(need help)failed to train model with mmdetection

[WepLeo]

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1. I have searched related issues but cannot get the expected help.
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3. The bug has not been fixed in the latest version.

Describe the bug if i use V100-16G machine, everything is ok, but A100 machine will report errors after running few steps.(sorry for bad english...)

Reproduction

1. What command or script did you run?

python tools/train.py configs/coco/coco_config.py

2. Did you make any modifications on the code or config? Did you understand what you have modified? here is the coco_config.py

   
   _base_ = '../fcos/fcos_center-normbbox-centeronreg-giou_r50_caffe_fpn_gn-head_1x_coco.py'
   model = dict(
   backbone=dict(
       init_cfg=dict(
           type='Pretrained',
           checkpoint='./checkpoints/resnet50_caffe-788b5fa3.pth')))

Modify dataset related settings

dataset_type = 'CocoDataset' data_root = '/workdir/wepleo/data/open_datasets/coco/' data = dict( train=dict( type=dataset_type, ann_file=data_root + 'Annotations/instances_train2017.json', img_prefix=data_root + 'images/train'), val=dict( type=dataset_type, ann_file=data_root + 'Annotations/instances_val2017.json', img_prefix=data_root + 'images/val'), test=dict( type=dataset_type, ann_file=data_root + 'Annotations/instances_val2017.json', img_prefix=data_root + 'images/val'))

optimizer_config = dict(delete=True, grad_clip=dict(max_norm=35, norm_type=2))

We can use the pre-trained model to obtain higher performance

load_from = 'checkpoints/fcos_center-normbbox-centeronreg-giou_r50_caffe_fpn_gn-head_1x_coco-0a0d75a8.pth'

3. What dataset did you use? 
coco

**Environment**
sys.platform: linux
Python: 3.7.9 (default, Aug 31 2020, 12:42:55) [GCC 7.3.0]
CUDA available: True
GPU 0,1: A100-SXM4-40GB
CUDA_HOME: /usr/local/cuda
NVCC: Build cuda_11.0_bu.TC445_37.28845127_0
GCC: gcc (GCC) 5.4.0
PyTorch: 1.7.0
PyTorch compiling details: PyTorch built with:
  - GCC 7.3
  - C++ Version: 201402
  - Intel(R) oneAPI Math Kernel Library Version 2021.3-Product Build 20210617 for Intel(R) 64 architecture applications
  - Intel(R) MKL-DNN v1.6.0 (Git Hash 5ef631a030a6f73131c77892041042805a06064f)
  - OpenMP 201511 (a.k.a. OpenMP 4.5)
  - NNPACK is enabled
  - CPU capability usage: AVX2
  - CUDA Runtime 11.0
  - NVCC architecture flags: -gencode;arch=compute_37,code=sm_37;-gencode;arch=compute_50,code=sm_50;-gencode;arch=compute_60,code=sm_60;-gencode;arch=compute_61,code=sm_61;-gencode;arch=compute_70,code=sm_70;-gencode;arch=compute_75,code=sm_75;-gencode;arch=compute_80,code=sm_80;-gencode;arch=compute_37,code=compute_37
  - CuDNN 8.0.3
  - Magma 2.5.2
  - Build settings: BLAS=MKL, BUILD_TYPE=Release, CXX_FLAGS= -Wno-deprecated -fvisibility-inlines-hidden -DUSE_PTHREADPOOL -fopenmp -DNDEBUG -DUSE_FBGEMM -DUSE_QNNPACK -DUSE_PYTORCH_QNNPACK -DUSE_XNNPACK -DUSE_VULKAN_WRAPPER -O2 -fPIC -Wno-narrowing -Wall -Wextra -Werror=return-type -Wno-missing-field-initializers -Wno-type-limits -Wno-array-bounds -Wno-unknown-pragmas -Wno-sign-compare -Wno-unused-parameter -Wno-unused-variable -Wno-unused-function -Wno-unused-result -Wno-unused-local-typedefs -Wno-strict-overflow -Wno-strict-aliasing -Wno-error=deprecated-declarations -Wno-stringop-overflow -Wno-psabi -Wno-error=pedantic -Wno-error=redundant-decls -Wno-error=old-style-cast -fdiagnostics-color=always -faligned-new -Wno-unused-but-set-variable -Wno-maybe-uninitialized -fno-math-errno -fno-trapping-math -Werror=format -Wno-stringop-overflow, PERF_WITH_AVX=1, PERF_WITH_AVX2=1, PERF_WITH_AVX512=1, USE_CUDA=ON, USE_EXCEPTION_PTR=1, USE_GFLAGS=OFF, USE_GLOG=OFF, USE_MKL=ON, USE_MKLDNN=ON, USE_MPI=OFF, USE_NCCL=ON, USE_NNPACK=ON, USE_OPENMP=ON,

