Does this work on WSL2?

[MrObvious]

Hi. I got it working on my gen3 I7 build, but I was wondering if this works on WSL2?

pstejska@PSTEJSKA03-PC:/blacksmith-public/build$ sudo ./blacksmith --dimm-id 2 --runtime-limit 21600 --ranks 1 --sweeping
Writing into logfile stdout.log
pstejska@PSTEJSKA03-PC:/blacksmith-public/build$ sudo ./blacksmith --dimm-id 1 --runtime-limit 21600 --ranks 1 --sweeping

[+] General information about this fuzzing run:
Start timestamp:: 1637689072
Hostname: PSTEJSKA03-PC
Commit SHA: NO_REPOSITORY
Run time limit: 21600 (6 hours 0 minutes 0 seconds)
[+] Printing run configuration (GlobalDefines.hpp):
DRAMA_ROUNDS: 1000
CACHELINE_SIZE: 64
HAMMER_ROUNDS: 1000000
THRESH: 495
NUM_TARGETS: 10
MAX_ROWS: 30
NUM_BANKS: 16
DIMM: 1
CHANNEL: 1
MEM_SIZE: 1073741824
PAGE_SIZE: 4096

[+] Initializing memory with pseudorandom sequence.
[-] Could not find conflicting address sets. Is the number of banks (16) defined correctly?

[pjattke]

Hi @MrObvious
I am not sure if it would work on WSL as the hugetlb filesystem is currently only partially implemented, see Memory Management - hugetlbfs filesystem partially implemented #3796. As we don't have any Windows systems, we would appreciate if you could report back in case you have tried it. Thank you!

Regards,
Patrick

[MrObvious]

Ok good news WSL2 supports big pages (hugetlb). It was only partially implemented in WSL1. I just need to figure out how to get it to detect the RAM banks. I'm not sure of the command so can I please have some commands or things to check to get it working?

[pjattke]

If you are not running on a Coffee Lake machine (e.g., i7-8700K that we used), you will need to reverse-engineer the DRAM address functions. These are determined by the memory controller of the CPU, so I would assume that they are the same on the native host and WSL but we don't have experience with that.

Regarding reverse-engineering the DRAM address functions, please see the updated README:

NOTE: The DRAM address functions that are hard-coded in DRAMAddr.cpp assume an Intel Core i7-8700K. For any other microarchitecture, you will need to first reverse-engineer these functions (e.g., using DRAMA or TRResspass' DRAMA) and then update the matrices in this class accordingly.

Please follow this issue. I will soon add instructions there on how to pass the functions found by DRAMA to Blacksmith.

[pjattke]

Any updates on this, @MrObvious — could you make it work?