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better time tracking for grid2
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austin 2024-12-12 00:20:19 -05:00
parent eed5f79130
commit c96113133d
3 changed files with 92 additions and 13 deletions
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19
src/main/c/includes/fluid/env/environment.h vendored
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@ -65,6 +65,22 @@ typedef struct {
float dt;
} FluidSimConsts;
/**
* Time tracking for the fluid simulator
*/
typedef struct {
//density data
double densityTotal;
double densityDiffuse;
double densityAdvect;
//velocity data
double velocityTotal;
double velocityDiffuse;
double velocityAdvect;
double velocityProject;
} FluidTimeTracking;
/**
* Used for tracking the change in density over time of the environment
*/
@ -72,9 +88,8 @@ typedef struct {
double existingDensity;
double newDensity;
double normalizationRatio;
double densityTime;
double velocityTime;
int frame;
FluidTimeTracking timeTracking;
} FluidSimState;
/**

59
src/main/c/src/fluid/sim/grid2/grid2.c
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@ -91,7 +91,17 @@ LIBRARY_API void fluid_grid2_simulate(
//solve vector diffusion
fluid_grid2_solveVectorDiffuse(currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,currentChunk->w0,timestep);
}
//time tracking
gettimeofday(&tv,NULL);
end = 1000000.0 * tv.tv_sec + tv.tv_usec;
perMilli = (end - start) / 1000.0f;
environment->state.timeTracking.velocityDiffuse = perMilli;
start = end;
for(int i = 0; i < numChunks; i++){
Chunk * currentChunk = chunks[i];
//setup projection
fluid_grid2_setupProjection(currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,timestep);
@ -106,10 +116,31 @@ LIBRARY_API void fluid_grid2_simulate(
fluid_grid2_flip_arrays(currentChunk->u,currentChunk->u0);
fluid_grid2_flip_arrays(currentChunk->v,currentChunk->v0);
fluid_grid2_flip_arrays(currentChunk->w,currentChunk->w0);
}
//time tracking
gettimeofday(&tv,NULL);
end = 1000000.0 * tv.tv_sec + tv.tv_usec;
perMilli = (end - start) / 1000.0f;
environment->state.timeTracking.velocityProject = perMilli;
start = end;
for(int i = 0; i < numChunks; i++){
Chunk * currentChunk = chunks[i];
//advect
fluid_grid2_advectVectors(currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,currentChunk->w0,timestep);
}
//time tracking
gettimeofday(&tv,NULL);
end = 1000000.0 * tv.tv_sec + tv.tv_usec;
perMilli = (end - start) / 1000.0f;
environment->state.timeTracking.velocityAdvect = perMilli;
start = end;
for(int i = 0; i < numChunks; i++){
Chunk * currentChunk = chunks[i];
//setup projection
fluid_grid2_setupProjection(currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,timestep);
//Perform main projection solver
@ -119,11 +150,11 @@ LIBRARY_API void fluid_grid2_simulate(
}
//get time at end
//time tracking
gettimeofday(&tv,NULL);
end = 1000000.0 * tv.tv_sec + tv.tv_usec;
perMilli = (end - start) / 1000.0f;
environment->state.velocityTime = perMilli;
environment->state.timeTracking.velocityProject = environment->state.timeTracking.velocityProject + perMilli;
start = end;
///------------------------------------------------------------------------------------------------------------------------------------------------------------------------
@ -146,14 +177,23 @@ LIBRARY_API void fluid_grid2_simulate(
fluid_grid2_addDensity(environment,currentChunk->d,currentChunk->d0,timestep);
environment->state.existingDensity = environment->state.existingDensity + fluid_grid2_calculateSum(currentChunk->d);
//swap all density arrays
fluid_grid2_flip_arrays(currentChunk->d,currentChunk->d0);
//diffuse density
fluid_grid2_solveDiffuseDensity(currentChunk->d,currentChunk->d0,timestep);
//swap all density arrays
fluid_grid2_flip_arrays(currentChunk->d,currentChunk->d0);
}
//time tracking
