timer_transmitter_send.cpp

/*
Copyright (c) 2024, Hammurabi Mendes.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the copyright holder nor the names of its contributors
      may be used to endorse or promote products derived from this software without
      specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 */

#include <iostream>
#include <unistd.h>

#include <thread>
#include <mutex>

#include <array>

#include "networking.h"
#include "ibutils.hpp"

#include "utils/TimeHolder.hpp"

using std::thread;
using std::recursive_mutex;

using std::array;

using std::cin;
using std::cout;
using std::cerr;
using std::endl;

constexpr uint64_t number_operations = 100000;

IBContext context(0, 1);

char server_name[128];
bool server;

#define SYNC_PORT 50135

void server_or_client() {
    array<RDMAMemory *, 128> incoming_memory;
    array<RDMAMemory *, 128> outgoing_memory;

    for(int i = 0; i < incoming_memory.size(); i++) {
        incoming_memory[i] = new RDMAMemory(&context, 4096);
        outgoing_memory[i] = new RDMAMemory(&context, 4096);
    }

    for(int i = 0; i < incoming_memory.size(); i++) {
        context.post_receive(incoming_memory[i]);
    }

    IBQueuePair queue_pair(&context);
    IBTransmitter transmitter(&context, &queue_pair, 0);

    // Synchronize
    struct QPInfo {
        uint32_t number;
        uint16_t lid;
    };

    QPInfo qpinfo_outgoing;
    QPInfo qpinfo_incoming;

    qpinfo_outgoing.number = queue_pair.queue_pair->qp_num;
    qpinfo_outgoing.lid = context.port_information.lid;

    cout << "(Me) QP number = " << qpinfo_outgoing.number << " lid = " << qpinfo_outgoing.lid << endl;

    if(server) {
        int server_socket = create_server(SYNC_PORT);

        int client_socket = accept_client(server_socket);

        send(client_socket, &qpinfo_outgoing, sizeof(struct QPInfo), 0);
        recv(client_socket, &qpinfo_incoming, sizeof(struct QPInfo), 0);
    }
    else {
        int server_socket = connect_server(server_name, SYNC_PORT);

        recv(server_socket, &qpinfo_incoming, sizeof(struct QPInfo), 0);
        send(server_socket, &qpinfo_outgoing, sizeof(struct QPInfo), 0);
    }

    cout << "(Other) QP number = " << qpinfo_incoming.number << " lid = " << qpinfo_incoming.lid << endl;

    queue_pair.setup(&context, qpinfo_incoming.number, qpinfo_incoming.lid);

    Synchronizer synchronizer{1};
    sprintf((char *) outgoing_memory[0]->get_buffer(), "Hello %s!\n", server ? "client" : "server");

    transmitter.send(outgoing_memory[0], 0, 4096, IBV_SEND_SIGNALED, nullptr, &synchronizer);

    while(synchronizer.get_number_operations_left() > 0) {
        context.completion_queues->flush_send_completion_queue();
    }

    ReceivedMessageInformation received_message_information;
    while(context.completion_queues->poll_recv_completion_queue(&received_message_information) == 0) {
    }

    RDMAMemory *incoming = received_message_information.get_memory();
    cout << (char *) incoming->get_buffer() << endl;

    if(received_message_information.status == IBV_WC_SUCCESS) {
        context.post_receive(incoming);
    }

    if(server) {
        for(uint64_t iteration = 0; iteration < number_operations; iteration++) {
            ReceivedMessageInformation received_message_information;
            while(context.completion_queues->poll_recv_completion_queue(&received_message_information) == 0) {
            }

            RDMAMemory *incoming = received_message_information.get_memory();
            if(iteration % 1000 == 0) {
                cout << incoming->get_buffer() << endl;
            }

            if(received_message_information.status == IBV_WC_SUCCESS) {
                context.post_receive(incoming);
            }
        }
    }
    else {
        TimeHolder timer;

        for(uint64_t iteration = 0; iteration < number_operations - 1; iteration++) {
            sprintf((char *) outgoing_memory[iteration % outgoing_memory.size()]->get_buffer(), "Hello world %lu!\n", iteration);

            transmitter.send(outgoing_memory[iteration % outgoing_memory.size()], 0, 4096);
        }

        synchronizer.reset(1);

        transmitter.send(outgoing_memory[(number_operations - 1) % outgoing_memory.size()], 0, 4096, IBV_SEND_SIGNALED, nullptr, &synchronizer);

        while(synchronizer.get_number_operations_left() > 0) {
            context.completion_queues->flush_send_completion_queue();
        }

        long nanosecond_difference = timer.tick();

        double message_rate = ((double) (number_operations * 1000000000ULL)) / nanosecond_difference;
        double bandwidth = ((double) (number_operations * 4096)) / (1024 * 1024) / (((double) nanosecond_difference) / 1000000000ULL);

        printf("Rate: %.2f messages/s\nBandwidth: %.2f MB/s\n", message_rate, bandwidth);
    }

    cout << "done" << endl;
}

int main(int argc, char **argv) {
    if(argc > 1) {
        cout << "Starting as client" << endl;
        server = false;

        strncpy(server_name, argv[1], 128);
    }
    else {
        cout << "Starting as server" << endl;
        server = true;
    }

    server_or_client();

    return 0;
}