CANN/hcomm获取通道通知数API

HcommChannelGetNotifyNum

【免费下载链接】hcommHCOMM（Huawei Communication）是HCCL的通信基础库，提供通信域以及通信资源的管理能力。项目地址: https://gitcode.com/cann/hcomm

产品支持情况

• Ascend 950PR/Ascend 950DT：支持
• Atlas A3 训练系列产品/Atlas A3 推理系列产品：不支持
• Atlas A2 训练系列产品/Atlas A2 推理系列产品：不支持

功能说明

获取指定channel的Notify数量。

函数原型

HcommResult HcommChannelGetNotifyNum(ChannelHandle channelHandle, uint32_t *notifyNum)

参数说明

返回值

HcommResult：接口成功返回0，其他失败。

约束说明

支持的通信协议包括：RoCE、UBC_TP、UBC_CTP。

调用示例

// AI CPU 引擎需要DEVICE类型的端点 EndpointDesc deviceEp = {0}; deviceEp.protocol = COMM_PROTOCOL_ROCE; deviceEp.commAddr.type = COMM_ADDR_TYPE_IP_V4; inet_pton(AF_INET, "192.168.1.10", &deviceEp.commAddr.addr); deviceEp.loc.locType = ENDPOINT_LOC_TYPE_DEVICE; deviceEp.loc.device.devPhyId = 0; deviceEp.loc.device.superPodId = 0; EndpointHandle endpointHandle = nullptr; HcommResult ret = HcommEndpointCreate(&deviceEp, &endpointHandle); if (ret != 0) { printf("Failed to create device endpoint, ret = %d\n", ret); return ret; } // 准备通道描述符 const uint32_t CHANNEL_NUM = 3; HcommChannelDesc channelDescs[CHANNEL_NUM] = {0}; for (uint32_t i = 0; i < CHANNEL_NUM; i++) { // 填充远端端点信息 channelDescs[i].remoteEndpoint.protocol = COMM_PROTOCOL_ROCE; channelDescs[i].remoteEndpoint.commAddr.type = COMM_ADDR_TYPE_IP_V4; char remoteIp[32] = {0}; snprintf(remoteIp, sizeof(remoteIp), "192.168.2.%d", i + 1); inet_pton(AF_INET, remoteIp, &channelDescs[i].remoteEndpoint.commAddr.addr); channelDescs[i].remoteEndpoint.loc.locType = ENDPOINT_LOC_TYPE_DEVICE; channelDescs[i].remoteEndpoint.loc.device.devPhyId = i + 1; channelDescs[i].notifyNum = 32; // RoCE参数 channelDescs[i].roceAttr.queueNum = 16; channelDescs[i].roceAttr.retryCnt = 5; } // 创建AI CPU引擎的通道 ChannelHandle channels[CHANNEL_NUM] = {0}; ret = HcommChannelCreate(endpointHandle, COMM_ENGINE_AICPU, channelDescs, CHANNEL_NUM, channels); if (ret != 0) { printf("Failed to create AICPU channels, ret = %d\n", ret); HcommEndpointDestroy(endpointHandle); return ret; } uint32_t *notifyNum; ret = HcommChannelGetNotifyNum(channels[0], notifyNum);

【免费下载链接】hcommHCOMM（Huawei Communication）是HCCL的通信基础库，提供通信域以及通信资源的管理能力。项目地址: https://gitcode.com/cann/hcomm