4 #include <AMReX_Config.H>
22 #include <type_traits>
48 explicit VisMF (std::string fafab_name);
124 FabReadLink(
int ranktoread,
int faindex, Long fileoffset,
const Box &b);
148 static std::ifstream *
OpenStream(
const std::string &fileName);
149 static void CloseStream(
const std::string &fileName,
bool forceClose =
false);
155 [[nodiscard]]
int nComp ()
const;
157 [[nodiscard]]
int nGrow ()
const;
160 [[nodiscard]]
int size ()
const;
164 [[nodiscard]] Real
min (
int fabIndex,
int nComp)
const;
166 [[nodiscard]] Real
min (
int nComp)
const;
168 [[nodiscard]] Real
max (
int fabIndex,
int nComp)
const;
170 [[nodiscard]] Real
max (
int nComp)
const;
177 [[nodiscard]]
const FArrayBox&
GetFab (
int fabIndex,
int compIndex)
const;
179 void clear (
int fabIndex,
int compIndex);
181 void clear (
int fabIndex);
192 const std::string& name,
194 bool set_ghost =
false);
197 bool valid_cells_only =
false);
199 bool valid_cells_only =
false);
209 const std::string & mf_name,
224 const std::string &name,
225 const char *faHeader =
nullptr,
227 int allow_empty_mf = 0);
230 static bool Exist (
const std::string &name);
237 static bool Check (
const std::string &name);
282 static std::string
DirName (
const std::string& filename);
283 static std::string
BaseName (
const std::string& filename);
290 const std::string& filename,
297 static Long
WriteHeader (
const std::string &mf_name,
304 const std::string &filePrefix,
317 const std::string &mf_name,
323 const std::string &mf_name,
327 bool is_rvalue,
bool valid_cells_only);
380 template <
typename FAB>
382 std::enable_if_t<std::is_same_v<FAB,IArrayBox>>
388 auto data_descriptor = FAB::getDataDescriptor();
389 int data_bytes = data_descriptor->numBytes();
391 bool useSparseFPP =
false;
393 std::set<int> procsWithData;
396 procsWithData.insert(i);
399 if (
static_cast<int>(procsWithData.size()) < nOutFiles) {
401 for (
auto i : procsWithData) {
402 procsWithDataVector.push_back(i);
406 std::string filePrefix = name +
"_D_";
416 const auto &fio = FAB::getFABio();
420 const FAB &fab = fa[mfi];
422 std::stringstream hss;
423 fio.write_header(hss, fab, fab.nComp());
424 auto hLength =
static_cast<std::streamoff
>(hss.tellp());
425 auto tstr = hss.str();
426 nfi.
Stream().write(tstr.c_str(), hLength);
429 auto const* fabdata = fab.dataPtr();
431 std::unique_ptr<FAB> hostfab;
432 if (fab.arena()->isManaged() || fab.arena()->isDevice()) {
433 hostfab = std::make_unique<FAB>(fab.box(), fab.nComp(),
The_Pinned_Arena());
435 fab.size()*
sizeof(
typename FAB::value_type));
437 fabdata = hostfab->dataPtr();
440 Long writeDataItems = fab.box().numPts() * fa.
nComp();
441 Long writeDataSize = writeDataItems * data_bytes;
442 nfi.
Stream().write((
char *) fabdata, writeDataSize);
453 std::string header_file_name = name +
"_H";
456 ofs.rdbuf()->pubsetbuf(io_buffer.
dataPtr(), io_buffer.
size());
457 ofs.open(header_file_name.c_str(), std::ios::out | std::ios::trunc);
462 ofs <<
"amrex::FabArray<" << FAB::getClassName() <<
"> v1.0\n";
463 ofs << fa.
nComp() <<
'\n';
474 std::map<int, Vector<int> > rankBoxOrder;
475 for (
int i = 0; i < nfabs; ++i) {
476 std::stringstream hss;
478 fio.write_header(hss, tmp, tmp.nComp());
480 fabBytes[i] =
static_cast<std::streamoff
>(hss.tellp()) + tmp.
