Context Saving and Restoring for Multitasking in Reconfigurable Systems

Kalte H, Porrmann M (2005)
In: 15th International Conference on Field Programmable Logic and Applications. 223-228.

Conference Paper | Published | English

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Abstract
Today's Field Programmable Gate Arrays (FPGAs) can be reconfigured partially, which makes it possible to share resources between various functional modules (hardware tasks) over time. This concept is well known in the area of conventional operating systems. However, in order to transfer resource sharing concepts to operating systems on FPGAs, several underlying mechanisms have to be developed. One of these mechanisms is to suspend hardware tasks and restart them at another time and/or another area of the FPGA. Addressing this problem, this paper discusses ways to save and restore the state information of a hardware task. Afterwards, an implementation of a state relocation mechanisms is presented that uses the standard configuration port. In contrast to similar approaches, we significantly reduce the amount of readback data by reading only those configuration frames that contain state information. We finally determine the time overhead for task relocation, which is essential for most multitasking concepts, like defragmentation.
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Location
Tempere, Finland
Conference Date
August 24 - 28
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Kalte H, Porrmann M. Context Saving and Restoring for Multitasking in Reconfigurable Systems. In: 15th International Conference on Field Programmable Logic and Applications. 2005: 223-228.
Kalte, H., & Porrmann, M. (2005). Context Saving and Restoring for Multitasking in Reconfigurable Systems. 15th International Conference on Field Programmable Logic and Applications, 223-228.
Kalte, H., and Porrmann, M. (2005). “Context Saving and Restoring for Multitasking in Reconfigurable Systems” in 15th International Conference on Field Programmable Logic and Applications 223-228.
Kalte, H., & Porrmann, M., 2005. Context Saving and Restoring for Multitasking in Reconfigurable Systems. In 15th International Conference on Field Programmable Logic and Applications. pp. 223-228.
H. Kalte and M. Porrmann, “Context Saving and Restoring for Multitasking in Reconfigurable Systems”, 15th International Conference on Field Programmable Logic and Applications, 2005, pp.223-228.
Kalte, H., Porrmann, M.: Context Saving and Restoring for Multitasking in Reconfigurable Systems. 15th International Conference on Field Programmable Logic and Applications. p. 223-228. (2005).
Kalte, Heiko, and Porrmann, Mario. “Context Saving and Restoring for Multitasking in Reconfigurable Systems”. 15th International Conference on Field Programmable Logic and Applications. 2005. 223-228.
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