Date: 2017-05-17T08:25:34+00:00

Actual source code: epsmon.c
slepc-3.7.4 2017-05-17
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      1: /*
      2:       EPS routines related to monitors.

      4:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      5:    SLEPc - Scalable Library for Eigenvalue Problem Computations
      6:    Copyright (c) 2002-2016, Universitat Politecnica de Valencia, Spain

      8:    This file is part of SLEPc.

     10:    SLEPc is free software: you can redistribute it and/or modify it under  the
     11:    terms of version 3 of the GNU Lesser General Public License as published by
     12:    the Free Software Foundation.

     14:    SLEPc  is  distributed in the hope that it will be useful, but WITHOUT  ANY
     15:    WARRANTY;  without even the implied warranty of MERCHANTABILITY or  FITNESS
     16:    FOR  A  PARTICULAR PURPOSE. See the GNU Lesser General Public  License  for
     17:    more details.

     19:    You  should have received a copy of the GNU Lesser General  Public  License
     20:    along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
     21:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     22: */

     24: #include <slepc/private/epsimpl.h>   /*I "slepceps.h" I*/
     25: #include <petscdraw.h>

     29: /*
     30:    Runs the user provided monitor routines, if any.
     31: */
     32: PetscErrorCode EPSMonitor(EPS eps,PetscInt it,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest)
     33: {
     35:   PetscInt       i,n = eps->numbermonitors;

     38:   for (i=0;i<n;i++) {
     39:     (*eps->monitor[i])(eps,it,nconv,eigr,eigi,errest,nest,eps->monitorcontext[i]);
     40:   }
     41:   return(0);
     42: }

     46: /*@C
     47:    EPSMonitorSet - Sets an ADDITIONAL function to be called at every
     48:    iteration to monitor the error estimates for each requested eigenpair.

     50:    Logically Collective on EPS

     52:    Input Parameters:
     53: +  eps     - eigensolver context obtained from EPSCreate()
     54: .  monitor - pointer to function (if this is NULL, it turns off monitoring)
     55: .  mctx    - [optional] context for private data for the
     56:              monitor routine (use NULL if no context is desired)
     57: -  monitordestroy - [optional] routine that frees monitor context (may be NULL)

     59:    Calling Sequence of monitor:
     60: $   monitor(EPS eps,int its,int nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal* errest,int nest,void *mctx)

     62: +  eps    - eigensolver context obtained from EPSCreate()
     63: .  its    - iteration number
     64: .  nconv  - number of converged eigenpairs
     65: .  eigr   - real part of the eigenvalues
     66: .  eigi   - imaginary part of the eigenvalues
     67: .  errest - relative error estimates for each eigenpair
     68: .  nest   - number of error estimates
     69: -  mctx   - optional monitoring context, as set by EPSMonitorSet()

     71:    Options Database Keys:
     72: +    -eps_monitor        - print only the first error estimate
     73: .    -eps_monitor_all    - print error estimates at each iteration
     74: .    -eps_monitor_conv   - print the eigenvalue approximations only when
     75:       convergence has been reached
     76: .    -eps_monitor_lg     - sets line graph monitor for the first unconverged
     77:       approximate eigenvalue
     78: .    -eps_monitor_lg_all - sets line graph monitor for all unconverged
     79:       approximate eigenvalues
     80: -    -eps_monitor_cancel - cancels all monitors that have been hardwired into
     81:       a code by calls to EPSMonitorSet(), but does not cancel those set via
     82:       the options database.

     84:    Notes:
     85:    Several different monitoring routines may be set by calling
     86:    EPSMonitorSet() multiple times; all will be called in the
     87:    order in which they were set.

     89:    Level: intermediate

     91: .seealso: EPSMonitorFirst(), EPSMonitorAll(), EPSMonitorCancel()
     92: @*/
     93: PetscErrorCode EPSMonitorSet(EPS eps,PetscErrorCode (*monitor)(EPS,PetscInt,PetscInt,PetscScalar*,PetscScalar*,PetscReal*,PetscInt,void*),void *mctx,PetscErrorCode (*monitordestroy)(void**))
     94: {
     97:   if (eps->numbermonitors >= MAXEPSMONITORS) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Too many EPS monitors set");
     98:   eps->monitor[eps->numbermonitors]           = monitor;
     99:   eps->monitorcontext[eps->numbermonitors]    = (void*)mctx;
    100:   eps->monitordestroy[eps->numbermonitors++]  = monitordestroy;
    101:   return(0);
    102: }

    106: /*@
    107:    EPSMonitorCancel - Clears all monitors for an EPS object.

