Python workspace.Blobs方法代碼示例

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def create_blobs_if_not_existed(blob_names):
    existd_names = set(workspace.Blobs())
    for xx in blob_names:
        if xx not in existd_names:
            workspace.CreateBlob(str(xx)) 

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def save_model_to_weights_file(weights_file, model):
    """Stash model weights in a dictionary and pickle them to a file. We map
    GPU device scoped names to unscoped names (e.g., 'gpu_0/conv1_w' ->
    'conv1_w').
    """
    logger.info(
        'Saving parameters and momentum to {}'.format(
            os.path.abspath(weights_file)))
    blobs = {}
    # Save all parameters
    for param in model.params:
        scoped_name = str(param)
        unscoped_name = c2_utils.UnscopeName(scoped_name)
        if unscoped_name not in blobs:
            logger.debug(' {:s} -> {:s}'.format(scoped_name, unscoped_name))
            blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save momentum
    for param in model.TrainableParams():
        scoped_name = str(param) + '_momentum'
        unscoped_name = c2_utils.UnscopeName(scoped_name)
        if unscoped_name not in blobs:
            logger.debug(' {:s} -> {:s}'.format(scoped_name, unscoped_name))
            blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save preserved blobs
    for scoped_name in workspace.Blobs():
        if scoped_name.startswith('__preserve__/'):
            unscoped_name = c2_utils.UnscopeName(scoped_name)
            if unscoped_name not in blobs:
                logger.debug(
                    ' {:s} -> {:s} (preserved)'.format(
                        scoped_name, unscoped_name))
                blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    cfg_yaml = envu.yaml_dump(cfg)
    save_object(dict(blobs=blobs, cfg=cfg_yaml), weights_file) 

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def get_ws_blobs(blob_names=None):
    ''' Get blobs in 'blob_names' in the default workspace,
        get all blobs if blob_names is None '''
    blobs = {}
    if blob_names is None:
        blob_names = workspace.Blobs()
    blobs = {x: workspace.FetchBlob(x) for x in blob_names}

    return blobs 

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def print_all(self):
        # approach 1: all
        print(workspace.Blobs(), end='\n')
        for _, l in enumerate(workspace.Blobs()):
            print(l)
            print(self.FetchBlobWrapper(l))
        # approach 2: only summary
        # for param in self.model.params:
        #    self.model.Summarize(param, [], to_file=1)
        #    self.model.Summarize(self.model.param_to_grad[param], [], to_file=1) 

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def save_model_to_weights_file(weights_file, model):
    """Stash model weights in a dictionary and pickle them to a file. We map
    GPU device scoped names to unscoped names (e.g., 'gpu_0/conv1_w' ->
    'conv1_w').
    """
    logger.info(
        'Saving parameters and momentum to {}'.format(
            os.path.abspath(weights_file)))
    blobs = {}
    # Save all parameters
    for param in model.params:
        scoped_name = str(param)
        unscoped_name = c2_utils.UnscopeName(scoped_name)
        if unscoped_name not in blobs:
            logger.debug(' {:s} -> {:s}'.format(scoped_name, unscoped_name))
            blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save momentum
    for param in model.TrainableParams():
        scoped_name = str(param) + '_momentum'
        unscoped_name = c2_utils.UnscopeName(scoped_name)
        if unscoped_name not in blobs:
            logger.debug(' {:s} -> {:s}'.format(scoped_name, unscoped_name))
            blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save preserved blobs
    for scoped_name in workspace.Blobs():
        if scoped_name.startswith('__preserve__/'):
            unscoped_name = c2_utils.UnscopeName(scoped_name)
            if unscoped_name not in blobs:
                logger.debug(
                    ' {:s} -> {:s} (preserved)'.format(
                        scoped_name, unscoped_name))
                blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    cfg_yaml = yaml.dump(cfg)
    save_object(dict(blobs=blobs, cfg=cfg_yaml), weights_file) 

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def initialize_gpu_from_weights_file(model, weights_file, gpu_id=0):
    """Initialize a network with ops on a specific GPU. If you use CUDA_VISIBLE_DEVICES to target specific GPUs, 
    Caffe2 will automatically map logical GPU ids (starting from 0) to the physical GPUs specified in CUDA_VISIBLE_DEVICES.
    """
    logger = logging.getLogger(__name__)

