Source code for paraview.benchmark.manyspheres

import datetime as dt
from paraview import servermanager
from paraview.simple import *
#from paraview.benchmark import *
import logbase, logparser

logbase.maximize_logs()
records = []
n0 = dt.datetime.now()

[docs]def get_render_view(size): '''Similar to GetRenderView except if a new view is created, it's created with the specified size instead of having t resize afterwards ''' view = active_objects.view if not view: # it's possible that there's no active view, but a render view exists. # If so, locate that and return it (before trying to create a new one). view = servermanager.GetRenderView() if not view: view = CreateRenderView(ViewSize=size) return view
[docs]def save_render_buffer(fname): '''Similar to SaveScreenshot except a re-render will not be triggered''' import vtk w = GetRenderView().SMProxy.GetRenderWindow() w2i = vtk.vtkWindowToImageFilter() w2i.ReadFrontBufferOff() w2i.ShouldRerenderOff() w2i.SetInput(w) w2i.Modified() tiff = TIFFWriter() tiff.Input = w2i.GetOutput() tiff.FileName = fname tiff.UpdatePipeline()
[docs]def flush_render_buffer(): '''When running as a single process use the WindowToImage filter to force a framebuffer read. This bypasses driver optimizations that perform lazy rendering and allows you to get actual frame rates for a single process with a GPU. Multi-process doesn't need this since compositing forces the frame buffer read. ''' # If we're not using off-screen rendering then we can bypass this since # the frame buffer display will force a GL flush w = GetRenderView().SMProxy.GetRenderWindow() if not w.GetOffScreenRendering(): return import vtk # If we're using MPI we can also bypass this since compositing will # for a GL flush controller = vtk.vtkMultiProcessController.GetGlobalController() if controller.GetNumberOfProcesses() > 1: return # Force a GL flush by retrieving the frame buffer image w2i = vtk.vtkWindowToImageFilter() w2i.ReadFrontBufferOff() w2i.ShouldRerenderOff() w2i.SetInput(w) w2i.Modified() w2i.Update()
[docs]def memtime_stamp(): global records global n0 m = logbase.get_memuse() n1 = dt.datetime.now() et = n1 - n0 print (et, m) n0 = n1 records.append([et, m])
[docs]def run(output_basename='log', num_spheres=8, num_spheres_in_scene=None, resolution=725, view_size=(1920, 1080), num_frames=10, save_logs=True, color=False, OSPRay=False): if num_spheres_in_scene is None: num_spheres_in_scene = num_spheres import vtk controller = vtk.vtkMultiProcessController.GetGlobalController() view = get_render_view(view_size) if OSPRay: view.EnableOSPRay = 1 import math edge = math.ceil(math.pow(num_spheres_in_scene, (1.0 / 3.0))) box = Box() box.XLength = edge box.YLength = edge box.ZLength = edge box.Center = [edge * 0.5, edge * 0.5, edge * 0.5] boxDisplay = Show() boxDisplay.SetRepresentationType('Outline') gen = ProgrammableSource(Script=''' import math import vtk try: num_spheres except: num_spheres = 8 try: num_spheres_in_scene except: num_spheres_in_scene = num_spheres try: res except: res = 725 edge = math.ceil(math.pow(num_spheres_in_scene, (1.0 / 3.0))) controller = vtk.vtkMultiProcessController.GetGlobalController() np = controller.GetNumberOfProcesses() p = controller.GetLocalProcessId() ns=lambda p:num_spheres/np + (1 if p >= np-num_spheres%np else 0) start=int(sum([ns(P) for P in range(0,p)])) end=start+ns(p) ss = vtk.vtkSphereSource() ss.SetPhiResolution(res) ss.SetThetaResolution(res) ap = vtk.vtkAppendPolyData() print ('source',p,': generating',end - start,'spheres from',start,'to',end) for x in range(start,end): i = x%edge j = math.floor((x / edge))%edge k = math.floor((x / (edge * edge))) ss.SetCenter(i + 0.5,j + 0.5,k + 0.5) ss.Update() pd = vtk.vtkPolyData() pd.ShallowCopy(ss.GetOutput()) # pd.GetPointData().RemoveArray('Normals') ap.AddInputData(pd) ap.Update() self.GetOutput().ShallowCopy(ap.GetOutput()) ''') paramprop = gen.GetProperty('Parameters') paramprop.SetElement(0, 'num_spheres_in_scene') paramprop.SetElement(1, str(num_spheres_in_scene)) paramprop.SetElement(2, 