Nvidia: increase ram usage

Hi, I am new here, and I have a question about ram usage. I can not make my 3070 to use all of its ram.

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 455.45.01    Driver Version: 455.45.01    CUDA Version: 11.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  GeForce RTX 3070    On   | 00000000:01:00.0 Off |                  N/A |
| 50%   54C    P2   129W / 130W |   4429MiB /  7982MiB |    100%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      1852      G   /usr/lib/xorg/Xorg                  6MiB |
|    0   N/A  N/A      2352      C   t-rex                            4419MiB |
+-----------------------------------------------------------------------------+

Is there any way to increase it, or is it normal?

Thank you