mirror of
https://github.com/NGSolve/netgen.git
synced 2024-09-22 17:52:50 +05:00
301 lines
7.4 KiB
C++
301 lines
7.4 KiB
C++
#ifndef FILE_PARALLEL
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#define FILE_PARALLEL
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#ifdef VTRACE
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#include "vt_user.h"
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#else
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#define VT_USER_START(n)
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#define VT_USER_END(n)
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#define VT_TRACER(n)
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#endif
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namespace netgen
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{
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extern DLL_HEADER int id, ntasks;
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#ifdef PARALLEL
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enum { MPI_TAG_CMD = 110 };
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enum { MPI_TAG_MESH = 210 };
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enum { MPI_TAG_VIS = 310 };
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extern MPI_Comm mesh_comm;
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template <class T>
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MPI_Datatype MyGetMPIType ( ) { cerr << "ERROR in GetMPIType() -- no type found" << endl;return 0;}
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template <>
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inline MPI_Datatype MyGetMPIType<int> ( )
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{ return MPI_INT; }
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template <>
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inline MPI_Datatype MyGetMPIType<double> ( )
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{ return MPI_DOUBLE; }
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template <int S> class Vec;
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template <>
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inline MPI_Datatype MyGetMPIType<Vec<3> > ()
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{
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static MPI_Datatype MPI_T = 0;
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if (!MPI_T)
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{
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MPI_Type_contiguous ( 3, MPI_DOUBLE, &MPI_T);
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MPI_Type_commit ( &MPI_T );
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}
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return MPI_T;
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};
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inline void MyMPI_Send (int i, int dest, int tag)
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{
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int hi = i;
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MPI_Send( &hi, 1, MPI_INT, dest, tag, MPI_COMM_WORLD);
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}
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inline void MyMPI_Recv (int & i, int src, int tag)
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{
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MPI_Status status;
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MPI_Recv( &i, 1, MPI_INT, src, tag, MPI_COMM_WORLD, &status);
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}
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inline void MyMPI_Send (const string & s, int dest, int tag)
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{
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MPI_Send( const_cast<char*> (s.c_str()), s.length(), MPI_CHAR, dest, tag, MPI_COMM_WORLD);
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}
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inline void MyMPI_Recv (string & s, int src, int tag)
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{
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MPI_Status status;
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int len;
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MPI_Probe (src, tag, MPI_COMM_WORLD, &status);
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MPI_Get_count (&status, MPI_CHAR, &len);
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s.assign (len, ' ');
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MPI_Recv( &s[0], len, MPI_CHAR, src, tag, MPI_COMM_WORLD, &status);
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}
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template <class T, int BASE>
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inline void MyMPI_Send (FlatArray<T, BASE> s, int dest, int tag)
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{
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MPI_Send( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, MPI_COMM_WORLD);
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}
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template <class T, int BASE>
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inline void MyMPI_Recv ( FlatArray<T, BASE> s, int src, int tag)
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{
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MPI_Status status;
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MPI_Recv( &s.First(), s.Size(), MyGetMPIType<T>(), src, tag, MPI_COMM_WORLD, &status);
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}
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template <class T, int BASE>
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inline void MyMPI_Recv ( Array <T, BASE> & s, int src, int tag)
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{
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MPI_Status status;
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int len;
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MPI_Probe (src, tag, MPI_COMM_WORLD, &status);
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MPI_Get_count (&status, MyGetMPIType<T>(), &len);
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s.SetSize (len);
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MPI_Recv( &s.First(), len, MyGetMPIType<T>(), src, tag, MPI_COMM_WORLD, &status);
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}
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template <class T, int BASE>
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inline int MyMPI_Recv ( Array <T, BASE> & s, int tag)
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{
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MPI_Status status;
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int len;
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MPI_Probe (MPI_ANY_SOURCE, tag, MPI_COMM_WORLD, &status);
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int src = status.MPI_SOURCE;
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MPI_Get_count (&status, MyGetMPIType<T>(), &len);
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s.SetSize (len);
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MPI_Recv( &s.First(), len, MyGetMPIType<T>(), src, tag, MPI_COMM_WORLD, &status);
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return src;
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}
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/*
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template <class T, int BASE>
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inline void MyMPI_ISend (FlatArray<T, BASE> s, int dest, int tag, MPI_Request & request)
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{
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MPI_Isend( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, MPI_COMM_WORLD, & request);
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}
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template <class T, int BASE>
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inline void MyMPI_IRecv (FlatArray<T, BASE> s, int dest, int tag, MPI_Request & request)
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{
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MPI_Irecv( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, MPI_COMM_WORLD, & request);
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}
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*/
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template <class T, int BASE>
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inline MPI_Request MyMPI_ISend (FlatArray<T, BASE> s, int dest, int tag, MPI_Comm comm = MPI_COMM_WORLD)
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{
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MPI_Request request;
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MPI_Isend( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, comm, &request);
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return request;
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}
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template <class T, int BASE>
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inline MPI_Request MyMPI_IRecv (FlatArray<T, BASE> s, int dest, int tag, MPI_Comm comm = MPI_COMM_WORLD)
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{
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MPI_Request request;
