Date: 2022-08-02T03:15:09+00:00

Actual source code: dmnetworkts.c

      1: #include <petsc/private/dmnetworkimpl.h>
      2: #include <petscts.h>
      3: #include <petscdraw.h>

      5: /*
      6:    TSMonitorLGCtxDestroy - Destroys  line graph contexts that where created with TSMonitorLGCtxNetworkCreate().

      8:    Collective on TSMonitorLGCtx_Network

     10:    Input Parameter:
     11: .  ctx - the monitor context

     13: */
     14: PetscErrorCode  TSMonitorLGCtxNetworkDestroy(TSMonitorLGCtxNetwork *ctx)
     15: {
     16:   PetscInt       i;

     18:   for (i=0; i<(*ctx)->nlg; i++) {
     19:     PetscDrawLGDestroy(&(*ctx)->lg[i]);
     20:   }
     21:   PetscFree((*ctx)->lg);
     22:   PetscFree(*ctx);
     23:   return 0;
     24: }

     26: PetscErrorCode  TSMonitorLGCtxNetworkCreate(TS ts,const char host[],const char label[],int x,int y,int m,int n,PetscInt howoften,TSMonitorLGCtxNetwork *ctx)
     27: {
     28:   PetscDraw      draw;
     29:   MPI_Comm       comm;
     30:   DM             dm;
     31:   PetscInt       i,Start,End,e,nvar;

     33:   TSGetDM(ts,&dm);
     34:   PetscObjectGetComm((PetscObject)ts,&comm);
     35:   PetscNew(ctx);
     36:   i = 0;
     37:   /* loop over edges counting number of line graphs needed */
     38:   DMNetworkGetEdgeRange(dm,&Start,&End);
     39:   for (e=Start; e<End; e++) {
     40:     DMNetworkGetComponent(dm,e,ALL_COMPONENTS,NULL,NULL,&nvar);
     41:     if (!nvar) continue;
     42:     i++;
     43:   }
     44:   /* loop over vertices */
     45:   DMNetworkGetVertexRange(dm,&Start,&End);
     46:   for (e=Start; e<End; e++) {
     47:     DMNetworkGetComponent(dm,e,ALL_COMPONENTS,NULL,NULL,&nvar);
     48:     if (!nvar) continue;
     49:     i++;
     50:   }
     51:   (*ctx)->nlg = i;
     52:   PetscMalloc1(i,&(*ctx)->lg);

     54:   i = 0;
     55:   /* loop over edges creating all needed line graphs*/
     56:   DMNetworkGetEdgeRange(dm,&Start,&End);
     57:   for (e=Start; e<End; e++) {
     58:     DMNetworkGetComponent(dm,e,ALL_COMPONENTS,NULL,NULL,&nvar);
     59:     if (!nvar) continue;
     60:     PetscDrawCreate(comm,host,label,x,y,m,n,&draw);
     61:     PetscDrawSetFromOptions(draw);
     62:     PetscDrawLGCreate(draw,nvar,&(*ctx)->lg[i]);
     63:     PetscDrawLGSetFromOptions((*ctx)->lg[i]);
     64:     PetscDrawDestroy(&draw);
     65:     i++;
     66:   }
     67:   /* loop over vertices */
     68:   DMNetworkGetVertexRange(dm,&Start,&End);
     69:   for (e=Start; e<End; e++) {
     70:     DMNetworkGetComponent(dm,e,ALL_COMPONENTS,NULL,NULL,&nvar);
     71:     if (!nvar) continue;
     72:     PetscDrawCreate(comm,host,label,x,y,m,n,&draw);
     73:     PetscDrawSetFromOptions(draw);
     74:     PetscDrawLGCreate(draw,nvar,&(*ctx)->lg[i]);
     75:     PetscDrawLGSetFromOptions((*ctx)->lg[i]);
     76:     PetscDrawDestroy(&draw);
     77:     i++;
     78:   }
     79:   PetscDrawDestroy(&draw);
     80:   (*ctx)->howoften = howoften;
     81:   return 0;
     82: }

     84: /*
     85:    TSMonitorLGCtxNetworkSolution - Monitors progress of the TS solvers for a DMNetwork solution with one window for each vertex and each edge

