mirror of
https://github.com/tinygrad/tinygrad.git
synced 2026-01-09 15:08:02 -05:00
178 lines
8.3 KiB
Python
178 lines
8.3 KiB
Python
import ctypes, pathlib, argparse, pickle, re, functools, dataclasses, itertools, threading
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from typing import Generator
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from tinygrad.helpers import temp, unwrap, DEBUG
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from tinygrad.device import ProfileEvent, ProfileDeviceEvent, ProfileProgramEvent
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from tinygrad.runtime.ops_amd import ProfileSQTTEvent, ProfilePMCEvent
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from tinygrad.runtime.autogen import llvm, rocprof
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from tinygrad.runtime.support.elf import elf_loader
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# to pass NULL to callbacks
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llvm.LLVMCreateDisasmCPUFeatures.argtypes = tuple(llvm.LLVMCreateDisasmCPUFeatures.argtypes[:5]) + (ctypes.c_void_p, ctypes.c_void_p)
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def llvm_disasm(arch:str, lib:bytes) -> dict[int, tuple[str, int]]:
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llvm.LLVMInitializeAMDGPUTargetInfo()
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llvm.LLVMInitializeAMDGPUTargetMC()
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llvm.LLVMInitializeAMDGPUAsmParser()
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llvm.LLVMInitializeAMDGPUDisassembler()
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ctx = llvm.LLVMCreateDisasmCPUFeatures("amdgcn-amd-amdhsa".encode(), arch.encode(), "".encode(), None, 0, None, None)
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image, sections, relocs = elf_loader(lib)
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text = next((sh.header for sh in sections if sh.name == ".text"), None)
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off, sz = unwrap(text).sh_addr, unwrap(text).sh_size
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addr_table:dict[int, tuple[str, int]] = {}
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out = ctypes.create_string_buffer(128)
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cur_off = off
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while cur_off < sz + off:
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view = (ctypes.c_ubyte * ((sz + off) - cur_off)).from_buffer_copy(memoryview(image)[cur_off:])
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instr_sz = llvm.LLVMDisasmInstruction(ctx, view, ctypes.c_uint64(len(view)), ctypes.c_uint64(0), out, ctypes.c_size_t(128))
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addr_table[cur_off] = (out.value.decode("utf-8", "replace").strip(), instr_sz)
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cur_off += instr_sz
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return addr_table
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@dataclasses.dataclass(frozen=True)
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class InstExec:
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typ:str
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pc:int
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stall:int
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dur:int
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time:int
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@dataclasses.dataclass(frozen=True)
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class WaveSlot:
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wave_id:int
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cu:int
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simd:int
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se:int
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@property
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def cu_loc(self) -> str: return f"SE:{self.se} CU:{self.cu}"
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@property
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def simd_loc(self) -> str: return f"{self.cu_loc} SIMD:{self.simd}"
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@property
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def wave_loc(self) -> str: return f"{self.simd_loc} W:{self.wave_id}"
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@dataclasses.dataclass(frozen=True)
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class WaveExec(WaveSlot):
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begin_time:int
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end_time:int
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insts:bytearray
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def unpack_insts(self) -> Generator[InstExec, None, None]:
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sz = ctypes.sizeof(struct:=rocprof.rocprofiler_thread_trace_decoder_inst_t)
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insts_array = (struct*(len(self.insts)//sz)).from_buffer(self.insts)
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for inst in insts_array:
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inst_typ = rocprof.enum_rocprofiler_thread_trace_decoder_inst_category_t.get(inst.category)
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yield InstExec(inst_typ, inst.pc.address, inst.stall, inst.duration, inst.time)
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@dataclasses.dataclass(frozen=True)
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class OccEvent(WaveSlot):
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time:int
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start:int
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class _ROCParseCtx:
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def __init__(self, dev_evs:dict[str, ProfileDeviceEvent], sqtt_evs:list[ProfileSQTTEvent], prog_evs:list[ProfileProgramEvent]):
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self.dev_evs, self.sqtt_evs, self.prog_evs = dev_evs, iter(sqtt_evs), prog_evs
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self.disasms:dict[str, dict[int, tuple[str, int]]] = {}
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self.inst_execs:dict[str, list[WaveExec]] = {}
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self.occ_events:dict[str, list[OccEvent]] = {}
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for prog in prog_evs:
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arch = "gfx%d%x%x" % ((trgt:=unwrap(dev_evs[prog.device].props)['gfx_target_version']) // 10000, (trgt // 100) % 100, trgt % 100)
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base = unwrap(prog.base)
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self.disasms[prog.name] = asm = {base+addr:info for addr,info in llvm_disasm(arch, unwrap(prog.lib)).items()}
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def next_sqtt(self):
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x = next(self.sqtt_evs, None)
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self.active_kern = x.kern if x is not None else None
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self.active_se = x.se if x is not None else None
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self.active_blob = (ctypes.c_ubyte * len(x.blob)).from_buffer_copy(x.blob) if x is not None else None
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return self.active_blob
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def on_occupancy_ev(self, ev:rocprof.rocprofiler_thread_trace_decoder_occupancy_t):
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if DEBUG >= 5: print(f"OCC {ev.time=} {self.active_se=} {ev.cu=} {ev.simd=} {ev.wave_id=} {ev.start=}")
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self.occ_events.setdefault(unwrap(self.active_kern), []).append(OccEvent(ev.wave_id, ev.cu, ev.simd, unwrap(self.active_se), ev.time, ev.start))
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def on_wave_ev(self, ev:rocprof.rocprofiler_thread_trace_decoder_wave_t):
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if DEBUG >= 5: print(f"WAVE {ev.wave_id=} {self.active_se=} {ev.cu=} {ev.simd=} {ev.contexts=} {ev.begin_time=} {ev.end_time=}")
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# Skip wave events without instruction timings, occupancy events give the start and duration.
