edited. Install CUDA's latest toolkit 10.1 and equivalent CuDNN 7.5.1. Install Openmpi v3.1.2 with CUDA support. Build / install pytroch from source. Test any communication for a process group with mpi backend. PyTorch Version (e.g., 1.0): 1.1. OS (e.g., Linux): Ubuntu 16.04. How you installed PyTorch ( conda, pip, source): installed from ...这篇文章可能适合什么读者：对sovits的复现感兴趣，但本地设备显卡算力不足，打算通过autodl等平台租借显卡，在anaconda+linuxs平台上复现sovits4.0的读者。. （虽然后文也有涉及一点win系统上复现可能出现问题）. 以下内容视作读者具备基本的代码复现知识，不过 ...Don't have built-in NCCL in distributed package. distributed. zeming_hou (zeming hou) January 6, 2022, 1:10pm 1. 1369×352 18.5 KB. pritamdamania87 (Pritamdamania87) January 7, 2022, 11:00pm 2. @zeming_hou Did you compile PyTorch from source or did you install it via some of the pre-built binaries? In either case, could you share the commands ...[Solved] Pyinstaller Package and Run Error: RuntimeError: Unable to open/read ui device Just made a Python program to calculate body mass index BMI, and used Pyside6 to draw the user interface. When using auto-py-exe ( auto-py-to-exe is based on pyinstaller, compared to pyinstaller, it has more GUI interface, which makes it easier to use. for ...问题描述：. python在windows环境下dist.init_process_group (backend, rank, world_size)处报错‘RuntimeError: Distributed package doesn’t have NCCL built in’，具体信息如下：. File "D:\Software\Anaconda\Anaconda3\envs\segmenter\lib\site-packages\torch\distributed\distributed_c10d.py", line 531, in init_process_group timeout ...raise RuntimeError ("Distributed package doesn't have NCCL " "built in") RuntimeError: Distributed package doesn't have NCCL built in I am still new to pytorch and couldnt really find a way of setting the backend to ‘gloo’. I followed this link by setting the following but still no luck.Mar 23, 2023 · I wanted to use a model I found on github to run inferences. But the problem is in the main file they used distributed training to train on multiple gpus and I have only 1. world_size = torch.distributed.get_world_size () torch.cuda.set_device (args.local_rank) args.world_size = world_size rank = torch.distributed.get_rank () args.rank = rank. Apr 1, 2022 · [Solved] mmdetection benchmark.py Error: RuntimeError: Distributed package doesn‘t have NCCL built in; RuntimeError: Address already in use [How to Solve] Brew install XXX and display error: [email protected] [How to Solve] [Solved] RuntimeError: Numpy is not available (Associated Torch or Tensorflow) Hi, nngg11, I'm not sure if this codebase supports training / testing on windows since I have never tried this before. I only use linux-based systems, and I guess there will be some problems if you run training / testing on windows.Aug 17, 2021 · I am trying to train on one gpu windows machine: general settings name: train_RealESRNetx4plus_1000k_B12G4_fromESRGAN model_type: RealESRNetModel scale: 4 num_gpu: 1 #4 manual_seed: 0 but when I run: python -m torch.distributed.launch --... raise RuntimeError("Distributed package doesn't have NCCL " "built in") RuntimeError: Distributed package doesn't have NCCL built in Any help would be greatly appreciated, and I have no problem compensating anyone who can help me solve this issue. Saved searches Use saved searches to filter your results more quickly595 elif backend == Backend.NCCL: 596 if not is_nccl_available(): --> 597 raise RuntimeError("Distributed package doesn't have NCCL " 598 "built in") 599 pg = ProcessGroupNCCL( RuntimeError: Distributed package doesn't have NCCL built inDistributed package doesn't have NCCL built in. 问题描述： python在windows环境下dist.init_process_group(backend, rank, world_size)处报错‘RuntimeError: Distributed package doesn’t have NCCL built in’，具体信息如下：You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Method 2: Check NCCL Configuration. Check the configuration of your NCCL library and make sure that it is properly integrated with your distributed package. Review the environment variables and paths associated with the NCCL library and update them if necessary. You can monitor any additional configuration steps outlined in the documentation of ...RuntimeError: Distributed package doesn't have NCCL built in. distributed. 