Intel Rank Margin Tool Error on Tigerlake UP3

fosterlux — Wed, 01 Apr 2026 15:09:14 GMT

While running the Rank Margin Tool on a Tigerlake UP3 system I get the following error:

Shell> fs0:
FS0:\> cd fs0:\chipsec
FS0:\chipsec\> python RMT_Extractor.py
Total TestCycles...
3
Current Execution Cycle...
1
Extracting BDAT
Bdat extracted successfully...
not memhal
Unable to import memory HAL
Error reading the BDAT header
Traceback (most recent call last):
File "RMT_Extractor.py", line 201, in <module>
main()
File "RMT_Extractor.py", line 169, in main
extract_BDAT_DATA(BDAT_address,"BDAT_buffer.bin")
File "RMT_Extractor.py", line 81, in extract_BDAT_DATA
BDAT_size=unpack_from("I", BDAT_head,-4)[0]
UnboundLocalError: local variable 'BDAT_head' referenced before assignment
FS0:\chipsec\> if EXIST fs0:\results\end.txt then
FS0:\chipsec\> reset -c

I have configured the BIOS settings as indicated in the setup guide. Is this tool supported on this platform? I have run into other issues where I cannot configure overclocking or timing settings on this platform because they are not supported.

Re: Intel Rank Margin Tool Error on Tigerlake UP3

fosterlux — Wed, 01 Apr 2026 15:11:01 GMT

Additional information: after this failure, the size of the bdat.dat seems to be very small:

[root@SDX6330 ~]# ls -la x
drwxr-x--- 7 root root 16384 Jan 1 1970 .
drwxr-x--- 4 root root 1024 Jan 1 01:22 ..
drwxr-x--- 6 root root 16384 Jan 1 01:36 EFI
drwxr-x--- 2 root root 16384 Nov 25 16:25 System Volume Information
-rwxr-x--- 1 root root 48 Jan 1 00:33 bdat.dat
drwxr-x--- 14 root root 16384 Jan 1 00:33 chipsec
drwxr-x--- 17 root root 16384 Mar 26 2026 old
drwxr-x--- 2 root root 16384 Mar 23 2026 results
-rwxr-x--- 1 root root 324 Oct 27 2023 startup.nsh
-rwxr-x--- 1 root root 42 Mar 25 2026 userInput.json

topic Intel Rank Margin Tool Error on Tigerlake UP3 in Software Tuning, Performance Optimization & Platform Monitoring

Intel Rank Margin Tool Error on Tigerlake UP3

Re: Intel Rank Margin Tool Error on Tigerlake UP3