[jira] [Created] (MXNET-262) Implement mx.random.seed_context to seed random number generators of a specific device context

["Deokjae Lee (JIRA)" <ji...@apache.org>]

Deokjae Lee created MXNET-262:
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             Summary: Implement mx.random.seed_context to seed random number generators of a specific device context
                 Key: MXNET-262
                 URL: https://issues.apache.org/jira/browse/MXNET-262
             Project: Apache MXNet
          Issue Type: New Feature
            Reporter: Deokjae Lee


This PR introduces a function `mx.random.seed_context` to seed random number generators of a specific device context. `mx.random.seed_context(seed, ctx)` seeds the parallel and non-parallel generators of `ctx` where `ctx` is optional and the default is the current context. The random number sequence generated on the device is completely determined by the seed, differently from existing `mx.random.seed` which implicitly uses the device id of each context together with the given seed. Using device id is reasonable to seed all generators at once with a given seed, but to reproduce the same random number sequence we need to set the running context besides seeding with the same number. Sometimes setting a context would be inconvenient or the running context could be not deterministic. `mx.random.seed_context` would be helpful in such cases.



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