Fault resilient/fault tolerant computing
First Claim
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1. A fault tolerant/fault resilient computer system, comprising:
- at least two compute elements; and
at least one controller connected to the at least two compute elements;
wherein;
each of the compute elements has clocks that operate asynchronously to clocks of the other compute elements, the compute elements operate in a first mode in which the compute elements each execute a first stream of instructions in emulated clock lockstep, and the compute elements operate in a second mode in which the compute elements each execute a second stream of instructions in instruction lockstep.
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Abstract
A fault tolerant/fault resilient computer system includes at least two compute elements connected to at least one controller. Each compute element has clocks that operate asynchronously to clocks of the other compute elements. The compute elements operate in a first mode in which the compute elements each execute a first stream of instructions in emulated clock lockstep, and in a second mode in which the compute elements each execute a second stream of instructions in instruction lockstep. Each compute element may be a multi-processor compute element.
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Citations
35 Claims
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1. A fault tolerant/fault resilient computer system, comprising:
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at least two compute elements; and
at least one controller connected to the at least two compute elements;
wherein;
each of the compute elements has clocks that operate asynchronously to clocks of the other compute elements, the compute elements operate in a first mode in which the compute elements each execute a first stream of instructions in emulated clock lockstep, and the compute elements operate in a second mode in which the compute elements each execute a second stream of instructions in instruction lockstep. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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25. A method of operating a fault tolerant/fault resilient computer system having at least two compute elements connected to at least one controller and having clocks that operate asynchronously to clocks of the other compute elements, the method comprising:
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operating the compute elements in a first mode in which the compute elements each execute a first stream of instructions in emulated clock lockstep, and operating the compute elements in a second mode in which the compute elements each execute a second stream of instructions in instruction lockstep.
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Specification