Setting Throughput Factor from the Hub Block - 2022.2 English

Vitis Model Composer User Guide (UG1483)

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2022.2 English

The Model Composer Hub block provides Throughput Factor to control the throughput of the generated code, or hardware design. The Throughput Factor specifies how many sample elements of the inputs are to be processed per clock cycle. By default, the Throughput Factor is set to 1. You can specify this factor by clicking on the HLS Setting tab of the Vitis Model Composer Hub block, as shown below:

Figure 1. Model Composer Hub - Throughput Factor

The Throughput Factor must be between 1 and 16. Specifying a value greater than 1 will create parallel logic to process the transactions, using more resources from the device, and increasing the HLS and Vivado Synthesis runtime.

Code generation for designs with Throughput Factor > 1 imposes additional restrictions on the design. In case these restrictions are not met, Model Composer will return an error trying to explain the violation.