コード例 #1
0
ファイル: nbody.py プロジェクト: KapilRijhwani/corepy
def cal_nb_generate_local(n_bodies, dt, steps):
  code = env.InstructionStream()
  cal.set_active_code(code)
  fn_bodies = float(n_bodies)
  steps = float(steps)

  r_count = code.acquire_register()
  r_step = code.acquire_register()
  r_lpos = code.acquire_register()
  r_rpos = code.acquire_register()
  r_force = code.acquire_register()
  r_diff = code.acquire_register()
  r_dist_vec = code.acquire_register()
  r_dist = code.acquire_register()
  r_force_tmp = code.acquire_register()
  r_force_vec = code.acquire_register()
  r_vel = code.acquire_register()

  print "fn_bodies", fn_bodies

  code.add("dcl_input_position_interp(linear_noperspective) v0.xy__")
  #cal.dcl_input(reg.v0.x___, USAGE=cal.usage.pos, INTERP=cal.interp.linear_noperspective)
  r_numsteps = code.acquire_register((steps,) * 4)
  r_bodies = code.acquire_register((fn_bodies,) * 4)
  #r_bodiesquare = code.acquire_register((float(fn_bodies**2),) * 4)
  r_G = code.acquire_register((G,) * 4)
  r_dt = code.acquire_register((dt,) * 4)
  cal.dcl_output(reg.o0, USAGE=cal.usage.generic)
  cal.dcl_output(reg.o1, USAGE=cal.usage.generic)
  cal.dcl_output(reg.o2, USAGE=cal.usage.generic)
  cal.dcl_resource(0, cal.pixtex_type.twod, cal.fmt.float, UNNORM=True) # positions
  cal.dcl_resource(1, cal.pixtex_type.twod, cal.fmt.float, UNNORM=True) # velocities

  r_foo = code.acquire_register()
  cal.mov(r_foo, r_foo('0000'))

  r_gpos = code.acquire_register()
  cal.mad(r_gpos, reg.v0.y, r_bodies.x, reg.v0.x)

  r_gvel = code.acquire_register()
  cal.mad(r_gvel, r_bodies.x, r_bodies.x, r_gpos)

  cal.ftoi(r_gpos, r_gpos)
  cal.ftoi(r_gvel, r_gvel)

  cal.sample(0, 0, r_lpos, reg.v0.xy)                # Local position
  cal.sample(1, 1, r_vel, reg.v0.xy)    # Load velocity

  cal.mov(reg.g[r_gpos.x], r_lpos)
  cal.mov(reg.g[r_gvel.x], r_vel)

  cal.mov(r_step, r_step('0000'))

  cal.whileloop()
  cal.breakc(cal.relop.ge, r_step.x, r_numsteps)

  cal.mov(r_count, r_count('0000'))                  # loop counter

  cal.whileloop()
  cal.breakc(cal.relop.ge, r_count.x, r_bodies)

  cal.add(r_foo, r_foo, r_foo('1111'))

  # calculate force
  r_tmp = code.acquire_register()
  cal.ftoi(r_tmp, r_count)

  cal.mov(r_rpos, reg.g[r_tmp.x])

  # d_xyz
  cal.sub(r_diff, r_lpos.xyz0, r_rpos.xyz0)   # local pos - remote pos

  # dist_tmp
  cal.mul(r_dist_vec, r_diff.xxxx, r_diff.xxxx)
  cal.mad(r_dist_vec, r_diff.yyyy, r_diff.yyyy, r_dist_vec)
  cal.mad(r_dist_vec, r_diff.zzzz, r_diff.zzzz, r_dist_vec)
  
  # distance
  # TODO - skip rest of force computation if distance is 0
  cal.sqrt_vec(r_dist, r_dist_vec)

  # force G * ((m[i] * m[j]) / dist_tmp)
  cal.mul(r_force_tmp, r_lpos.wwww, r_rpos.wwww)
  cal.div(r_force_tmp, r_force_tmp, r_dist_vec, ZEROOP = cal.zeroop.zero)
  cal.mul(r_force_tmp, r_force_tmp, r_G)

  # f_xyz
  # TODO - whats going on, is this right?
  cal.div(r_force_vec, r_diff.xyz0, r_dist.xyz1, ZEROOP = cal.zeroop.zero)
  cal.mul(r_force_vec, r_force_vec.xyz0, r_force_tmp.xyz0)

  cal.sub(r_force, r_force.xyz0, r_force_vec.xyz0)

  cal.add(r_count, r_count, r_count('1111'))
  cal.endloop()

