Data processing system

A data processing system comprising:

• a host processor to execute one or more operating systems, each operating system comprising one or more applications;
• a data processing resource to provide a shared resource for a plurality of the applications;
• one or more input/output interfaces to submit requests to perform processing jobs to the data processing resource;
• the data processing resource comprising:
• control circuitry to receive, from the host processor, a request for the data processor unit to perform a processing job;
• an iterator unit to process the request and generate a workload comprising one or more tasks for the requested processing job;
• one or more execution units to perform the one or more tasks, wherein the iterator unit is configured to allocate the one or more tasks to the one or more execution units based on control signals from the control circuitry,
• wherein, upon receiving a notification of a change in allocation of an input/output interface, the control circuitry is configured to prepare the one or more execution units for a stop by controlling the iterator unit to reduce an amount of task allocated to the one or more execution units.

A data processing system comprising:

• a host processor to execute one or more applications;
• a data processing resource to perform processing jobs for the one or more applications;
• and
• a system controller to manage power consumption of the data processing resource,
• the data processing resource comprising:
• control circuitry to receive, from the host processor, a request for the data processor unit to perform a processing job;
• an iterator unit to process the request and generate a workload comprising one or more tasks for the requested processing job;
• one or more execution units to perform the one or more tasks, wherein the iterator unit is configured to allocate the one or more tasks to the one or more execution units based on control signals from the control circuitry,
• wherein, upon receiving a power down request from the system controller, the control circuitry is configured to switch an operation mode of at least one execution unit from a normal operation mode to a reduced operation mode by controlling the iterator unit to reduce an amount of task allocated to the at least one execution unit.

A method of operating a data processing resource to perform data processing tasks for a host processor, the data processing resource comprising:

• control circuitry to receive, from the host processor, a request for the data processor unit to perform a processing job;
• an iterator unit to process the request and generate a workload comprising one or more tasks for the requested processing job;
• one or more execution units to perform the one or more tasks, wherein the iterator unit is configured to allocate the one or more tasks to the one or more execution units based on control signals from the control circuitry,
• the method comprising:
• the control circuitry switching an operation mode of at least one execution unit from a normal operation mode to a reduced operation mode by controlling the iterator unit to reduce an amount of task allocated to the at least one execution unit.