Unified Shared Memory¶
Unified shared memory provides a pointer-based alternative to the buffer and accessor programming model. It provides both explicit and implicit models for managing memory. In the explicit model, programmers are responsible for specifying when data should be copied between memory allocations on the host and allocations on a device. In the implicit model, the underlying runtime and device drivers are responsible for automatically migrating memory between the host and a device.
Since unified shared memory does not rely on accessors, dependencies
between operations must be specified using events. Programmers may
either explicitly wait on event objects or use the
method inside a command group to specify a list of events that must
complete before a task may begin.