Function: set_context

Description

Sets the context of a thread.

Prototype

• C Prototype

  1	aclError aclrtSetCurrentContext(aclrtContext context)

• Python Function

  1	ret = acl.rt.set_context(context)

Parameters

Return Value

Restrictions

• The following scenarios are supported:
  • If you explicitly create a context (for example, ctx1) by using the acl.rt.create_context call in a thread (for example, thread1), you do not need to call acl.rt.set_context to specify the context bound to the calling thread. ctx1 is bound to thread1 by default.
  • If acl.rt.create_context is not called to explicitly create a context, the default context is bound to the calling thread. In this case, the default context cannot be destroyed by using the acl.rt.destroy_context call.
  • If acl.rt.set_context is called for multiple times to set the context of the thread, the last setting applies.
• If the device corresponding to the context set for the thread has been reset, the context cannot be set as the thread context. Otherwise, exceptions may occur.
• It is recommended that the context created in a thread be used in the thread. If thread A calls acl.rt.create_context to create a context and thread B uses this context, you need to ensure the tasks execution sequence of the two threads that are in the same stream of the same context.