Fix GPU relax for longer chains by pinning large memory ops to cpu.

PiperOrigin-RevId: 501105389
Change-Id: I6c981d1d3231e008ebae192edb4586479eb5eb34

alphafold/relax/amber_minimize.py

@@ -26,6 +26,7 @@ from alphafold.relax import cleanup
 from alphafold.relax import utils
 import ml_collections
 import numpy as np
+import jax
 from simtk import openmm
 from simtk import unit
 from simtk.openmm import app as openmm_app
@@ -486,7 +487,9 @@ def run_pipeline(
       pdb_string = clean_protein(prot, checks=True)
     else:
       pdb_string = ret["min_pdb"]
-    ret.update(get_violation_metrics(prot))
+    # Calculation of violations can cause CUDA errors for some JAX versions.
+    with jax.default_device(jax.devices("cpu")[0]):
+      ret.update(get_violation_metrics(prot))
     ret.update({
         "num_exclusions": len(exclude_residues),
         "iteration": iteration,