TorchVision: 0.8.0
OpenCV: 4.5.4-dev
MMCV: 1.3.15
MMCV Compiler: GCC 5.4
MMCV CUDA Compiler: 11.0
MMDetection: 2.17.0+a5054bd

install pytorch method: 
```none
conda install pytorch==1.7.0 torchvision==0.8.0 torchaudio==0.7.0 cudatoolkit=11.0

Error traceback If applicable, paste the error trackback here.

2021-10-29 11:32:21,262 - mmdet - INFO - Epoch [1][70/58633]    lr: 4.253e-03, eta: 2 days, 14:19:30, time: 0.273, data_time: 0.045, memory: 3046, loss_cls: 0.8306, loss_bbox: 0.5608, loss_centerness: 0.6810, loss: 2.0725
Traceback (most recent call last):
  File "tools/train.py", line 189, in <module>
    main()
  File "tools/train.py", line 185, in main
    meta=meta)
  File "/home/wepleo/code/mmdetection/mmdetection-2.17.0/mmdet/apis/train.py", line 174, in train_detector
    runner.run(data_loaders, cfg.workflow)
  File "/home/wepleo/code/mmdetection/mmcv-1.3.15/mmcv/runner/epoch_based_runner.py", line 127, in run
    epoch_runner(data_loaders[i], **kwargs)
  File "/home/wepleo/code/mmdetection/mmcv-1.3.15/mmcv/runner/epoch_based_runner.py", line 51, in train
    self.call_hook('after_train_iter')
  File "/home/wepleo/code/mmdetection/mmcv-1.3.15/mmcv/runner/base_runner.py", line 307, in call_hook
    getattr(hook, fn_name)(self)
  File "/home/wepleo/code/mmdetection/mmcv-1.3.15/mmcv/runner/hooks/optimizer.py", line 35, in after_train_iter
    runner.outputs['loss'].backward()
  File "/workdir/anaconda3/envs/mmlab/lib/python3.7/site-packages/torch/tensor.py", line 221, in backward
    torch.autograd.backward(self, gradient, retain_graph, create_graph)
  File "/workdir/anaconda3/envs/mmlab/lib/python3.7/site-packages/torch/autograd/__init__.py", line 132, in backward
    allow_unreachable=True)  # allow_unreachable flag
RuntimeError: CUDA error: an illegal memory access was encountered

[RangiLyu]

Please follow the issue template to provide more details.

[riyaj8888]

I followed this tutorial "https://github.com/open-mmlab/mmdetection/blob/master/demo/MMDet_Tutorial.ipynb"

I have dataset in VOC format , with one class but after running following code from notebook ,i am getting 20 classes instead one class , i made changes in voc512.py ,class_names.py but still getting 20 classes.

`from mmdet.datasets import build_dataset from mmdet.models import build_detector from mmdet.apis import train_detector

Build dataset

datasets = [build_dataset(cfg.data.train)]

Build the detector

model = build_detector( cfg.model, train_cfg=cfg.get('train_cfg'), test_cfg=cfg.get('test_cfg'))

Add an attribute for visualization convenience

datasets[0].CLASSES`

from mmcv import Config cfg = Config.fromfile('/content/mmdetection/configs/pascal_voc/faster_rcnn_r50_fpn_1x_voc0712.py') print(f'Config:\n{cfg.pretty_text}')

Config: model = dict( type='FasterRCNN', backbone=dict( type='ResNet', depth=50, num_stages=4, out_indices=(0, 1, 2, 3), frozen_stages=1, norm_cfg=dict(type='BN', requires_grad=True), norm_eval=True, style='pytorch', init_cfg=dict(type='Pretrained', checkpoint='torchvision://resnet50')), neck=dict( type='FPN', in_channels=[256, 512, 1024, 2048], out_channels=256, num_outs=5), rpn_head=dict( type='RPNHead', in_channels=256, feat_channels=256, anchor_generator=dict( type='AnchorGenerator', scales=[8], ratios=[0.5, 1.0, 2.0], strides=[4, 8, 16, 32, 64]), bbox_coder=dict( type='DeltaXYWHBBoxCoder', target_means=[0.0, 0.0, 0.0, 0.0], target_stds=[1.0, 1.0, 1.0, 