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Merge pull request #212352 from luismcmsft/patch-1
Update to reflect Vitis 2022.1
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articles/virtual-machines/field-programmable-gate-arrays-attestation.md

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The FPGA Attestation service performs a series of validations on a design checkpoint file (called a “netlist”) generated by the Xilinx toolset and produces a file that contains the validated image (called a “bitstream”) that can be loaded onto the Xilinx U250 FPGA card in an NP series VM.
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## News
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The current attestation service is using Vitis 2020.2 from Xilinx, on Jan 17th 2022, we’ll be moving to Vitis 2021.1, the change should be transparent to most users. Once your designs are “attested” using Vitis 2021.1, you should be moving to XRT2021.1. Xilinx will publish new marketplace images based on XRT 2021.1.
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Please note that current designs already attested on Vitis 2020.2, will work on the current deployment marketplace images as well as new images based on XRT2021.1
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The current attestation service is using Vitis 2021.1 from Xilinx, on Sept 26th 2022, we’ll be moving to Vitis 2022.1, the change should be transparent to most users. Once your designs are “attested” using Vitis 2022.1, you should be moving to XRT2022.1. Xilinx published new marketplace images based on XRT 2022.1.
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Please note that current designs already attested on Vitis 2020.2 or 2021.1, will work on the current deployment marketplace images as well as new images based on XRT2022.1
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As part of the move to 2021.1, Xilinx introduced a new DRC that might affect some designs previously working on Vitis 2020.2 regarding BUFCE_LEAF failing attestation, for more details here: [Xilinx AR 75980 UltraScale/UltraScale+ BRAM: CLOCK_DOMAIN = Common Mode skew checks](https://support.xilinx.com/s/article/75980?language=en_US).
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## Building your design for attestation
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The preferred Xilinx toolset for building designs is Vitis 2020.2. Netlist files that were created with an earlier version of the toolset and are still compatible with 2020.2 can be used. Make sure you have loaded the correct shell to build against. The currently supported version is `xilinx_u250_gen3x16_xdma_2_1_202010_1`. The support files can be downloaded from the Xilinx Alveo lounge.
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The preferred Xilinx toolset for building designs is Vitis 2022.1. Netlist files that were created with an earlier version of the toolset and are still compatible with 2022.1 can be used. Make sure you have loaded the correct shell to build against. The currently supported version is `xilinx_u250_gen3x16_xdma_2_1_202010_1`. The support files can be downloaded from the Xilinx Alveo lounge.
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You must include the following argument to Vitis (v++ cmd line) to build an `xclbin` file that contains a netlist instead of a bitstream.
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