Invalid Format Specifier for `print_memory_profiler_info()`

[fangjunzhou]

Describe the bug

ti.profiler.memory_profiler.print_memory_profiler_info() seems to be broken with RuntimeError: invalid format specifier error message.

To Reproduce

Run the following code:

import taichi.profiler as profiler

ti.init(arch=ti.cpu, debug=True)

profiler.print_memory_profiler_info()

Log/Screenshots

    def print_memory_profiler_info():
        """Memory profiling tool for LLVM backends with full sparse support.

        This profiler is automatically on.
        """
        get_runtime().materialize()
>       get_runtime().prog.print_memory_profiler_info()
E       RuntimeError: invalid format specifier

.venv/lib/python3.12/site-packages/taichi/profiler/memory_profiler.py:10: RuntimeError

[hughperkins]

works ok for me on python 3.10 on arm64 mac

[Taichi Build] Hughs-MacBook-Air:taichi hugh$ python ~/git/taichi-play/8663.py
[Taichi Build] Hughs-MacBook-Air:taichi hugh$

I wonder if it's related to python version? What happens if you use python 3.10?

[hughperkins]

Actually, I don't know what I was doing before, but I get the same error now 🤔 (Actually, I re-found this when googling the error 😅)

[NathanaelJ]

I also get this issue. Would love to find out a solution... My setup is:
[Taichi] version 1.7.3, llvm 15.0.4, commit 5ec301be, linux, python 3.10.12

The profiler prints some information before the error occurs:

[Memory Profiler]
SNode S0root    
SNode S1dense   
SNode S3root    
SNode S4dense   
SNode S8dense   
SNode S12dense  
SNode S16dense  
SNode S18root   
SNode S19dense  
SNode S84root   
SNode S85dense  
SNode S87root   
SNode S88dense  
SNode S92root   
SNode S93dense  
SNode S95root   
SNode S96dense  
SNode S100dense 
SNode S104root  
  active element list:╭─────────────────────────────── Traceback (most recent call last) ────────────────────────────────╮
...

I took a look at the function in taichi/runtime/llvm/llvm_runtime_executor.cpp and it looks like the issue could be the :n in lines 363 and 364. :n was deprecated in fmt verison 8.0 (and subsequently removed) and should be changed to :L

Seems like a relatively easy fix if anyone wants to actually give it a go?