KeyKy commented on issue #3183: Large Rec File Memory and Speed Issues
   I have the same problem when i train ssd or imagenet using .rec file and i 
check the usage of memory in top. At the beginning of training is 5.7% , after 
a while (3~4h) it takes 27% and finally it run out of my memory (waked up by 
the alarm message).
   I tried to set the prefetch_buffer = 1 but the accuracy of my model drop to 
20% (I set the prefetch_buffer back to 4, the accuracy is right! It is so 
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