CreateHcclComm

Description

Creates a single-server multi-device communicator in rootInfo mode when the backend is HCCL.

Definition

namespace atb {
using void *HcclComm;
namespace Comm {
HcclComm CreateHcclComm(int32_t rank, int32_t rankRoot, int32_t rankSize, char *commName);
}; // namespace Comm
} // namespace atb

Parameters

Member	Input/Output	Type	Default Value	Description
rank	Input	int32_t	-	Rank of the current device within the communicator.
rankRoot	Input	int32_t	-	Root rank for the operation.
rankSize	Input	int32_t	-	Number of devices.
commName	Output	char *	-	Communicator name.

Constraints

rank, rankSize, and rankRoot must meet the following conditions:

0 ≤ rank < rankSize
0 ≤ rankRoot < rankSize

Only Atlas A2 training products/Atlas A2 inference products and Atlas A3 inference products/Atlas A3 training products are supported.

Parent topic: atb/comm.h