Date: 2026-03-31T05:46:29+00:00

Actual source code: adios.c

      1: #include <petsc/private/viewerimpl.h>
      2: #include <adios.h>
      3: #include <adios_read.h>

      5: #include <petsc/private/vieweradiosimpl.h>

      7: static PetscErrorCode PetscViewerSetFromOptions_ADIOS(PetscViewer v, PetscOptionItems PetscOptionsObject)
      8: {
      9:   PetscFunctionBegin;
     10:   PetscOptionsHeadBegin(PetscOptionsObject, "ADIOS PetscViewer Options");
     11:   PetscOptionsHeadEnd();
     12:   PetscFunctionReturn(PETSC_SUCCESS);
     13: }

     15: static PetscErrorCode PetscViewerFileClose_ADIOS(PetscViewer viewer)
     16: {
     17:   PetscViewer_ADIOS *adios = (PetscViewer_ADIOS *)viewer->data;

     19:   PetscFunctionBegin;
     20:   switch (adios->btype) {
     21:   case FILE_MODE_READ:
     22:     PetscCallExternal(adios_read_close, adios->adios_fp);
     23:     break;
     24:   case FILE_MODE_WRITE:
     25:     PetscCallExternal(adios_close, adios->adios_handle);
     26:     break;
     27:   default:
     28:     break;
     29:   }
     30:   PetscCall(PetscFree(adios->filename));
     31:   PetscFunctionReturn(PETSC_SUCCESS);
     32: }

     34: static PetscErrorCode PetscViewerDestroy_ADIOS(PetscViewer viewer)
     35: {
     36:   PetscViewer_ADIOS *adios = (PetscViewer_ADIOS *)viewer->data;

     38:   PetscFunctionBegin;
     39:   PetscCall(PetscViewerFileClose_ADIOS(viewer));
     40:   PetscCall(PetscFree(adios));
     41:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileSetName_C", NULL));
     42:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileGetName_C", NULL));
     43:   PetscCall(PetscObjectComposeFunction((PetscObject)viewer, "PetscViewerFileSetMode_C", NULL));
     44:   PetscFunctionReturn(PETSC_SUCCESS);
     45: }

     47: static PetscErrorCode PetscViewerFileSetMode_ADIOS(PetscViewer viewer, PetscFileMode type)
     48: {
     49:   PetscViewer_ADIOS *adios = (PetscViewer_ADIOS *)viewer->data;

     51:   PetscFunctionBegin;
     52:   adios->btype = type;
     53:   PetscFunctionReturn(PETSC_SUCCESS);
     54: }

     56: static PetscErrorCode PetscViewerFileSetName_ADIOS(PetscViewer viewer, const char name[])
     57: {
     58:   PetscViewer_ADIOS *adios = (PetscViewer_ADIOS *)viewer->data;

     60:   PetscFunctionBegin;
     61:   PetscCall(PetscFree(adios->filename));
     62:   PetscCall(PetscStrallocpy(name, &adios->filename));
     63:   /* Create or open the file collectively */
     64:   switch (adios->btype) {
     65:   case FILE_MODE_READ:
     66:     adios->adios_fp = adios_read_open_file(adios->filename, ADIOS_READ_METHOD_BP, PetscObjectComm((PetscObject)viewer));
     67:     break;
     68:   case FILE_MODE_WRITE:
     69:     adios_open(&adios->adios_handle, "PETSc", adios->filename, "w", PetscObjectComm((PetscObject)viewer));
     70:     break;
     71:   case FILE_MODE_UNDEFINED:
     72:     SETERRQ(PetscObjectComm((PetscObject)viewer), PETSC_ERR_ORDER, "Must call PetscViewerFileSetMode() before PetscViewerFileSetName()");
     73:   default:
     74:     SETERRQ(PetscObjectComm((PetscObject)viewer), PETSC_ERR_SUP, "Unsupported file mode %s", PetscFileModes[adios->btype]);
     75:   }
     76:   PetscFunctionReturn(PETSC_SUCCESS);
     77: }

     79: static PetscErrorCode PetscViewerFileGetName_ADIOS(PetscViewer viewer, const char **name)
     80: {
     81:   PetscViewer_ADIOS *vadios = (PetscViewer_ADIOS *)viewer->data;

