Is the timing model for Intel® Stratix® 10 1SX040, 1ST040, and 1SG040 devices correct?

No, due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.2 and earlier, the timing model for Intel® Stratix® 10 1SX040, 1ST040 and 1SG040 devices is not correct. This occurs because the timing model for vertical (C2/C3/C4/C16) routing wires are miscalculated. Errors range from few ps to 50 ps per path, with 150 ps in the worst corner for the worst wire. This problem only affects Intel® Stratix® 10 1SX040 (GX/SX H-Tile) / 1SG040 (TX E-Tile) devices.

To work around this problem for projects using devices 1ST040xxxx (TX E-Tile), download and install the patch according to the versions of your Intel® Quartus® Prime Software.

Patch 0.60 for Intel Quartus Prime Pro Edition Software v20.1:

• Intel® Quartus® Prime Pro Edition Software v20.1 Solution Patch 0.60 for Windows (.exe)
• Intel® Quartus® Prime Pro Edition Software v20.1 Solution Patch 0.60 for Linux (.run)
• Readme for Intel® Quartus® Prime Pro Edition Software v20.1 Solution Patch 0.60 (.txt)

Patch 0.57 for Intel Quartus Prime Pro Edition Software v20.2:

• Intel® Quartus® Prime Pro Edition Software v20.2 Solution Patch 0.57 for Windows (.exe)
• Intel® Quartus® Prime Pro Edition Software v20.2 Solution Patch 0.57 for Linux (.run)
• Readme for Intel® Quartus® Prime Pro Edition Software v20.2 Solution Patch 0.57 (.txt)

Patch 0.74 for Intel Quartus Prime Pro Edition Software v20.3:

• Intel® Quartus® Prime Pro Edition Software v20.3 Solution Patch 0.74 for Windows (.exe)
• Intel® Quartus® Prime Pro Edition Software v20.3 Solution Patch 0.74 for Linux (.run)
• Readme for Intel® Quartus® Prime Pro Edition Software v20.3 Solution Patch 0.74 (.txt)

Patch 0.43 for Intel Quartus Prime Pro Edition Software v20.4:

• Intel® Quartus® Prime Pro Edition Software v20.4 Solution Patch 0.43 for Windows (.exe)
• Intel® Quartus® Prime Pro Edition Software v20.4 Solution Patch 0.43 for Linux (.run)
• Readme for Intel® Quartus® Prime Pro Edition Software v20.4 Solution Patch 0.43 (.txt)

To work around this problem for projects using devices 1ST040xxxx (TX E-Tile) or 1SX040xxx (GX/SX H-Tile), download and install the patch according to the versions of your Intel® Quartus® Prime Software.

Patch 0.50  for Intel Quartus Prime Pro Edition Software v21.1:

• Intel® Quartus® Prime Pro Edition software version 21.1 Solution Patch 0.50 for Windows (.exe)
• Intel® Quartus® Prime Pro Edition software version 21.1 Solution Patch 0.50 for Linux (.run)
• Readme for Intel® Quartus® Prime Pro Edition software version 21.1 Solution Patch 0.50 (.txt)

Patch 0.30 for Intel Quartus Prime Pro Edition Software v21.2:

• Intel® Quartus® Prime Pro Edition Software v21.2 Solution Patch 0.30 for Windows (.exe)
• Intel® Quartus® Prime Pro Edition Software v21.2 Solution Patch 0.30 for Linux (.run)
• Readme for Intel® Quartus® Prime Pro Edition Software v21.2 Solution Patch 0.30 (.txt)

Once the patch is installed, perform the following actions:

1. Save <design>.sta.rpt before running.
2. Run quartus_sta –force_dat <project> in the command line.
3. Recompile the design if there are any negative slacks.

This problem only affects the timing model for the devices listed. The other Intel® Stratix® 10 devices are not affected.

This problem is fixed beginning with version 21.3 of the Intel® Quartus® Prime Pro Edition Software.