Guidelines for Evaluating BSP Resource Utilization Efficiency
The higher the resource utilization percentage, the better the area utilization in the static area of your BSP. A high resource utilization percentage also implies that more resources are available for the kernel region.
Follow the steps below to calculate the resource utilization percentage of your BSP:
- Obtain values for all resources in the FPGA from the top.fit.rpt or base.fit.rpt available under the Partition Statistics section of the Fitter report.
- Deduct the value for "freeze_wrapper_inst|kernel_system_inst" (kernel region).
Tip: Focus more on the values of adaptive logic module (ALM) than on the values of other resources. Ensure that the resource utilization percentage for ALM is closer to the OpenCL reference BSP. A very high percentage for ALM might lead to congestion, which can increase the compilation time and introduce routing congestions in complex kernels. However, you can always increase or decrease the static region area, and observe the compilation time and fmax.
The following table reflects the OpenCL BSP resource utilization of Arria® 10 GX devices in the 17.0 release.
| Total Available | Reserved for Kernel | Available for BSP | Used by BSP | % | |
| ALM | 427200 | 393800 | 33400 | 23817.5 | 71.31% |
| Registers | 1708800 | 1575200 | 133600 | 38913 | 29.13% |
| M20K | 2713 | 2534 | 179 | 134 | 74.86% |
| DSP | 1518 | 1518 | 0 | 0 | N/A |
Observe that the floorplanning is executed in such a way that the static region will not have any DSP blocks.