27: 9787: August 30, 2023 ... RuntimeError: setStorage: sizes [4096, 4096], strides [1 ...RuntimeError: Distributed package doesn't have NCCL built in. To Reproduce. I install pytorch from the source v1.0rc1, getting the config summary as follows:About moving to the new c10d backend for distributed, this can be a possibility but I haven't tried using it yet, so I'm not sure if it works in all the cases / doesn't deadlock. I'm busy this week with other things so I won't have time to test out the c10d backend, but let me ping @teng-li and @pietern so that they are aware that torch.nn ...Jul 22, 2023 · I am trying to finetune a ProtGPT-2 model using the following libraries and packages: I am running my scripts in a cluster with SLURM as workload manager and Lmod as environment modul systerm, I also have created a co… The torch.distributed package also provides a launch utility in torch.distributed.launch. This helper utility can be used to launch multiple processes per node for distributed training. torch.distributed.launch is a module that spawns up multiple distributed training processes on each of the training nodes. Apr 4, 2021 · Please add a note for "Fit More and Train Faster With ZeRO via DeepSpeed and FairScale" that deepspeed or parallel training is not easy/possible on Windows (10 for me) as nccl is not supported (directly) on windows yet.. PyTorchのCUDAプログラミングに絞って並列処理を見てみる。. なお、 CPU側の並列処理は別資料に記載済みである 。. ここでは、. C++の拡張仕様であるCUDAの基礎知識. カーネルレベルの並列処理. add関数の実装. im2col関数の実装. ストリームレベルの並列処理 ... System Info PyTorch version : 2.01 and nightly NVIDIA-SMI 535.54.03 Driver Version: 535.54.03 CUDA Version: 12.2 I installed cuda 11.8 with conda by pip install -r requirements.txt . Ubuntu 2204 wi...Aug 14, 2023 · raise RuntimeError("Distributed package doesn't have NCCL " "built in") RuntimeError: Distributed package doesn't have NCCL built in During handling of the above exception, another exception occurred: Jul 22, 2023 · I am trying to finetune a ProtGPT-2 model using the following libraries and packages: I am running my scripts in a cluster with SLURM as workload manager and Lmod as environment modul systerm, I also have created a co… Jul 22, 2023 · I am trying to finetune a ProtGPT-2 model using the following libraries and packages: I am running my scripts in a cluster with SLURM as workload manager and Lmod as environment modul systerm, I also have created a co… edited. Install CUDA's latest toolkit 10.1 and equivalent CuDNN 7.5.1. Install Openmpi v3.1.2 with CUDA support. Build / install pytroch from source. Test any communication for a process group with mpi backend. PyTorch Version (e.g., 1.0): 1.1. OS (e.g., Linux): Ubuntu 16.04. How you installed PyTorch ( conda, pip, source): installed from ...Mar 18, 2021 · failure to initialize NCCL. #216. Open. metaphorz opened this issue on Mar 18, 2021 · 3 comments. I am trying to finetune a ProtGPT-2 model using the following libraries and packages: I am running my scripts in a cluster with SLURM as workload manager and Lmod as environment modul systerm, I also have created a co…Host and manage packages Security. Find and fix vulnerabilities Codespaces. Instant dev environments ... RuntimeError: Distributed package doesn't have NCCL built inpytorchlighting报错：raise RuntimeError(“Distributed package doesn‘t have NCCL “RuntimeError: Distribu，代码先锋网，一个为软件开发程序员提供代码片段和技术文章聚合的网站。