  # Acceleration
  cal.div(r_force, r_force.xyz0, r_lpos.wwww, ZEROOP = cal.zeroop.zero)

  # Velocity
  cal.mad(r_vel, r_force, r_dt, r_vel)

  # Position
  cal.mad(reg.o0, r_vel.xyz0, r_dt.xyz0, r_lpos.xyzw)

  # store updated pos and vel
  cal.mov(reg.g[r_gpos.x], r_lpos)
  cal.mov(reg.g[r_gvel.x], r_vel)

  cal.add(r_step, r_step, r_step('1111'))
  cal.endloop()

  cal.mov(reg.o0, r_lpos)
  cal.mov(reg.o1, r_vel)
  cal.mov(reg.o2, r_foo)
  return code
コード例 #2
0
ファイル: nbody.py プロジェクト: KapilRijhwani/corepy
def cal_nb_generate(n_bodies, dt):
  code = env.InstructionStream()
  cal.set_active_code(code)
  fn_bodies = float(n_bodies)

  r_count = code.acquire_register()
  r_lpos = code.acquire_register()
  r_rpos = code.acquire_register()
  r_force = code.acquire_register()
  r_diff = code.acquire_register()
  r_dist_vec = code.acquire_register()
  r_dist = code.acquire_register()
  r_force_tmp = code.acquire_register()
  r_force_vec = code.acquire_register()
  r_vel = code.acquire_register()

  #code.add("dcl_input_position_interp(linear_noperspective) v0.x___")
  cal.dcl_input(reg.v0.x___, USAGE=cal.usage.pos, INTERP=cal.interp.linear_noperspective)
  r_bodies = code.acquire_register((fn_bodies,) * 4)
  r_G = code.acquire_register((G,) * 4)
  r_dt = code.acquire_register((dt,) * 4)
  cal.dcl_output(reg.o0, USAGE=cal.usage.generic)
  cal.dcl_output(reg.o1, USAGE=cal.usage.generic)
  cal.dcl_resource(0, cal.pixtex_type.oned, cal.fmt.float, UNNORM=True) # positions
  cal.dcl_resource(1, cal.pixtex_type.oned, cal.fmt.float, UNNORM=True) # velocities

  # Loop over all other points to calculate the force
  cal.mov(r_count, r_count('0000'))                  # loop counter
  cal.sample(0, 0, r_lpos, reg.v0.x)        # Local position
  cal.mov(r_force, r_force('0000'))                  # total force


  # Compute force using input from every other point
  cal.whileloop()
  # Break if end of points reached
  cal.breakc(cal.relop.ge, r_count, r_bodies)

  cal.sample(0, 0, r_rpos, r_count.x)       # Remote position

  # d_xyz
  cal.sub(r_diff, r_lpos.xyz0, r_rpos.xyz0)   # local pos - remote pos

  # dist_tmp
  cal.mul(r_dist_vec, r_diff.xxxx, r_diff.xxxx)
  cal.mad(r_dist_vec, r_diff.yyyy, r_diff.yyyy, r_dist_vec)
  cal.mad(r_dist_vec, r_diff.zzzz, r_diff.zzzz, r_dist_vec)
  
  # distance
  # TODO - skip rest of force computation if distance is 0
  cal.sqrt_vec(r_dist, r_dist_vec)

  # force G * ((m[i] * m[j]) / dist_tmp)
  cal.mul(r_force_tmp, r_lpos.wwww, r_rpos.wwww)
  cal.div(cal.zeroop.zero, r_force_tmp, r_force_tmp, r_dist_vec)
  cal.mul(r_force_tmp, r_force_tmp, r_G)

  # f_xyz
  cal.div(cal.zeroop.zero, r_force_vec, r_diff.xyz0, r_dist.xyz1)
  cal.mul(r_force_vec, r_force_vec.xyz0, r_force_tmp.xyz0)

  cal.sub(r_force, r_force.xyz0, r_force_vec.xyz0)


  # Increment loop counter, end loop
  cal.add(r_count, r_count, r_count('1111'))
  cal.endloop()

  # Acceleration
  cal.div(cal.zeroop.zero, r_force, r_force.xyz0, r_lpos.wwww)

  # Velocity
  cal.sample(1, 1, r_vel, reg.v0.x)    # Load velocity
  cal.mad(r_vel, r_force, r_dt, r_vel)
  cal.mov(reg.o1, r_vel)

  # Position
  cal.mad(reg.o0, r_vel.xyz0, r_dt.xyz0, r_lpos.xyzw)

  return code
コード例 #3
0
ファイル: nbody.py プロジェクト: KapilRijhwani/corepy
def cal_nb_generate_2d(prgm, n_bodies, dt):
  code = prgm.get_stream()
  cal.set_active_code(code)
  fn_bodies = float(n_bodies)