size() * data_bytes;
481 rankBoxOrder[dm[i]].push_back(i);
489 fileNumbers.resize(nprocs);
490 std::iota(fileNumbers.begin(), fileNumbers.end(), 0);
492 fileNumbers.resize(nprocs);
493 for (
int i = 0; i < nprocs; ++i) {
501 for (
auto const& rv : fileNumbersWriteOrder) {
502 Long currentOffset = 0;
503 for (
auto rank : rv) {
504 auto rbo_it = rankBoxOrder.find(rank);
505 if (rbo_it != rankBoxOrder.end()) {
507 int whichFileNumber = fileNumbers[rank];
508 std::string
const& whichFileName =
510 for (
int i : index) {
511 fod[i].m_name = whichFileName;
512 fod[i].m_head = currentOffset;
513 currentOffset += fabBytes[i];
523 template <
typename FAB>
530 ifs.rdbuf()->pubsetbuf(io_buffer.
dataPtr(), io_buffer.
size());
531 ifs.open(fullname.c_str(), std::ios::in | std::ios::binary);
535 ifs.seekg(fod.
m_head, std::ios::beg);
557 template <
typename FAB>
559 std::enable_if_t<std::is_same_v<FAB,IArrayBox>>
570 std::string header_file_name = name +
"_H";
573 std::string header_file_string(header_file_chars.data());
574 std::stringstream ifs(header_file_string, std::istringstream::in);
576 std::string type, version;
577 ifs >> type >> version;
578 AMREX_ASSERT(type ==
"amrex::FabArray<amrex::IArrayBox>" ||
579 type ==
"amrex::FabArray<amrex::FArrayBox>");
598 int allreadsindex = 0;
599 std::map<std::string, int> filenames;
601 const int nboxes = fa.
size();
603 for (
int i = 0; i < nboxes; ++i) {
604 if (myproc == dm[i]) {
607 if (myproc == coordproc) {
608 std::string
const& fname = fod[i].m_name;
609 auto r =filenames.insert(std::make_pair(fname, allreadsindex));
619 if (myproc == coordproc) {
620 std::multiset<int> availablefiles;
623 const auto nfiles =
static_cast<int>(filenames.size());
624 for (
int i = 0; i < nfiles; ++i) {
625 for (
int j = 0; j < nopensperfile; ++j) {
626 availablefiles.insert(i);
629 allreads.resize(nfiles);
630 for (
int i = 0; i < nboxes; ++i) {
631 const auto whichproc = dm[i];
632 const auto iseekpos = fod[i].m_head;
633 std::string
const& fname = fod[i].m_name;
634 auto filenamesiter = filenames.find(fname);
635 if (filenamesiter != filenames.end()) {
636 const int fi = filenamesiter->second;
637 allreads[
fi][whichproc].insert(std::make_pair(iseekpos,i));
639 amrex::Error(
"Error in amrex::Read: filename not found "+fname);
643 int totalioreqs = nboxes;
646 std::deque<int> iopreads;
647 std::set<int> busyprocs;
648 while (totalioreqs > 0) {
649 auto afilesiter = availablefiles.begin();
650 while (afilesiter != availablefiles.end()) {
651 const int fi = *afilesiter;
652 if (allreads[
fi].empty()) {
653 availablefiles.erase(
fi);
654 afilesiter = availablefiles.begin();
657 auto whichread = allreads[
fi].begin();
658 for ( ; whichread != allreads[
fi].end(); ++whichread) {
659 const int tryproc = whichread->first;
660 if (busyprocs.find(tryproc) == busyprocs.end()) {
661 busyprocs.insert(tryproc);
663 vreads.reserve(whichread->second.size());
664 for (
auto const& kv : whichread->second) {
665 vreads.push_back(kv.second);
667 if (tryproc == coordproc) {
669 for (
auto x : vreads) {
670 iopreads.push_back(
x);
676 availablefiles.erase(afilesiter);
677 afilesiter = availablefiles.begin();
681 if (whichread == allreads[
fi].