The torch.distributed package also provides a launch utility in torch.distributed.launch. This helper utility can be used to launch multiple processes per node for distributed training. torch.distributed.launch is a module that spawns up multiple distributed training processes on each of the training nodes.Mar 23, 2023 · Host and manage packages Security. Find and fix vulnerabilities ... can't run train in windows 11 as raise "Distributed package doesn't have NCCL built in" #431. Start multiple jobs on one computer. You need to specify a different port for each job (29500 by default) to avoid communication conflict. the solution is to specify the port while running the program, and give the port number arbitrarily before the PY file to be executed: python -m torch.distributed.launch --nproc_per_node=1 --master_port ...Sep 12, 2022 · Hi, thanks for taking time and mentioning these useful tips . I am very sorry for the late reply cause I was checking my computer and source code. Mar 25, 2021 · RuntimeError: Distributed package doesn’t have NCCL built in All these errors are raised when the init_process_group () function is called as following: torch.distributed.init_process_group (backend='nccl', init_method=args.dist_url, world_size=args.world_size, rank=args.rank) Here, note that args.world_size=1 and rank=args.rank=0. Pytorch报错解决——（亲测有效）RuntimeError: Distributed package doesn't have NCCL built in 原创. 2023-03-18 16:00:51 8点赞. 康康好老啊. 码龄2年.Hi, nngg11, I'm not sure if this codebase supports training / testing on windows since I have never tried this before. I only use linux-based systems, and I guess there will be some problems if you run training / testing on windows.Jun 5, 2021 · This entry was posted in How to Fix and tagged distributed package doesn't have nccl error, ProgrammerAH on 2021-06-05 by Robins. Post navigation ← Flutter Package error: keyboard_visibility:verifyReleaseResources How to Solve error: command ‘C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v11.0\bin vcc.exe‘ failed → System Info PyTorch version : 2.01 and nightly NVIDIA-SMI 535.54.03 Driver Version: 535.54.03 CUDA Version: 12.2 I installed cuda 11.8 with conda by pip install -r requirements.txt . Ubuntu 2204 wi...RuntimeError: Distributed package doesn't have MPI built in. MPI is only included if you build PyTorch from source on a host that has MPI installed. #8 Closed Hangyul-Son opened this issue Dec 30, 2022 · 2 commentsRuntimeError: Distributed package doesn't have NCCL built in. distributed. 23: 8639: August 22, 2023 ← previous page next page ...failure to initialize NCCL. #216. Open. metaphorz opened this issue on Mar 18, 2021 · 3 comments.Mar 2, 2023 · RuntimeError: Distributed package doesn't have NCCL built in #112 Open Distributed package doesn't have NCCL / The requested address is not valid in its context. Which type of machine are you using? No distributed training Do you want to run your training on CPU only (even if a GPU is available)? [yes/NO]: Do you wish to optimize your script with torch dynamo? [yes/NO]: Do you want to use DeepSpeed? [yes/NO]: What GPU(s) (by id) should be used for training on this machine as a comma-seperated list?Mar 23, 2023 · I wanted to use a model I found on github to run inferences. But the problem is in the main file they used distributed training to train on multiple gpus and I have only 1. world_size = torch.distributed.get_world_size () torch.cuda.set_device (args.local_rank) args.world_size = world_size rank = torch.distributed.get_rank () args.rank = rank. 这篇文章可能适合什么读者：对sovits的复现感兴趣，但本地设备显卡算力不足，打算通过autodl等平台租借显卡，在anaconda+linuxs平台上复现sovits4.0的读者。. （虽然后文也有涉及一点win系统上复现可能出现问题）. 以下内容视作读者具备基本的代码复现知识，不过 ...Mar 23, 2023 · Host and manage packages Security. Find and fix vulnerabilities ... can't run train in windows 11 as raise "Distributed package doesn't have NCCL built in" #431. RuntimeError: Distributed package doesn't have NCCL built in. distributed. 27: 9787: August 30, 2023 ... RuntimeError: setStorage: sizes [4096, 4096], strides [1 ... Aug 19, 2022 · Hi, nngg11, I'm not sure if this codebase supports training / testing on windows since I have never tried this before. I only use linux-based systems, and I guess there will be some problems if you run training / testing on windows. python.distributedは、Point-to-Point通信や集団通信といった分散処理のAPIを提供しています。これにより、細かな処理をカスタマイズすることが可能です。 通信のbackendとしては、pytorch 1.13時点では、MPI、GLOO、NCCLが選択できます。各backendで利用できる通信関数の一覧は公式ドキュメントに記載されて ...pytorchlighting报错：raise RuntimeError(“Distributed package doesn‘t have NCCL “RuntimeError: Distribu，代码先锋网，一个为软件开发程序员提供代码片段和技术文章聚合的网站。 