    109:    Logically Collective on EPS

    111:    Input Parameters:
    112: .  eps - eigensolver context obtained from EPSCreate()

    114:    Options Database Key:
    115: .    -eps_monitor_cancel - Cancels all monitors that have been hardwired
    116:       into a code by calls to EPSMonitorSet(),
    117:       but does not cancel those set via the options database.

    119:    Level: intermediate

    121: .seealso: EPSMonitorSet()
    122: @*/
    123: PetscErrorCode EPSMonitorCancel(EPS eps)
    124: {
    126:   PetscInt       i;

    130:   for (i=0; i<eps->numbermonitors; i++) {
    131:     if (eps->monitordestroy[i]) {
    132:       (*eps->monitordestroy[i])(&eps->monitorcontext[i]);
    133:     }
    134:   }
    135:   eps->numbermonitors = 0;
    136:   return(0);
    137: }

    141: /*@C
    142:    EPSGetMonitorContext - Gets the monitor context, as set by
    143:    EPSMonitorSet() for the FIRST monitor only.

    145:    Not Collective

    147:    Input Parameter:
    148: .  eps - eigensolver context obtained from EPSCreate()

    150:    Output Parameter:
    151: .  ctx - monitor context

    153:    Level: intermediate

    155: .seealso: EPSMonitorSet()
    156: @*/
    157: PetscErrorCode EPSGetMonitorContext(EPS eps,void **ctx)
    158: {
    161:   *ctx = eps->monitorcontext[0];
    162:   return(0);
    163: }

    167: /*@C
    168:    EPSMonitorAll - Print the current approximate values and
    169:    error estimates at each iteration of the eigensolver.

    171:    Collective on EPS

    173:    Input Parameters:
    174: +  eps    - eigensolver context
    175: .  its    - iteration number
    176: .  nconv  - number of converged eigenpairs so far
    177: .  eigr   - real part of the eigenvalues
    178: .  eigi   - imaginary part of the eigenvalues
    179: .  errest - error estimates
    180: .  nest   - number of error estimates to display
    181: -  vf     - viewer and format for monitoring

    183:    Level: intermediate

    185: .seealso: EPSMonitorSet(), EPSMonitorFirst(), EPSMonitorConverged()
    186: @*/
    187: PetscErrorCode EPSMonitorAll(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,PetscViewerAndFormat *vf)
    188: {
    190:   PetscInt       i;
    191:   PetscScalar    er,ei;
    192:   PetscViewer    viewer;

    197:   viewer = vf->viewer;
    199:   PetscViewerPushFormat(viewer,vf->format);
    200:   PetscViewerASCIIAddTab(viewer,((PetscObject)eps)->tablevel);
    201:   if (its==1 && ((PetscObject)eps)->prefix) {
    202:     PetscViewerASCIIPrintf(viewer,"  Eigenvalue approximations and residual norms for %s solve.\n",((PetscObject)eps)->prefix);
    203:   }
    204:   PetscViewerASCIIPrintf(viewer,"%3D EPS nconv=%D Values (Errors)",its,nconv);
    205:   PetscViewerASCIIUseTabs(viewer,PETSC_FALSE);
    206:   for (i=0;i<nest;i++) {
    207:     er = eigr[i]; ei = eigi[i];
    208:     STBackTransform(eps->st,1,&er,&ei);
    209: #if defined(PETSC_USE_COMPLEX)
    210:     PetscViewerASCIIPrintf(viewer," %g%+gi",(double)PetscRealPart(er),(double)PetscImaginaryPart(er));
    211: #else
    212:     PetscViewerASCIIPrintf(viewer," %g",(double)er);
    213:     if (ei!=0.0) { PetscViewerASCIIPrintf(viewer,"%+gi",(double)ei); }
    214: #endif
    215:     PetscViewerASCIIPrintf(viewer," (%10.8e)",(double)errest[i]);
    216:   }
    217:   PetscViewerASCIIPrintf(viewer,"\n");
    218:   PetscViewerASCIIUseTabs(viewer,PETSC_TRUE);
    219:   PetscViewerASCIISubtractTab(viewer,((PetscObject)eps)->tablevel);
    220:   PetscViewerPopFormat(viewer);
    221:   return(0);
    222: }

    226: /*@C
    227:    EPSMonitorFirst - Print the first approximate value and
    228:    error estimate at each iteration of the eigensolver.

