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Altera_Forum's avatar
Altera_Forum
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20 years ago

Nios II and Hardware/Software co-simulation

Hello, I am interested in comparing the performance of the Nios II processor, with and without a custom instruction that I have developed, when running some benchmarking software algorithms. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Modelsim provides 100% accurate results for the processor performance. If you are interested in measuring performance with and without custom instructions this should suffice. Notice that I didn't say you have 100% accurate system performance since the DRAM models included with the kit are not cycle-accurate. This only affects your performance if your program has a high DRAM bandwidth.

If you are using Nios II IDE, make sure you check the box on the system libraries project page to compile for modelsim.