SetHcclContext

Product	Supported
Atlas 350 Accelerator Card	x
Atlas A3 training product/Atlas A3 inference product	√
Atlas A2 training product/Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	x
Atlas inference product AI Core	√
Atlas inference product Vector Core	√
Atlas training product	x

Sets the context (message area) address of each communicator of an MC2 operator.

template <uint32_t index>
__aicore__ inline void SetHcclContext(__gm__ uint8_t* context)

**Table 1** Parameters
Parameter	Description
index	A template parameter, which indicates the communicator ID to be set. Currently, only two communicators are supported. index can be 0 or 1.
context	Context (message area) address of a communicator.

None

Currently, a maximum of two communicators are supported.

// Set the message area address for GROUP_0.
AscendC::SetHcclContext<0>(contextGM);

Parent topic: HCCL Context