有效NCCLCHECKGOTO(PtrCheck(config,"CommInitRank","config"),res,fail);// 检查配置结构体指针是否有效if(nranks<1||myrank<0||myrank>=nranks){// 验证输入参数WARN("Invalid rank requested : %d/%d",myrank,nranks);// 如果参数无效,输出警告res=ncclInvalidArgument;// 设置结果为无效参数错误gotof...
tuning运行中查看的环境变量: NCCL_DEBUG=INFO NCCL_DEBUG_SUBSYS=TUNING。 选用一个测试用例(参看:NCCL通信C++示例(一)),添加环境变量运行: NCCL_DEBUG=INFO NCCL_DEBUG_SUBSYS=TUNING ./one_device_per_thread 时延与算带宽日志 时延与带宽的日志打印代码位置在:ncclTopoTuneModel中: // c: 集群通信操作;a: ...
首先执行ncclNetIb的init函数，就是ncclIbInit。ncclResult_t ncclIbInit(ncclDebugLogger_t logFunction) { static int shownIbHcaEnv = 0; if(wrap_ibv_symbols() != ncclSuccess) { return ncclInternalError; } if (ncclParamIbDisable()) return ncclInternalError; if (ncclNIbDevs == -1) { ...
The NCCL_DEBUG_SUBSYS variable allows the user to filter the NCCL_DEBUG=INFO output based on subsystems. The value should be a comma separated list of the subsystems to include in the NCCL debug log traces. Prefixing the subsystem name with ‘^’ will disable the logging for that subsystem...
If you could share the NCCL_DEBUG=INFO log file we may be able to help determine the cause. i collected this log file on the master and worker nodes. nccl_master.log nccl_worker.log i also used ifstat to record the network usage during training. on master node ifstat -i enp37s0f0,...
{ unsigned int sleepTime = timeOut * attempts; ibvModifyQpLog(qp, attr->qp_state, attr, attr_mask, qpMsg, sizeof(qpMsg)); INFO(NCCL_NET, "Call to ibv_modify_qp failed with %d %s, %s, retrying %d/%d after %u msec of sleep", ret, strerror(ret), qpMsg, attempts, maxCnt, ...
For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/ Show more
ncclResult_tncclIbInit(ncclDebugLogger_t logFunction){staticintshownIbHcaEnv =0;if(wrap_ibv_symbols() != ncclSuccess) {returnncclInternalError; }if(ncclParamIbDisable())returnncclInternalError;if(ncclNIbDevs ==-1) {pthread_mutex_lock(&ncclIbLock);wrap_ibv_fork_init();if(ncclNIbDevs ==-...
TheNCCL_DEBUG_SUBSYSvariable allows the user to filter theNCCL_DEBUG=INFOoutput based on subsystems. A comma separated list of the subsystems to include in the NCCL debug log traces. Prefixing the subsystem name with ‘^’ will disable the logging for that subsystem. ...
INFO(NCCL_INIT|NCCL_NET,"NET/IB : Using%s ; OOB %s:%s", line, ncclIbIfName, socketToString(&ncclIbIfAddr.sa, addrline)); } pthread_mutex_unlock(&ncclIbLock); }returnncclSuccess; } AI代码助手复制代码 首先第三行通过wrap_ibv_symbols加载动态库libibverbs.so,然后获取动态库的各个函数。