await/sync, Task, Future) Focus of the talk 12 - CPU-tasks - Throughput optimized - Preemptive scheduling 1001 forms of multithreading Hardware vs Software multithreading Data parallelism, Task parallelism - API: futures? (in Nim “Flowvar” to distinguish from IO-tasks futures) - Synchronization - Scheduling overhead - Thread-safe memory management 16 Dataflow parallelism - Alternative names - Pipeline Sources of overhead And “Implementation details” Characterizing performance of a runtime 4 22 Scheduling overhead 23 Context switching is costly Context switching to the kernel (syscall, creating threads)

the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0

the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.

in the appendix titled Changes for Nim 2.0. Note that incremental compilation (IC) or CPS task scheduling (Continuation-passing style) is still in development and not yet fully supported by Nim v2.0.