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Fix test_gluon.py:test_sync_batchnorm when number of GPUS > 4 #16835

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Nov 21, 2019
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Fix test_gluon.py:test_sync_batchnorm when number of GPUS > 4 #16835

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6 changes: 4 additions & 2 deletions tests/python/unittest/test_gluon.py
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Original file line number Diff line number Diff line change
Expand Up @@ -868,11 +868,13 @@ def _syncParameters(bn1, bn2, ctx):

cfgs = [(1, False)]
num_gpus = mx.context.num_gpus()
batch_size = 24
for i in range(1, num_gpus + 1):
cfgs.append((i, True))
if batch_size % i == 0:
cfgs.append((i, True))
for ndev, cuda in cfgs:
# check with unsync version
for shape in [(24, 2), (24, 3, 4), (24, 4, 4, 4), (24, 5, 6, 4, 4)]:
for shape in [(batch_size, 2), (batch_size, 3, 4), (batch_size, 4, 4, 4), (batch_size, 5, 6, 4, 4)]:
print(str((ndev, cuda, shape)))
for i in range(10):
_check_batchnorm_result(mx.nd.random.uniform(shape=shape,
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