Validation

[noisychannel]

So it looks like a bunch of validation jobs happen altogether towards the end. And it doesn't look like anything changes. Any idea why this happens?

INFO:root:epoch=4, MT a->b valid_err=53.3 INFO:root:epoch=4, MT b->a valid_err=49.5 INFO:root:epoch=5 INFO:root:epoch=5, MT a->b valid_err=53.3 INFO:root:epoch=5, MT b->a valid_err=49.5 INFO:root:epoch=6 INFO:root:epoch=6, MT a->b valid_err=53.3 INFO:root:epoch=6, MT b->a valid_err=49.5 INFO:root:epoch=7 INFO:root:epoch=7, MT a->b valid_err=53.3 INFO:root:epoch=7, MT b->a valid_err=49.5 INFO:root:epoch=8 INFO:root:epoch=8, MT a->b valid_err=53.3 INFO:root:epoch=8, MT b->a valid_err=49.5 INFO:root:epoch=9 INFO:root:epoch=9, MT a->b valid_err=53.3 INFO:root:epoch=9, MT b->a valid_err=49.5 INFO:root:epoch=10 INFO:root:epoch=10, MT a->b valid_err=53.3 INFO:root:epoch=10, MT b->a valid_err=49.5 INFO:root:epoch=11 INFO:root:epoch=11, MT a->b valid_err=53.3 INFO:root:epoch=11, MT b->a valid_err=49.5 INFO:root:epoch=12 INFO:root:epoch=12, MT a->b valid_err=53.3 INFO:root:epoch=12, MT b->a valid_err=49.5 INFO:root:epoch=13 INFO:root:epoch=13, MT a->b valid_err=53.3 INFO:root:epoch=13, MT b->a valid_err=49.5 INFO:root:epoch=14 INFO:root:epoch=14, MT a->b valid_err=53.3 INFO:root:epoch=14, MT b->a valid_err=49.5 INFO:root:epoch=15 INFO:root:epoch=15, MT a->b valid_err=53.3 INFO:root:epoch=15, MT b->a valid_err=49.5 INFO:root:epoch=16 INFO:root:epoch=16, MT a->b valid_err=53.3 INFO:root:epoch=16, MT b->a valid_err=49.5 INFO:root:epoch=17 INFO:root:epoch=17, MT a->b valid_err=53.3 INFO:root:epoch=17, MT b->a valid_err=49.5 INFO:root:epoch=18 INFO:root:epoch=18, MT a->b valid_err=53.3 INFO:root:epoch=18, MT b->a valid_err=49.5 INFO:root:epoch=19