626 lines
17 KiB
C
Executable File
626 lines
17 KiB
C
Executable File
#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <sys/mman.h>
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#include <mpi.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <sys/syscall.h> /* For SYS_xxx definitions */
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#include <sched.h>
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#include <errno.h>
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#include <psm2.h> /* required for core PSM2 functions */
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#include <psm2_mq.h> /* required for PSM2 MQ functions (send, recv, etc) */
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//#define DEBUG
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#ifdef DEBUG
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#define dprintf printf
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#else
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#define dprintf {}
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#endif
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#define BUFFER_LENGTH 8000000
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#define CONNECT_ARRAY_SIZE 8
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void die(char *msg, int rc) {
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fprintf(stderr, "%s: %d\n", msg, rc);
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}
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#define DIFFNSEC(end, start) ((end.tv_sec - start.tv_sec) * 1000000000UL + (end.tv_nsec - start.tv_nsec))
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static inline void fixed_size_work() {
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asm volatile(
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"movq $0, %%rcx\n\t"
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"1:\t"
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"addq $1, %%rcx\n\t"
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"cmpq $99, %%rcx\n\t"
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"jle 1b\n\t"
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:
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:
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: "rcx", "cc");
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}
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static inline void bulk_fsw(unsigned long n) {
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int j;
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for (j = 0; j < (n); j++) {
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fixed_size_work();
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}
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}
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double nspw; /* nsec per work */
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unsigned long nsec;
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void fwq_init() {
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struct timespec start, end;
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int i;
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clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
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#define N_INIT 10000000
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bulk_fsw(N_INIT);
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clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
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nsec = DIFFNSEC(end, start);
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nspw = nsec / (double)N_INIT;
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}
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#if 1
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void fwq(long delay_nsec) {
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if (delay_nsec < 0) {
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return;
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//printf("%s: delay_nsec < 0\n", __FUNCTION__);
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}
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bulk_fsw(delay_nsec / nspw);
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}
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#else /* For machines with large core-to-core performance variation (e.g. OFP) */
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void fwq(long delay_nsec) {
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struct timespec start, end;
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clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
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while (1) {
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clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
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if (DIFFNSEC(end, start) >= delay_nsec) {
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break;
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}
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bulk_fsw(2); /* ~150 ns per iteration on FOP */
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}
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}
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#endif
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static int print_cpu_last_executed_on() {
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char fn[256];
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char* result;
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pid_t tid = syscall(SYS_gettid);
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int fd;
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int offset;
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int mpi_errno = 0;
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sprintf(fn, "/proc/%d/task/%d/stat", getpid(), (int)tid);
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//printf("fn=%s\n", fn);
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fd = open(fn, O_RDONLY);
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if(fd == -1) {
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printf("open() failed\n");
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goto fn_fail;
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}
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result = malloc(65536);
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if(result == NULL) {
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printf("malloc() failed");
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goto fn_fail;
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}
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int amount = 0;
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offset = 0;
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while(1) {
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amount = read(fd, result + offset, 65536);
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// printf("amount=%d\n", amount);
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if(amount == -1) {
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printf("read() failed");
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goto fn_fail;
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}
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if(amount == 0) {
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goto eof;
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}
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offset += amount;
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}
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eof:;
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//printf("result:%s\n", result);
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char* next_delim = result;
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char* field;
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int i;
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for(i = 0; i < 39; i++) {
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field = strsep(&next_delim, " ");
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}
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int cpu = sched_getcpu();
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if(cpu == -1) {
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printf("getpu() failed\n");
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goto fn_fail;
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}
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printf("compute thread,pmi_rank=%02d,stat-cpu=%02d,sched_getcpu=%02d,pid=%d,tid=%d\n", atoi(getenv("PMI_RANK")), atoi(field), cpu, getpid(), tid); fflush(stdout);
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fn_exit:
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free(result);
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return mpi_errno;
