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hostdevice.c
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hostdevice.c
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#include "ucxHelper.h"
#include <sys/time.h>
/**
* This file is an alternate version in which a two way handshakle is not required.
* In this case, there are two endpoints:
* DEVICE (-d): the rereciving part of the communication
* HOST (-h): the sending part of the communication
*
* To use the woftware, two process must be launched as follows (launch first the host side process):
*
* (DEVICE) ./hostdevice -d <host ip address>
(HOST) ./hostdevice -h <send_iteration> <transfer_window_size>
*
*/
#define __DEVICE_PORT__ 12345
#define __TEMP_FILE_NAME__ "temp.dat"
extern int errno;
FILE *generate_file(double bytes)
{
srand(getpid());
char *buffer = malloc(bytes);
int out = open(__TEMP_FILE_NAME__, O_CREAT | O_WRONLY | O_TRUNC, 0666);
if (out < 1)
{
printf("%s\n", strerror(errno));
exit(EXIT_FAILURE);
}
int rand_src = open("/dev/random", O_RDONLY);
read(rand_src, buffer, bytes);
if (write(out, buffer, bytes) < 1)
{
printf("%s\n", strerror(errno));
exit(EXIT_FAILURE);
}
close(rand_src);
close(out);
FILE *fp;
if ((fp = fopen(__TEMP_FILE_NAME__, "r")) == NULL)
{
printf("%s\n", strerror(errno));
}
return fp;
}
int main(int argc, char *argv[])
{
struct timeval start, end;
ucp_tag_t SETUP_TAG = 0;
ucp_tag_t DATA_SEND_TAG = 1;
ucp_tag_t TAG_MASK_BITS = 0;
// ucp_tag_t TAG_MASK_BITS = 0xFFFFFFFFFFFFFFFF;
peerAddrInfo *peerInfo;
ucp_ep_h endpoint;
ucs_status_ptr_t request_status;
req_t requestContext;
requestContext.completed = 0;
ucp_context_h context = bootstrapUcx(
default_request_init,
UCP_PARAM_FIELD_FEATURES | UCP_PARAM_FIELD_REQUEST_SIZE | UCP_PARAM_FIELD_REQUEST_INIT,
UCP_FEATURE_TAG);
printf("[info] Context created\n");
ucp_worker_h worker = getUcxWorker(
context,
UCP_WORKER_PARAM_FIELD_THREAD_MODE,
UCS_THREAD_MODE_SINGLE);
printf("[info] Worker created\n");
if (strcmp(argv[1], "-d") == 0) // Remote reciving device
{
device_handshake(argv[2], __DEVICE_PORT__, worker);
printf("[INFO] DEVICE is ready to comunicate\n");
ucp_request_param_t *recvParam = getTagSendReciveParametersSingle(
UCP_OP_ATTR_FIELD_CALLBACK | UCP_OP_ATTR_FIELD_DATATYPE | UCP_OP_ATTR_FIELD_USER_DATA,
&requestContext,
default_recv_handler);
int iterations = 0, winSize = 0;
// recive of bufferSize
waitForMessageWithTag(worker, SETUP_TAG, TAG_MASK_BITS, NULL);
request_status = ucp_tag_recv_nbx(worker, &iterations, sizeof(iterations), SETUP_TAG, TAG_MASK_BITS, recvParam);
ucpWait(worker, request_status, &requestContext);
// recive of winsize
waitForMessageWithTag(worker, SETUP_TAG, TAG_MASK_BITS, NULL);
request_status = ucp_tag_recv_nbx(worker, &winSize, sizeof(winSize), SETUP_TAG, TAG_MASK_BITS, recvParam);
long int transferSize = iterations * winSize;
printf("[INFO] Recived config from HOST: \n\tsendIterations: %d,\n\twinSize: %d,\n\ttotal transfer size:%ld\n", iterations, winSize, transferSize);
