Stream

class torch.xpu.Stream(device=None, priority=0, **kwargs)

Wrapper around a XPU stream.

A XPU stream is a linear sequence of execution that belongs to a specific device, independent from other streams.

Parameters

• device (torch.device or int, optional) – a device on which to allocate the stream. If device is None (default) or a negative integer, this will use the current device.

• priority (int, optional) – priority of the stream, should be 0 or negative, where negative numbers indicate higher priority. By default, streams have priority 0.

query()

Check if all the work submitted has been completed.

Returns

A boolean indicating if all kernels in this stream are completed.

record_event(event=None)

Record an event.

Parameters

event (torch.xpu.Event, optional) – event to record. If not given, a new one will be allocated.

Returns

Recorded event.

synchronize()

Wait for all the kernels in this stream to complete.

wait_event(event)

Make all future work submitted to the stream wait for an event.

Parameters

event (torch.xpu.Event) – an event to wait for.

wait_stream(stream)

Synchronize with another stream.

All future work submitted to this stream will wait until all kernels submitted to a given stream at the time of call complete.

Parameters

stream (Stream) – a stream to synchronize.