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fn_fail:
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mpi_errno = -1;
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goto fn_exit;
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}
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static inline int on_same_node(int ppn, int me, int you) {
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return (me / ppn == you / ppn);
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}
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/* isend-calc-wait */
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void my_send(int nproc, int ppn, int rank, double *sbuf, double *rbuf, int ndoubles, MPI_Request* reqs, long calc_nsec) {
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int i;
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int r = 0, s = 0;
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int req = 0;
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for (i = 0; i < nproc; i++) {
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if (!on_same_node(ppn, rank, i)) {
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MPI_Irecv(rbuf + r * ndoubles, ndoubles, MPI_DOUBLE, i, 0, MPI_COMM_WORLD, &reqs[req]);
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r++;
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req++;
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MPI_Isend(sbuf + s * ndoubles, ndoubles, MPI_DOUBLE, i, 0, MPI_COMM_WORLD, &reqs[req]);
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s++;
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req++;
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}
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}
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fwq(calc_nsec);
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MPI_Waitall(req, reqs, MPI_STATUSES_IGNORE);
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}
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/* Helper functions to find the server's PSM2 endpoint identifier (epid). */
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psm2_epid_t find_server(int rank) {
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FILE *fp = NULL;
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psm2_epid_t server_epid = 0;
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char fn[256];
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sprintf(fn, "psm2-demo-server-epid-%d", rank);
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printf("PSM2 client waiting for epid mapping file to appear...\n");
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while (!fp) {
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sleep(1);
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fp = fopen(fn, "r");
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}
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fscanf(fp, "%lx", &server_epid);
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fclose(fp);
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printf("PSM2 client found server epid = 0x%lx\n", server_epid);
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return server_epid;
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}
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void write_epid_to_file(int rank, psm2_epid_t myepid) {
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FILE *fp;
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char fn[256];
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sprintf(fn, "psm2-demo-server-epid-%d", rank);
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fp = fopen(fn, "w");
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if (!fp) {
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fprintf(stderr,
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"Exiting, couldn't write server's epid mapping file: ");
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die(strerror(errno), errno);
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}
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fprintf(fp, "0x%lx", myepid);
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fclose(fp);
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printf("PSM2 server wrote epid = 0x%lx to file.\n", myepid);
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return;
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}
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int psm2_sendrecv(int rank, int sender, int receiver) {
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struct psm2_ep_open_opts o;
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psm2_uuid_t uuid; /* 16 byte */
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psm2_ep_t myep;
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psm2_epid_t myepid;
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psm2_epid_t server_epid;
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psm2_epid_t epid_array[CONNECT_ARRAY_SIZE];
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int epid_array_mask[CONNECT_ARRAY_SIZE];
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psm2_error_t epid_connect_errors[CONNECT_ARRAY_SIZE];
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psm2_epaddr_t epaddr_array[CONNECT_ARRAY_SIZE];
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int rc;
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int ver_major = PSM2_VERNO_MAJOR;
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int ver_minor = PSM2_VERNO_MINOR;
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char msgbuf[BUFFER_LENGTH];
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psm2_mq_t q;
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psm2_mq_req_t req_mq;
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memset(uuid, 0, sizeof(psm2_uuid_t)); /* Use a UUID of zero */
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*((int *)&uuid) = rand();
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/* Try to initialize PSM2 with the requested library version.
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* * In this example, given the use of the PSM2_VERNO_MAJOR and MINOR
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* * as defined in the PSM2 headers, ensure that we are linking with
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* * the same version of PSM2 as we compiled against. */
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if ((rc = psm2_init(&ver_major, &ver_minor)) != PSM2_OK) {
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die("couldn't init", rc);
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return -1;
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}
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printf("PSM2 init done.\n");
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/* Setup the endpoint options struct */
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if ((rc = psm2_ep_open_opts_get_defaults(&o)) != PSM2_OK) {
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die("couldn't set default opts", rc);
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return -1;
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}
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printf("PSM2 opts_get_defaults done.\n");
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/* Attempt to open a PSM2 endpoint. This allocates hardware resources. */
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if ((rc = psm2_ep_open(uuid, &o, &myep, &myepid)) != PSM2_OK) {
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die("couldn't psm2_ep_open()", rc);
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return -1;
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}
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printf("PSM2 endpoint open done.\n");
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int is_server = (rank == receiver) ? 1 : 0;
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if (is_server) {
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write_epid_to_file(rank, myepid);
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} else {
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server_epid = find_server(receiver);
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}
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if (is_server) {
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/* Server does nothing here. A connection does not have to be
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* * established to receive messages. */
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printf("PSM2 server up.\n");
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} else {
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/* Setup connection request info */
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/* PSM2 can connect to a single epid per request,
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* * or an arbitrary number of epids in a single connect call.
