The definition of a Neural Network architecture is one of the most critical
and challenging tasks to perform. In this paper, we propose ParallelMLPs.
ParallelMLPs is a procedure to enable the training of several independent
Multilayer Perceptron Neural Networks with a different number of neurons and
activation functions in parallel by exploring the principle of locality and
parallelization capabilities of modern CPUs and GPUs. The core idea of this
technique is to use a Modified Matrix Multiplication that replaces an ordinal
matrix multiplication by two simple matrix operations that allow separate and
independent paths for gradient flowing, which can be used in other scenarios.
We have assessed our algorithm in simulated datasets varying the number of
samples, features and batches using 10,000 different models. We achieved a
training speedup from 1 to 4 orders of magnitude if compared to the sequential