end()) {
684 allreads[
fi].erase(whichread);
688 while (!iopreads.empty()) {
689 int i = iopreads.front();
692 iopreads.pop_front();
693 if (iopreads.empty()) {
694 availablefiles.insert(iopfileindex);
695 busyprocs.erase(coordproc);
705 if (reqspending > 0) {
709 const int i = idone[0];
710 const int procdone = rmess.
pid();
711 totalioreqs -= idone[1];
713 busyprocs.erase(procdone);
714 std::string
const& fname = fod[i].m_name;
715 const int fi = filenames.find(fname)->second;
716 availablefiles.insert(
fi);
725 const auto nrmess =
static_cast<int>(rmess.
count());
726 for (
int ir = 0; ir < nrmess; ++ir) {
727 int i = recreads[ir];
731 idone[0] = recreads[0];
#define BL_PROFILE(a)
Definition: AMReX_BLProfiler.H:551
#define AMREX_ASSERT(EX)
Definition: AMReX_BLassert.H:38
#define AMREX_EXPORT
Definition: AMReX_Extension.H:191
Array4< int const > offset
Definition: AMReX_HypreMLABecLap.cpp:1089
int MPI_Comm
Definition: AMReX_ccse-mpi.H:47
A collection of Boxes stored in an Array.
Definition: AMReX_BoxArray.H:550
int readFrom(std::istream &is)
Initialize the BoxArray from the supplied istream. It is an error if the BoxArray has already been in...
std::ostream & writeOn(std::ostream &) const
Output this BoxArray to a checkpoint file.
Long size() const noexcept
Return the number of boxes in the BoxArray.
Definition: AMReX_BoxArray.H:597
Calculates the distribution of FABs to MPI processes.
Definition: AMReX_DistributionMapping.H:41
const Vector< int > & ProcessorMap() const noexcept
Returns a constant reference to the mapping of boxes in the underlying BoxArray to the CPU that holds...
Definition: AMReX_DistributionMapping.cpp:47
A Fortran Array of REALs.
Definition: AMReX_FArrayBox.H:229
IntVect nGrowVect() const noexcept
Definition: AMReX_FabArrayBase.H:79
const BoxArray & boxArray() const noexcept
Return a constant reference to the BoxArray that defines the valid region associated with this FabArr...
Definition: AMReX_FabArrayBase.H:94
int size() const noexcept
Return the number of FABs in the FabArray.
Definition: AMReX_FabArrayBase.H:109
bool empty() const noexcept
Definition: AMReX_FabArrayBase.H:88
const DistributionMapping & DistributionMap() const noexcept
Return constant reference to associated DistributionMapping.
Definition: AMReX_FabArrayBase.H:130
Box fabbox(int K) const noexcept
Return the Kth FABs Box in the FabArray. That is, the region the Kth fab is actually defined on.
int nComp() const noexcept
Return number of variables (aka components) associated with each point.
Definition: AMReX_FabArrayBase.H:82
void define(const BoxArray &bxs, const DistributionMapping &dm, int nvar, int ngrow, const MFInfo &info=MFInfo(), const FabFactory< FAB > &factory=DefaultFabFactory< FAB >())
Define this FabArray identically to that performed by the constructor having an analogous function si...
Definition: AMReX_FabArray.H:2027
Definition: AMReX_MFIter.H:57
bool isValid() const noexcept
Is the iterator valid i.e. is it associated with a FAB?
Definition: AMReX_MFIter.H:141
This class encapsulates writing to nfiles.
Definition: AMReX_NFiles.H:27
Vector< int > FileNumbersWritten()
these are the file numbers to which each rank wrote [rank] a rank only writes to one file
Definition: AMReX_NFiles.cpp:517
static int ActualNFiles(int nOutFiles)
this returns the actual number of files used the range [1, nProcs] is enforced
Definition: AMReX_NFiles.H:130
bool GetDynamic() const
Definition: AMReX_NFiles.H:54
bool GetSparseFPP() const
Definition: AMReX_NFiles.H:65
void SetSparseFPP(const Vector< int > &ranksToWrite)
call this to use a file per process for a sparse set of writers. ranksToWrite.size() will set noutfil...
