This is the most common solution for OOM error Since iterations are the number of batches needed to complete one epoch, lowering the batch size of the inputs will lessen the amount of data the processes the GPU needs to hold in memory for the duration of the iteration. It is a function of the amount of GPU RAM that can be accessed. This error often occurs with particularly large data types, like high-resolution images, or when batch sizes are too large, or when multiple processes are running at the same time. What causes Out Of Memory (OOM) errors?Īn out of memory means the GPU has run out of resources that it can allocate for the assigned task. Running these same processes on a GPU can add project-changing efficiency to training times. Work like transformations on image or text data can create bottlenecks that impede performance. This pre-processing can take up to 65% of epoch time, as detailed in this recent study.
In many deep learning frameworks and implementations, it is common perform transformations on data using the CPU prior to switching to the GPU for the higher order processing. GPU Bottlenecks and Blockers Preprocessing in the CPU By using these tools to track information like power draw, utilization, and percentage of memory used, users can better understand where things went wrong when things go wrong. Fortunately, GPUs come with built-in and external monitoring tools. Furthermore, it can be very easy to overload these machines, triggering an out of memory error, as the scope of the machine's capabilities to solve the assigned task is easily exceeded. In practice, performing deep learning calculations is computationally expensive even if done on a GPU. Even better performance can be achieved by tweaking operation parameters to efficiently use GPU resources." (1) Many operations, especially those representable as matrix multiplies, will see good acceleration right out of the box. "GPUs accelerate machine learning operations by performing calculations in parallel. GPUs are the premiere hardware for most users to perform deep and machine learning tasks.
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