    230:    Collective on EPS

    232:    Input Parameters:
    233: +  eps    - eigensolver context
    234: .  its    - iteration number
    235: .  nconv  - number of converged eigenpairs so far
    236: .  eigr   - real part of the eigenvalues
    237: .  eigi   - imaginary part of the eigenvalues
    238: .  errest - error estimates
    239: .  nest   - number of error estimates to display
    240: -  vf     - viewer and format for monitoring

    242:    Level: intermediate

    244: .seealso: EPSMonitorSet(), EPSMonitorAll(), EPSMonitorConverged()
    245: @*/
    246: PetscErrorCode EPSMonitorFirst(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,PetscViewerAndFormat *vf)
    247: {
    249:   PetscScalar    er,ei;
    250:   PetscViewer    viewer;

    255:   viewer = vf->viewer;
    257:   if (its==1 && ((PetscObject)eps)->prefix) {
    258:     PetscViewerASCIIPrintf(viewer,"  Eigenvalue approximations and residual norms for %s solve.\n",((PetscObject)eps)->prefix);
    259:   }
    260:   if (nconv<nest) {
    261:     PetscViewerPushFormat(viewer,vf->format);
    262:     PetscViewerASCIIAddTab(viewer,((PetscObject)eps)->tablevel);
    263:     PetscViewerASCIIPrintf(viewer,"%3D EPS nconv=%D first unconverged value (error)",its,nconv);
    264:     PetscViewerASCIIUseTabs(viewer,PETSC_FALSE);
    265:     er = eigr[nconv]; ei = eigi[nconv];
    266:     STBackTransform(eps->st,1,&er,&ei);
    267: #if defined(PETSC_USE_COMPLEX)
    268:     PetscViewerASCIIPrintf(viewer," %g%+gi",(double)PetscRealPart(er),(double)PetscImaginaryPart(er));
    269: #else
    270:     PetscViewerASCIIPrintf(viewer," %g",(double)er);
    271:     if (ei!=0.0) { PetscViewerASCIIPrintf(viewer,"%+gi",(double)ei); }
    272: #endif
    273:     PetscViewerASCIIPrintf(viewer," (%10.8e)\n",(double)errest[nconv]);
    274:     PetscViewerASCIIUseTabs(viewer,PETSC_TRUE);
    275:     PetscViewerASCIISubtractTab(viewer,((PetscObject)eps)->tablevel);
    276:     PetscViewerPopFormat(viewer);
    277:   }
    278:   return(0);
    279: }

    283: /*@C
    284:    EPSMonitorConverged - Print the approximate values and
    285:    error estimates as they converge.

    287:    Collective on EPS

    289:    Input Parameters:
    290: +  eps    - eigensolver context
    291: .  its    - iteration number
    292: .  nconv  - number of converged eigenpairs so far
    293: .  eigr   - real part of the eigenvalues
    294: .  eigi   - imaginary part of the eigenvalues
    295: .  errest - error estimates
    296: .  nest   - number of error estimates to display
    297: -  ctx    - monitor context

    299:    Level: intermediate

    301: .seealso: EPSMonitorSet(), EPSMonitorFirst(), EPSMonitorAll()
    302: @*/
    303: PetscErrorCode EPSMonitorConverged(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,SlepcConvMonitor ctx)
    304: {
    306:   PetscInt       i;
    307:   PetscScalar    er,ei;
    308:   PetscViewer    viewer;

    313:   viewer = ctx->viewer;
    315:   if (its==1 && ((PetscObject)eps)->prefix) {
    316:     PetscViewerASCIIPrintf(viewer,"  Convergence history for %s solve.\n",((PetscObject)eps)->prefix);
    317:   }
    318:   if (its==1) ctx->oldnconv = 0;
    319:   if (ctx->oldnconv!=nconv) {
    320:     PetscViewerPushFormat(viewer,ctx->format);
    321:     PetscViewerASCIIAddTab(viewer,((PetscObject)eps)->tablevel);
    322:     for (i=ctx->oldnconv;i<nconv;i++) {
    323:       PetscViewerASCIIPrintf(viewer,"%3D EPS converged value (error) #%D",its,i);
    324:       PetscViewerASCIIUseTabs(viewer,PETSC_FALSE);
    325:       er = eigr[i]; ei = eigi[i];
    326:       STBackTransform(eps->st,1,&er,&ei);
    327: #if defined(PETSC_USE_COMPLEX)
    328:       PetscViewerASCIIPrintf(viewer," %g%+gi",(double)PetscRealPart(er),(double)PetscImaginaryPart(er));
    329: #else
    330:       PetscViewerASCIIPrintf(viewer," %g",(double)er);
    331:       if (ei!=0.0) { PetscViewerASCIIPrintf(viewer,"%+gi",(double)ei); }
    332: #endif
    333:       PetscViewerASCIIPrintf(viewer," (%10.8e)\n",(double)errest[i]);
    334:       PetscViewerASCIIUseTabs(viewer,PETSC_TRUE);
    335:     }
    336:     PetscViewerASCIISubtractTab(viewer,((PetscObject)eps)->tablevel);
    337:     PetscViewerPopFormat(viewer);
    338:     ctx->oldnconv = nconv;
    339:   }
    340:   return(0);
    341: }