Definition: AMReX_NFiles.cpp:114
std::fstream & Stream()
Definition: AMReX_NFiles.H:98
bool ReadyToWrite(bool appendFirst=false)
if appendFirst is true, the first set for this iterator will open the files in append mode
Definition: AMReX_NFiles.cpp:204
int FileNumber() const
Definition: AMReX_NFiles.H:161
const std::string & FileName() const
Definition: AMReX_NFiles.H:160
int CoordinatorProc() const
this is the processor coordinating dynamic set selection
Definition: AMReX_NFiles.H:184
const Vector< Vector< int > > & FileNumbersWriteOrder() const
these are the order of ranks which wrote to each file [filenumber][ranks in order they wrote to filen...
Definition: AMReX_NFiles.H:198
void SetDynamic(int deciderproc=-1)
call this to use dynamic set selection deciderproc defaults to nprocs - 1 if < 0
Definition: AMReX_NFiles.cpp:69
Hold the description and status of communication data.
Definition: AMReX_ParallelDescriptor.H:57
A Descriptor of the Real Type.
Definition: AMReX_FabConv.H:105
This class is a thin wrapper around std::vector. Unlike vector, Vector::operator[] provides bound che...
Definition: AMReX_Vector.H:27
Long size() const noexcept
Definition: AMReX_Vector.H:50
T * dataPtr() noexcept
get access to the underlying data pointer
Definition: AMReX_Vector.H:46
Definition: AMReX_VisMFBuffer.H:13
static Long GetIOBufferSize()
Definition: AMReX_VisMFBuffer.H:26
File I/O for FabArray<FArrayBox>. Wrapper class for reading/writing FabArray<FArrayBox> objects to di...
Definition: AMReX_VisMF.H:34
static AMREX_EXPORT bool useSingleWrite
Definition: AMReX_VisMF.H:350
IntVect nGrowVect() const
Definition: AMReX_VisMF.cpp:491
static AMREX_EXPORT bool setBuf
Definition: AMReX_VisMF.H:348
static AMREX_EXPORT bool useSynchronousReads
Definition: AMReX_VisMF.H:353
static void SetGroupSets(bool groupsets)
Definition: AMReX_VisMF.H:259
Real max(int fabIndex, int nComp) const
The max of the FAB (in valid region) at specified index and component.
Definition: AMReX_VisMF.cpp:534
static void SetNOutFiles(int noutfiles, MPI_Comm comm=ParallelDescriptor::Communicator())
Definition: AMReX_VisMF.cpp:152
static AMREX_EXPORT bool checkFilePositions
Definition: AMReX_VisMF.H:351
static Long FileOffset(std::ostream &os)
The file offset of the passed ostream.
Definition: AMReX_VisMF.cpp:575
static std::ifstream * OpenStream(const std::string &fileName)
Open the stream if it is not already open Close the stream if not persistent or forced Close all open...
Definition: AMReX_VisMF.cpp:2208
static bool GetUseDynamicSetSelection()
Definition: AMReX_VisMF.H:279
static bool GetSetBuf()
Definition: AMReX_VisMF.H:261
const BoxArray & boxArray() const
The BoxArray of the on-disk FabArray<FArrayBox>.
Definition: AMReX_VisMF.cpp:503
static void SetUseSingleWrite(bool usesinglewrite)
Definition: AMReX_VisMF.H:268
static void SetHeaderVersion(VisMF::Header::Version version)
Definition: AMReX_VisMF.H:255
static void Read(FabArray< FArrayBox > &mf, const std::string &name, const char *faHeader=nullptr, int coordinatorProc=ParallelDescriptor::IOProcessorNumber(), int allow_empty_mf=0)
Read a FabArray<FArrayBox> from disk written using VisMF::Write(). If the FabArray<FArrayBox> fafab h...
Definition: AMReX_VisMF.cpp:1536
static Long WriteHeader(const std::string &mf_name, VisMF::Header &hdr, int procToWrite=ParallelDescriptor::IOProcessorNumber(), MPI_Comm comm=ParallelDescriptor::Communicator())
Definition: AMReX_VisMF.cpp:950
std::string m_fafabname
Name of the FabArray<FArrayBox>.
