Saturday, January 27, 2024

Mojo Vs Rust, Basic Test And Binary Perspective.

Hello, In first place I'm not going to do an algorithmic benchmark, just a simple loop + print test and some checks on the generated binaries.

The system is a Debian12 Linux and the architecture is: x86 64bits.



Rust

Mojo


Mojo don't allow .py extension it has to be .mojo so no default nvim highlighting ...


$ mojo build mojo_benchmark.mojo

$ time ./mojo_benchmark

...

real 0m0.342s

user 0m0.080s

sys 0m0.252s



$ rustc rust_benchmark.rs

$ time ./rust_benchmark

...

real 0m0.107s

user 0m0.012s

sys 0m0.049s


I noticed a speed increase using fish shell instead of bash but could be the environment variable stack overload.


So in this specific test rust is much faster. And also the compiler suggests using _ instead i, that mojo compiler doesn't.

The rust binary is bigger, but is because the allocator is embedded:

-rwxr-xr-x 1 sha0 sha0 1063352 Jan 10 08:55 mojo_benchmark

-rwxr-xr-x 1 sha0 sha0 4632872 Jan 10 08:57 rust_benchmark


But Look this, mojo uses libstdc++ and libc  and rust only uses libc.

$ ldd -d mojo_benchmark

linux-vdso.so.1 (0x00007ffd94917000)

libtinfo.so.6 => /lib/x86_64-linux-gnu/libtinfo.so.6 (0x00007fe899cb1000)

libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fe899a00000)

libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fe899921000)

libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fe899c91000)

libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fe899740000)

/lib64/ld-linux-x86-64.so.2 (0x00007fe899d2c000)


$ ldd -d rust_benchmark

linux-vdso.so.1 (0x00007ffde67b7000)

libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8b3881b000)

libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8b3863a000)

/lib64/ld-linux-x86-64.so.2 (0x00007f8b388ae000)



Lets check the binary.
All the python non used built-ins are written to the binary, so does rust in this case.

mojo

rust




Steps until libc write:

Mojo



Rust


Ok wait, rustc like cargo by default is on debug-mode which is the slower version, the way to do cargo --release which is much faster is  rustc -O rust_benchmark.rs

real 0m0.107s
user 0m0.005s
sys 0m0.056s


This simple program don't make profit of the optimizations.


Rust


We reduced from 30 calls to 27.
I'm not going to criticize the number of calls because rust does his magic and result faster.

Mojo only 7 calls but runtime seems slower.

Regarding memory operations, seems that is rust like compiler-time borrow checked.

https://docs.modular.com/mojo/programming-manual.html#behavior-of-destructors


Rust decompiled


Rust disassembled





Mojo decompiled





Mojo disassembled



So we have two things: the crafted assembly speed, and specially the runtime speed.

Looking the Rust assembly, it's writing the string pointer to stack on every iteration which is same pointer in every iteration.

However Mojo loop is more optimized, param and address to call are pre-calculated before the loop.


So Mojo is generating optimized code, but its c++ API seems slower, at least the print() 

Regards.


















Read more


  1. Best Pentesting Tools 2018
  2. Hacker Tools Software
  3. Pentest Tools Review
  4. Tools 4 Hack
  5. Wifi Hacker Tools For Windows
  6. Pentest Tools Website Vulnerability
  7. Nsa Hack Tools Download
  8. Best Hacking Tools 2020
  9. Hacker Tool Kit
  10. Top Pentest Tools
  11. New Hacker Tools
  12. Nsa Hack Tools Download
  13. Pentest Tools Download
  14. Pentest Tools Linux
  15. Underground Hacker Sites
  16. Hackrf Tools
  17. Hacking Tools And Software
  18. Game Hacking
  19. Hacking Tools Windows
  20. Pentest Tools Alternative
  21. Free Pentest Tools For Windows
  22. Hack Website Online Tool
  23. Hack Website Online Tool
  24. Pentest Automation Tools
  25. Pentest Tools Nmap
  26. Hacker Tools Hardware
  27. Hacking Tools Hardware
  28. Pentest Tools For Windows
  29. Pentest Tools Bluekeep
  30. Hacking Tools For Kali Linux
  31. Pentest Tools
  32. Hacker Tools Github
  33. Hacker Tools Free Download
  34. Hacker Tools Github
  35. New Hack Tools
  36. Blackhat Hacker Tools
  37. Easy Hack Tools
  38. Pentest Tools Subdomain
  39. Pentest Tools Online
  40. Pentest Box Tools Download
  41. Pentest Tools Apk
  42. Hacker Tools Github
  43. Hack Tools For Windows
  44. Pentest Tools Find Subdomains
  45. Pentest Tools List
  46. Pentest Tools For Mac
  47. Hack Tools For Mac
  48. Physical Pentest Tools
  49. Install Pentest Tools Ubuntu
  50. Pentest Tools Subdomain
  51. Pentest Tools For Android
  52. Hack Apps
  53. Nsa Hacker Tools
  54. Hacking Tools
  55. Growth Hacker Tools
  56. Hacking Tools 2020
  57. Black Hat Hacker Tools
  58. Hacker Tools For Mac
  59. Tools Used For Hacking
  60. Hak5 Tools
  61. Pentest Tools Review
  62. Hacker Tools Free
  63. How To Hack
  64. Pentest Tools Website
  65. Pentest Tools Website Vulnerability
  66. Pentest Tools List
  67. Pentest Tools Bluekeep

No comments:

Post a Comment