CUDASTDSingleTask

# Single Task

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.

# Include the Header

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>

# Run a Task with a Single Thread

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.