Pochung Chen

@yingjerkao OK. Let me try.

Question 1: Can one build gpu support without using CUTENSOR and CUQUANTUM?

With commit 46dc390f2d5809ed070424dd24da8f5aa8b6cdf0 I assume this is the current settings. If I do `cmake -DUSE_CUDA=ON`, it seems to automatically turns on the CUTENSOR/CUQUANTUM: ```` -- ------------------------------------------------------------------------ -- Project Cytnx, A...

I have to explicitly turn off the cutensor/cuquantum. ` cmake -DUSE_CUDA=ON -DUSE_CUTENSOR=OFF -DUSE_CUQUANTUM=OFF ..` ```` -- ------------------------------------------------------------------------ -- Project Cytnx, A Cross-section of Python & C++,Tensor network library -- ------------------------------------------------------------------------...

Hmm. I just find out that: If I do `cmake -DUSE_CUDA=ON ..` then it compiles OK. If I do `cmake -DUSE_CUDA=ON -DUSE_CUTENSOR=OFF -DUSE_CUQUANTUM=OFF ..`, I got following erros ```` [...

Because I fail to compile gpu support when I turn off cutensor/cuquantum. I am wondering, with the current code. * Can one compiles gpu support using cuda, but WITHOUT cutensor/cuquantum?...

This is to confirm that, after changing line 1099 to ```` std::shared_ptr root = this->CtTree.nodes_container.back(); ```` It compiles OK.

with commit 0be640dcb08dcfd4de8ed9a2f7da73dec7ddfaf2 and clang version: -- The CXX compiler identification is AppleClang 15.0.0.15000309 -- The C compiler identification is AppleClang 15.0.0.15000309 I still encounter this ```` [ 83%] Building...

Also. Apple's clang (Apple clang) is different from the typical clang. The behavior is different from the clang one installs on Mac via homebrew.......

## gcc-14, gcc-13 `pip install .` is successful if I use gcc-14 or gcc-13. But following warnings are observed (essential the same error message for gcc-14/13.) First, something about FindBoost...