gettimeofday(&start, NULL);
for (int i = 0; i < iterations; i++)
{
// probe for last message incoming
waitForMessageWithTag(worker, DATA_SEND_TAG, TAG_MASK_BITS, NULL);
request_status = ucp_tag_recv_nbx(worker, &winSize, sizeof(winSize), DATA_SEND_TAG, TAG_MASK_BITS, recvParam);
ucpWait(worker, request_status, &requestContext);
}
gettimeofday(&end, NULL);
double elapsedTime = (end.tv_sec + 0.000001 * end.tv_usec) - (start.tv_sec + 0.000001 * start.tv_usec);
double bandwidth = transferSize / elapsedTime;
printf("Completed!\n[RESULT] Time elapsed to recive %ld bytes: \n\t%lf seconds.\n\tBandwidth= %.2lf MBytes/s (%.2lf Mbit/s)\n", transferSize, elapsedTime, bandwidth / (1024 * 1024), 8*bandwidth/1e6);
}
else if ((strcmp(argv[1], "-h") == 0) && argc == 4)
{
peerInfo = host_handshake(__DEVICE_PORT__);
printf("[INFO] HOST: obtained DEVICE informations\n");
endpoint = getEndpoint(worker, peerInfo, UCP_EP_PARAM_FIELD_REMOTE_ADDRESS);
printf("[INFO] HOST ready to comunicate\n");
ucp_request_param_t *sendParam = getTagSendReciveParametersSingle(
UCP_OP_ATTR_FIELD_CALLBACK | UCP_OP_ATTR_FIELD_DATATYPE | UCP_OP_ATTR_FIELD_USER_DATA,
&requestContext,
default_send_handler);
int iterations = atoi(argv[2]);
int winsize = atoi(argv[3]);
long int transferSize = iterations * winsize;
FILE *dataSample = generate_file(transferSize);
// first i send to the server the bufferSize
request_status = ucp_tag_send_nbx(endpoint, &iterations, sizeof(iterations), SETUP_TAG, sendParam);
ucpWait(worker, request_status, &requestContext);
printf("[INFO] Sent configs to DEVICE:\tsendIterations->%d\n", iterations);
// now i sent the windowsSize
request_status = ucp_tag_send_nbx(endpoint, &winsize, sizeof(winsize), SETUP_TAG, sendParam);
ucpWait(worker, request_status, &requestContext);
printf("[INFO] Sent configs to DEVICE:\twindow size->%d\n", winsize);
printf("[INFO] Total transfer size: %d\n", winsize * iterations);
printf("[INFO] Setup complete... starting benchmark...\n");
// now i begin the benchmark
unsigned long int filePosition = 0;
char *buffer = malloc(winsize);
gettimeofday(&start, NULL);
for (int i = 0; i < iterations; i++)
{ // skipping last iteration to change tag to tell server to stop reciving
fseek(dataSample, filePosition, SEEK_SET);
fread(buffer, winsize, 1, dataSample);
request_status = ucp_tag_send_nbx(endpoint, buffer, winsize, DATA_SEND_TAG, sendParam);
ucpWait(worker, request_status, &requestContext);
filePosition += winsize;
}
gettimeofday(&end, NULL);
double elapsedTime = (end.tv_sec + 0.000001 * end.tv_usec) - (start.tv_sec + 0.000001 * start.tv_usec);
double bandwidth = transferSize / elapsedTime;
printf("Completed!\n[RESULT] Time elapsed to send %ld bytes: \n\t%lf seconds.\n\tBandwidth= %.2lf MBytes/s (%.2lf Mbit/s)\n", transferSize, elapsedTime, bandwidth / (1024 * 1024), 8*bandwidth/1e6);
remove(__TEMP_FILE_NAME__);
}
else
{
printf("\n\nUsage ./benchmark [-s | -c <server_ip> <sendIterations> <window_size>]\n");
}
return 0;
}