make synchronization for timers optional. only enable with "timer sync"

src/AMOEBA/amoeba_convolution.cpp

@@ -22,6 +22,7 @@
 #include "memory.h"
 #include "neighbor.h"
 #include "remap_wrap.h"
+#include "timer.h"
 
 #include <cmath>
 #include <cstring>
@@ -328,7 +329,7 @@ FFT_SCALAR *AmoebaConvolution::pre_convolution_3d()
 
   double time0,time1;
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   // perform forward FFT
@@ -393,7 +394,7 @@ FFT_SCALAR *AmoebaConvolution::pre_convolution_4d()
 
   double time0,time1;
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   // perform forward FFT
@@ -443,7 +444,7 @@ void *AmoebaConvolution::post_convolution_3d()
 
   double time0,time1;
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   fft2->compute(cfft,cfft,FFT3d::BACKWARD);
@@ -494,7 +495,7 @@ void *AmoebaConvolution::post_convolution_4d()
 
   double time0,time1;
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   fft2->compute(cfft,cfft,FFT3d::BACKWARD);

src/AMOEBA/amoeba_induce.cpp

@@ -24,6 +24,7 @@
 #include "math_special.h"
 #include "my_page.h"
 #include "neigh_list.h"
+#include "timer.h"
 
 #include <cmath>
 
@@ -545,7 +546,7 @@ void PairAmoeba::ufield0c(double **field, double **fieldp)
   }
 
   double time0, time1, time2;
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   // get the real space portion of the mutual field
@@ -795,7 +796,7 @@ void PairAmoeba::dfield0c(double **field, double **fieldp)
   // get the reciprocal space part of the permanent field
 
   double time0, time1, time2;
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   if (polar_kspace_flag) udirect1(field);
@@ -870,7 +871,7 @@ void PairAmoeba::umutual1(double **field, double **fieldp)
 
   // map 2 values to grid
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   grid_uind(fuind,fuinp,gridpre);
@@ -915,7 +916,7 @@ void PairAmoeba::umutual1(double **field, double **fieldp)
 
   // get potential
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   fphi_uind(gridpost,fdip_phi1,fdip_phi2,fdip_sum_phi);

src/AMOEBA/amoeba_multipole.cpp

@@ -21,6 +21,7 @@
 #include "math_const.h"
 #include "math_special.h"
 #include "neigh_list.h"
+#include "timer.h"
 
 #include <cmath>
 
@@ -80,7 +81,7 @@ void PairAmoeba::multipole()
 
   felec = electric / am_dielectric;
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   // compute the real space part of the Ewald summation

src/AMOEBA/amoeba_polar.cpp

@@ -21,6 +21,7 @@
 #include "math_const.h"
 #include "math_special.h"
 #include "neigh_list.h"
+#include "timer.h"
 
 #include <cmath>
 #include <cstring>
@@ -78,7 +79,7 @@ void PairAmoeba::polar()
 
   // compute the real space part of the dipole interactions
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   if (polar_rspace_flag) polar_real();

src/AMOEBA/pair_amoeba.cpp

@@ -29,6 +29,7 @@
 #include "my_page.h"
 #include "neigh_list.h"
 #include "neighbor.h"
+#include "timer.h"
 #include "update.h"
 
 #include <cmath>
@@ -371,7 +372,7 @@ void PairAmoeba::compute(int eflag, int vflag)
 
   double time0,time1,time2,time3,time4,time5,time6,time7,time8;
 
-  MPI_Barrier(world);
+  if (timer->has_sync()) MPI_Barrier(world);
   time0 = platform::walltime();
 
   // if reneighboring step: