..e5248b1 --- /dev/null +++ b/docs/multinpu.puml @@ -0,0 +1,82 @@ +@startuml + +skinparam backgroundColor #EEEBDC + +box "Application" #00C1DE +participant "main()" as app +end box + +box "Tensorflow" #FF6B00 +participant "TFLu" as tflu +participant "Ethos-U custom op" as custom +end box + +box "Ethos-U driver" #95D600 +participant "Driver" as driver +end box + +box "Hardware" #FFC700 +participant "Cortex-M" as cortexm +participant "Ethos-U" as ethosu +end box + +app -> tflu++: Invoke() + tflu -> custom++: Eval() + custom -> driver++: ethosu_reserve_driver() + loop Find and reserve driver + driver -> app++: ethosu_mutex_lock() + return + + driver -> driver: ethosu_find_and_reserve_driver() + + driver -> app++: ethosu_mutex_unlock() + return + + alt Found free driver + note over driver + Return free driver + end note + else No driver available + driver -> app++: ethosu_semaphore_take() + note over app + Block on semaphore + end note + return + end + end loop + return + + custom -> driver++: ethosu_invoke() + driver -\\ ethosu: Configure NPU and trigger inference + + driver -> driver++: wait_for_irq() + note over driver + Driver sleeping waiting for IRQ + end note + + ethosu -\\ cortexm: IRQ + cortexm -\\ driver: ethosu_irq_handler() + + note over driver + Driver woken up by IRQ handler + end note + return + return + + custom -> driver++: ethosu_release_driver() + driver -> app++: ethosu_mutex_lock() + return + + driver -> app++: ethosu_semaphore_give() + note over app + Wake up threads blocking on the semaphore + end note + return + + driver -> app++: ethosu_mutex_unlock() + return + return + return +return + +@enduml |