Attach

For details about the mapping between Ascend AI Processors and Ascend products, see Ascend Product Form Description.

Product	Supported
Atlas A3 training product/Atlas A3 inference product	x
Atlas A2 training product/Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	x
Atlas inference product	√
Atlas training product	x

For Atlas A2 training product/Atlas A2 inference product, only Atlas 800I A2 inference products are supported.

For Atlas inference product, only the Atlas 300I Duo inference card and Atlas 800 inference server (model 3000) are supported.

Adds Trace information to the current context.

size_t Attach(const TraceId traceId, const SpanId spanId, const bool isSample = true)

**Table 1** Parameters
Parameter	Input/Output	Description
traceId	Input	Trace ID.
spanId	Input	Span ID.
isSample	Input	Sampling or not; defaults to true.

Returns the context index, which is used to call the API in Unattach.

Parent topic: TraceContext Class