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This commit is contained in:
André R. Brodtkorb
2018-11-11 15:12:56 +01:00
parent e98ae0a979
commit dcb849b705
3 changed files with 35 additions and 16 deletions
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13
GPUSimulators/HLL2.py
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@@ -69,6 +69,10 @@ class HLL2 (Simulator.BaseSimulator):
self.theta = np.float32(theta)
self.order = np.int32(order)
self.boundary_conditions = boundary_conditions.asCodedInt()
#This kernel is dimensionally split, and therefore only second order every other
#dimsplit timestep. Therefore, step always runs two substeps
self.dt = 2*self.dt
#Get kernels
self.kernel = context.get_prepared_kernel("cuda/SWE2D_HLL2.cu", "HLL2Kernel", \
@@ -95,14 +99,15 @@ class HLL2 (Simulator.BaseSimulator):
def step(self, dt):
if (self.order == 1):
self.substepDimsplit(dt, substep=(self.nt % 2))
self.substepDimsplit(0.5*dt, 0)
self.substepDimsplit(0.5*dt, 1)
elif (self.order == 2):
self.substepDimsplit(dt, substep=0)
self.substepDimsplit(dt, substep=1)
self.substepDimsplit(0.5*dt, 0)
self.substepDimsplit(0.5*dt, 1)
else:
raise(NotImplementedError("Order {:d} is not implemented".format(self.order)))
self.t += dt
self.nt += 1
self.nt += 2
def substepDimsplit(self, dt, substep):
self.kernel.prepared_async_call(self.grid_size, self.block_size, self.stream, \