Add TF example

[TommyLike]

See above

[TommyLike]

@asifdxtreme Related image volcanosh/example-tf has been uploaded to docker hub already, please have a try.

[asifdxtreme]

@TommyLike Thanks..I will check it now. Do we need to take the latest volcano or 0.1.0 version of volcano should be fine?

[TommyLike]

@asifdxtreme version is not strict limited, the example only needs the basic volcano feature and the env plugins.

[asifdxtreme]

/lgtm

[asifdxtreme]

I tried this example and it works fine

k log tensorflow-benchmark-worker-0 --tail=20 -f
log is DEPRECATED and will be removed in a future version. Use logs instead.
2019-04-25 06:23:26.245134: I tensorflow/core/platform/cpu_feature_guard.cc:137] Your CPU supports instructions that this TensorFlow binary was not compiled to use: SSE4.1 SSE4.2 AVX AVX2 FMA
E0425 06:23:26.245643820      15 ev_epoll1_linux.c:1051]     grpc epoll fd: 3
2019-04-25 06:23:26.252983: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize GrpcChannelCache for job ps -> {0 -> tensorflow-benchmark-ps-0.tensorflow-benchmark:2222}
2019-04-25 06:23:26.253090: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize GrpcChannelCache for job worker -> {0 -> localhost:2222}
2019-04-25 06:23:26.253464: I tensorflow/core/distributed_runtime/rpc/grpc_server_lib.cc:324] Started server with target: grpc://localhost:2222
TensorFlow:  1.5
Model:       resnet50
Mode:        training
SingleSess:  False
Batch size:  32 global
             32 per device
Devices:     ['/job:worker/task:0/cpu:0']
Data format: NHWC
Optimizer:   sgd
Variables:   parameter_server
Sync:        True
==========
Generating model
2019-04-25 06:23:40.545398: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:23:50.545612: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:24:00.545830: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:24:10.546048: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:24:20.546275: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:24:30.546500: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:24:40.546731: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:24:50.546958: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:25:00.547178: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:25:10.547410: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:25:20.547638: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:25:30.547854: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:25:40.548082: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:25:50.548296: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:26:00.548519: I tensorflow/core/distributed_runtime/master.cc:221] CreateSession still waiting for response from worker: /job:ps/replica:0/task:0
2019-04-25 06:26:10.381635: I tensorflow/core/distributed_runtime/master_session.cc:1008] Start master session cdcdb85bfcadfc7e with config: intra_op_parallelism_threads: 1 gpu_options { force_gpu_compatible: true } allow_soft_placement: true
Running warm up
Done warm up
Step	Img/sec	loss
1	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	10.224
10	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	8.759
20	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	8.227
30	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	8.199
40	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	9.441
50	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	8.111
60	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	8.722
70	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	7.964
80	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	7.839
90	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	7.953
100	images/sec: 0.6 +/- 0.0 (jitter = 0.0)	8.004
----------------------------------------------------------------
total images/sec: 0.57
----------------------------------------------------------------

[k82cn]

/lgtm