Grasshopper is slow

Grasshopper
1

Hi all,

With grasshopper 1.0, computation is very slow and caching geometry is just a horror !

The difference is obvious with gh 0.9 (rh5)

Why ?

2

You probably want to attach a definition that illustrates the problem.

It would be good to attach the result of the Rhino 6 command _SystemInfo.

3
4

I can’t share a file, but just selecting the same items with gh 0.9(rhino 5) or gh 1.0 (rhino 6) doesn’t take the same time !

For my _SystemeInfo with rh6
Rhino 6 SR6 2018-6-26 (Rhino 6, 6.6.18177.16151, Git hash:master @ abeff9e9af62a0e02a9eb52efa77e179a682f2c7)
Licence type: Commerciale, version 2018-06-26
License details: Cloud Zoo. In use by: Blanc Aurelien (aurblanc)

Windows 7 SP1 (Physical RAM: 32Gb)
Machine name: HP-Z420

GeForce GTX 780/PCIe/SSE2 (OpenGL ver:4.5.0 NVIDIA 352.86)

OpenGL Settings
  Safe mode: Off
  Use accelerated hardware modes: On
  Redraw scene when viewports are exposed: On
  
  Anti-alias mode: 4x
  Mip Map Filtering: Linear
  Anisotropic Filtering Mode: Height
  
  Vendor Name: NVIDIA Corporation
  Render version: 4.5
  Shading Language: 4.50 NVIDIA
  Driver Date: 5-11-2015
  Driver Version: 9.18.13.5286
  Maximum Texture size: 16384 x 16384
  Z-Buffer depth: 24 bits
  Maximum Viewport size: 16384 x 16384
  Total Video Memory: 3 GB
5

You might want to try updating your GPU driver. There might be some speed improvements to be had with a recent driver for your GTX 780.

6

Okay, I’ll try that. Thanks for your time.
for your information the time difference is the same on other more recent PC

7

It’ll be hard to tell what the reason is without a way to reproduce.

If you have third-party plug-ins installed you could try disabling them, restart Rhino, then see if there is any improvement. If not, then really, a file that reproduces your problem would be very useful.