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Fei Hu edited comment on SYSTEMML-1774 at 7/17/17 7:00 PM: ----------------------------------------------------------- cc [Matthias Boehm | https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mboehm7] was (Author: tenma): cc [mailto:Matthias Boehm | mboe...@gmail.com] > Improve Parfor parallelism for deep learning > -------------------------------------------- > > Key: SYSTEMML-1774 > URL: https://issues.apache.org/jira/browse/SYSTEMML-1774 > Project: SystemML > Issue Type: Improvement > Components: Algorithms, Compiler, ParFor > Affects Versions: SystemML 1.0 > Reporter: Fei Hu > Labels: deeplearning > > When running the [distributed MNIST LeNet example | > https://github.com/apache/systemml/blob/master/scripts/nn/examples/mnist_lenet_distrib_sgd.dml], > each mini-batch could ideally run in parallel without interaction. We try to > force {{parfor (j in 1:parallel_batches)}} at line 137 of > {{nn/examples/mnist_lenet_distrib_sgd.dml}} to be {{parfor (j in > 1:parallel_batches, mode=REMOTE_SPARK, opt=CONSTRAINED)}} use > {{REMOTE_SPARK}} mode, but got some errors about > {{org.apache.sysml.runtime.DMLRuntimeException: Not supported: Instructions > of type other than CP instructions}}. More log information can be found at > the following comments. One example of the errors is that at the convolution > layer, we need to randomly generate a matrix, but SystemML choose > {{RandSPInstruction}} instead of {{DataGenCPInstruction}}, which may be > because SystemML could not determine the row number of the matrix. For this > distributed MNIST LeNet example, using CPInstruction may achieve better > performance. -- This message was sent by Atlassian JIRA (v6.4.14#64029)