Delete _patch_diagnostics.py
Browse files- _patch_diagnostics.py +0 -38
_patch_diagnostics.py
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def compute_relaxer_diagnostics(model, sched, relaxer_deltas, x, y, corpus, bs, cs):
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"""
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Compare relaxer delta on inactive chunks to what dense gradient would have been.
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Returns (grad_cos, mag_ratio) or (None, None) if not applicable.
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"""
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if not relaxer_deltas: return None, None
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# Compute dense gradients — needs grad enabled
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for m in gsl(model): m.se=False
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for p in model.parameters(): p.grad=None
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with torch.enable_grad():
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_,lo=model(x,y)
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lo.backward()
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cos_sims=[]; mag_ratios=[]
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with torch.no_grad():
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for m,delta in relaxer_deltas.items():
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if m not in sched.m2i: continue
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ids=sched.m2i[m]; nc=len(ids); di=m.weight.shape[1]
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la=sched.act[ids]; li=~la
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if li.sum()==0 or m.weight.grad is None: continue
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# Dense gradient for inactive chunks, reshaped
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dense_g=m.weight.grad.view(nc,cs,di)[li] # (n_inact, cs, di)
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# Flatten for cosine/magnitude
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d_flat=delta.reshape(-1); g_flat=dense_g.reshape(-1)
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dn=d_flat.norm(); gn=g_flat.norm()
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if dn>1e-12 and gn>1e-12:
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cos_sims.append(F.cosine_similarity(d_flat.unsqueeze(0),g_flat.unsqueeze(0)).item())
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mag_ratios.append((dn/gn).item())
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# Restore sparse mode
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for m in gsl(model): m.se=True
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for p in model.parameters(): p.grad=None
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if not cos_sims: return None, None
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return sum(cos_sims)/len(cos_sims), sum(mag_ratios)/len(mag_ratios)
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