    345: /*@C
    346:    EPSMonitorLGCreate - Creates a line graph context for use with
    347:    EPS to monitor convergence.

    349:    Collective on MPI_Comm

    351:    Input Parameters:
    352: +  comm - communicator context
    353: .  host - the X display to open, or null for the local machine
    354: .  label - the title to put in the title bar
    355: .  x, y - the screen coordinates of the upper left coordinate of
    356:           the window
    357: -  m, n - the screen width and height in pixels

    359:    Output Parameter:
    360: .  lgctx - the drawing context

    362:    Options Database Keys:
    363: +  -eps_monitor_lg - Sets line graph monitor for the first residual
    364: -  -eps_monitor_lg_all - Sets line graph monitor for all residuals

    366:    Notes:
    367:    Use PetscDrawLGDestroy() to destroy this line graph.

    369:    Level: intermediate

    371: .seealso: EPSMonitorSet()
    372: @*/
    373: PetscErrorCode EPSMonitorLGCreate(MPI_Comm comm,const char host[],const char label[],int x,int y,int m,int n,PetscDrawLG *lgctx)
    374: {
    375:   PetscDraw      draw;
    376:   PetscDrawLG    lg;

    380:   PetscDrawCreate(comm,host,label,x,y,m,n,&draw);
    381:   PetscDrawSetFromOptions(draw);
    382:   PetscDrawLGCreate(draw,1,&lg);
    383:   PetscDrawLGSetFromOptions(lg);
    384:   PetscDrawDestroy(&draw);
    385:   *lgctx = lg;
    386:   return(0);
    387: }

    391: PetscErrorCode EPSMonitorLG(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *ctx)
    392: {
    393:   PetscDrawLG    lg = (PetscDrawLG)ctx;
    394:   PetscReal      x,y;

    399:   if (its==1) {
    400:     PetscDrawLGReset(lg);
    401:     PetscDrawLGSetDimension(lg,1);
    402:     PetscDrawLGSetLimits(lg,1,1.0,PetscLog10Real(eps->tol)-2,0.0);
    403:   }
    404:   x = (PetscReal)its;
    405:   if (errest[nconv] > 0.0) y = PetscLog10Real(errest[nconv]);
    406:   else y = 0.0;
    407:   PetscDrawLGAddPoint(lg,&x,&y);
    408:   if (its <= 20 || !(its % 5) || eps->reason) {
    409:     PetscDrawLGDraw(lg);
    410:     PetscDrawLGSave(lg);
    411:   }
    412:   return(0);
    413: }

    417: PetscErrorCode EPSMonitorLGAll(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *ctx)
    418: {
    419:   PetscDrawLG    lg = (PetscDrawLG)ctx;
    420:   PetscInt       i,n = PetscMin(eps->nev,255);
    421:   PetscReal      *x,*y;

    426:   if (its==1) {
    427:     PetscDrawLGReset(lg);
    428:     PetscDrawLGSetDimension(lg,n);
    429:     PetscDrawLGSetLimits(lg,1,1.0,PetscLog10Real(eps->tol)-2,0.0);
    430:   }
    431:   PetscMalloc2(n,&x,n,&y);
    432:   for (i=0;i<n;i++) {
    433:     x[i] = (PetscReal)its;
    434:     if (i < nest && errest[i] > 0.0) y[i] = PetscLog10Real(errest[i]);
    435:     else y[i] = 0.0;
    436:   }
    437:   PetscDrawLGAddPoint(lg,x,y);
    438:   if (its <= 20 || !(its % 5) || eps->reason) {
    439:     PetscDrawLGDraw(lg);
    440:     PetscDrawLGSave(lg);
    441:   }
    442:   PetscFree2(x,y);
    443:   return(0);
    444: }