May 11, 2022 · Distributed package doesn't have NCCL built in. 问题描述： python在windows环境下dist.init_process_group(backend, rank, world_size)处报错‘RuntimeError: Distributed package doesn’t have NCCL built in’，具体信息如下： raise RuntimeError("Distributed package doesn't have NCCL " "built in") RuntimeError: Distributed package doesn't have NCCL built in Any help would be greatly appreciated, and I have no problem compensating anyone who can help me solve this issue.错误: RuntimeError: Distributed package doesn't have NCCL built in|PyTorch踩坑. bug / PyTorch 2021-09-28 赵亚博([email protected]). Read more >File "C:\Users\janice\anaconda3\envs\covnet\lib\site-packages\torch\distributed\distributed_c10d.py", line 597, in _new_process_group_helper raise RuntimeError("Distributed package doesn't have NCCL "RuntimeError: Distributed package doesn't have NCCL built in Killing subprocess 14712 Traceback (most recent call last):Hi, i try to run train.py in Windows. Help me please solve the problem. System parameters 12th Gen Intel(R) Core(TM) i5-12600KF 3.70 GHz 32 GB Cuda 11.8 Windows 11 Pro Python 3.10.11 Command: torch... Repository URL to install this package: Version: 1.8.0 / distributed / distributed_c10d.py distributed / distributed_c10d.py Oct 31, 2020 · 正文 我和宋清朗相恋三年，在试婚纱的时候发现自己被绿了。 大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。 Aug 12, 2021 · As the accelerate command was not working from poershell, I used the torch.distributed.launch to run the script as follows: python -m torch.distributed.launch --nproc_per_node 1 --use_env ./nlp_example.py Since I was using Windows OS, it gave the following error: RuntimeError: Distributed package doesn't have NCCL built in Jan 8, 2011 · 372 raise RuntimeError("Distributed package doesn't have NCCL " 373 "built in" ) 374 _default_pg = ProcessGroupNCCL(store, rank, world_size) Aug 19, 2022 · Hi, nngg11, I'm not sure if this codebase supports training / testing on windows since I have never tried this before. I only use linux-based systems, and I guess there will be some problems if you run training / testing on windows. PyTorchのCUDAプログラミングに絞って並列処理を見てみる。. なお、 CPU側の並列処理は別資料に記載済みである 。. ここでは、. C++の拡張仕様であるCUDAの基礎知識. カーネルレベルの並列処理. add関数の実装. im2col関数の実装. ストリームレベルの並列処理 ... Cause: use mmdetection’s tools/benchmark An error occurs when py calculates FPS the error contents are as follows: Traceback (most recent call last): File "tools ...Windows RuntimeError: Distributed package doesn‘t have NCCL built in问题; pytorchlighting报错：raise RuntimeError(“Distributed package doesn‘t have NCCL “RuntimeError: Distribu; Mybatis报错“Field ‘id‘ doesn‘t have a default value” 由sklearn doesn't have attribute 'datasets'引发的思考 Aug 18, 2023 · RuntimeError: Distributed package doesn't have NCCL built in / The client socket has failed to connect to [DESKTOP-OSLP67M]:29500 (system error: 10049 - unknown error). #1402 Open wildcatquebec opened this issue Aug 18, 2023 · 0 comments RuntimeError: Distributed package doesn't have NCCL built in Traceback (most recent call last): File "tools/train.py", line 250, in main()May 9, 2022 · [Solved] Pyinstaller Package and Run Error: RuntimeError: Unable to open/read ui device Just made a Python program to calculate body mass index BMI, and used Pyside6 to draw the user interface. When using auto-py-exe ( auto-py-to-exe is based on pyinstaller, compared to pyinstaller, it has more GUI interface, which makes it easier to use. for ... How to train a custom model under Windows 10 with miniconda? Inference works great but when I try to start a custom training only errors come up. Latest RTX/Quadro driver and Nvida Cuda Toolkit 11.3 + cudnn 11.3 + ms vs buildtools are in...Mar 2, 2023 · RuntimeError: Distributed package doesn't have NCCL built in #112 Open Distributed package doesn't have NCCL / The requested address is not valid in its context. Distributed package doesn’t have NCCL built in Hi @nguyenngocdat1995 , sorry for the delay - Jetson doesn’t have NCCL, as this library is intended for multi-node servers. You may need to disable the multiprocessing in the detectron’s training.Distributed package doesn’t have NCCL built in Hi @nguyenngocdat1995 , sorry for the delay - Jetson doesn’t have NCCL, as this library is intended for multi-node servers. You may need to disable the multiprocessing in the detectron’s training.Pytorch报错解决——（亲测有效）RuntimeError: Distributed package doesn't have NCCL built in 原创. 2023-03-18 16:00:51 8点赞. 