RuntimeError: The shape of the mask [32, 8732] at index 0 does not match the shape of the indexed tensor [279424, 1] at index 0 #173
Comments
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I have the same error.Using Pytorch0.4+python3.5. |
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python3.5 and pytorch 0.3.0 no problem |
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I have the same error，if I switch the lines 96,97 |
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@xscjun change line: |
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Anyone has solved this problem? help me tks. |
The “pos” -> torch.Size([32, 8732]) Then it worked. |
i have the same error, and how did you solve it finally? |
i have the same error, so how could you figure it out finally? |
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What file should be updated? |
change the data type of N to FloatTensor. |
You may try to update your file |
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@usherbob python3.6+pytorch0.4.1, I added "loss_c = loss_c.view(pos.size()[0], pos.size()[1]) #add line", but I have another issue. RuntimeError: copy_if failed to synchronize: device-side assert triggered |
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Finally, I succeeded. |
I changed like this, but there was a RuntimeError still: |
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by changing the order of line 97 and 98 it throws a new error for me any suggestions? PS: I tried as well converting the loss to double as mentioned above and still the same error! ### solved |
很棒，但是有个小bug，是line 114,不是line 144 |
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If your Python torch version is '0.4.1' ,you can change follow |
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I solve the problem if your python torch version is 1.0.1. The solution as follow 1-3 steps: |
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loss is increasing as shown below timer: 2.2050 sec. help me to solve the issue. |
thanks,that is usefully for me,but ,step3 is:line 183,184,188,191, 5 item ,loss_x.data[0] >> loss_x.data or loss.data[0] >> loss.data |
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would be loss_x.data[0] >> loss_x.item() better? |
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@TianSong1991 Thanks a lot.Pytorch 1.0+Python 3.5 success! |
much obligated！ |
but loss is nan |
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I have the same problem. Why loss is nan? |
Hi , why don`t the loss_l divide by N? |
I've encountered the same one here, have you solve this problem? |
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learning rate is too big
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郭腾伟
邮箱：[email protected]
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签名由 网易邮箱大师 定制
On 09/22/2019 11:52, HaoWu1993 wrote:
Pytorch version:
>> import torch
>> print(torch.__version__)
1.1.0
Python version:
Python 3.6.7 (default, Oct 22 2018, 11:32:17)
[GCC 8.2.0] on linux
multibox_loss.py:
Switch the two lines 97,98:
loss_c = loss_c.view(num, -1)
loss_c[pos] = 0 # filter out pos boxes for now
Change line114
N = num_pos.data.sum() -> N = num_pos.data.sum().double()
and change the following two lines to:
loss_l = loss_l.double()
loss_c = loss_c.double()
train.py
loss_l.data[0] >> loss_l.data
loss_c.data[0] >> loss_c.data
loss.data[0] >> loss.data
And here is my output:
timer: 11.9583 sec.
iter 0 || Loss: 11728.9388 || timer: 0.2955 sec.
iter 10 || Loss: nan || timer: 0.2843 sec.
iter 20 || Loss: nan || timer: 0.2890 sec.
iter 30 || Loss: nan || timer: 0.2934 sec.
iter 40 || Loss: nan || timer: 0.2865 sec.
iter 50 || Loss: nan || timer: 0.2855 sec.
iter 60 || Loss: nan || timer: 0.2889 sec.
iter 70 || Loss: nan || timer: 0.2857 sec.
iter 80 || Loss: nan || timer: 0.2843 sec.
iter 90 || Loss: nan || timer: 0.2835 sec.
iter 100 || Loss: nan || timer: 0.2846 sec.
iter 110 || Loss: nan || timer: 0.2946 sec.
iter 120 || Loss: nan || timer: 0.2860 sec.
iter 130 || Loss: nan || timer: 0.2846 sec.
iter 140 || Loss: nan || timer: 0.2962 sec.
iter 150 || Loss: nan || timer: 0.2989 sec.
iter 160 || Loss: nan || timer: 0.2857 sec.
I've encountered the same one here, have you solve this problem?
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I think the loss is much enormous, you should add two lines: |
I don't change line 114, and then nan loss disappears. |
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Those values of loss: loc_loss, conf_loss are much huge out of the memory, you would utilize the codes: N = num_pos.data.sum().double() loss_l = loss_l.double()
loss_c = loss_c.double()
loss_l /= N
loss_c /= N
And at the train.py, you should using the follow two lines instead of your codes
loc_loss += loss_l.item()
conf_loss += loss_c.item()
with best wish, better luck, good fortune.
…------------------ 原始邮件 ------------------
发件人: "琉璃梦"<[email protected]>;
发送时间: 2019年10月18日(星期五) 晚上10:01
收件人: "amdegroot/ssd.pytorch"<[email protected]>;
抄送: "YUXIAOHONG"<[email protected]>; "Comment"<[email protected]>;
主题: Re: [amdegroot/ssd.pytorch] RuntimeError: The shape of the mask [32, 8732] at index 0 does not match the shape of the indexed tensor [279424, 1] at index 0 (#173)
Pytorch version:
>>> import torch >>> print(torch.__version__) 1.1.0
Python version:
Python 3.6.7 (default, Oct 22 2018, 11:32:17) [GCC 8.2.0] on linux
multibox_loss.py:
Switch the two lines 97,98: loss_c = loss_c.view(num, -1) loss_c[pos] = 0 # filter out pos boxes for now Change line114 N = num_pos.data.sum() -> N = num_pos.data.sum().double() and change the following two lines to: loss_l = loss_l.double() loss_c = loss_c.double()
train.py
loss_l.data[0] >> loss_l.data loss_c.data[0] >> loss_c.data loss.data[0] >> loss.data
And here is my output:
timer: 11.9583 sec. iter 0 || Loss: 11728.9388 || timer: 0.2955 sec. iter 10 || Loss: nan || timer: 0.2843 sec. iter 20 || Loss: nan || timer: 0.2890 sec. iter 30 || Loss: nan || timer: 0.2934 sec. iter 40 || Loss: nan || timer: 0.2865 sec. iter 50 || Loss: nan || timer: 0.2855 sec. iter 60 || Loss: nan || timer: 0.2889 sec. iter 70 || Loss: nan || timer: 0.2857 sec. iter 80 || Loss: nan || timer: 0.2843 sec. iter 90 || Loss: nan || timer: 0.2835 sec. iter 100 || Loss: nan || timer: 0.2846 sec. iter 110 || Loss: nan || timer: 0.2946 sec. iter 120 || Loss: nan || timer: 0.2860 sec. iter 130 || Loss: nan || timer: 0.2846 sec. iter 140 || Loss: nan || timer: 0.2962 sec. iter 150 || Loss: nan || timer: 0.2989 sec. iter 160 || Loss: nan || timer: 0.2857 sec.