gettimeofday(&tv,NULL);
end = 1000000.0 * tv.tv_sec + tv.tv_usec;
perMilli = (end - start) / 1000.0f;
environment->state.timeTracking.densityDiffuse = perMilli;
start = end;
for(int i = 0; i < numChunks; i++){
Chunk * currentChunk = chunks[i];
//advect density
fluid_grid2_advectDensity(currentChunk->d,currentChunk->d0,currentChunk->u,currentChunk->v,currentChunk->w,timestep);
}
@ -162,7 +202,16 @@ LIBRARY_API void fluid_grid2_simulate(
gettimeofday(&tv,NULL);
end = 1000000.0 * tv.tv_sec + tv.tv_usec;
perMilli = (end - start) / 1000.0f;
environment->state.densityTime = perMilli;
environment->state.timeTracking.densityAdvect = perMilli;
//summarize time tracking
environment->state.timeTracking.densityTotal = environment->state.timeTracking.densityAdvect + environment->state.timeTracking.densityDiffuse;
environment->state.timeTracking.velocityTotal =
environment->state.timeTracking.velocityDiffuse +
environment->state.timeTracking.velocityAdvect +
environment->state.timeTracking.velocityProject
;
//

27
src/test/c/fluid/sim/grid2/speed_tests.c
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@ -110,8 +110,13 @@ int fluid_sim_grid2_speed_test1(){
printf("Frame time per chunk (micro): %lf \n",avgPerChunk);
printf("Frame time per chunk (milli): %lf \n",perMilli);
printf("Target time (milli): %f \n",TIME_PER_CHUNK);
printf("Velocity time (milli): %f \n",env->state.velocityTime);
printf("Density time (milli): %f \n",env->state.densityTime);
printf("Velocity time (milli): %f \n",env->state.timeTracking.velocityTotal);
printf(" - Advect (milli): %f \n",env->state.timeTracking.velocityAdvect);
printf(" - Diffuse (milli): %f \n",env->state.timeTracking.velocityDiffuse);
printf(" - Project (milli): %f \n",env->state.timeTracking.velocityProject);
printf("Density time (milli): %f \n",env->state.timeTracking.densityTotal);
printf(" - Advect (milli): %f \n",env->state.timeTracking.densityAdvect);
printf(" - Diffuse (milli): %f \n",env->state.timeTracking.densityDiffuse);
printf("\n");
rVal++;
}
@ -164,8 +169,13 @@ int fluid_sim_grid2_speed_test2(){
printf("Frame time per chunk (micro): %lf \n",avgPerChunk);
printf("Frame time per chunk (milli): %lf \n",perMilli);
printf("Target time (milli): %f \n",TIME_PER_CHUNK);
printf("Velocity time (milli): %f \n",env->state.velocityTime);
printf("Density time (milli): %f \n",env->state.densityTime);
printf("Velocity time (milli): %f \n",env->state.timeTracking.velocityTotal);
printf(" - Advect (milli): %f \n",env->state.timeTracking.velocityAdvect);
printf(" - Diffuse (milli): %f \n",env->state.timeTracking.velocityDiffuse);
printf(" - Project (milli): %f \n",env->state.timeTracking.velocityProject);
printf("Density time (milli): %f \n",env->state.timeTracking.densityTotal);
printf(" - Advect (milli): %f \n",env->state.timeTracking.densityAdvect);
printf(" - Diffuse (milli): %f \n",env->state.timeTracking.densityDiffuse);
printf("\n");
rVal++;
}
@ -218,8 +228,13 @@ int fluid_sim_grid2_speed_test3(){
printf("Frame time per chunk (micro): %lf \n",avgPerChunk);
printf("Frame time per chunk (milli): %lf \n",perMilli);
printf("Target time (milli): %f \n",TIME_PER_CHUNK);
printf("Velocity time (milli): %f \n",env->state.velocityTime);
printf("Density time (milli): %f \n",env->state.densityTime);
printf("Velocity time (milli): %f \n",env->state.timeTracking.velocityTotal);
printf(" - Advect (milli): %f \n",env->state.timeTracking.velocityAdvect);
printf(" - Diffuse (milli): %f \n",env->state.timeTracking.velocityDiffuse);
printf(" - Project (milli): %f \n",env->state.timeTracking.velocityProject);
printf("Density time (milli): %f \n",env->state.timeTracking.densityTotal);
printf(" - Advect (milli): %f \n",env->state.timeTracking.densityAdvect);
printf(" - Diffuse (milli): %f \n",env->state.timeTracking.densityDiffuse);
printf("\n");
rVal++;
}