RCareWorld examples very slow

[tomsilver]

We are trying to figure out why RCareWorld 1.5 examples are running very slowly on my computer. Strangely, the same examples run fine on a colleague's computer with identical specs (@pranavnnt ).

The issue seems to be related to CPU usage. For example, running htop with python test_scene.py shows that each of the ~16 RCareWorld processes is using about 75% of CPU for me. This is not true for @pranavnnt .

System Info

I'm running Ubuntu 20.04 on a partitioned Windows computer. Here is detailed info:

$ inxi --full
System:    Host: tom-Legion-T7-34IRZ8 Kernel: 5.15.0-117-generic x86_64 bits: 64 Desktop: Gnome 3.36.9 
           Distro: Ubuntu 20.04.6 LTS (Focal Fossa) 
Machine:   Type: Desktop System: LENOVO product: 90V6000AUS v: Legion T7 34IRZ8 serial: <superuser/root required> 
           Mobo: LENOVO model: 376A v: SDK0T76461 WIN 3422116173577 serial: <superuser/root required> UEFI: LENOVO v: O5UKT21A 
           date: 07/27/2023 
CPU:       Topology: 12-Core model: 13th Gen Intel Core i7-13700KF bits: 64 type: MT MCP L2 cache: 30.0 MiB 
           Speed: 1455 MHz min/max: 800/5300 MHz Core speeds (MHz): 1: 1419 2: 1500 3: 801 4: 1120 5: 1421 6: 920 7: 800 
           8: 1128 9: 800 10: 1519 11: 1422 12: 1025 13: 1133 14: 1023 15: 1049 16: 1019 17: 1224 18: 805 19: 1138 20: 2027 
           21: 977 22: 1073 23: 2696 24: 1099 
Graphics:  Device-1: NVIDIA driver: N/A 
           Display: x11 server: X.Org 1.20.13 driver: fbdev,nouveau unloaded: modesetting,vesa resolution: 3840x2160~88Hz 
           OpenGL: renderer: llvmpipe (LLVM 12.0.0 256 bits) v: 4.5 Mesa 21.2.6 
Audio:     Device-1: Intel driver: snd_hda_intel 
           Device-2: NVIDIA driver: snd_hda_intel 
           Sound Server: ALSA v: k5.15.0-117-generic 
Network:   Device-1: Intel driver: iwlwifi 
           IF: wlo1 state: up mac: e4:60:17:78:e8:21 
           Device-2: Realtek RTL8125 2.5GbE driver: r8169 
           IF: enp2s0 state: down mac: 88:ae:dd:70:b0:13 
           IF-ID-1: docker0 state: down mac: 02:42:29:4e:db:b4 
Drives:    Local Storage: total: 953.87 GiB used: 46.36 GiB (4.9%) 
           ID-1: /dev/nvme0n1 vendor: Samsung model: MZVL21T0HCLR-00BL7 size: 953.87 GiB 
Partition: ID-1: / size: 479.55 GiB used: 46.32 GiB (9.7%) fs: ext4 dev: /dev/nvme0n1p5 
Sensors:   System Temperatures: cpu: 28.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 487 Uptime: 1h 24m Memory: 31.04 GiB used: 3.80 GiB (12.2%) Shell: bash inxi: 3.0.38 

Things Tried

• Restarting the computer and closing out all other processes
• Trying bathing / dressing / test scenes (all are slow)
• @alkdischen tried a number of other things

[tomsilver]

Tracked down the difference: I didn't have a GPU, and my colleagues do! After installing GPU drivers, I get the same performance as them.