Date: 2016-03-29T14:58:45+00:00

Actual source code: pepmon.c
slepc-3.6.3 2016-03-29
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      1: /*
      2:       PEP routines related to monitors.

      4:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      5:    SLEPc - Scalable Library for Eigenvalue Problem Computations
      6:    Copyright (c) 2002-2015, 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/pepimpl.h>      /*I "slepcpep.h" I*/
     25: #include <petscdraw.h>

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

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

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

     50:    Logically Collective on PEP

     52:    Input Parameters:
     53: +  pep     - eigensolver context obtained from PEPCreate()
     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 (PEP pep, int its, int nconv, PetscScalar *eigr, PetscScalar *eigi, PetscReal* errest, int nest, void *mctx)

     62: +  pep    - polynomial eigensolver context obtained from PEPCreate()
     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 PEPMonitorSet()

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

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

     89:    Level: intermediate

     91: .seealso: PEPMonitorFirst(), PEPMonitorAll(), PEPMonitorCancel()
     92: @*/
     93: PetscErrorCode PEPMonitorSet(PEP pep,PetscErrorCode (*monitor)(PEP,PetscInt,PetscInt,PetscScalar*,PetscScalar*,PetscReal*,PetscInt,void*),void *mctx,PetscErrorCode (*monitordestroy)(void**))
     94: {
     97:   if (pep->numbermonitors >= MAXPEPMONITORS) SETERRQ(PetscObjectComm((PetscObject)pep),PETSC_ERR_ARG_OUTOFRANGE,"Too many PEP monitors set");
     98:   pep->monitor[pep->numbermonitors]           = monitor;
     99:   pep->monitorcontext[pep->numbermonitors]    = (void*)mctx;
    100:   pep->monitordestroy[pep->numbermonitors++]  = monitordestroy;
    101:   return(0);
    102: }

    106: /*@
    107:    PEPMonitorCancel - Clears all monitors for a PEP object.

    109:    Logically Collective on PEP

    111:    Input Parameters:
    112: .  pep - eigensolver context obtained from PEPCreate()

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

    119:    Level: intermediate

    121: .seealso: PEPMonitorSet()
    122: @*/
    123: PetscErrorCode PEPMonitorCancel(PEP pep)
    124: {
    126:   PetscInt       i;

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

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

    145:    Not Collective

    147:    Input Parameter:
    148: .  pep - eigensolver context obtained from PEPCreate()

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

    153:    Level: intermediate

    155: .seealso: PEPMonitorSet(), PEPDefaultMonitor()
    156: @*/
    157: PetscErrorCode PEPGetMonitorContext(PEP pep,void **ctx)
    158: {
    161:   *ctx = pep->monitorcontext[0];
    162:   return(0);
    163: }

    167: /*
    168:    Helper function to compute eigenvalue that must be viewed in monitor
    169:  */
    170: static PetscErrorCode PEPMonitorGetTrueEig(PEP pep,PetscScalar *er,PetscScalar *ei)
    171: {
    173:   PetscBool      flg;

    176:   STGetTransform(pep->st,&flg);
    177:   if (flg) {
    178:     *er *= pep->sfactor; *ei *= pep->sfactor;
    179:   }
    180:   STBackTransform(pep->st,1,er,ei);
    181:   if (!flg) {
    182:     *er *= pep->sfactor; *ei *= pep->sfactor;
    183:   }
    184:   return(0);
    185: }

    189: /*@C
    190:    PEPMonitorAll - Print the current approximate values and
    191:    error estimates at each iteration of the polynomial eigensolver.

    193:    Collective on PEP

    195:    Input Parameters:
    196: +  pep    - polynomial eigensolver context
    197: .  its    - iteration number
    198: .  nconv  - number of converged eigenpairs so far
    199: .  eigr   - real part of the eigenvalues
    200: .  eigi   - imaginary part of the eigenvalues
    201: .  errest - error estimates
    202: .  nest   - number of error estimates to display
    203: -  monctx - monitor context (contains viewer, can be NULL)

    205:    Level: intermediate

    207: .seealso: PEPMonitorSet(), PEPMonitorFirst(), PEPMonitorConverged()
    208: @*/
    209: PetscErrorCode PEPMonitorAll(PEP pep,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *monctx)
    210: {
    212:   PetscInt       i;
    213:   PetscScalar    er,ei;
    214:   PetscViewer    viewer = monctx? (PetscViewer)monctx: PETSC_VIEWER_STDOUT_(PetscObjectComm((PetscObject)pep));

