Multi-thread synthesis method and synthesis system for fpga development

Abstract

The invention relates to a multi-thread synthesis method and an integrated system developed by FPGA. In the multi-thread synthesis method, at least one process is set as a multi-thread process, which can improve processor utilization and shorten the synthesis time compared with a single-thread process. And, for any one of the multi-threaded processes, the operation results corresponding to each of the threads are written back to the netlist in a specified order that has nothing to do with the chronological order in which each thread ends, which helps to avoid errors due to the different order of writing back the netlist. The resulting instability of the output results makes the results of multiple runs in different environments the same, which can improve the stability of the output results. When the synthesis system performs logic synthesis of the FPGA module, the above-mentioned multi-thread synthesis method is used to improve system stability.

Description

technical field [0001] The invention relates to the field of EDA tool development, in particular to a multi-thread synthesis method and a synthesis system for FPGA development. Background technique [0002] EDA (Electronics Design Automation, electronic design automation) is the use of computer-aided design (CAD) to complete the functional design, synthesis, verification, physical design (including layout, wiring, layout, design rule checking, etc.) of VLSI chips. ) and other process design methods. In the electronics industry, due to the increasing scale of the semiconductor industry, EDA plays an increasingly important role, and EDA tools are also used in the development of various circuits. [0003] In EDA tools, synthesis tools are used to convert modules written in hardware description languages ​​(such as Verilog HDL) into netlists (Netlist, or netlist files, connection lists), and the synthesis process can also be considered as netlist conversion. process. Using th...

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Problems solved by technology

For the single-thread synthesis method, only one thread is executed at the same time. After the current thread ends, the running result is first written back to the netlist, and then the system assigns the task of the next thread. This method makes the utilization of the processor (CPU) The rate is very low. When the user design is relatively large, the synthesis process takes a long time

However, in the existing environment, if multiple concurrent threads are set to execute tasks in parallel, each thread will automatically write the running results back to the netlist after the end of each thread, and the output netlist will often be run after multiple synthesis processes. The results are often different, that is, multiple There is uncertainty in thread operation

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