     87:    Collective on TS

     89:    Input Parameters:
     90: +  ts - the TS context
     91: .  step - current time-step
     92: .  ptime - current time
     93: .  u - current solution
     94: -  dctx - the TSMonitorLGCtxNetwork object that contains all the options for the monitoring, this is created with TSMonitorLGCtxCreateNetwork()

     96:    Options Database:
     97: .   -ts_monitor_lg_solution_variables

     99:    Level: intermediate

    101:    Notes:
    102:     Each process in a parallel run displays its component solutions in a separate window

    104: */
    105: PetscErrorCode  TSMonitorLGCtxNetworkSolution(TS ts,PetscInt step,PetscReal ptime,Vec u,void *dctx)
    106: {
    107:   TSMonitorLGCtxNetwork ctx = (TSMonitorLGCtxNetwork)dctx;
    108:   const PetscScalar     *xv;
    109:   PetscScalar           *yv;
    110:   PetscInt              i,v,Start,End,offset,nvar,e;
    111:   TSConvergedReason     reason;
    112:   DM                    dm;
    113:   Vec                   uv;

    115:   if (step < 0) return 0; /* -1 indicates interpolated solution */
    116:   if (!step) {
    117:     PetscDrawAxis axis;

    119:     for (i=0; i<ctx->nlg; i++) {
    120:       PetscDrawLGGetAxis(ctx->lg[i],&axis);
    121:       PetscDrawAxisSetLabels(axis,"Solution as function of time","Time","Solution");
    122:       PetscDrawLGReset(ctx->lg[i]);
    123:     }
    124:   }

    126:   if (ctx->semilogy) {
    127:     PetscInt n,j;

    129:     VecDuplicate(u,&uv);
    130:     VecCopy(u,uv);
    131:     VecGetArray(uv,&yv);
    132:     VecGetLocalSize(uv,&n);
    133:     for (j=0; j<n; j++) {
    134:       if (PetscRealPart(yv[j]) <= 0.0) yv[j] = -12;
    135:       else yv[j] = PetscLog10Real(PetscRealPart(yv[j]));
    136:     }
    137:     xv = yv;
    138:   } else {
    139:     VecGetArrayRead(u,&xv);
    140:   }
    141:   /* iterate over edges */
    142:   TSGetDM(ts,&dm);
    143:   i = 0;
    144:   DMNetworkGetEdgeRange(dm,&Start,&End);
    145:   for (e=Start; e<End; e++) {
    146:     DMNetworkGetComponent(dm,e,ALL_COMPONENTS,NULL,NULL,&nvar);
    147:     if (!nvar) continue;

    149:     DMNetworkGetLocalVecOffset(dm,e,ALL_COMPONENTS,&offset);
    150:     PetscDrawLGAddCommonPoint(ctx->lg[i],ptime,(const PetscReal*)(xv+offset));
    151:     i++;
    152:   }

    154:   /* iterate over vertices */
    155:   DMNetworkGetVertexRange(dm,&Start,&End);
    156:   for (v=Start; v<End; v++) {
    157:     DMNetworkGetComponent(dm,v,ALL_COMPONENTS,NULL,NULL,&nvar);
    158:     if (!nvar) continue;

    160:     DMNetworkGetLocalVecOffset(dm,v,ALL_COMPONENTS,&offset);
    161:     PetscDrawLGAddCommonPoint(ctx->lg[i],ptime,(const PetscReal*)(xv+offset));
    162:     i++;
    163:   }
    164:   if (ctx->semilogy) {
    165:     VecRestoreArray(uv,&yv);
    166:     VecDestroy(&uv);
    167:   } else {
    168:     VecRestoreArrayRead(u,&xv);
    169:   }

    171:   TSGetConvergedReason(ts,&reason);
    172:   if (((ctx->howoften > 0) && (!(step % ctx->howoften))) || ((ctx->howoften == -1) && reason)) {
    173:     for (i=0; i<ctx->nlg; i++) {
    174:       PetscDrawLGDraw(ctx->lg[i]);
    175:       PetscDrawLGSave(ctx->lg[i]);
    176:     }
    177:   }
    178:   return 0;
    179: }