ywkang
ff2c677a9c
tl.program_id(axis=0) returns local PE id within cube, tl.program_id(axis=1) returns cube id. Enables cube-aware sharding in benchmark kernels. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
367 lines
12 KiB
Python
367 lines
12 KiB
Python
"""Tests for Triton emulator: TLContext, command generation, kernel registry."""
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from kernbench.common.pe_commands import (
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CompletionHandle,
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CompositeCmd,
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DmaReadCmd,
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DmaWriteCmd,
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GemmCmd,
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MathCmd,
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PeCpuOverheadCmd,
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TensorHandle,
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WaitCmd,
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)
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from kernbench.triton_emu.registry import clear_registry, get_kernel, register_kernel
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from kernbench.triton_emu.tl_context import TLContext, run_kernel
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def _ctx(**kwargs) -> TLContext:
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return TLContext(dispatch_cycles=0, **kwargs)
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def _ctx_with_overhead(**kwargs) -> TLContext:
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return TLContext(dispatch_cycles=1, **kwargs)
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# ── 1. tl.load → DmaReadCmd ──────────────────────────────────────
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def test_tl_load_generates_dma_read():
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tl = _ctx()
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h = tl.load(0x1000, shape=(32, 64), dtype="f16")
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assert isinstance(h, TensorHandle)
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assert h.shape == (32, 64)
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assert h.nbytes == 32 * 64 * 2
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cmds = tl.commands
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assert len(cmds) == 1
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assert isinstance(cmds[0], DmaReadCmd)
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assert cmds[0].src_addr == 0x1000
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assert cmds[0].nbytes == 32 * 64 * 2
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# ── 2. tl.store → DmaWriteCmd ────────────────────────────────────
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def test_tl_store_generates_dma_write():
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tl = _ctx()
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h = tl.load(0x1000, shape=(16, 16), dtype="f32")
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tl.store(0x2000, h)
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cmds = [c for c in tl.commands if isinstance(c, DmaWriteCmd)]
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assert len(cmds) == 1
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assert cmds[0].dst_addr == 0x2000
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assert cmds[0].nbytes == 16 * 16 * 4
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# ── 3. tl.dot → GemmCmd ──────────────────────────────────────────
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def test_tl_dot_generates_gemm_cmd():
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tl = _ctx()
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a = tl.load(0x1000, shape=(32, 64), dtype="f16")
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b = tl.load(0x2000, shape=(64, 16), dtype="f16")
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out = tl.dot(a, b)
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assert out.shape == (32, 16)
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cmds = [c for c in tl.commands if isinstance(c, GemmCmd)]
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assert len(cmds) == 1
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assert cmds[0].m == 32
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assert cmds[0].k == 64
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assert cmds[0].n == 16
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# ── 4. tl.exp, tl.sqrt etc. → MathCmd ────────────────────────────
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def test_tl_math_unary_ops():
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tl = _ctx()
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x = tl.load(0x1000, shape=(8, 8), dtype="f16")
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for op_name, op_fn in [
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("exp", tl.exp), ("log", tl.log), ("sqrt", tl.sqrt),
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("abs", tl.abs), ("sigmoid", tl.sigmoid),
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("cos", tl.cos), ("sin", tl.sin),
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]:
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result = op_fn(x)
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assert isinstance(result, TensorHandle)
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assert result.shape == x.shape
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math_cmds = [c for c in tl.commands if isinstance(c, MathCmd)]
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ops = [c.op for c in math_cmds]
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assert ops == ["exp", "log", "sqrt", "abs", "sigmoid", "cos", "sin"]
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# ── 5. a + b, a * b → MathCmd ────────────────────────────────────
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def test_tl_math_binary_ops():
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tl = _ctx()
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a = tl.load(0x1000, shape=(4, 4), dtype="f16")
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b = tl.load(0x2000, shape=(4, 4), dtype="f16")
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r1 = run_kernel(lambda tl: None, tl) # activate context for operators
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# Need active context for operators
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tl2 = _ctx()
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a2 = tl2.load(0x1000, shape=(4, 4), dtype="f16")
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b2 = tl2.load(0x2000, shape=(4, 4), dtype="f16")
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def kernel(tl):
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pass
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# Use run_kernel to activate context, then test operators
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tl3 = _ctx()
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def binary_kernel(tl):
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a = tl.load(0x1000, shape=(4, 4), dtype="f16")
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b = tl.load(0x2000, shape=(4, 4), dtype="f16")
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_ = a + b
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_ = a - b
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_ = a * b
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_ = a / b
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run_kernel(binary_kernel, tl3)
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math_cmds = [c for c in tl3.commands if isinstance(c, MathCmd)]
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ops = [c.op for c in math_cmds]
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assert ops == ["add", "sub", "mul", "div"]
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# ── 6. tl.sum, tl.max → MathCmd with axis ────────────────────────
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def test_tl_reduction_ops():
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tl = _ctx()
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x = tl.load(0x1000, shape=(32, 64), dtype="f16")
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s = tl.sum(x, axis=1)
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m = tl.max(x, axis=0)
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assert s.shape == (32, 1)
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assert m.shape == (1, 64)
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math_cmds = [c for c in tl.commands if isinstance(c, MathCmd)]
