ENH: improve startup time for foamToEnsight conversion (issue #240).

Old code:
    Found 10990 time steps
    Search for moving mesh ... no moving mesh detected.
    Startup in 329.09 s

Updated:
    Found 10990 time steps
    Search for moving mesh ... no moving mesh detected.
    Startup in 1.6 s

- Cause was checking "polyMesh/points" via an IOobject.
  Short-circuit with a check for a polyMesh/ directory first.

  Limit the check to the master-node as well to further reduce
  load on the file-system.

------------------------------

ENH: improve per-step conversion times for foamToEnsight.

Old code:
    Converting 11001 time steps
    Time [0] = 0       Wrote in 1.53 s
    Time [1] = 1       Wrote in 1.52 s
    ...
    Time [100] = 100   Elapsed time 205.35 s

Updated:
    Converting 11001 time steps
    Time [0] = 0       Wrote in 1.4 s
    Time [1] = 1       Wrote in 0.07 s
    ...
    Time [100] = 100   Elapsed time 42.4 s

- Speedup by hashing test results from the first conversion step
  instead of checking each time.

  Check data on all nodes to avoid problems with incomplete writes.

------------------------------

BUG: moving mesh detection failed for foamToEnsightParts

- adjusted to agree with updated foamToEnsight

------------------------------

Note:

- foamToEnsightParts (serial) still has about twice the throughput of
  foamToEnsight.

applications/utilities/postProcessing/dataConversion/foamToEnsightParts/checkHasMovingMesh.H

@@ -2,18 +2,47 @@
 // - could restrict to the selected times
 
 bool hasMovingMesh = false;
-if (timeDirs.size() > 1)
+
+if (timeDirs.size() > 1 && Pstream::master())
 {
-    hasMovingMesh = true;
-    for (label i=0; i < timeDirs.size() && hasMovingMesh; ++i)
+    // We already loaded a mesh (usually from constant).
+    // See if any other "polyMesh/points" files exist too.
+
+    const fileName& baseDir = mesh.time().path();
+
+    Info<< "Search for moving mesh ... " << flush;
+    forAll(timeDirs, timeI)
     {
-        hasMovingMesh = IOobject
+        hasMovingMesh =
         (
-            "points",
-            timeDirs[i].name(),
-            polyMesh::meshSubDir,
-            mesh,
-            IOobject::NO_READ
-        ).typeHeaderOk<pointIOField>(true);
+            isDir(baseDir/timeDirs[timeI].name()/polyMesh::meshSubDir)
+         && IOobject
+            (
+                "points",
+                timeDirs[timeI].name(),
+                polyMesh::meshSubDir,
+                mesh,
+                IOobject::NO_READ,
+                IOobject::NO_WRITE,
+                false  // no register
+            ).typeHeaderOk<pointIOField>(true)
+        );
+
+        if (hasMovingMesh)
+        {
+            break;
+        }
+    }
+
+    if (hasMovingMesh)
+    {
+        Info<< "found." << nl
+            << "    Writing meshes for every timestep." << endl;
+    }
+    else
+    {
+        Info<< "none detected." << endl;
     }
 }
+
+reduce(hasMovingMesh, orOp<bool>());

applications/utilities/postProcessing/dataConversion/foamToEnsightParts/foamToEnsightParts.C

@@ -149,11 +149,12 @@ int main(int argc, char *argv[])
     instantList timeDirs = timeSelector::select0(runTime, args);
 
     // default to binary output, unless otherwise specified
-    IOstream::streamFormat format = IOstream::BINARY;
-    if (args.optionFound("ascii"))
-    {
-        format = IOstream::ASCII;
-    }
+    const IOstream::streamFormat format =
+    (
+        args.optionFound("ascii")
+      ? IOstream::ASCII
+      : IOstream::BINARY
+    );
 
     // control for renumbering iterations
     label indexingNumber = 0;
@@ -204,6 +205,11 @@ int main(int argc, char *argv[])
         regionPrefix = regionName;
     }
 
+    if (Pstream::master())
+    {
+        Info<< "Converting " << timeDirs.size() << " time steps" << endl;
+    }
+
     // Construct the list of ensight parts for the entire mesh
     ensightParts partsList(mesh);
 
@@ -244,6 +250,9 @@ int main(int argc, char *argv[])
         cloudTimesUsed.insert(cloudIter.key(), DynamicList<label>());
     }
 
+    Info<< "Startup in "
+        << timer.cpuTimeIncrement() << " s, "
+        << mem.update().size() << " kB" << nl << endl;
 
     forAll(timeDirs, timeI)
     {

applications/utilities/postProcessing/dataConversion/foamToEnsightParts/getTimeIndex.H

@@ -39,5 +39,5 @@
     }
 
     timeIndices.insert(timeIndex, timeDirs[timeI].value());
-    Info<< "\nTime [" << timeIndex << "] = " << runTime.timeName() << nl;
+    Info<< nl << "Time [" << timeIndex << "] = " << runTime.timeName() << nl;