New question #294845 on Yade:
https://answers.launchpad.net/yade/+question/294845
When I start
yade-1.07.0 -j4 --performance four cores are working, but when I start my
script it works only on one thread.
################################
################################
################################
# FUNCTIONAL COMPONENTS
# simulation loop -- see presentation for the explanation
O.engines=[
PyRunner(command='SaveData()',virtPeriod=1./1000),
ForceResetter(),
VppNeighbours(),
VppPressureForce(),
PyRunner(command='ChangeMask()',iterPeriod=1),
PyRunner(command='ChangePos()',iterPeriod=1),
PyRunner(command='ChangePosFoil()',iterPeriod=1),
PyRunner(command='PreChangePos()',iterPeriod=1),
PyRunner(command='PressureOn()',iterPeriod=1),
PyRunner(command='PressureTimeOn()',iterPeriod=1),
InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor=1),Bo1_Wall_Aabb(),Bo1_Facet_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.2),
Ig2_Wall_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom6D()],
[Ip2_FrictMat_FrictMat_FrictPhys(),
Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=False,setCohesionOnNewContacts=False),
VppIp2_VppCohFrictMat_VppCohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=False),
VppIp2_CohFrictMat_VppCohFrictMat_CohFrictPhys(setCohesionNow=False,setCohesionOnNewContacts=False)#,
#VppPressure_VppCohFrictMat_VppCohFrictMat()
],
[Law2_ScGeom_FrictPhys_CundallStrack(),
VppLaw2_ScGeom6D_CohFrictPhys_CohesionMoment(
useIncrementalForm=False, #useIncrementalForm is turned
on as we want plasticity on the contact moments
always_use_moment_law=True, #if we want "rolling"
friction even if the contact is not cohesive (or cohesion is broken), we will
have to turn this true somewhere
shearBreaksCohesion = False,
label='cohesiveLaw')]
),
# apply gravity force to particles
GravityEngine(gravity=(0,0,-9.81)),
# damping: numerical dissipation of energy
NewtonIntegrator(damping=0.2)
]
# set timestep to a fraction of the critical timestep
# the fraction is very small, so that the simulation is not too fast
# and the motion can be observed
O.dt=utils.PWaveTimeStep()
# save the simulation, so that it can be reloaded later, for experimentation
O.saveTmp()
yade.qt.Controller(), yade.qt.View();
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