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if ev.instructions_size == 0: return
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insts_blob = bytearray(sz:=ev.instructions_size * ctypes.sizeof(rocprof.rocprofiler_thread_trace_decoder_inst_t))
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ctypes.memmove((ctypes.c_char * sz).from_buffer(insts_blob), ev.instructions_array, sz)
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self.inst_execs.setdefault(unwrap(self.active_kern), []).append(WaveExec(ev.wave_id, ev.cu, ev.simd, unwrap(self.active_se), ev.begin_time,
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ev.end_time, insts_blob))
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def decode(profile:list[ProfileEvent]) -> _ROCParseCtx:
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dev_events:dict[str, ProfileDeviceEvent] = {}
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sqtt_events:list[ProfileSQTTEvent] = []
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prog_events:list[ProfileProgramEvent] = []
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for e in profile:
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if isinstance(e, ProfileDeviceEvent): dev_events[e.device] = e
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if isinstance(e, ProfileSQTTEvent): sqtt_events.append(e)
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if isinstance(e, ProfileProgramEvent) and e.device.startswith("AMD"): prog_events.append(e)
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ROCParseCtx = _ROCParseCtx(dev_events, sqtt_events, prog_events)
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@rocprof.rocprof_trace_decoder_se_data_callback_t
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def copy_cb(buf, buf_size, _):
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if (prof_info:=ROCParseCtx.next_sqtt()) is None: return 0
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buf[0] = ctypes.cast(prof_info, ctypes.POINTER(ctypes.c_ubyte))
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buf_size[0] = len(prof_info)
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return len(prof_info)
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@rocprof.rocprof_trace_decoder_trace_callback_t
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def trace_cb(record_type, events_ptr, n, _):
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match record_type:
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case rocprof.ROCPROFILER_THREAD_TRACE_DECODER_RECORD_OCCUPANCY:
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for ev in (rocprof.rocprofiler_thread_trace_decoder_occupancy_t * n).from_address(events_ptr): ROCParseCtx.on_occupancy_ev(ev)
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case rocprof.ROCPROFILER_THREAD_TRACE_DECODER_RECORD_WAVE:
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for ev in (rocprof.rocprofiler_thread_trace_decoder_wave_t * n).from_address(events_ptr): ROCParseCtx.on_wave_ev(ev)
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case rocprof.ROCPROFILER_THREAD_TRACE_DECODER_RECORD_REALTIME:
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if DEBUG >= 5:
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pairs = [(ev.shader_clock, ev.realtime_clock) for ev in (rocprof.rocprofiler_thread_trace_decoder_realtime_t * n).from_address(events_ptr)]
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print(f"REALTIME {pairs}")
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case _:
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if DEBUG >= 5: print(rocprof.enum_rocprofiler_thread_trace_decoder_record_type_t.get(record_type), events_ptr, n)
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return rocprof.ROCPROFILER_THREAD_TRACE_DECODER_STATUS_SUCCESS
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@rocprof.rocprof_trace_decoder_isa_callback_t
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def isa_cb(instr_ptr, mem_size_ptr, size_ptr, pc, _):
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instr, mem_size_ptr[0] = ROCParseCtx.disasms[unwrap(ROCParseCtx.active_kern)][pc.address]
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# this is the number of bytes to next instruction, set to 0 for end_pgm
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if instr == "s_endpgm": mem_size_ptr[0] = 0
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if (max_sz:=size_ptr[0]) == 0: return rocprof.ROCPROFILER_THREAD_TRACE_DECODER_STATUS_ERROR_OUT_OF_RESOURCES
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# truncate the instr if it doesn't fit
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if (str_sz:=len(instr_bytes:=instr.encode()))+1 > max_sz: str_sz = max_sz
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ctypes.memmove(instr_ptr, instr_bytes, str_sz)
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size_ptr[0] = str_sz
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return rocprof.ROCPROFILER_THREAD_TRACE_DECODER_STATUS_SUCCESS
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def worker():
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try: rocprof.rocprof_trace_decoder_parse_data(copy_cb, trace_cb, isa_cb, None)
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except AttributeError as e: raise RuntimeError("Failed to find rocprof-trace-decoder. Run sudo ./extra/sqtt/install_sqtt_decoder.py to install") from e
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(t:=threading.Thread(target=worker, daemon=True)).start()
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t.join()
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return ROCParseCtx
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument('--profile', type=pathlib.Path, help='Path to profile', default=pathlib.Path(temp("profile.pkl", append_user=True)))
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args = parser.parse_args()
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with args.profile.open("rb") as f: profile = pickle.load(f)
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rctx = decode(profile)
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print('SQTT:', rctx.inst_execs.keys())
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for ev in profile:
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if not isinstance(ev, ProfilePMCEvent): continue
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print(f"PMC Event: dev={ev.device} kern={ev.kern}")
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ptr = 0
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for s in ev.sched:
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view = memoryview(ev.blob).cast('Q')
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print(f"\t{s.name}")
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for xcc, inst, se_idx, sa_idx, wgp_idx in itertools.product(range(s.xcc), range(s.inst), range(s.se), range(s.sa), range(s.wgp)):
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print(f"\t\tXCC {xcc} Inst {inst} SE {se_idx} SA {sa_idx} WGP {wgp_idx}: {view[ptr]:#x}")
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ptr += 1
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