OMP_NUM_THREADS=64 init_process_group初始化的代码是这么写的: 情况一: init_str = f'tcp://{os.environ["MASTER_ADDR"]}:{os.environ["MASTER_PORT"]}' distributed.init_process_group(backend="nccl", init_method=init_str,rank=0,
如果是多机多卡这边会有不同的写法,建议查询官方文档。 torchrun前面还有一个OMP_NUM_THREAD的参数,如果不写,程序也可以执行,但是会报一个warning: Setting OMP_NUM_THREADS environment variable for each process to be 1 in default, to avoid your system being overloaded, please further tune the variable f...
if 'OMP_NUM_THREADS' not in os.environ and args.nproc_per_node > 1: current_env["OMP_NUM_THREADS"] = str(1) print("***\n" "Setting OMP_NUM_THREADS environment variable for each process " "to be {} in default, to avoid your system...
torch.nn.parallel.DistributedDataParallel ==> 简称DDP 1. 2. 一开始采用dp试图加速,结果因为dgl的实现(每个batch的点都会打包进一个batch,从而不可分割),而torch.nn.DataParallel的实现是把一个batch切分成更小,再加上他的加速性能也不如ddp,所以我开始尝试魔改成ddp。 另外,作者在实现Sampler的时候是继承了torc...
omp_set_num_threads(2) #pragma omp parallel for default(none) shared(x) private (i) for(i=0; i<10; i++){ x[i]=i; } 在环境变量中设置environment variables在命令窗口中配置 : export OMP_NUM_THREADS = 3module load intel //call intel moduleicc -0 -qopenmp myOMP.c -o myOMP....
$ torchrun --nproc_per_node=8 elastic_ddp.pyWARNING:torch.distributed.run:***Setting OMP_NUM_THREADS environment variableforeach process to be 1indefault, to avoid your system being overloaded, please further tune the variableforoptimal performanceinyour application as needed.***Start running bas...
if 'OMP_NUM_THREADS' not in os.environ and args.nproc_per_node > 1: current_env["OMP_NUM_THREADS"] = str(1) print("*** " "Setting OMP_NUM_THREADS environment variable for each process " "to be {} in default, to avoid your system being overloaded...
}if"OMP_NUM_THREADS"inos.environ: worker_env["OMP_NUM_THREADS"] = os.environ["OMP_NUM_THREADS"] envs[local_rank] = worker_env worker_args =list(spec.args) worker_args = macros.substitute(worker_args,str(local_rank)) args[local_rank] =tuple(worker_args)# scaling events do not count...
no other parts were essential. And I could either have the trainer strategy set to "ddp" or "fsdp" or nothing at all; made no difference. ALTHOUGH, one extra other thing that makes it go even faster: For some reasonOMP_NUM_THREADSis not being set and so you see a warning message th...
*** Setting OMP_NUM_THREADS environment variable for each process to be 1 in default, to avoid your system being overloaded, please further tune the variable for optimal performance in your application as needed. *** [238627] Initializingprocess group with: {'MASTER_ADDR': '127.0.0.1', ...