康康好老啊. 码龄2年.{"payload":{"allShortcutsEnabled":false,"fileTree":{"torch/distributed":{"items":[{"name":"_composable","path":"torch/distributed/_composable","contentType ...When trying to run example_completion.py file in my windows laptop, I am getting below error: I am using pytorch 2.0 version with CUDA 11.7 . On typing the command import torch.distributed as dist ...Jan 6, 2022 · Cause: use mmdetection’s tools/benchmark An error occurs when py calculates FPS the error contents are as follows: Traceback (most recent call last): File "tools ... PyTorchのCUDAプログラミングに絞って並列処理を見てみる。. なお、 CPU側の並列処理は別資料に記載済みである 。. ここでは、. C++の拡張仕様であるCUDAの基礎知識. カーネルレベルの並列処理. add関数の実装. im2col関数の実装. ストリームレベルの並列処理 ...这篇文章可能适合什么读者：对sovits的复现感兴趣，但本地设备显卡算力不足，打算通过autodl等平台租借显卡，在anaconda+linuxs平台上复现sovits4.0的读者。. （虽然后文也有涉及一点win系统上复现可能出现问题）. 以下内容视作读者具备基本的代码复现知识，不过 ...这篇文章可能适合什么读者：对sovits的复现感兴趣，但本地设备显卡算力不足，打算通过autodl等平台租借显卡，在anaconda+linuxs平台上复现sovits4.0的读者。. （虽然后文也有涉及一点win系统上复现可能出现问题）. 以下内容视作读者具备基本的代码复现知识，不过 ...Sep 15, 2022 · raise RuntimeError ("Distributed package doesn't have NCCL " "built in") RuntimeError: Distributed package doesn't have NCCL built in I am still new to pytorch and couldnt really find a way of setting the backend to ‘gloo’. Any way to set backend= 'gloo' to run two gpus on windows. pytorch distributed pytorch-lightning Share Improve this question The distributed package comes with a distributed key-value store, which can be used to share information between processes in the group as well as to initialize the distributed package in torch.distributed.init_process_group () (by explicitly creating the store as an alternative to specifying init_method .)Aug 12, 2021 · As the accelerate command was not working from poershell, I used the torch.distributed.launch to run the script as follows: python -m torch.distributed.launch --nproc_per_node 1 --use_env ./nlp_example.py Since I was using Windows OS, it gave the following error: RuntimeError: Distributed package doesn't have NCCL built in Which type of machine are you using? No distributed training Do you want to run your training on CPU only (even if a GPU is available)? [yes/NO]: Do you wish to optimize your script with torch dynamo? [yes/NO]: Do you want to use DeepSpeed? [yes/NO]: What GPU(s) (by id) should be used for training on this machine as a comma-seperated list?Jul 6, 2022 · python.distributedは、Point-to-Point通信や集団通信といった分散処理のAPIを提供しています。これにより、細かな処理をカスタマイズすることが可能です。 通信のbackendとしては、pytorch 1.13時点では、MPI、GLOO、NCCLが選択できます。各backendで利用できる通信関数の一覧は公式ドキュメントに記載されて ... Start multiple jobs on one computer. You need to specify a different port for each job (29500 by default) to avoid communication conflict. the solution is to specify the port while running the program, and give the port number arbitrarily before the PY file to be executed: python -m torch.distributed.launch --nproc_per_node=1 --master_port ...RuntimeError: stack expects each tensor to be equal size [How to Solve] [Solved] error: (-215:Assertion failed) size.width＞0 && size.height＞0 in function ‘imshow‘ [Solved] mmdetection benchmark.py Error: RuntimeError: Distributed package doesn‘t have NCCL built in; Python: How to get the size of the picture (byte/kb/mb)System Info PyTorch version : 2.01 and nightly NVIDIA-SMI 535.54.03 Driver Version: 535.54.03 CUDA Version: 12.2 I installed cuda 11.8 with conda by pip install -r requirements.txt . Ubuntu 2204 wi...To rebuild or reinstall the package, you can follow the directions in the documentation of the relevant framework. Verify GPU drivers: Ensure your computer has the necessary GPU drivers installed. For NCCL to work appropriately, suitable GPU drivers are needed.
