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Configure defaults for optimal Loihi performance #126

Merged
merged 3 commits into from
Jun 11, 2019
Merged

Configure defaults for optimal Loihi performance #126

merged 3 commits into from
Jun 11, 2019

Commits on Jun 11, 2019

  1. Mark sparse tests unsupported 

    And raise decent errors as soon as possible.

Co-authored-by: Trevor Bekolay <[email protected]>
    @drasmuss @tbekolay
    drasmuss and tbekolay committed Jun 11, 2019
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  2. Decrease lower bound on default intercept 

    Since intercepts are applied after the encoders, it's only the upper
bound that needs to be less than one to avoid high gains. The lower
bound should go to -1.

This changed the intercepts for test_nengo_comm_channel_compare,
causing it to fail. The test was fragile because it did not apply
sufficient filtering to the output. The new test filters the outputs
more and can thus have tigher tolerances (passing on 10 seeds).
    @hunse @tbekolay
    hunse authored and tbekolay committed Jun 11, 2019
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  3. Apply neuron input transform on-chip 

    The transform is now applied on-chip When doing a connection from
a host object to on-chip neurons. This helps avoid scaling issues
(e.g. if the transform has output outside [-1, 1]), and avoids
large off-chip transforms (since such transforms are often large).
    @hunse @tbekolay
    hunse authored and tbekolay committed Jun 11, 2019
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