__syncthreads() does in CUDA: synchronizes all threads within a block

Thread block (CUDA programming)

Thread blocks can contain up to 1024 threads as of March 2010

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AtomicAdd adds values to shared or global memory atomically

cooperative groups enable in CUDA: flexible thread synchronization patterns

Cooperative groups enable flexible thread synchronization patterns in CUDA

CUDA

CUDA enables parallel computation on GPUs

Triton differs from CUDA

Triton uses block-level programming, while CUDA uses thread-level programming

Parallel Thread Execution

PTX is an intermediate GPU instruction set used in Nvidia's CUDA