International Business Machines Corporation

Amit Shay

Avraham Ayzenfeld

Giora Biran

Yair Fried

Yossi Shapira

Amir Turi

Yanai Danan

Gilad Merran

Oren Ben Gigi

Omri Rafaeli

A credit-based flow control system can utilize speculative credit. If an agent has not received a credit return from a downstream agent for a given period of time, the agent can return speculative credit to an upstream agent. This way, even if the agent is not currently capable of performing operations represented by the speculative credit, the upstream agent can be enabled to proceed with operations.

Data transmission flow control regime

In an approach to processor dependency-aware instruction execution, responsive to a new instruction being issued to an instruction issue queue in a processor, a future dependency count is incremented for each instruction of a plurality of instructions in the instruction issue queue that has a dependency on the new instruction. The plurality of instructions in the instruction issue queue are prioritized based on the future dependency count. The highest priority instruction of the plurality of instructions in the instruction issue queue is issued.

Processor dependency-aware instruction execution

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Kfar Saba, Israel

Amit Shay