正文 我和宋清朗相恋三年，在试婚纱的时候发现自己被绿了。 大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。. Real forex power ea
Mar 23, 2021 · 595 elif backend == Backend.NCCL: 596 if not is_nccl_available(): --> 597 raise RuntimeError("Distributed package doesn't have NCCL " 598 "built in") 599 pg = ProcessGroupNCCL( RuntimeError: Distributed package doesn't have NCCL built in Nov 6, 2018 · About moving to the new c10d backend for distributed, this can be a possibility but I haven't tried using it yet, so I'm not sure if it works in all the cases / doesn't deadlock. I'm busy this week with other things so I won't have time to test out the c10d backend, but let me ping @teng-li and @pietern so that they are aware that torch.nn ... RuntimeError: Distributed package doesn't have NCCL built in. distributed. 23: 8639: August 22, 2023 ← previous page next page ...RuntimeError: Distributed package doesn't have NCCL built in. distributed. 27: 9787: August 30, 2023 ... RuntimeError: setStorage: sizes [4096, 4096], strides [1 ... raise RuntimeError(“Distributed package doesn‘t have NCCL “ “built in“) RuntimeError: Distributed pa_lanmy_dl的博客-程序员秘密. 技术标签： 训练过程 安装配置 python ubuntu pytorch 服务器 Aug 9, 2021 · How to train a custom model under Windows 10 with miniconda? Inference works great but when I try to start a custom training only errors come up. Latest RTX/Quadro driver and Nvida Cuda Toolkit 11.3 + cudnn 11.3 + ms vs buildtools are in... Aug 12, 2021 · As the accelerate command was not working from poershell, I used the torch.distributed.launch to run the script as follows: python -m torch.distributed.launch --nproc_per_node 1 --use_env ./nlp_example.py Since I was using Windows OS, it gave the following error: RuntimeError: Distributed package doesn't have NCCL built in Per user-direction, the job has been aborted. ------------------------------------------------------- -------------------------------------------------------------------------- mpirun detected that one or more processes exited with non-zero status, thus causing the job to be terminated.How to train a custom model under Windows 10 with miniconda? Inference works great but when I try to start a custom training only errors come up. Latest RTX/Quadro driver and Nvida Cuda Toolkit 11.3 + cudnn 11.3 + ms vs buildtools are in...raise RuntimeError("Distributed package doesn’t have NCCL "RuntimeError: Distributed package doesn’t have NCCL built in. All these errors are raised when the init_process_group() function is called as following: torch.distributed.init_process_group(backend='nccl', init_method=args.dist_url, world_size=args.world_size, rank=args.rank)Aug 19, 2022 · Hi, nngg11, I'm not sure if this codebase supports training / testing on windows since I have never tried this before. I only use linux-based systems, and I guess there will be some problems if you run training / testing on windows. RuntimeError: stack expects each tensor to be equal size [How to Solve] [Solved] error: (-215:Assertion failed) size.width＞0 && size.height＞0 in function ‘imshow‘ [Solved] mmdetection benchmark.py Error: RuntimeError: Distributed package doesn‘t have NCCL built in; Python: How to get the size of the picture (byte/kb/mb)Distributed package doesn't have NCCL built in 问题描述： python在windows环境下dist.init_process_group(backend, rank, world_size)处报错‘RuntimeError: Distributed package doesn’t have NCCL built in’，具体信息如下： File "D:\Software\Anaconda\Anaconda3\envs\segmenter\lib\.RuntimeError: Distributed package doesn't have NCCL built in / The client socket has failed to connect to [DESKTOP-OSLP67M]:29500 (system error: 10049 - unknown error). #1402 Open wildcatquebec opened this issue Aug 18, 2023 · 0 commentsMay 7, 2019 · edited. Install CUDA's latest toolkit 10.1 and equivalent CuDNN 7.5.1. Install Openmpi v3.1.2 with CUDA support. Build / install pytroch from source. Test any communication for a process group with mpi backend. PyTorch Version (e.g., 1.0): 1.1. OS (e.g., Linux): Ubuntu 16.04. How you installed PyTorch ( conda, pip, source): installed from ... .