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48 lines
2.8 KiB
Python
48 lines
2.8 KiB
Python
import inspect, functools
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from tinygrad.device import Compiled, Allocator, ProfileGraphEntry, ProfileGraphEvent
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from tinygrad.engine.jit import MultiGraphRunner
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from tinygrad.renderer import Renderer, cstyle, nir, ptx, llvmir, wgsl
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from tinygrad.renderer.cstyle import CStyleLanguage
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from tinygrad.uop.ops import UOp, Ops
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from tinygrad.helpers import cpu_profile, getenv, dedup, NULL_ALLOW_COPYOUT, PROFILE, cpu_events, perf_counter_us
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class NullRenderer(CStyleLanguage):
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has_local = False
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float4 = "float4"
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barrier = "// BARRIER"
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code_for_op = {**CStyleLanguage.code_for_op, Ops.THREEFRY: lambda a,b,dtype: f"threefry({a},{b})", Ops.MAX: lambda a,b,dtype: f"max({a},{b})"}
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def asm(self, prg: UOp, lin: UOp) -> bytes:
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assert self.target.arch.startswith("gfx"), "only amd supports assembly"
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from tinygrad.renderer.amd.elf import assemble_linear
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return assemble_linear(prg, lin, self.target.arch)
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class NullProgram:
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def __init__(self, device:str, name:str, lib:bytes, *args, **kwargs): self.device, self.name = device, name
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def __call__(self, *bufs, global_size:tuple[int,int,int]=(1,1,1), local_size:tuple[int,int,int]=(1,1,1), vals:tuple[int, ...]=(), wait=False, **kw):
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with cpu_profile(self.name, self.device): return 1e-3
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class NullAllocator(Allocator['NullDevice']):
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def _alloc(self, size, options): pass
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def _copyin(self, dest, src:memoryview): pass
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def _copyout(self, dest:memoryview, src):
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if not NULL_ALLOW_COPYOUT: raise RuntimeError("no copyout on NULL")
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def _transfer(self, dest, src, sz:int, src_dev, dest_dev):
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with cpu_profile(f"{src_dev.device} -> {dest_dev.device}", f"{src_dev.device}:SDMA:0"): pass
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def _offset(self, buf, offset:int, size:int): pass
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class NullGraph(MultiGraphRunner):
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def __call__(self, input_uops:tuple[UOp, ...], var_vals:dict[str, int], wait=False) -> float|None:
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# description based on command, copied from HCQ graph
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if PROFILE: cpu_events.append(ProfileGraphEvent(ents:=[ProfileGraphEntry(runtime.device if runtime is not None else f"{bufs[1].device}:SDMA:0", \
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runtime.name if runtime is not None else f"{bufs[1].device} -> {bufs[0].device}", i, i+1) \
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for i,((_,_,bufs,_),runtime) in enumerate(zip(self.calls, self.runtimes))], [], [perf_counter_us() for _ in range(len(ents)+1)]))
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return 1e-1
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class NullDevice(Compiled):
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def __init__(self, device:str):
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assert (emu:=getenv("EMULATE", "")) == "", \
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"EMULATE is deprecated, use DEV=NULL:HIP:"+{"AMD":"gfx1100", "AMD_RDNA4":"gfx1201", "AMD_CDNA4":"gfx950"}.get(emu, "<arch>")
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renderers = [NullRenderer] + [r for m in [cstyle, nir, ptx, llvmir, wgsl] for r in m.__dict__.values()
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if inspect.isclass(r) and issubclass(r, Renderer)]
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super().__init__(device, NullAllocator(self), dedup(renderers), functools.partial(NullProgram, device), NullGraph)
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