MpiProxy.h

Go to the documentation of this file.

/*
 * Copyright (C) 2020 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __SERVER_MPIPROXY_MPIPROXY_H
#define __SERVER_MPIPROXY_MPIPROXY_H
 
#include <Types.h>
#include <Index.h>
#include <Memory.h>
#include <Array.h>
#include <POSIXApplication.h>
#include <sys/socket.h>
 
class NetworkClient;
class MemoryChannel;
 
class MpiProxy : public POSIXApplication
{
  private:
 
    static const u16 UdpPort = 6660;
 
    static const Size ReceiveTimeoutMs = 500;
 
    static const Size MaximumChannels = 128u;
 
  public:
 
    static const Size MaximumPacketSize = 1448;
 
    enum Operation
    {
        MpiOpSend = 0,
        MpiOpRecv,
        MpiOpExec,
        MpiOpTerminate
    };
 
    struct Header
    {
        u8 operation;
        u8 result;
        u16 rankId;
        u16 coreId;
 
        union
        {
            u16 coreCount;
            u16 datatype;
        };
        u32 datacount;
    };
 
  public:
 
    MpiProxy(int argc, char **argv);
 
    virtual ~MpiProxy();
 
    virtual Result initialize();
 
    virtual Result exec();
 
  private:
 
    Result udpSend(const void *packet,
                   const Size size,
                   const struct sockaddr & addr) const;
 
    Result udpSendMultiple(const struct iovec *vec,
                           const Size count,
                           const struct sockaddr & addr) const;
 
    Result udpReceive(void *packet,
                      Size & size,
                      struct sockaddr & addr) const;
 
    Result processRequest(const u8 *packet,
                          const Size size,
                          const struct sockaddr & addr);
 
    Result processSend(const Header *header,
                       const u8 *packet,
                       const Size size);
 
    Result processRecv(const Header *header,
                       const u8 *packet,
                       const Size size,
                       const struct sockaddr & addr);
 
    Result processExec(const Header *header,
                       const u8 *packet,
                       const Size size,
                       const struct sockaddr & addr);
 
    Result processTerminate(const Header *header,
                            const u8 *packet,
                            const Size size,
                            const struct sockaddr & addr);
 
    Result createChannels(const Size rankId,
                          const Size coreCount);
 
    Result startLocalProcess(const char *command,
                             const Size rankId,
                             const Size coreCount);
 
    Result startRemoteProcess(const Size coreId,
                              const char *command,
                              const Size rankId,
                              const Size coreCount);
 
  private:
 
    int m_sock;
 
    NetworkClient *m_client;
 
    Memory::Range m_memChannelBase;
 
    Index<MemoryChannel, MaximumChannels> m_readChannels;
 
    Index<MemoryChannel, MaximumChannels> m_writeChannels;
 
    Array<ProcessID, MaximumChannels> m_pids;
};
 
#endif /* __SERVER_MPIPROXY_MPIPROXY_H */