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assert math_cmds[0].op == "sum" and math_cmds[0].axis == 1
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assert math_cmds[1].op == "max" and math_cmds[1].axis == 0
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# ── 7. tl.composite → CompositeCmd + CompletionHandle ────────────
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def test_tl_composite_nonblocking():
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tl = _ctx()
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a = tl.load(0x1000, shape=(32, 64), dtype="f16")
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b = tl.load(0x2000, shape=(64, 32), dtype="f16")
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h = tl.composite(op="gemm", a=a, b=b, out_ptr=0x3000)
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assert isinstance(h, CompletionHandle)
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comp_cmds = [c for c in tl.commands if isinstance(c, CompositeCmd)]
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assert len(comp_cmds) == 1
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assert comp_cmds[0].op == "gemm"
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assert comp_cmds[0].out_addr == 0x3000
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assert comp_cmds[0].out_nbytes == 32 * 32 * 2 # M×N×dtype_bytes
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# ── 8. tl.wait(handle) → WaitCmd ─────────────────────────────────
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def test_tl_wait_specific():
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tl = _ctx()
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a = tl.load(0x1000, shape=(4, 4), dtype="f16")
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h = tl.composite(op="gemm", a=a, b=a, out_ptr=0x2000)
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tl.wait(h)
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wait_cmds = [c for c in tl.commands if isinstance(c, WaitCmd)]
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assert len(wait_cmds) == 1
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assert wait_cmds[0].handle == h
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# ── 9. tl.wait() → WaitCmd(handle=None) ──────────────────────────
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def test_tl_wait_all():
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tl = _ctx()
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tl.wait()
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wait_cmds = [c for c in tl.commands if isinstance(c, WaitCmd)]
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assert len(wait_cmds) == 1
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assert wait_cmds[0].handle is None
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# ── 10. tl.cycles → PeCpuOverheadCmd ─────────────────────────────
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def test_tl_cycles():
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tl = _ctx()
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tl.cycles(10)
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assert len(tl.commands) == 1
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assert isinstance(tl.commands[0], PeCpuOverheadCmd)
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assert tl.commands[0].cycles == 10
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# ── 11. tl.program_id ────────────────────────────────────────────
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def test_tl_program_id():
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tl = TLContext(pe_id=5, num_programs=8)
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assert tl.program_id(0) == 5
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assert tl.num_programs(0) == 8
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def test_tl_program_id_axis1():
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"""axis=1 returns cube_id and num_cubes."""
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tl = TLContext(pe_id=3, num_programs=8, cube_id=7, num_cubes=16)
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assert tl.program_id(0) == 3
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assert tl.program_id(1) == 7
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assert tl.num_programs(0) == 8
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assert tl.num_programs(1) == 16
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def test_tl_program_id_global():
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"""global_pid = cube_id * num_pes_per_cube + local_pe_id."""
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pe_id, cube_id, num_pes = 5, 3, 8
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tl = TLContext(pe_id=pe_id, num_programs=num_pes, cube_id=cube_id, num_cubes=16)
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global_pid = tl.program_id(1) * tl.num_programs(0) + tl.program_id(0)
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assert global_pid == cube_id * num_pes + pe_id
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# ── 12. tl.arange, tl.zeros, tl.full ─────────────────────────────
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def test_tl_arange_zeros_full():
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tl = _ctx()
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r = tl.arange(0, 16, dtype="i32")
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assert r.shape == (16,)
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assert r.dtype == "i32"
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z = tl.zeros((4, 8), dtype="f16")
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assert z.shape == (4, 8)
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assert z.nbytes == 4 * 8 * 2
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f = tl.full((2, 3), value=1.0, dtype="f32")
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assert f.shape == (2, 3)
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assert f.nbytes == 2 * 3 * 4
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# ── 13. tl.trans → shape change, no command ───────────────────────
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def test_tl_trans_shape():
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tl = _ctx()
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h = tl.load(0x1000, shape=(32, 64), dtype="f16")
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t = tl.trans(h)
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assert t.shape == (64, 32)
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assert t.id == h.id # same underlying data
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# Only DmaReadCmd from load, no command from trans
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assert len(tl.commands) == 1
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assert isinstance(tl.commands[0], DmaReadCmd)
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# ── 14. Kernel registry ──────────────────────────────────────────
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def test_kernel_registry():
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clear_registry()
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def my_kernel(tl):
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pass
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register_kernel("test_kern", my_kernel)
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assert get_kernel("test_kern") is my_kernel
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clear_registry()
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def test_kernel_registry_missing():
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clear_registry()
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import pytest
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with pytest.raises(KeyError):
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get_kernel("nonexistent")
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def test_kernel_registry_duplicate():
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clear_registry()
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register_kernel("dup", lambda tl: None)
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import pytest
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with pytest.raises(ValueError):
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register_kernel("dup", lambda tl: None)
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clear_registry()
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# ── 15. GEMM kernel → correct command sequence ───────────────────
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def test_gemm_kernel_command_sequence():
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"""32×64 × 64×32 GEMM kernel produces [DmaRead, DmaRead, Composite]."""
