For users on the cutting edge, this version added specific "ease-of-use" enhancements:
Even after fixing the date bug, Vivado 2020.2 users frequently face compilation halts due to outdated environment variables or missing licensing configurations. The Node-Locked License Fix
# Previously failed if netlist used mixed case read_edif ./third_party/MyMixedCaseNetlist.edf # Now correctly maps to Xilinx primitives link_design -top top -part xczu9eg-ffvb1156-2-e
Below is a detailed post covering the key fixes, known issues, and workarounds for Vivado 2020.2. 1. The Key Fix: Vivado 2020.2.1 Update
: Significant improvements were made to simulation support, including shift operators (rol, ror, sll), mixing array/scalar logical operators, and conditional sequential assignments. Architectural Shift: Vitis HLS xilinx vivado 20202 fixed
For users of Vivado HLS (integrated into the Vivado 2020.2 environment), the transition from algorithmic C/C++ simulation to hardware implementation is streamlined through the ap_fixed library. This library allows designers to define arbitrary precision types directly in C++.
| Item | Requirement | |---|---| | OS (Windows) | Win10 64-bit, Win Server 2016/2019 | | OS (Linux) | RHEL 7.4+, CentOS 7.4+, Ubuntu 18.04.4 LTS | | RAM | 16 GB (32+ GB for large FPGAs) | | Storage | 60–120 GB (full installation) | | CPU | Multi-core Intel Xeon or AMD Ryzen/EPYC |
While there isn't a single "famous" short story about Vivado 2020.2
Vivado 2020.2 was built for older OS versions like Ubuntu 18.04 / 20.04 and Windows 10 (versions up to 20H2). Running it on newer distributions requires specific workarounds. Ubuntu 22.04 / 24.04 LTS Fixes For users on the cutting edge, this version
The several HLS-specific issues:
The 2020.2.2 update, released to address early-adopter issues, focused heavily on device support and improving the efficiency of the implementation tools. 1. New Device Support (Production & CIV)
On Red Hat Enterprise Linux 8 and CentOS 8, the Vivado IDE would have a 2-5 second lag when opening the IP Catalog or the TCL Console. This was traced to bad interaction with the GTK3 theme engine.
Instead of lightning-fast builds, they encountered a nightmare: the software crashed constantly during phys_opt_design The Key Fix: Vivado 2020
: Temporarily collapse display layouts to a single primary monitor before launching Vivado. Once initialized, drag the window to the preferred display canvas and save the window layout workspace profile. Source Control and Directory Management Fixes
If you are struggling to meet timing on Versal or UltraScale devices.
Xilinx Vivado 2020.2 represents a significant evolutionary step in the design suite, primarily focusing on foundational architectural changes and critical bug fixes from the previous 2020.1 release