I've encountered the same one here, have you solve this problem?
I don't change line 114, and then nan loss disappears.
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good! It work very good! Tank you ! |
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@haibochina What? |
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I think PR are welcommed. |
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thank you @haibochina ,about the issue of lose=nan, your method is very good! |
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I also had a nan loss issue after fixing multibox_loss.py In my case it was because I was trying to use custom annotations and loading them as If anyone else is trying to do the same thing, the correct format is Training works now |
Because of the loss too big, I change line 115 to
solve the issue |
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@TianSong1991, I follow your solution and got it running normally... but after a while (after iter 90) the loss exploded to nan..., did you experience the same thing? |
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with @TianSong1991 solution except the step3 changed to following: |
what's your torch version and python version? |
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When encountered maybe you can change lr=1e-4,when i change ,then timer: 10.1423 sec. |
thanks，this answer solves my problem. |
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I solve the problem if your python torch version is 1.0.1. The solution as follow 1-3 steps: I'm also this answer solved my probelm. |
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Thank you. I've solved the problem. Thank you again.
…------------------ 原始邮件 ------------------
发件人: "HyunJun Lee"<[email protected]>;
发送时间: 2020年10月23日(星期五) 上午10:14
收件人: "amdegroot/ssd.pytorch"<[email protected]>;
抄送: "贺智龙"<[email protected]>; "Comment"<[email protected]>;
主题: Re: [amdegroot/ssd.pytorch] RuntimeError: The shape of the mask [32, 8732] at index 0 does not match the shape of the indexed tensor [279424, 1] at index 0 (#173)
I solve the problem if your python torch version is 1.0.1. The solution as follow 1-3 steps:
step1 and step2 change the multibox_loss.py!
step1: switch the two lines 97,98:
loss_c = loss_c.view(num, -1)
loss_c[pos] = 0 # filter out pos boxes for now
step2: change the line114 N = num_pos.data.sum() to
N = num_pos.data.sum().double()
loss_l = loss_l.double()
loss_c = loss_c.double()
setp 3 change the train.py! step3: change the line188,189,193,196: loss_l.data[0] >> loss_l.data loss_c.data[0] >> loss_c.data loss.data[0] >> loss.data
I'm also this answer solved my probelm.
more correctly,
loss_l = loss_l.double()/N
loss_c = loss_c.doubel()/N
:)
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if loss is |
or batch_size is too small or both |
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There is still a problem. In step 1, it should be changer like this: otherwise the loss will be a 'nan'. |
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If you are using PyTorch 2, please follow this:
This solved my problem! |
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@sonukiller I'm still getting nan loss even with your suggestion and the previous one. Do you suggest t remove all the .data attribute and substitute Variable with classic torch.tensor? |
and others
rps@rps:~/桌面/ssd.pytorch$ python3 train.py
/home/rps/桌面/ssd.pytorch/ssd.py:34: UserWarning: volatile was removed and now has no effect. Use
with torch.no_grad():instead.self.priors = Variable(self.priorbox.forward(), volatile=True)
/home/rps/桌面/ssd.pytorch/layers/modules/l2norm.py:17: UserWarning: nn.init.constant is now deprecated in favor of nn.init.constant_.
init.constant(self.weight,self.gamma)
Loading base network...
Initializing weights...
train.py:214: UserWarning: nn.init.xavier_uniform is now deprecated in favor of nn.init.xavier_uniform_.
init.xavier_uniform(param)
Loading the dataset...
Training SSD on: VOC0712
Using the specified args:
Namespace(basenet='vgg16_reducedfc.pth', batch_size=32, cuda=True, dataset='VOC', dataset_root='/home/rps/data/VOCdevkit/', gamma=0.1, lr=0.001, momentum=0.9, num_workers=4, resume=None, save_folder='weights/', start_iter=0, visdom=False, weight_decay=0.0005)
train.py:169: UserWarning: volatile was removed and now has no effect. Use
with torch.no_grad():instead.targets = [Variable(ann.cuda(), volatile=True) for ann in targets]
Traceback (most recent call last):
File "train.py", line 255, in
train()
File "train.py", line 178, in train
loss_l, loss_c = criterion(out, targets)
File "/home/rps/anaconda3/lib/python3.6/site-packages/torch/nn/modules/module.py", line 491, in call
result = self.forward(*input, **kwargs)
File "/home/rps/桌面/ssd.pytorch/layers/modules/multibox_loss.py", line 97, in forward
loss_c[pos] = 0 # filter out pos boxes for now
RuntimeError: The shape of the mask [32, 8732] at index 0 does not match the shape of the indexed tensor [279424, 1] at index 0
anyone helps,please...
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