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32 lines
1.2 KiB
TeX
32 lines
1.2 KiB
TeX
\pagebreak
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\chapter{Asynchronous Execution of a \code{target} Region Using Tasks}
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\label{chap:async_target}
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The following example shows how the \code{task} and \code{target} constructs
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are used to execute multiple \code{target} regions asynchronously. The task that
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encounters the \code{task} construct generates an explicit task that contains
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a \code{target} region. The thread executing the explicit task encounters a task
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scheduling point while waiting for the execution of the \code{target} region
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to complete, allowing the thread to switch back to the execution of the encountering
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task or one of the previously generated explicit tasks.
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\cexample{async_target}{1c}
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The Fortran version has an interface block that contains the \code{declare} \code{target}.
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An identical statement exists in the function declaration (not shown here).
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\fexample{async_target}{1f}
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The following example shows how the \code{task} and \code{target} constructs
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are used to execute multiple \code{target} regions asynchronously. The task dependence
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ensures that the storage is allocated and initialized on the device before it is
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accessed.
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\cexample{async_target}{2c}
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The Fortran example uses allocatable arrays for dynamic memory on the device.
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\fexample{async_target}{2f}
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