    217:   if (its) {
    218:     PetscViewerASCIIAddTab(viewer,((PetscObject)pep)->tablevel);
    219:     PetscViewerASCIIPrintf(viewer,"%3D PEP nconv=%D Values (Errors)",its,nconv);
    220:     for (i=0;i<nest;i++) {
    221:       er = eigr[i]; ei = eigi[i];
    222:       PEPMonitorGetTrueEig(pep,&er,&ei);
    223: #if defined(PETSC_USE_COMPLEX)
    224:       PetscViewerASCIIPrintf(viewer," %g%+gi",(double)PetscRealPart(er),(double)PetscImaginaryPart(er));
    225: #else
    226:       PetscViewerASCIIPrintf(viewer," %g",(double)er);
    227:       if (eigi[i]!=0.0) { PetscViewerASCIIPrintf(viewer,"%+gi",(double)ei); }
    228: #endif
    229:       PetscViewerASCIIPrintf(viewer," (%10.8e)",(double)errest[i]);
    230:     }
    231:     PetscViewerASCIIPrintf(viewer,"\n");
    232:     PetscViewerASCIISubtractTab(viewer,((PetscObject)pep)->tablevel);
    233:   }
    234:   return(0);
    235: }

    239: /*@C
    240:    PEPMonitorFirst - Print the first unconverged approximate value and
    241:    error estimate at each iteration of the polynomial eigensolver.

    243:    Collective on PEP

    245:    Input Parameters:
    246: +  pep    - polynomial eigensolver context
    247: .  its    - iteration number
    248: .  nconv  - number of converged eigenpairs so far
    249: .  eigr   - real part of the eigenvalues
    250: .  eigi   - imaginary part of the eigenvalues
    251: .  errest - error estimates
    252: .  nest   - number of error estimates to display
    253: -  monctx - monitor context (contains viewer, can be NULL)

    255:    Level: intermediate

    257: .seealso: PEPMonitorSet(), PEPMonitorAll(), PEPMonitorConverged()
    258: @*/
    259: PetscErrorCode PEPMonitorFirst(PEP pep,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *monctx)
    260: {
    262:   PetscScalar    er,ei;
    263:   PetscViewer    viewer = monctx? (PetscViewer)monctx: PETSC_VIEWER_STDOUT_(PetscObjectComm((PetscObject)pep));

    266:   if (its && nconv<nest) {
    267:     PetscViewerASCIIAddTab(viewer,((PetscObject)pep)->tablevel);
    268:     PetscViewerASCIIPrintf(viewer,"%3D PEP nconv=%D first unconverged value (error)",its,nconv);
    269:     er = eigr[nconv]; ei = eigi[nconv];
    270:     PEPMonitorGetTrueEig(pep,&er,&ei);
    271: #if defined(PETSC_USE_COMPLEX)
    272:     PetscViewerASCIIPrintf(viewer," %g%+gi",(double)PetscRealPart(er),(double)PetscImaginaryPart(er));
    273: #else
    274:     PetscViewerASCIIPrintf(viewer," %g",(double)er);
    275:     if (eigi[nconv]!=0.0) { PetscViewerASCIIPrintf(viewer,"%+gi",(double)ei); }
    276: #endif
    277:     PetscViewerASCIIPrintf(viewer," (%10.8e)\n",(double)errest[nconv]);
    278:     PetscViewerASCIISubtractTab(viewer,((PetscObject)pep)->tablevel);
    279:   }
    280:   return(0);
    281: }

    285: /*@C
    286:    PEPMonitorConverged - Print the approximate values and
    287:    error estimates as they converge.

    289:    Collective on PEP

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

    301:    Level: intermediate

    303:    Note:
    304:    The monitor context must contain a struct with a PetscViewer and a
    305:    PetscInt. In Fortran, pass a PETSC_NULL_OBJECT.