    logger.info('Loading weights from: {}'.format(weights_file))
    ws_blobs = workspace.Blobs()
    with open(weights_file, 'r') as f:
        src_blobs = pickle.load(f)
    if 'cfg' in src_blobs:
        print('------------cfg exist-----------------------------')
    if 'blobs' in src_blobs:
        # Backwards compat--dictionary used to be only blobs, now they are stored under the 'blobs' key
        src_blobs = src_blobs['blobs']
    # Initialize weights on GPU gpu_id only
    unscoped_param_names = OrderedDict()  # Print these out in model order
    for blob in model.params:
        unscoped_param_names[UnscopeName(str(blob))] = True
    with NamedCudaScope(gpu_id):
        for unscoped_param_name in unscoped_param_names.keys():
            if (unscoped_param_name.find(']_') >= 0 and unscoped_param_name not in src_blobs):
                # Special case for sharing initialization from a pretrained model: If a blob named '_[xyz]_foo' is in model.params and not
                # in the initialization blob dictionary, then load source blob 'foo' into destination blob '_[xyz]_foo'
                src_name = unscoped_param_name[
                    unscoped_param_name.find(']_') + 2:]
            else:
                src_name = unscoped_param_name
            if src_name not in src_blobs:
                logger.info('{:s} not found'.format(src_name))
                continue
            dst_name = core.ScopedName(unscoped_param_name)
            has_momentum = src_name + '_momentum' in src_blobs
            has_momentum_str = ' [+ momentum]' if has_momentum else ''
            logger.debug( '{:s}{:} loaded from weights file into {:s}: {}'.format( src_name, has_momentum_str, dst_name, src_blobs[src_name].shape ) )
            if dst_name in ws_blobs:
                # If the blob is already in the workspace, make sure that it matches the shape of the loaded blob
                ws_blob = workspace.FetchBlob(dst_name)
                assert ws_blob.shape == src_blobs[src_name].shape, ('Workspace blob {} with shape {} does not match weights file shape {}').format(
                        src_name, ws_blob.shape, src_blobs[src_name].shape)
            workspace.FeedBlob( dst_name, src_blobs[src_name].astype(np.float32, copy=False) )
            if has_momentum:
                workspace.FeedBlob( dst_name + '_momentum', src_blobs[src_name + '_momentum'].astype(np.float32, copy=False) )

    # We preserve blobs that are in the weights file but not used by the current model. We load these into CPU memory under the '__preserve__/' namescope.
    # These blobs will be stored when saving a model to a weights file. This feature allows for alternating optimization of Faster R-CNN in which blobs
    # unused by one step can still be preserved forward and used to initialize another step.
    for src_name in src_blobs.keys():
        if (src_name not in unscoped_param_names and
                not src_name.endswith('_momentum') and
                src_blobs[src_name] is not None):
            with CpuScope():
                workspace.FeedBlob('__preserve__/{:s}'.format(src_name), src_blobs[src_name])
                logger.debug('{:s} preserved in workspace (unused)'.format(src_name)) 

# 需要導入模塊: from caffe2.python import workspace [as 別名]
# 或者: from caffe2.python.workspace import Blobs [as 別名]
def save_model_to_weights_file(weights_file, model):
    """Stash model weights in a dictionary and pickle them to a file. We map
    GPU device scoped names to unscoped names (e.g., 'gpu_0/conv1_w' ->
    'conv1_w').
    """
    logger.info(
        'Saving parameters and momentum to {}'.format(
            os.path.abspath(weights_file)))
    blobs = {}
    # Save all parameters
    for param in model.params:
        scoped_name = str(param)
        unscoped_name = utils.blob.unscope_name(scoped_name)
        if unscoped_name not in blobs:
            logger.debug(' {:s} -> {:s}'.format(scoped_name, unscoped_name))
            blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save momentum
    for param in model.TrainableParams():
        scoped_name = str(param) + '_momentum'
        unscoped_name = utils.blob.unscope_name(scoped_name)
        if unscoped_name not in blobs:
            logger.debug(' {:s} -> {:s}'.format(scoped_name, unscoped_name))
            blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save preserved blobs
    for scoped_name in workspace.Blobs():
        if scoped_name.startswith('__preserve__/'):
            unscoped_name = utils.blob.unscope_name(scoped_name)
            if unscoped_name not in blobs:
                logger.debug(
                    ' {:s} -> {:s} (preserved)'.format(
                        scoped_name, unscoped_name))
                blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    # Save the _rm/_riv for the models with batch norm
    for scoped_name in workspace.Blobs():
        if scoped_name.endswith('_rm') or scoped_name.endswith('_riv'):
            unscoped_name = utils.blob.unscope_name(scoped_name)
            if unscoped_name not in blobs:
                logger.debug(
                    ' {:s} -> {:s} (preserved)'.format(
                        scoped_name, unscoped_name))
                blobs[unscoped_name] = workspace.FetchBlob(scoped_name)
    cfg_yaml = yaml.dump(cfg)
    robust_pickle_dump(dict(blobs=blobs, cfg=cfg_yaml), weights_file)