'num_spheres') paramprop.SetElement(3, str(num_spheres)) paramprop.SetElement(4, 'res') paramprop.SetElement(5, str(resolution)) gen.UpdateProperty('Parameters') genDisplay = Show() genDisplay.SetRepresentationType('Surface') if color: pidScale = ProcessIdScalars() pidScaleDisplay = Show() deltaAz = 45.0 / num_frames deltaEl = 45.0 / num_frames Render() # Use a dummy camera to workaround MPI bugs when directly interacting with # the view's camera c = vtk.vtkCamera() c.SetPosition(view.CameraPosition) c.SetFocalPoint(view.CameraFocalPoint) c.SetViewUp(view.CameraViewUp) c.SetViewAngle(view.CameraViewAngle) c.Azimuth(22.5) c.Elevation(22.5) view.CameraPosition = c.GetPosition() view.CameraFocalPoint = c.GetFocalPoint() view.CameraViewUp = c.GetViewUp() view.CameraViewAngle = c.GetViewAngle() fdigits = int(math.ceil(math.log(num_frames, 10))) frame_fname_fmt = output_basename + '.scene.f%(f)0' + str(fdigits) + 'd.tiff' SaveScreenshot(frame_fname_fmt % {'f': 0}) vtk.vtkTimerLog.MarkStartEvent('GetViewItemStats') num_polys = sum([r.GetRepresentedDataInformation().GetNumberOfCells() for r in view.Representations]) num_points = sum([r.GetRepresentedDataInformation().GetNumberOfPoints() for r in view.Representations]) vtk.vtkTimerLog.MarkEndEvent('GetViewItemStats') memtime_stamp() fpsT0 = dt.datetime.now() for frame in range(1, num_frames): c.Azimuth(deltaAz) c.Elevation(deltaEl) view.CameraPosition = c.GetPosition() view.CameraFocalPoint = c.GetFocalPoint() view.CameraViewUp = c.GetViewUp() view.CameraViewAngle = c.GetViewAngle() Render() flush_render_buffer() memtime_stamp() fpsT1 = dt.datetime.now() if controller.GetLocalProcessId() == 0: if save_logs: # Save the arguments this was executed with with open(output_basename + '.args.txt', 'w') as argfile: argfile.write(str({ 'output_basename': output_basename, 'num_spheres': num_spheres, 'num_spheres_in_scene': num_spheres_in_scene, 'resolution': resolution, 'view_size': view_size, 'num_frames': num_frames, 'save_logs': save_logs, 'color': color})) # Save the memory statistics collected with open(output_basename + '.mem.txt', 'w') as ofile: ofile.write('\n'.join([str(x) for x in records])) # Process frame timing statistics logparser.summarize_results(num_frames, (fpsT1-fpsT0).total_seconds(), num_polys, 'Polys', save_logs, output_basename) print ('Points / Frame: %(np)d' % {'np': num_points})
[docs]def main(argv): import argparse parser = argparse.ArgumentParser( description='Benchmark ParaView geometry rendering') parser.add_argument('-o', '--output-basename', default='log', type=str, help='Basename to use for generated output files') parser.add_argument('-s', '--spheres', default=100, type=int, help='The total number of spheres to render') parser.add_argument('-n', '--spheres-in-scene', type=int, help='The number of spheres in the entire scene, including those not rendered.') parser.add_argument('-r', '--resolution', default=4, type=int, help='Theta and Phi resolution to use for the spheres') parser.add_argument('-v', '--view-size', default=[400, 400], type=lambda s: [int(x) for x in s.split(',')], help='View size used to render') parser.add_argument('-f', '--frames', default=10, type=int, help='Number of frames') parser.add_argument('-c', '--color', action='store_true', help='Enable color renderings') parser.add_argument('-y', '--OSPRay', action='store_true', help='Use OSPRAY to render') args = parser.parse_args(argv) options = servermanager.vtkProcessModule.GetProcessModule().GetOptions() url = options.GetServerURL() if url: import re m = re.match('([^:/]*://)?([^:]*)(:([0-9]+))?', url) if m.group(4): Connect(m.group(2), m.group(4)) else: Connect(m.group(2)) run(output_basename=args.output_basename, num_spheres=args.spheres, num_spheres_in_scene=args.spheres_in_scene, resolution=args.resolution, view_size=args.view_size, num_frames=args.frames, color=args.color, OSPRay=args.OSPRay)
if __name__ == "__main__": import sys main(sys.argv[1:])