Inquerying what leads to this error using memory profiler

[Yihao-Shi]

I have pre-defined a 81x81 Matrix field to store local stiffness matrix in MPM:

import taichi as ti
ti.init(arch=ti.gpu)
a=ti.Matrix.field(81, 81, float, 120)

I want to see the memory profile

ti.profiler.memory_profiler.print_memory_profiler_info()

however the following error is reported:
RuntimeError: [struct_llvm.cpp:run@266] Assertion failure: (int)snodes.size() <= taichi_max_num_snodes

Instead, when I use a = ti.field(float, shape=81*81*120), it works well
[Memory Profiler] SNode S0root SNode S1dense Total requested dynamic memory (excluding alignment padding): 3,145,904 B

I am wondering what leads to this problems, thanks.