Lecture 08: C++ Threads

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Announcement and recap

Code of the day: modulo a power of two

SIMD and SIMT

Shared-memory hardware and software workers

Thread versus process

Creating and joining C++ threads

Output calls are not an entire critical section

Case study: 250 images, 10 workers

Why the original loop races

Protect the claim, then process outside the lock

RAII and lock ownership

Scheduling and failure questions

Producer–consumer synchronization

Higher-level concurrency tools

Taskflow: express dependencies as a graph