Initial commit: ept — backprop-free equilibrium transformer (EP)

Code (ep_run/), organized docs (docs/{method,campaign,hardware,outreach,paper}),
analysis scripts (scripts/), ONBOARDING.md entry point. Large data/checkpoints
git-ignored (share separately).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn

1 files changed, 21 insertions, 0 deletions

diff --git a/ep_run/t2fix_freezer.py b/ep_run/t2fix_freezer.py
new file mode 100644
index 0000000..d5d090f
--- /dev/null
+++ b/ep_run/t2fix_freezer.py
@@ -0,0 +1,21 @@
+import time, os, re, shutil
+os.chdir("/home/yurenh2/ept/ep_run")
+LOG, CK = "runs/ep_t2fix.log", "runs/ep_t2fix.pt"
+os.makedirs("runs/t2fix_traj", exist_ok=True)
+last_mt=0; t0=time.time()
+while time.time()-t0 < 24*3600:
+    time.sleep(30)
+    try: ls=[l for l in open(LOG) if l.startswith("step")]
+    except Exception: continue
+    if not ls: continue
+    m=re.search(r"step\s+(\d+)/.*res=([\d.eE+-]+)", ls[-1])
+    if not m: continue
+    step=int(m.group(1)); res=float(m.group(2))
+    try: mt=os.path.getmtime(CK)
+    except Exception: continue
+    if mt!=last_mt and os.path.getsize(CK)>1e6:
+        last_mt=mt
+        try: shutil.copy2(CK, f"runs/t2fix_traj/s{step}.pt"); print(f"froze s{step} res={res:.2e}",flush=True)
+        except Exception: pass
+    if res>0.25: print(f"ep_t2fix DIVERGED step {step}",flush=True); break
+print("t2fix freezer done")