[GitHub] piiswrong closed pull request #8597: Add nightly test for dist_device_sync

[GitBox <gi...@apache.org>]

piiswrong closed pull request #8597: Add nightly test for dist_device_sync
URL: https://github.com/apache/incubator-mxnet/pull/8597
 
 
   

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diff --git a/tests/nightly/dist_device_sync_kvstore.py b/tests/nightly/dist_device_sync_kvstore.py
new file mode 100644
index 0000000000..75b48f42c5
--- /dev/null
+++ b/tests/nightly/dist_device_sync_kvstore.py
@@ -0,0 +1,95 @@
+#!/usr/bin/env python
+
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import sys
+sys.path.insert(0, "../../python/")
+import mxnet as mx
+import numpy as np
+import numpy.random as rnd
+import time
+
+def check_diff_to_scalar(A, x, rank=None):
+    """ assert A == x"""
+    assert(np.sum(np.abs((A - x).asnumpy())) == 0), (rank, A.asnumpy(), x)
+
+# setup
+keys = ['3', '5', '7']
+init_test_keys = [str(i) for i in range(200,300)]
+init_test_keys_big = [str(i) for i in range(300,400)]
+init_test_keys_device = [str(i) for i in range(400,500)]
+init_test_keys_device_big = [str(i) for i in range(500,600)]
+
+rate = 2
+shape = (2, 3)
+big_shape = (1200, 1200)        # bigger than MXNET_KVSTORE_BIGARRAY_BOUND
+
+kv = mx.kv.create('dist_device_sync')
+
+def init_kv():
+    # init kv dns keys
+    kv.init(keys, [mx.nd.ones(shape)] * len(keys))
+    kv.init('99', mx.nd.ones(big_shape))
+    # worker info
+    my_rank = kv.rank
+    nworker = kv.num_workers
+    # init updater on servers
+    kv.set_optimizer(mx.optimizer.create('test', rescale_grad=rate))
+    return kv, my_rank, nworker
+
+def test_sync_push_pull():
+    kv, my_rank, nworker = init_kv()
+    num_gpus = 2
+    def check_default_keys(kv, my_rank, nworker):
+        nrepeat = 3
+        # checks pull after push in loop, because behavior during
+        # consecutive pushes doesn't offer any guarantees
+        for i in range(nrepeat):
+            scale = my_rank + 1
+            kv.push('3', [mx.nd.ones(shape, ctx=mx.gpu(j)) * scale for j in range(num_gpus)])
+            kv.push('99', [mx.nd.ones(big_shape, ctx=mx.gpu(j)) * scale for j in range(num_gpus)])
+            num = (nworker + 1) * nworker * rate * num_gpus / 2 * (i + 1) + 1
+            val = mx.nd.zeros(shape)
+            kv.pull('3', out=val)
+            check_diff_to_scalar(val, num)
+            val2 = mx.nd.zeros(big_shape)
+            kv.pull('99', out=val2)
+            check_diff_to_scalar(val2, num)
+
+    check_default_keys(kv, my_rank, nworker)
+    print('worker ' + str(my_rank) + ' is done')
+
+def test_sync_init():
+    def check_init(kv, cur_keys, cur_shape, device=False):
+        ctx = mx.gpu(0) if device else mx.cpu()
+        val = [mx.nd.zeros(cur_shape, ctx) for i in cur_keys]
+        for i in range(len(cur_keys)):
+            expected = i
+            kv.init(cur_keys[i], [mx.nd.ones(cur_shape, ctx) * i])
+            kv.pull(cur_keys[i], out=val[i])
+            check_diff_to_scalar(val[i], expected)
+    check_init(kv, init_test_keys, shape)
+    check_init(kv, init_test_keys_big, big_shape)
+    check_init(kv, init_test_keys_device, shape, device=True)
+    check_init(kv, init_test_keys_device_big, big_shape, device=True)
+    my_rank = kv.rank
+    print('worker ' + str(my_rank) + ' is initialized')
+
+if __name__ == "__main__":
+    test_sync_init()
+    test_sync_push_pull()


 

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