Definition: AMReX_VisMF.H:330
static void CloseAllStreams()
Definition: AMReX_VisMF.cpp:2258
static void AsyncWriteDoit(const FabArray< FArrayBox > &mf, const std::string &mf_name, bool is_rvalue, bool valid_cells_only)
Definition: AMReX_VisMF.cpp:2297
int size() const
Definition: AMReX_VisMF.cpp:497
static AMREX_EXPORT int verbose
Definition: AMReX_VisMF.H:345
static int GetVerbose()
Definition: AMReX_VisMF.H:251
static Long WriteHeaderDoit(const std::string &mf_name, VisMF::Header const &hdr)
Definition: AMReX_VisMF.cpp:918
static AMREX_EXPORT bool groupSets
Definition: AMReX_VisMF.H:347
static VisMF::Header::Version GetHeaderVersion()
Definition: AMReX_VisMF.H:254
static void SetCheckFilePositions(bool cfp)
Definition: AMReX_VisMF.H:271
static void SetUseSingleRead(bool usesingleread)
Definition: AMReX_VisMF.H:265
FArrayBox * readFAB(int idx, const std::string &mf_name)
Read the entire fab (all components).
Definition: AMReX_VisMF.cpp:591
static bool GetCheckFilePositions()
Definition: AMReX_VisMF.H:270
const FArrayBox & GetFab(int fabIndex, int compIndex) const
The FAB at the specified index and component. Reads it from disk if necessary. This reads only the sp...
Definition: AMReX_VisMF.cpp:559
static void DeleteStream(const std::string &fileName)
Definition: AMReX_VisMF.cpp:2247
static Long Write(const FabArray< FArrayBox > &mf, const std::string &name, VisMF::How how=NFiles, bool set_ghost=false)
Write a FabArray<FArrayBox> to disk in a "smart" way. Returns the total number of bytes written on th...
Definition: AMReX_VisMF.cpp:975
Vector< Vector< FArrayBox * > > m_pa
We manage the FABs individually.
Definition: AMReX_VisMF.H:334
static AMREX_EXPORT bool useSingleRead
Definition: AMReX_VisMF.H:349
static bool GetUseSynchronousReads()
Definition: AMReX_VisMF.H:276
static int GetMFFileInStreams()
Definition: AMReX_VisMF.H:248
static int GetNOutFiles()
Definition: AMReX_VisMF.cpp:164
static AMREX_EXPORT VisMF::Header::Version currentVersion
Definition: AMReX_VisMF.H:346
static AMREX_EXPORT bool usePersistentIFStreams
Definition: AMReX_VisMF.H:352
static bool GetGroupSets()
Definition: AMReX_VisMF.H:258
static std::string DirName(const std::string &filename)
Definition: AMReX_VisMF.cpp:621
static Long WriteOnlyHeader(const FabArray< FArrayBox > &mf, const std::string &mf_name, VisMF::How how=NFiles)
Write only the header-file corresponding to FabArray<FArrayBox> to disk without the corresponding FAB...
Definition: AMReX_VisMF.cpp:1176
int nGrow() const
The grow factor of the on-disk FabArray<FArrayBox>.
Definition: AMReX_VisMF.cpp:485
Header m_hdr
The VisMF header as read from disk.
Definition: AMReX_VisMF.H:332
static AMREX_EXPORT bool useDynamicSetSelection
Definition: AMReX_VisMF.H:354
static bool GetUsePersistentIFStreams()
Definition: AMReX_VisMF.H:273
static void SetUseSynchronousReads(bool usepsr)
Definition: AMReX_VisMF.H:277
static void SetVerbose(int v)
Definition: AMReX_VisMF.H:252
static void CloseStream(const std::string &fileName, bool forceClose=false)
Definition: AMReX_VisMF.cpp:2230
How
How we write out FabArray<FArrayBox>s. These are deprecated, we always use NFiles....