1.0]), loss_cls=dict( type='CrossEntropyLoss', use_sigmoid=True, loss_weight=1.0), loss_bbox=dict(type='L1Loss', loss_weight=1.0)), roi_head=dict( type='StandardRoIHead', bbox_roi_extractor=dict( type='SingleRoIExtractor', roi_layer=dict(type='RoIAlign', output_size=7, sampling_ratio=0), out_channels=256, featmap_strides=[4, 8, 16, 32]), bbox_head=dict( type='Shared2FCBBoxHead', in_channels=256, fc_out_channels=1024, roi_feat_size=7, num_classes=1, bbox_coder=dict( type='DeltaXYWHBBoxCoder', target_means=[0.0, 0.0, 0.0, 0.0], target_stds=[0.1, 0.1, 0.2, 0.2]), reg_class_agnostic=False, loss_cls=dict( type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0), loss_bbox=dict(type='L1Loss', loss_weight=1.0))), train_cfg=dict( rpn=dict( assigner=dict( type='MaxIoUAssigner', pos_iou_thr=0.7, neg_iou_thr=0.3, min_pos_iou=0.3, match_low_quality=True, ignore_iof_thr=-1), sampler=dict( type='RandomSampler', num=256, pos_fraction=0.5, neg_pos_ub=-1, add_gt_as_proposals=False), allowed_border=-1, pos_weight=-1, debug=False), rpn_proposal=dict( nms_pre=2000, max_per_img=1000, nms=dict(type='nms', iou_threshold=0.7), min_bbox_size=0), rcnn=dict( assigner=dict( type='MaxIoUAssigner', pos_iou_thr=0.5, neg_iou_thr=0.5, min_pos_iou=0.5, match_low_quality=False, ignore_iof_thr=-1), sampler=dict( type='RandomSampler', num=512, pos_fraction=0.25, neg_pos_ub=-1, add_gt_as_proposals=True), pos_weight=-1, debug=False)), test_cfg=dict( rpn=dict( nms_pre=1000, max_per_img=1000, nms=dict(type='nms', iou_threshold=0.7), min_bbox_size=0), rcnn=dict( score_thr=0.05, nms=dict(type='nms', iou_threshold=0.5), max_per_img=100))) dataset_type = 'VOCDataset' data_root = '/content/mmdetection/' img_norm_cfg = dict( mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True) train_pipeline = [ dict(type='LoadImageFromFile'), dict(type='LoadAnnotations', with_bbox=True), dict(type='Resize', img_scale=(1000, 600), keep_ratio=True), dict(type='RandomFlip', flip_ratio=0.5), dict( type='Normalize', mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True), dict(type='Pad', size_divisor=32), dict(type='DefaultFormatBundle'), dict(type='Collect', keys=['img', 'gt_bboxes', 'gt_labels']) ] test_pipeline = [ dict(type='LoadImageFromFile'), dict( type='MultiScaleFlipAug', img_scale=(1000, 600), flip=False, transforms=[ dict(type='Resize', keep_ratio=True), dict(type='RandomFlip'), dict( type='Normalize', mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True), dict(type='Pad', size_divisor=32), dict(type='ImageToTensor', keys=['img']), dict(type='Collect', keys=['img']) ]) ] data = dict( samples_per_gpu=2, workers_per_gpu=2, train=dict( type='RepeatDataset', times=3, dataset=dict( type='VOCDataset', ann_file=[ '/content/mmdetection/VOC2007/ImageSets/Main/trainval.txt' ], img_prefix=['/content/mmdetection/VOC2007/'], pipeline=[ dict(type='LoadImageFromFile'), dict(type='LoadAnnotations', with_bbox=True), dict(type='Resize', img_scale=(1000, 600), keep_ratio=True), dict(type='RandomFlip', flip_ratio=0.5), dict( type='Normalize', mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True), dict(type='Pad', size_divisor=32), dict(type='DefaultFormatBundle'), dict(type='Collect', keys=['img', 'gt_bboxes', 'gt_labels']) ])), val=dict( type='VOCDataset', ann_file='/content/mmdetection/VOC2007/ImageSets/Main/test.txt', img_prefix='/content/mmdetection/VOC2007/', pipeline=[ dict(type='LoadImageFromFile'), dict( type='MultiScaleFlipAug', img_scale=(1000, 600), flip=False, transforms=[ dict(type='Resize', keep_ratio=True), dict(type='RandomFlip'), dict( type='Normalize', mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True), dict(type='Pad', size_divisor=32), dict(type='ImageToTensor', keys=['img']), dict(type='Collect', keys=['img']) ]) ]), test=dict( type='VOCDataset', ann_file='/content/mmdetection/VOC2007/ImageSets/Main/test.txt', img_prefix='/content/mmdetection/VOC2007/', pipeline=[ dict(type='LoadImageFromFile'), dict( type='MultiScaleFlipAug', img_scale=(1000, 600), flip=False, transforms=[ dict(type='Resize', keep_ratio=True), dict(type='RandomFlip'), dict( type='Normalize', mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True), dict(type='Pad', size_divisor=32), dict(type='ImageToTensor', keys=['img']), dict(type='Collect', keys=['img']) ]) ])) evaluation = dict(interval=1, metric='mAP') checkpoint_config = dict(interval=1) log_config = dict(interval=50, hooks=[dict(type='TextLoggerHook')]) dist_params = dict(backend='nccl') log_level = 'INFO' load_from = None resume_from = None workflow = [('train', 1)] optimizer = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0001) optimizer_config = dict(grad_clip=None) lr_config = dict(policy='step', step=[3]) runner = dict(type='EpochBasedRunner', max_epochs=4)

[WepLeo]

Please follow the issue template to provide more details.

i have already updated the issue. tks~

[RangiLyu]

Describe the bug if i use V100-16G machine, everything is ok, but A100 machine will report errors after running few steps.(sorry for bad English...)

There are many potential reasons, maybe because of the cuda and Nvidia driver versions. Some versions may have some compatibility issues on A100. Try to upgrade your GPU diver and cuda. Or maybe the GPU has broken.

[WepLeo]

Describe the bug if i use V100-16G machine, everything is ok, but A100 machine will report errors after running few steps.(sorry for bad English...)

There are many potential reasons, maybe because of the cuda and Nvidia driver versions. Some versions may have some compatibility issues on A100. Try to upgrade your GPU diver and cuda. Or maybe the GPU has broken.

GPU driver version: 460.27.04. The machine and the system worked well when training yolov5. And I tried to compile mmcv in local, but a compiler version error has occurred. Is there a version limit of mmcv in A100?

[RangiLyu]

Describe the bug if i use V100-16G machine, everything is ok, but A100 machine will report errors after running few steps.(sorry for bad English...)

There are many potential reasons, maybe because of the cuda and Nvidia driver versions. Some versions may have some compatibility issues on A100. Try to upgrade your GPU diver and cuda. Or maybe the GPU has broken.

GPU driver version: 460.27.04. The machine and the system worked well when training yolov5. And I tried to compile mmcv in local, but a compiler version error has occurred. Is there a version limit of mmcv in A100?

So, the same code works fine on V100 but failed on A100. However, yolov5 is runnable in the same environment. High probability is because of the cuda version. Try to use cuda11.1 or a higher version. But I can not be sure because I do not have an A100 to reproduce this error. Just have a try.

[WepLeo]

pytorch 1.10 cudatoolkit=11.3

MMCV: 1.3.15 MMCV Compiler: GCC 5.4 MMCV CUDA Compiler: 11.0 MMDetection: 2.17.0+a5054bd

build and install MMCV and MMDetection from source follow the guide, everything is ok now. thank you ~