  #r_cx = prgm.acquire_register()
  #r_cy = prgm.acquire_register()
  r_count = prgm.acquire_register()
  r_lpos = prgm.acquire_register()
  r_rpos = prgm.acquire_register()
  r_force = prgm.acquire_register()
  r_diff = prgm.acquire_register()
  r_dist_vec = prgm.acquire_register()
  r_dist = prgm.acquire_register()
  r_force_tmp = prgm.acquire_register()
  r_force_vec = prgm.acquire_register()
  r_vel = prgm.acquire_register()

  #code.add("dcl_input_position_interp(linear_noperspective) v0.xy__")
  cal.dcl_input(reg.v0.xy__, USAGE=cal.usage.pos, INTERP=cal.interp.linear_noperspective)
  r_bodies = prgm.acquire_register((fn_bodies,) * 4)
  r_G = prgm.acquire_register((G,) * 4)
  r_dt = prgm.acquire_register((dt,) * 4)
  cal.dcl_output(reg.o0, USAGE=cal.usage.generic)
  cal.dcl_output(reg.o1, USAGE=cal.usage.generic)
  cal.dcl_resource(0, cal.pixtex_type.twod, cal.fmt.float, UNNORM=True) # positions
  cal.dcl_resource(1, cal.pixtex_type.twod, cal.fmt.float, UNNORM=True) # velocities

  # Loop over all other points to calculate the force
  cal.mov(r_count, r_count('0000'))                  # loop counter
  #cal.mov(r_cx, r_cx('0000'))                  # loop counter
  #cal.mov(r_cy, r_cy('0000'))                  # loop counter
  cal.sample(0, 0, r_lpos, reg.v0.xy)                # Local position
  cal.mov(r_force, r_force('0000'))                  # total force


  # Compute force using input from every other point
  cal.whileloop()
  cal.breakc(cal.relop.ge, r_count.x, r_bodies)

  cal.mov(r_count, r_count.x0zw)

  cal.whileloop()
  cal.breakc(cal.relop.ge, r_count.y, r_bodies)

  #for i in xrange(0, 4):
  #cal.add(r_count, r_cx('x000'), r_cy('0x00'))
  cal.sample(0, 0, r_rpos, r_count.xy)       # Remote position

  # d_xyz
  cal.sub(r_diff, r_lpos.xyz0, r_rpos.xyz0)   # local pos - remote pos

  # dist_tmp
  #cal.mul(r_dist_vec, r_diff.xxxx, r_diff.xxxx)
  #cal.mad(r_dist_vec, r_diff.yyyy, r_diff.yyyy, r_dist_vec)
  #cal.mad(r_dist_vec, r_diff.zzzz, r_diff.zzzz, r_dist_vec)
  cal.dp3(r_dist_vec, r_diff, r_diff, IEEE = False)
  
  # distance
  # TODO - skip rest of force computation if distance is 0
  cal.sqrt_vec(r_dist, r_dist_vec)

  # force G * ((m[i] * m[j]) / dist_tmp)
  cal.mul(r_force_tmp, r_lpos.wwww, r_rpos.wwww, IEEE = False)
  cal.div(r_force_tmp, r_force_tmp, r_dist_vec, ZEROOP = cal.zeroop.zero)
  cal.mul(r_force_tmp, r_force_tmp, r_G, IEEE = False)

  # f_xyz
  # TODO - whats going on, is this right?
  cal.div(r_force_vec, r_diff.xyz0, r_dist.xyz1, ZEROOP = cal.zeroop.zero)
  cal.mul(r_force_vec, r_force_vec.xyz0, r_force_tmp.xyz0, IEEE = False)

  cal.sub(r_force, r_force.xyz0, r_force_vec.xyz0)

  #cal.add(r_cy, r_cy, r_count('1111'))

  #cal.add(r_count, r_count, r_count('0100'))
  #cal.ifc(cal.relop.ge, r_count.y, r_bodies.y)
  ## TODO - can I merge these two?
  #cal.mov(r_count('_y__'), r_count('x0zw'))
  #cal.add(r_count, r_count, r_count('1000'))
  #cal.endif()

  # Increment loop counter, end loop
  cal.add(r_count, r_count, r_count('0100'))
  cal.endloop()

  cal.add(r_count, r_count, r_count('1000'))
  #cal.add(r_cx, r_cx, r_cx('1111'))
  cal.endloop()

  # Acceleration
  cal.div(r_force, r_force.xyz0, r_lpos.wwww, ZEROOP = cal.zeroop.zero)

  # Velocity
  cal.sample(1, 1, r_vel, reg.v0.xy)    # Load velocity
  cal.mad(r_vel, r_force, r_dt, r_vel, IEEE = False)
  cal.mov(reg.o1, r_vel)

  # Position
  cal.mad(reg.o0, r_vel.xyz0, r_dt.xyz0, r_lpos.xyzw, IEEE = False)

  #cal.mov(reg.g[0], r_vel)

  return code