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https://issues.apache.org/jira/browse/SINGA-29?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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wangwei updated SINGA-29:
-------------------------
Description:
This ticket is to update the NeuralNet class to enable users customize the
partitioning of each layer. It also cleans the code for NeuralNet class and
Graph class.
The are two places where the user can configure the partitioning of the neural
net.
* partition_dim for the whole neural net (in NetProto)
* partition_dim for each layer (in LayerProto)
The partition_dim of the net will be copied to each layer if the layer's
partition_dim is not set; Otherwise, the layer's own partition_dim will be used.
Currently we support three values of partition_dim:
* partition_dim = -1, no partition
* partition_dim = 0, partition along the batch dimension, e.g., partition one
mini-batch of 100 images into two partitions, each with 50 images.
* partition_dim = 1, partition along feature dimension, e.g., if we partition
one mini-batch of 100 images, each represented using 128-d feature vector, into
two partitions. Each partition would have 100 images, each represented using
64-d feature vector.
Simple partitioning schemes will be tested firstly, e.g., partition the whole
net with partition_dim = 0. Complex partitioning scheme, e.g., hybrid
partitioning (some layers are partitioned along dimension 0 and some layers are
partitioned along dimension 1 or -1) will be tested later. Advanced partition
like assigning some layers to one worker and other layers to another worker
will be supported by customizing partition_id of LayerProto in the future.
NeuralNet is constructed as follows:
Neural net configuration is converted to a graph with one node per (sub) layer.
Some connection nodes will be inserted automatically if the neural net needs
partitioning (e.g., group size >1). After topology sort, one Layer will be
created per node and layers will be connected accordingly. The Graph class
provides functions for adding/removing nodes and edges, and sorting nodes in
topology order. Each node stores the configuration of one layer.
was:
This ticket is to update the NeuralNet class to enable users customize the
partitioning of each layer. It also cleans the code for NeuralNet class and
Graph class.
The are two places where the user can configure the partitioning of the neural
net.
* partition_dim for the whole neural net (in NetProto)
* partition_dim for each layer (in LayerProto)
The partition_dim of the net will be copied to each layer if the layer's
partition_dim is not set; Otherwise, the layer's own partition_dim will be used.
Currently we support three values of partition_dim:
* partition_dim = -1, no partition
* partition_dim = 0, partition along the batch dimension, e.g., partition one
mini-batch of 100 images into two partitions, each with 50 images.
* partition_dim = 1, partition along feature dimension, e.g., if we partition
one mini-batch of 100 images, each represented using 128-d feature vector, into
two partitions. Each partition would have 100 images, each represented using
64-d feature vector.
NeuralNet is constructed as follows:
Neural net configuration is converted to a graph with one node per (sub) layer.
Some connection nodes will be inserted automatically if the neural net needs
partitioning (e.g., group size >1). After topology sort, one Layer will be
created per node and layers will be connected accordingly. The Graph class
provides functions for adding/removing nodes and edges, and sorting nodes in
topology order. Each node stores the configuration of one layer.
> Update NeuralNet class to enable customizing layer partition type
> -----------------------------------------------------------------
>
> Key: SINGA-29
> URL: https://issues.apache.org/jira/browse/SINGA-29
> Project: Singa
> Issue Type: Bug
> Reporter: wangwei
> Assignee: wangwei
>
> This ticket is to update the NeuralNet class to enable users customize the
> partitioning of each layer. It also cleans the code for NeuralNet class and
> Graph class.
> The are two places where the user can configure the partitioning of the
> neural net.
> * partition_dim for the whole neural net (in NetProto)
> * partition_dim for each layer (in LayerProto)
> The partition_dim of the net will be copied to each layer if the layer's
> partition_dim is not set; Otherwise, the layer's own partition_dim will be
> used.
> Currently we support three values of partition_dim:
> * partition_dim = -1, no partition
> * partition_dim = 0, partition along the batch dimension, e.g., partition one
> mini-batch of 100 images into two partitions, each with 50 images.
> * partition_dim = 1, partition along feature dimension, e.g., if we partition
> one mini-batch of 100 images, each represented using 128-d feature vector,
> into two partitions. Each partition would have 100 images, each represented
> using 64-d feature vector.
> Simple partitioning schemes will be tested firstly, e.g., partition the whole
> net with partition_dim = 0. Complex partitioning scheme, e.g., hybrid
> partitioning (some layers are partitioned along dimension 0 and some layers
> are partitioned along dimension 1 or -1) will be tested later. Advanced
> partition like assigning some layers to one worker and other layers to
> another worker will be supported by customizing partition_id of LayerProto in
> the future.
> NeuralNet is constructed as follows:
> Neural net configuration is converted to a graph with one node per (sub)
> layer. Some connection nodes will be inserted automatically if the neural net
> needs partitioning (e.g., group size >1). After topology sort, one Layer will
> be created per node and layers will be connected accordingly. The Graph class
> provides functions for adding/removing nodes and edges, and sorting nodes in
> topology order. Each node stores the configuration of one layer.
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