Definition: AMReX_VisMF.H:41
@ NFiles
Definition: AMReX_VisMF.H:41
@ OneFilePerCPU
Definition: AMReX_VisMF.H:41
static void AsyncWrite(const FabArray< FArrayBox > &mf, const std::string &mf_name, bool valid_cells_only=false)
Definition: AMReX_VisMF.cpp:2264
static void Finalize()
Definition: AMReX_VisMF.cpp:145
void clear()
Delete()s all the FABs.
Definition: AMReX_VisMF.cpp:2176
static bool Exist(const std::string &name)
Does FabArray exist?
Definition: AMReX_VisMF.cpp:2038
static void SetMFFileInStreams(int nstreams, MPI_Comm comm=ParallelDescriptor::Communicator())
Definition: AMReX_VisMF.cpp:158
static void ReadFAHeader(const std::string &fafabName, Vector< char > &header)
Read only the header of a FabArray, header will be resized here.
Definition: AMReX_VisMF.cpp:2052
VisMF & operator=(const VisMF &)=delete
static AMREX_EXPORT int nMFFileInStreams
Definition: AMReX_VisMF.H:343
VisMF(std::string fafab_name)
Construct by reading in the on-disk VisMF of the specified name. The FABs in the on-disk FabArray are...
Definition: AMReX_VisMF.cpp:1398
static void Initialize()
Definition: AMReX_VisMF.cpp:107
static bool GetUseSingleRead()
Definition: AMReX_VisMF.H:264
static AMREX_EXPORT std::map< std::string, VisMF::PersistentIFStream > persistentIFStreams
Persistent streams. These open on demand and should be closed when not needed with CloseAllStreams....
Definition: AMReX_VisMF.H:340
static std::string BaseName(const std::string &filename)
Definition: AMReX_VisMF.cpp:603
static void RemoveFiles(const std::string &name, bool verbose=false)
this will remove nfiles associated with name and the header
Definition: AMReX_VisMF.cpp:1367
static AMREX_EXPORT bool allowSparseWrites
Definition: AMReX_VisMF.H:355
static AMREX_EXPORT int nOutFiles
The number of files to write for a FabArray<FArrayBox>.
Definition: AMReX_VisMF.H:342
int nComp() const
The number of components in the on-disk FabArray<FArrayBox>.
Definition: AMReX_VisMF.cpp:479
Real min(int fabIndex, int nComp) const
The min of the FAB (in valid region) at specified index and component.
Definition: AMReX_VisMF.cpp:509
static bool Check(const std::string &name)
Check if the multifab is ok, false is returned if not ok.
Definition: AMReX_VisMF.cpp:2063
static void SetUsePersistentIFStreams(bool usepifs)
Definition: AMReX_VisMF.H:274
static void SetUseDynamicSetSelection(bool usedss)
Definition: AMReX_VisMF.H:280
static bool GetUseSingleWrite()
Definition: AMReX_VisMF.H:267
static void FindOffsets(const FabArray< FArrayBox > &mf, const std::string &filePrefix, VisMF::Header &hdr, VisMF::Header::Version whichVersion, NFilesIter &nfi, MPI_Comm comm=ParallelDescriptor::Communicator())
fileNumbers must be passed in for dynamic set selection [proc]
Definition: AMReX_VisMF.cpp:1210
VisMF(const VisMF &)=delete
static void SetSetBuf(bool setbuf)
Definition: AMReX_VisMF.H:262
static bool NoFabHeader(const VisMF::Header &hdr)
Definition: AMReX_VisMF.cpp:2186
@ FAB
Definition: AMReX_AmrvisConstants.H:86
void streamSynchronize() noexcept
Definition: AMReX_GpuDevice.H:237
void dtoh_memcpy_async(void *p_h, const void *p_d, const std::size_t sz) noexcept
Definition: AMReX_GpuDevice.H:265
MPI_Comm Communicator() noexcept
Definition: AMReX_ParallelDescriptor.H:210
int MyProc() noexcept
return the rank number local to the current Parallel Context
Definition: AMReX_ParallelDescriptor.H:125
void ReadAndBcastFile(const std::string &filename, Vector< char > &charBuf, bool bExitOnError, const MPI_Comm &comm)
Definition: AMReX_ParallelDescriptor.cpp:1459
Message Send(const T *buf, size_t n, int dst_pid, int tag)
Definition: AMReX_ParallelDescriptor.H:1109
int SeqNum() noexcept
Returns sequential message sequence numbers, usually used as tags for send/recv.
