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This node can be used to cook a different TOP network. The other network can exist in the same .hip file or an external file, and will be cooked via the active scheduler. The other TOP network is evaluated in a separate process from the current one.
This node works in two steps. First work items are generated to cook the external TOP network referred to by the TOP Path parameter. The attributes and input files associated with each work in this node are made accessible to the fetched network using the standard work item JSON format. The path to the JSON file is exported as
$PDG_FETCH_JSON_FILE in the environment used to cook the fetched network. The fetched network can use a TOP Fetch Input node to load that work item into its own network.
When the remote TOP network is cooked, the work items on the output node of that network are saved to disk and reported back to PDG. Then these items are re-created in the TOP Fetch node. The items visible on the TOP Fetch node are those re-created items.
$HH/help/files/pdg_examples/top_topfetch example shows how you can use this node to fetch a TOP network.
Determines when this node will generate work items. You should generally leave this set to “Automatic” unless you know the node requires a specific generation mode, or that the work items need to be generated dynamically.
All Upstream Items are Generated
This node will generate work items once all of the input nodes have generated their work items.
All Upstream Items are Cooked
This node will generate work items once all of the input nodes have cooked their work items.
Each Upstream Item is Cooked
This node will generate work items each time a work item in an input node is cooked.
The generation mode is selected based on the generation mode of the input nodes. If any of the input nodes are generating work items when their inputs cook, this node will be set to Each Upstream Item is Cooked. Otherwise, it will be set to All Upstream Items are Generated.
The path to the TOP network within the
.hip file specified in the Hip
File Path parameter.
Hip File Path
The path to the
.hip file that contains the TOP network to fetch.
Custom Output Dir
When on, this parameter determines where the output
.json files are written to for the work items that were fetched from TOP Path. When off, the
.json files are written to the working directory of the scheduler used to cook the fetched node.
Load Work Items from Fetched Network
When on, this parameter recreates the output work items from the fetched network in this node. In order to do this, the node is set to dynamic because it relies on cooked outputs produced during the fetch operation. When off, the node creates exactly one work item for each fetch operation, and the node is set to static because it no longer depends on cooked outputs. Output work items are stored in a
.json file on those work item(s).
TOP Scheduler Override
This parameter overrides the TOP scheduler for this node.
Work Item Label
Determines how the node should label its work items. This parameter allows you to assign non-unique label strings to your work items which are then used to identify the work items in the attribute panel, task bar, and scheduler job names.
The work items on this node do not have a label.
Inherit From Upstream Item
The work items inherit their labels from their parent work items.
The work item label is set to the Label Expression custom expression which is evaluated for each item.
Node Defines Label
The work item label is defined in the node’s internal logic.
When on, this parameter specifies a custom label for work items created by this node. The parameter can be an expression that includes references to work item attributes or built-in properties. For example,
$OS: @pdg_frame will set the label of each work item based on its frame value.
Work Item Priority
This parameter determines how the current scheduler prioritizes the work items in this node.
Inherit From Upstream Item
The work items inherit their priority from their parent items. If a work item has no parent, its priority is set to 0.
The work item priority is set to the value of Priority Expression.
Node Defines Priority
This parameter specifies an expression for work item priority. The expression is evaluated for each work item in the node.
This parameter is only available when Work Item Priority is set to Custom Expression.