Building Pytorch from source pytorch binaries

i am facing the problem
GeForce RTX 3090 with CUDA capability sm_86 is not compatible with the current PyTorch installation

" i also dont know about binaries and what is mean by " building Pytorch from source ? and what is other way to build pytorch which can work me and can solve this problem "

Double post from here with the answer.
Install the CUDA11 binaries using the install instructions from the website and your 3090 should work.