misc: Fix operator output with gflopss=None

devito/operator/operator.py

@@ -7,6 +7,7 @@
 from tempfile import gettempdir
 
 from sympy import sympify
+import numpy as np
 
 from devito.arch import ANYCPU, Device, compiler_registry, platform_registry
 from devito.data import default_allocator
@@ -965,7 +966,7 @@ def _emit_apply_profiling(self, args):
             if v is not None:
                 if v.oi is not None:
                     metrics.append("OI=%.2f" % fround(v.oi))
-                if v.gflopss is not None:
+                if v.gflopss is not None and np.isfinite(v.gflopss):
                     metrics.append("%.2f GFlops/s" % fround(v.gflopss))
 
             v = summary.globals.get('fdlike')