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MPI_Irecv( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, comm, &request);
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return request;
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}
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/*
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template <class T, int BASE>
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inline void MyMPI_ISend (FlatArray<T, BASE> s, int dest, int tag)
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{
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MPI_Request request;
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MPI_Isend( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, MPI_COMM_WORLD, &request);
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MPI_Request_free (&request);
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}
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template <class T, int BASE>
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inline void MyMPI_IRecv (FlatArray<T, BASE> s, int dest, int tag)
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{
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MPI_Request request;
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MPI_Irecv( &s.First(), s.Size(), MyGetMPIType<T>(), dest, tag, MPI_COMM_WORLD, &request);
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MPI_Request_free (&request);
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}
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*/
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inline void MyMPI_SendCmd (const char * cmd)
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{
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char buf[100];
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strcpy (buf, cmd);
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// MPI_Bcast (&buf, 100, MPI_CHAR, 0, MPI_COMM_WORLD);
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for (int dest = 1; dest < ntasks; dest++)
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MPI_Bsend( &buf, 100, MPI_CHAR, dest, MPI_TAG_CMD, MPI_COMM_WORLD);
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}
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inline string MyMPI_RecvCmd ()
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{
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char buf[100];
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// MPI_Bcast (&buf, 100, MPI_CHAR, 0, MPI_COMM_WORLD);
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MPI_Status status;
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int flag;
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do
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{
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MPI_Iprobe (0, MPI_TAG_CMD, MPI_COMM_WORLD, &flag, &status);
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if (!flag) usleep (1000);
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}
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while (!flag);
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MPI_Recv( &buf, 100, MPI_CHAR, 0, MPI_TAG_CMD, MPI_COMM_WORLD, &status);
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return string(buf);
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}
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template <class T>
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inline void MyMPI_Bcast (T & s, MPI_Comm comm = MPI_COMM_WORLD)
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{
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MPI_Bcast (&s, 1, MyGetMPIType<T>(), 0, comm);
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}
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template <class T>
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inline void MyMPI_Bcast (Array<T, 0> & s, MPI_Comm comm = MPI_COMM_WORLD)
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{
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int size = s.Size();
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MyMPI_Bcast (size, comm);
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if (id != 0) s.SetSize (size);
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MPI_Bcast (&s[0], size, MyGetMPIType<T>(), 0, comm);
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}
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template <class T>
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inline void MyMPI_Bcast (Array<T, 0> & s, int root, MPI_Comm comm = MPI_COMM_WORLD)
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{
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int id;
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MPI_Comm_rank(comm, &id);
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int size = s.Size();
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MPI_Bcast (&size, 1, MPI_INT, root, comm);
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if (id != root) s.SetSize (size);
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if ( !size ) return;
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MPI_Bcast (&s[0], size, MyGetMPIType<T>(), root, comm);
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}
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template <class T, class T2>
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inline void MyMPI_Allgather (const T & send, FlatArray<T2> recv, MPI_Comm comm)
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{
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MPI_Allgather( const_cast<T*> (&send), 1, MyGetMPIType<T>(), &recv[0], 1, MyGetMPIType<T2>(), comm);
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}
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template <class T, class T2>
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inline void MyMPI_Alltoall (FlatArray<T> send, FlatArray<T2> recv, MPI_Comm comm)
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{
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MPI_Alltoall( &send[0], 1, MyGetMPIType<T>(), &recv[0], 1, MyGetMPIType<T2>(), comm);
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}
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// template <class T, class T2>
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// inline void MyMPI_Alltoall_Block (FlatArray<T> send, FlatArray<T2> recv, int blocklen, MPI_Comm comm)
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// {
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// MPI_Alltoall( &send[0], blocklen, MyGetMPIType<T>(), &recv[0], blocklen, MyGetMPIType<T2>(), comm);
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// }
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/*
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inline void MyMPI_Send ( int *& s, int len, int dest, int tag)
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{
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int hlen = len;
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MPI_Send( &hlen, 1, MPI_INT, dest, tag, MPI_COMM_WORLD);
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MPI_Send( s, len, MPI_INT, dest, tag, MPI_COMM_WORLD);
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}
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inline void MyMPI_Recv ( int *& s, int & len, int src, int tag)
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{
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MPI_Status status;
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MPI_Recv( &len, 1, MPI_INT, src, tag, MPI_COMM_WORLD, &status);
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if ( s )
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delete [] s;
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s = new int [len];
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MPI_Recv( s, len, MPI_INT, src, tag, MPI_COMM_WORLD, &status);
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}
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inline void MyMPI_Send ( double * s, int len, int dest, int tag)
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{
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MPI_Send( &len, 1, MPI_INT, dest, tag, MPI_COMM_WORLD);
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MPI_Send( s, len, MPI_DOUBLE, dest, tag, MPI_COMM_WORLD);
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}
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inline void MyMPI_Recv ( double *& s, int & len, int src, int tag)
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{
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MPI_Status status;
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MPI_Recv( &len, 1, MPI_INT, src, tag, MPI_COMM_WORLD, &status);
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if ( s )
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delete [] s;
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s = new double [len];
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MPI_Recv( s, len, MPI_DOUBLE, src, tag, MPI_COMM_WORLD, &status);
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}
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*/
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#endif // PARALLEL
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}
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#endif
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