Mooncake/mooncake-transfer-engine/example/memory_pool.cpp

107 lines
3.4 KiB
C++

// Copyright 2024 KVCache.AI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <gflags/gflags.h>
#include <glog/logging.h>
#include <sys/time.h>
#include <cstdlib>
#include <fstream>
#include <iomanip>
#include <memory>
#include "transfer_engine.h"
#include "transport/transport.h"
#include "common.h"
#define NR_SOCKETS (1)
#define BASE_ADDRESS_HINT (0x40000000000)
DEFINE_string(local_server_name, mooncake::getHostname(),
"Local server name for segment discovery");
DEFINE_string(metadata_server, "192.168.3.77:2379", "etcd server host address");
DEFINE_string(device_name, "mlx5_2", "Device name to use");
DEFINE_string(nic_priority_matrix, "",
"Path to NIC priority matrix file (Advanced)");
using namespace mooncake;
static void *allocateMemoryPool(size_t size, int socket_id) {
void *start_addr;
start_addr = mmap((void *)BASE_ADDRESS_HINT, size, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_PRIVATE, -1, 0);
if (start_addr != (void *)BASE_ADDRESS_HINT) {
PLOG(ERROR) << "Failed to allocate memory on specified address";
exit(1);
}
return start_addr;
}
static void freeMemoryPool(void *addr, size_t size) { munmap(addr, size); }
std::string loadNicPriorityMatrix() {
if (!FLAGS_nic_priority_matrix.empty()) {
std::ifstream file(FLAGS_nic_priority_matrix);
if (file.is_open()) {
std::string content((std::istreambuf_iterator<char>(file)),
std::istreambuf_iterator<char>());
file.close();
return content;
}
}
return "{\"cpu:0\": [[\"" + FLAGS_device_name + "\"], []], " +
"\"cpu:1\": [[\"" + FLAGS_device_name + "\"], []]}";
}
int target() {
auto nic_priority_matrix = loadNicPriorityMatrix();
const size_t dram_buffer_size = 1ull << 30;
// disable topology auto discovery for testing.
auto engine = std::make_unique<TransferEngine>(false);
void **args = (void **)malloc(2 * sizeof(void *));
args[0] = (void *)nic_priority_matrix.c_str();
args[1] = nullptr;
const std::string &connectable_name = FLAGS_local_server_name;
engine->init(FLAGS_metadata_server, FLAGS_local_server_name.c_str(),
connectable_name.c_str(), 12345);
engine->installTransport("rdma", args);
LOG_ASSERT(engine);
void *addr[2] = {nullptr};
for (int i = 0; i < NR_SOCKETS; ++i) {
addr[i] = allocateMemoryPool(dram_buffer_size, i);
int rc = engine->registerLocalMemory(addr[i], dram_buffer_size,
"cpu:" + std::to_string(i));
LOG_ASSERT(!rc);
}
while (true) sleep(1);
for (int i = 0; i < NR_SOCKETS; ++i) {
engine->unregisterLocalMemory(addr[i]);
freeMemoryPool(addr[i], dram_buffer_size);
}
return 0;
}
int main(int argc, char **argv) {
gflags::ParseCommandLineFlags(&argc, &argv, false);
return target();
}