Task (computing)

About: Task (computing) is a research topic. Over the lifetime, 9718 publications have been published within this topic receiving 129364 citations.

Calculating exact worst case response times for static priority scheduled tasks with offsets and jitter

Abstract: A method to perform exact worst case response time analysis for fixed priority tasks with offsets and release jitter is described. Available methods are either pessimistic or inefficient as they incorporate numerous time consuming schedule simulations in order to find the exact response times of tasks. The method presented here is based on the creation of the worst case conditions for the execution of each individual task instance within a hyperperiod. The worst case is built by choosing release jitter of higher priority tasks appropriately. Given these conditions, the corresponding task instance response time is calculated using partly iterative algorithms. Experiments comparing the efficiency of the proposed method to an alternative exact method based on schedule simulation show that the new method outperforms the latter. The analysis is expected to be particularly useful when analysing response times and schedulability of tasks that form transactions in distributed systems.

Performance adaptive video encoding with concurrent decoding

Abstract: An encoder circuit, a task scheduler circuit and a decoder circuit. The encoder circuit may be configured to (i) generate one or more first status signals in response to one or more report signals and (ii) perform video encoding tasks based on available central processing unit (CPU) cycles and memory bandwidth. The task scheduler circuit may be configured to (i) generate a control signal and the one or more report signals in response to the one or more first status signals. The decoder circuit may be configured to (i) generate one or more second status signals and (ii) perform concurrent decoding while the encoder circuit performs adaptive video encoding tasks in response to the control signal.

Configuration and unconfiguration of distributed computing environment components

Abstract: Methods of configuring and unconfiguring resources in and from a distributed computing environment are effected by identifying those configuration/unconfiguration tasks which must be carried out locally (that is, on the resource being configured/unconfigured) and then enforcing the cell administrator's preexisting restriction on root user access to the machine at least with respect to the identified local configuration/unconfiguration task.

Automatic maintenance of configuration information in a replaceable electronic module

Abstract: The present invention provides methods and systems to automatically manage hardware and software capabilities of replaceable electronic modules as the modules are replaced or reassigned to different tasks. Each such module stores configuration information in a persistent memory. This configuration information enables the module to use only selected hardware and to execute only selected software. A replaceable electronic module manager stores copies of each module's configure information in a separate persistent memory. When a module is replaced, a copy of the configuration information is fetched from the module manager's persistent memory and sent to a replacement module, thereby making the replacement module functionally equivalent (from a point of view of which hardware can be used by the module or which software can be executed by the module) to the replaced module. In addition, when a module is assigned to a different task, appropriate configuration information can be sent to the module, so the module can appropriately perform the assigned task, such as use selected hardware or execute selected software.