ClaudeandClaude Opus 5.5
2b3c2a7529
kernel_v2.cu -> uniform.cu (whole-domain NX/NY, Simulation) and
blocks.cu -> blocked.cu (one block window, every blocked level), with
InitTubeFlow_v2 -> InitTubeFlow. All live callers, include comments,
CONFIG.md, lifecycle doc and current-tree tests move together; no alias.
refinement.cu keeps its name until the dense-route decision.
Historical-revision tooling that names the old files (LES source pins,
timing/J campaign runners, TG run_case, supported_settings citations at
888c8038, development notes) is unchanged on purpose.
No arithmetic change; the PTX symbol InitTubeFlow_v2 is renamed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
98 lines
3.7 KiB
Python
98 lines
3.7 KiB
Python
"""GPU ownership, isolated builds and immutable allocation contracts."""
|
|
from pathlib import Path
|
|
|
|
import numpy as np
|
|
import pycuda.driver as cuda
|
|
import pytest
|
|
|
|
import CelerisLab
|
|
from CelerisLab.cuda import compiler_v2
|
|
from ._cases import make_sim
|
|
|
|
|
|
def test_source_provenance():
|
|
root = Path(__file__).resolve().parents[2] / "src/CelerisLab"
|
|
assert Path(CelerisLab.__file__).resolve().parent == root
|
|
assert Path(compiler_v2.kernel_path("uniform.cu")).resolve() == root / "lbm/kernels/uniform.cu"
|
|
|
|
|
|
def test_two_contexts_interleaved_and_non_lifo_close():
|
|
before = cuda.Context.get_current()
|
|
first = make_sim(nx=32, ny=16)
|
|
second = make_sim(nx=48, ny=24, streaming="esopull", shifted=True)
|
|
try:
|
|
assert first._module is not second._module
|
|
assert cuda.Context.get_current() == before
|
|
first.initialize()
|
|
second.initialize()
|
|
for _ in range(3):
|
|
first.run(1)
|
|
second.run(1)
|
|
assert first.get_macroscopic()["rho"].shape == (16, 32)
|
|
assert second.get_macroscopic()["rho"].shape == (24, 48)
|
|
first.close()
|
|
second.run(1)
|
|
assert np.isfinite(second.get_macroscopic()["rho"]).all()
|
|
assert cuda.Context.get_current() == before
|
|
finally:
|
|
second.close()
|
|
first.close()
|
|
|
|
|
|
def test_structural_change_rejected_before_running():
|
|
with make_sim(nx=32, ny=16) as sim:
|
|
sim.initialize()
|
|
before = sim.get_ddf().copy()
|
|
sim.lbm_cfg.nx = 64
|
|
with pytest.raises(ValueError, match="allocation|structural"):
|
|
sim.run(1)
|
|
with pytest.raises(ValueError, match="allocation|structural"):
|
|
sim._recompile()
|
|
sim.lbm_cfg.nx = 32
|
|
np.testing.assert_array_equal(sim.get_ddf(), before)
|
|
assert sim.stepper.step_count == 0
|
|
sim.run(1)
|
|
|
|
|
|
def test_viscosity_recompile_updates_device_omega():
|
|
import struct
|
|
with make_sim(nx=32, ny=16) as sim:
|
|
sim.lbm_cfg.viscosity = 0.08
|
|
sim.recompile()
|
|
assert sim.stepper.step_count == 0
|
|
sim.initialize()
|
|
with sim.ctx.activate():
|
|
ptr, _ = sim._module.get_global("d_params")
|
|
buf = np.empty(20, dtype=np.uint8)
|
|
cuda.memcpy_dtoh(buf, ptr)
|
|
omega = struct.unpack("=ffffI", buf.tobytes())[0]
|
|
assert omega == pytest.approx(sim.lbm_cfg.omega, rel=1e-7)
|
|
sim.run(1)
|
|
|
|
|
|
@pytest.mark.parametrize("streaming",["double_buffer","esopull"])
|
|
@pytest.mark.parametrize("prior_steps",[3,4])
|
|
def test_reinitialize_matches_fresh_state_and_observation_window(streaming,prior_steps):
|
|
with make_sim(nx=32,ny=16,streaming=streaming,shifted=True) as fresh, \
|
|
make_sim(nx=32,ny=16,streaming=streaming,shifted=True) as reused:
|
|
for sim in (fresh,reused):
|
|
sim.add_body("sensor",center=(16,8),radius=2)
|
|
sim.initialize()
|
|
reused.run(prior_steps)
|
|
assert reused.stepper.step_count==prior_steps
|
|
assert reused.bodies._obs_accum_steps==prior_steps
|
|
reused.initialize()
|
|
assert reused.stepper.step_count==0
|
|
assert reused.bodies._obs_accum_steps==0
|
|
np.testing.assert_array_equal(reused.bodies.obs_pinned,0)
|
|
with reused.ctx.activate():
|
|
obs=np.empty(reused.bodies.obs_total_floats,np.float32)
|
|
cuda.memcpy_dtoh(obs,reused.bodies.obs_gpu)
|
|
np.testing.assert_array_equal(obs,0)
|
|
np.testing.assert_array_equal(reused.get_ddf(),fresh.get_ddf())
|
|
for key,value in fresh.get_macroscopic().items():
|
|
np.testing.assert_array_equal(reused.get_macroscopic()[key],value)
|
|
# Equal next step proves restored parity, not only equal initialization bytes.
|
|
fresh.run(1);reused.run(1)
|
|
np.testing.assert_array_equal(reused.get_ddf(),fresh.get_ddf())
|