move loadcaffe to utils

tensorpack/dataflow/dataset/.gitignore

 mnist_data
 cifar10_data
+svhn_data

tensorpack/utils/__init__.py

@@ -4,8 +4,11 @@
 
 from pkgutil import walk_packages
 import os
-import tensorflow as tf
-import numpy as np
+
+"""
+Common utils.
+These utils should be irrelevant to tensorflow.
+"""
 
 def global_import(name):
     p = __import__(name, globals(), None, level=1)
@@ -13,32 +16,4 @@ def global_import(name):
     for k in lst:
         globals()[k] = p.__dict__[k]
 global_import('naming')
-#global_import('sessinit')
 global_import('utils')
-
-# TODO move this utils to another file
-#def get_default_sess_config(mem_fraction=0.5):
-    #"""
-    #Return a better config to use as default.
-    #Tensorflow default session config consume too much resources
-    #"""
-    #conf = tf.ConfigProto()
-    #conf.gpu_options.per_process_gpu_memory_fraction = mem_fraction
-    #conf.gpu_options.allocator_type = 'BFC'
-    #conf.allow_soft_placement = True
-    #return conf
-
-#def get_global_step_var():
-    #""" get global_step variable in the current graph"""
-    #try:
-        #return tf.get_default_graph().get_tensor_by_name(GLOBAL_STEP_VAR_NAME)
-    #except KeyError:
-        #var = tf.Variable(
-            #0, trainable=False, name=GLOBAL_STEP_OP_NAME)
-        #return var
-
-#def get_global_step():
-    #""" get global_step value with current graph and session"""
-    #return tf.train.global_step(
-        #tf.get_default_session(),
-        #get_global_step_var())