    307: .seealso: PEPMonitorSet(), PEPMonitorFirst(), PEPMonitorAll()
    308: @*/
    309: PetscErrorCode PEPMonitorConverged(PEP pep,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *monctx)
    310: {
    311:   PetscErrorCode   ierr;
    312:   PetscInt         i;
    313:   PetscScalar      er,ei;
    314:   PetscViewer      viewer;
    315:   SlepcConvMonitor ctx = (SlepcConvMonitor)monctx;

    318:   if (!monctx) SETERRQ(PetscObjectComm((PetscObject)pep),PETSC_ERR_ARG_WRONG,"Must provide a context for PEPMonitorConverged");
    319:   if (!its) {
    320:     ctx->oldnconv = 0;
    321:   } else {
    322:     viewer = ctx->viewer? ctx->viewer: PETSC_VIEWER_STDOUT_(PetscObjectComm((PetscObject)pep));
    323:     for (i=ctx->oldnconv;i<nconv;i++) {
    324:       PetscViewerASCIIAddTab(viewer,((PetscObject)pep)->tablevel);
    325:       PetscViewerASCIIPrintf(viewer,"%3D PEP converged value (error) #%D",its,i);
    326:       er = eigr[i]; ei = eigi[i];
    327:       PEPMonitorGetTrueEig(pep,&er,&ei);
    328: #if defined(PETSC_USE_COMPLEX)
    329:       PetscViewerASCIIPrintf(viewer," %g%+gi",(double)PetscRealPart(er),(double)PetscImaginaryPart(er));
    330: #else
    331:       PetscViewerASCIIPrintf(viewer," %g",(double)er);
    332:       if (eigi[i]!=0.0) { PetscViewerASCIIPrintf(viewer,"%+gi",(double)ei); }
    333: #endif
    334:       PetscViewerASCIIPrintf(viewer," (%10.8e)\n",(double)errest[i]);
    335:       PetscViewerASCIISubtractTab(viewer,((PetscObject)pep)->tablevel);
    336:     }
    337:     ctx->oldnconv = nconv;
    338:   }
    339:   return(0);
    340: }

    344: PetscErrorCode PEPMonitorLG(PEP pep,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *monctx)
    345: {
    346:   PetscViewer    viewer = (PetscViewer)monctx;
    347:   PetscDraw      draw;
    348:   PetscDrawLG    lg;
    350:   PetscReal      x,y;

    353:   if (!viewer) viewer = PETSC_VIEWER_DRAW_(PetscObjectComm((PetscObject)pep));
    354:   PetscViewerDrawGetDraw(viewer,0,&draw);
    355:   PetscViewerDrawGetDrawLG(viewer,0,&lg);
    356:   if (!its) {
    357:     PetscDrawSetTitle(draw,"Error estimates");
    358:     PetscDrawSetDoubleBuffer(draw);
    359:     PetscDrawLGSetDimension(lg,1);
    360:     PetscDrawLGReset(lg);
    361:     PetscDrawLGSetLimits(lg,0,1.0,log10(pep->tol)-2,0.0);
    362:   }

    364:   x = (PetscReal)its;
    365:   if (errest[nconv] > 0.0) y = log10(errest[nconv]); else y = 0.0;
    366:   PetscDrawLGAddPoint(lg,&x,&y);

    368:   PetscDrawLGDraw(lg);
    369:   return(0);
    370: }

    374: PetscErrorCode PEPMonitorLGAll(PEP pep,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *monctx)
    375: {
    376:   PetscViewer    viewer = (PetscViewer)monctx;
    377:   PetscDraw      draw;
    378:   PetscDrawLG    lg;
    380:   PetscReal      *x,*y;
    381:   PetscInt       i,n = PetscMin(pep->nev,255);

    384:   if (!viewer) viewer = PETSC_VIEWER_DRAW_(PetscObjectComm((PetscObject)pep));
    385:   PetscViewerDrawGetDraw(viewer,0,&draw);
    386:   PetscViewerDrawGetDrawLG(viewer,0,&lg);
    387:   if (!its) {
    388:     PetscDrawSetTitle(draw,"Error estimates");
    389:     PetscDrawSetDoubleBuffer(draw);
    390:     PetscDrawLGSetDimension(lg,n);
    391:     PetscDrawLGReset(lg);
    392:     PetscDrawLGSetLimits(lg,0,1.0,log10(pep->tol)-2,0.0);
    393:   }

    395:   PetscMalloc2(n,&x,n,&y);
    396:   for (i=0;i<n;i++) {
    397:     x[i] = (PetscReal)its;
    398:     if (i < nest && errest[i] > 0.0) y[i] = log10(errest[i]);
    399:     else y[i] = 0.0;
    400:   }
    401:   PetscDrawLGAddPoint(lg,x,y);

    403:   PetscDrawLGDraw(lg);
    404:   PetscFree2(x,y);
    405:   return(0);
    406: }