wjakob

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

wjakob

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wjakob

import sys
sys.path.append('/Users/wenzel/mitsuba/Mitsuba.app/python/3.3')
import mitsuba

from mitsuba.core import FileStream
from mitsuba.render import TriMesh

def bmesh_to_trimesh(name, mesh, materialID):
	faces = mesh.tessfaces[0].as_pointer()
	vertices = mesh.vertices[0].as_pointer()