     83:   PetscFunctionBegin;
     84:   *name = vadios->filename;
     85:   PetscFunctionReturn(PETSC_SUCCESS);
     86: }

     88: /*MC
     89:    PETSCVIEWERADIOS - A viewer that writes to an ADIOS file

     91:   Level: beginner

     93: .seealso: `PetscViewerADIOSOpen()`, `PetscViewerStringSPrintf()`, `PetscViewerSocketOpen()`, `PetscViewerDrawOpen()`, `PETSCVIEWERSOCKET`,
     94:           `PetscViewerCreate()`, `PetscViewerASCIIOpen()`, `PetscViewerBinaryOpen()`, `PETSCVIEWERBINARY`, `PETSCVIEWERDRAW`, `PETSCVIEWERSTRING`,
     95:           `PetscViewerMatlabOpen()`, `VecView()`, `DMView()`, `PetscViewerMatlabPutArray()`, `PETSCVIEWERASCII`, `PETSCVIEWERMATLAB`,
     96:           `PetscViewerFileSetName()`, `PetscViewerFileSetMode()`, `PetscViewerFormat`, `PetscViewerType`, `PetscViewerSetType()`
     97: M*/

     99: PETSC_EXTERN PetscErrorCode PetscViewerCreate_ADIOS(PetscViewer v)
    100: {
    101:   PetscViewer_ADIOS *adios;

    103:   PetscFunctionBegin;
    104:   PetscCall(PetscNew(&adios));

    106:   v->data                = (void *)adios;
    107:   v->ops->destroy        = PetscViewerDestroy_ADIOS;
    108:   v->ops->setfromoptions = PetscViewerSetFromOptions_ADIOS;
    109:   v->ops->flush          = NULL;
    110:   adios->btype           = FILE_MODE_UNDEFINED;
    111:   adios->filename        = NULL;
    112:   adios->timestep        = -1;

    114:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileSetName_C", PetscViewerFileSetName_ADIOS));
    115:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileGetName_C", PetscViewerFileGetName_ADIOS));
    116:   PetscCall(PetscObjectComposeFunction((PetscObject)v, "PetscViewerFileSetMode_C", PetscViewerFileSetMode_ADIOS));
    117:   PetscFunctionReturn(PETSC_SUCCESS);
    118: }

    120: /*@C
    121:   PetscViewerADIOSOpen - Opens a file for ADIOS input/output.

    123:   Collective

    125:   Input Parameters:
    126: + comm - MPI communicator
    127: . name - name of file
    128: - type - type of file
    129: .vb
    130:     FILE_MODE_WRITE - create new file for binary output
    131:     FILE_MODE_READ - open existing file for binary input
    132:     FILE_MODE_APPEND - open existing file for binary output
    133: .ve

    135:   Output Parameter:
    136: . adiosv - `PetscViewer` for ADIOS input/output to use with the specified file

    138:   Level: beginner

    140:   Note:
    141:   This `PetscViewer` should be destroyed with `PetscViewerDestroy()`.

    143: .seealso: `PetscViewerASCIIOpen()`, `PetscViewerPushFormat()`, `PetscViewerDestroy()`, `PetscViewerHDF5Open()`,
    144:           `VecView()`, `MatView()`, `VecLoad()`, `PetscViewerSetType()`, `PetscViewerFileSetMode()`, `PetscViewerFileSetName()`,
    145:           `MatLoad()`, `PetscFileMode`, `PetscViewer`
    146: @*/
    147: PetscErrorCode PetscViewerADIOSOpen(MPI_Comm comm, const char name[], PetscFileMode type, PetscViewer *adiosv)
    148: {
    149:   PetscFunctionBegin;
    150:   PetscCall(PetscViewerCreate(comm, adiosv));
    151:   PetscCall(PetscViewerSetType(*adiosv, PETSCVIEWERADIOS));
    152:   PetscCall(PetscViewerFileSetMode(*adiosv, type));
    153:   PetscCall(PetscViewerFileSetName(*adiosv, name));
    154:   PetscFunctionReturn(PETSC_SUCCESS);
    155: }