Definition: AMReX_ParallelDescriptor.H:613
int NProcs() noexcept
return the number of MPI ranks local to the current Parallel Context
Definition: AMReX_ParallelDescriptor.H:243
void IProbe(int, int, int &, MPI_Status &)
Definition: AMReX_ParallelDescriptor.cpp:1209
int IOProcessorNumber() noexcept
Definition: AMReX_ParallelDescriptor.H:266
Message Recv(T *, size_t n, int pid, int tag)
Definition: AMReX_ParallelDescriptor.H:1151
static int fi(amrex::Real t, N_Vector y_data, N_Vector y_rhs, void *user_data)
Definition: AMReX_SundialsIntegrator.H:49
void read_fab(FAB &fab, VisMF::FabOnDisk const &fod, std::string const &name)
Definition: AMReX_VisMF.H:524
Definition: AMReX_Amr.cpp:49
void FileOpenFailed(const std::string &file)
Output a message and abort when couldn't open the file.
Definition: AMReX_Utility.cpp:131
std::enable_if_t< std::is_same_v< FAB, IArrayBox > > Write(const FabArray< FAB > &fa, const std::string &name)
Write iMultiFab/FabArray<IArrayBox>
Definition: AMReX_VisMF.H:383
std::enable_if_t< std::is_same_v< FAB, IArrayBox > > Read(FabArray< FAB > &fa, const std::string &name)
Read iMultiFab/FabArray<IArrayBox>
Definition: AMReX_VisMF.H:560
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE Dim3 end(BoxND< dim > const &box) noexcept
Definition: AMReX_Box.H:1890
bool match(const BoxArray &x, const BoxArray &y)
Note that two BoxArrays that match are not necessarily equal.
void Error(const std::string &msg)
Print out message to cerr and exit via amrex::Abort().
Definition: AMReX.cpp:219
Arena * The_Pinned_Arena()
Definition: AMReX_Arena.cpp:649
std::ostream & operator<<(std::ostream &os, AmrMesh const &amr_mesh)
Definition: AMReX_AmrMesh.cpp:1236
std::istream & operator>>(std::istream &is, BoxND< dim > &bx)
Read from istream.
Definition: AMReX_Box.H:1700
Definition: AMReX_FabArrayCommI.H:896
Definition: AMReX_ccse-mpi.H:51
A structure containing info regarding an on-disk FAB.
Definition: AMReX_VisMF.H:56
Long m_head
Offset to start of FAB in file.
Definition: AMReX_VisMF.H:63
std::string m_name
The two data values in a FabOnDisk structure.
Definition: AMReX_VisMF.H:62
FabOnDisk()=default
The default constructor – null out all fields.
This structure is used to store the read order for each FabArray file.
Definition: AMReX_VisMF.H:117
int rankToRead
Definition: AMReX_VisMF.H:118
Box box
Definition: AMReX_VisMF.H:121
Long fileOffset
Definition: AMReX_VisMF.H:120
int faIndex
Definition: AMReX_VisMF.H:119
This structure is used to store file ifstreams that remain open.
Definition: AMReX_VisMF.H:129
~PersistentIFStream()
Definition: AMReX_VisMF.cpp:2197
VisMF::IO_Buffer ioBuffer
Definition: AMReX_VisMF.H:133
PersistentIFStream(PersistentIFStream &&)=delete
std::streampos currentPosition
Definition: AMReX_VisMF.H:131
std::ifstream * pstr
Definition: AMReX_VisMF.H:130
bool isOpen
Definition: AMReX_VisMF.H:132
PersistentIFStream()=default
PersistentIFStream(PersistentIFStream const &)=delete
PersistentIFStream & operator=(PersistentIFStream const &)=delete