creating branch for adding support for CUDA 3.x and Fermi

[git-p4: depot-paths = "//depot/gpgpu_sim_research/fermi/distribution/": change = 6829]

1 files changed, 60 insertions, 0 deletions

diff --git a/benchmarks/CUDA/DG/src/MaxwellsRun3d.c b/benchmarks/CUDA/DG/src/MaxwellsRun3d.c
new file mode 100644
index 0000000..d4ee9f9
--- /dev/null
+++ b/benchmarks/CUDA/DG/src/MaxwellsRun3d.c
@@ -0,0 +1,60 @@
+#include "mpi.h"
+#include "fem.h"
+
+void MaxwellsRun3d(Mesh *mesh, double FinalTime, double dt){
+
+  double time = 0;
+  int    INTRK, tstep=0;
+
+  double mpitime0 = MPI_Wtime();
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  dt = 0.001;
+
+  /* outer time step loop  */
+  while (time<FinalTime){
+
+    /* adjust final step to end exactly at FinalTime */
+    if (time+dt > FinalTime) { dt = FinalTime-time; }
+    
+    for (INTRK=1; INTRK<=5; ++INTRK) {
+      
+      /* compute rhs of TM-mode MaxwellsGPU's equations */
+      const float fdt = dt;
+      const float fa = (float)mesh->rk4a[INTRK-1];
+      const float fb = (float)mesh->rk4b[INTRK-1];
+
+#ifdef CUDA
+      MaxwellsKernel3d(mesh, fa, fb, fdt);
+#else
+      MaxwellsRHS3d(mesh, fa, fb, fdt);
+#endif
+    }
+    
+    time += dt;     /* increment current time */
+    tstep++;        /* increment timestep */
+  }    
+
+#ifdef CUDA
+  cudaThreadSynchronize();
+#endif
+
+  double flopsV = p_Np*p_Np*36 + p_Np*66; /* V3 */
+  double flopsS = p_Nfp*p_Nfaces*(15 + 10 + 36) + p_Np*(p_Nfaces*p_Nfp*12 + 6);
+  double flopsR = p_Np*p_Nfields*4;
+
+  int Kloc = mesh->K;
+  
+  double mpitime1 = MPI_Wtime();
+  
+  double time_total = mpitime1-mpitime0;
+  
+  MPI_Barrier(MPI_COMM_WORLD);
+  printf("%d %d %lg %lg proc, N, time taken, GFLOPS/s (GPU)\n",
+	 mesh->procid,
+	 p_N, 
+	 time_total,
+	 5*(tstep)*( (flopsV+flopsS+flopsR)*((double)Kloc/(1.e9*time_total))));
+	 
+
+}