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def gemm_kernel(a_ptr, b_ptr, out_ptr, tl):
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pid = tl.program_id(0)
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a = tl.load(a_ptr, shape=(32, 64), dtype="f16")
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b = tl.load(b_ptr + pid * 64 * 32 * 2, shape=(64, 32), dtype="f16")
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tl.composite(op="gemm", a=a, b=b, out_ptr=out_ptr + pid * 32 * 32 * 2)
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tl = _ctx(pe_id=3)
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run_kernel(gemm_kernel, tl, a_ptr=0x1000, b_ptr=0x2000, out_ptr=0x3000)
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types = [type(c).__name__ for c in tl.commands]
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assert types == ["DmaReadCmd", "DmaReadCmd", "CompositeCmd"]
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# ── 16. Attention kernel → correct command sequence ───────────────
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def test_attention_kernel_command_sequence():
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"""Attention kernel: load→dot→math ops→dot→store."""
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def attention_kernel(q_ptr, k_ptr, v_ptr, out_ptr, tl,
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seq_len=16, head_dim=8):
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pid = tl.program_id(0)
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q = tl.load(q_ptr, shape=(seq_len, head_dim), dtype="f16")
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k = tl.load(k_ptr, shape=(head_dim, seq_len), dtype="f16")
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scores = tl.dot(q, k)
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row_max = tl.max(scores, axis=1)
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scores = scores - row_max
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scores = tl.exp(scores)
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row_sum = tl.sum(scores, axis=1)
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scores = scores / row_sum
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v = tl.load(v_ptr, shape=(seq_len, head_dim), dtype="f16")
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out = tl.dot(scores, v)
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tl.store(out_ptr, out)
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tl = _ctx(pe_id=0)
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run_kernel(
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attention_kernel, tl,
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q_ptr=0x1000, k_ptr=0x2000, v_ptr=0x3000, out_ptr=0x4000,
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)
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types = [type(c).__name__ for c in tl.commands]
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# load, load, dot, max, sub, exp, sum, div, load, dot, store
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assert types == [
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"DmaReadCmd", "DmaReadCmd", # load Q, K
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"GemmCmd", # Q @ K
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"MathCmd", "MathCmd", "MathCmd", # max, sub, exp
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"MathCmd", "MathCmd", # sum, div
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"DmaReadCmd", # load V
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"GemmCmd", # scores @ V
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"DmaWriteCmd", # store output
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]
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# Verify math ops
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math_cmds = [c for c in tl.commands if isinstance(c, MathCmd)]
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math_ops = [c.op for c in math_cmds]
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assert math_ops == ["max", "sub", "exp", "sum", "div"]
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# ── 17. Dispatch overhead auto-inserted ───────────────────────────
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def test_dispatch_overhead_inserted():
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"""Each tl API call auto-inserts PeCpuOverheadCmd when dispatch_cycles > 0."""
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tl = _ctx_with_overhead()
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a = tl.load(0x1000, shape=(4, 4), dtype="f16")
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tl.store(0x2000, a)
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types = [type(c).__name__ for c in tl.commands]
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# overhead, load, overhead, store
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assert types == [
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"PeCpuOverheadCmd", "DmaReadCmd",
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"PeCpuOverheadCmd", "DmaWriteCmd",
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]
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# ── 18. where operation ──────────────────────────────────────────
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def test_tl_where():
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tl = _ctx()
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cond = tl.load(0x1000, shape=(4, 4), dtype="i32")
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a = tl.load(0x2000, shape=(4, 4), dtype="f16")
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b = tl.load(0x3000, shape=(4, 4), dtype="f16")
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out = tl.where(cond, a, b)
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assert isinstance(out, TensorHandle)
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math_cmds = [c for c in tl.commands if isinstance(c, MathCmd)]
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assert len(math_cmds) == 1
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assert math_cmds[0].op == "where"
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assert len(math_cmds[0].inputs) == 3
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