CUDASTDSingleTask Include the Header CUDASTDSingleTask_1CUDASTDSingleTaskIncludeTheHeader Run a Task with a Single Thread CUDASTDSingleTask_1CUDASTDSingleTaskRunATaskWithASingleThread Taskflow provides a standard template method for running a callable using a single GPU thread. You need to include the header file, taskflow/cuda/algorithm/for_each.hpp, for creating a single-threaded task. #include<taskflow/cuda/algorithm/for_each.hpp> You can launch a kernel with only one GPU thread running it, which is handy when you want to set up a single or a few variables that do not need multiple threads. The following example creates a single-task kernel that sets a device variable to 1. tf::cudaStreamstream; tf::cudaDefaultExecutionPolicypolicy(stream); //launchthesingle-taskkernelasynchronouslythroughthepolicy tf::cuda_single_task(policy,[gpu_variable]__device__(){ *gpu_Variable=1; }); //waitforthekernelcompletes stream.synchronize(); Since the callable runs on GPU, it must be declared with a __device__ specifier.