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* * For this example, use part of an array of
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* * connection requests. */
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memset(epid_array_mask, 0, sizeof(int) * CONNECT_ARRAY_SIZE);
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epid_array[0] = server_epid;
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epid_array_mask[0] = 1;
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/* Begin the connection process.
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* * note that if a requested epid is not responding,
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* * the connect call will still return OK.
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* * The errors array will contain the state of individual
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* * connection requests. */
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if ((rc = psm2_ep_connect(myep,
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CONNECT_ARRAY_SIZE,
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epid_array,
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epid_array_mask,
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epid_connect_errors,
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epaddr_array,
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0 /* no timeout */
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)) != PSM2_OK) {
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die("couldn't ep_connect", rc);
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return -1;
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}
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printf("PSM2 connect request processed.\n");
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/* Now check if our connection to the server is ready */
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if (epid_connect_errors[0] != PSM2_OK) {
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die("couldn't connect to server",
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epid_connect_errors[0]);
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return -1;
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}
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printf("PSM2 client-server connection established.\n");
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}
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/* Setup our PSM2 message queue */
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if ((rc = psm2_mq_init(myep, PSM2_MQ_ORDERMASK_NONE, NULL, 0, &q))
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!= PSM2_OK) {
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die("couldn't initialize PSM2 MQ", rc);
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return -1;
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}
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printf("PSM2 MQ init done.\n");
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if (is_server) {
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psm2_mq_tag_t t = {0xABCD};
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psm2_mq_tag_t tm = {-1};
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/* Post the receive request */
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if ((rc = psm2_mq_irecv2(q, PSM2_MQ_ANY_ADDR,
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&t, /* message tag */
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&tm, /* message tag mask */
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0, /* no flags */
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msgbuf, BUFFER_LENGTH,
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NULL, /* no context to add */
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&req_mq /* track irecv status */
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)) != PSM2_OK) {
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die("couldn't post psm2_mq_irecv()", rc);
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return -1;
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}
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printf("PSM2 MQ irecv() posted\n");
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/* Wait until the message arrives */
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if ((rc = psm2_mq_wait(&req_mq, NULL)) != PSM2_OK) {
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die("couldn't wait for the irecv", rc);
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return -1;
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}
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printf("PSM2 MQ wait() done.\n");
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printf("Message from client:\n");
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printf("%s", msgbuf);
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unlink("psm2-demo-server-epid");
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} else {
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/* Say hello */
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snprintf(msgbuf, BUFFER_LENGTH,
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"Hello world from epid=0x%lx, pid=%d.\n",
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myepid, getpid());
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psm2_mq_tag_t t = {0xABCD};
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if ((rc = psm2_mq_send2(q,
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epaddr_array[0], /* destination epaddr */
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PSM2_MQ_FLAG_SENDSYNC, /* no flags */
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&t, /* tag */
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msgbuf, BUFFER_LENGTH
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)) != PSM2_OK) {
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die("couldn't post psm2_mq_isend", rc);
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return -1;
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}
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printf("PSM2 MQ send() done.\n");
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}
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/* Close down the MQ */
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if ((rc = psm2_mq_finalize(q)) != PSM2_OK) {
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die("couldn't psm2_mq_finalize()", rc);
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return -1;
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}
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printf("PSM2 MQ finalized.\n");
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/* Close our ep, releasing all hardware resources.
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* * Try to close all connections properly */
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if ((rc = psm2_ep_close(myep, PSM2_EP_CLOSE_GRACEFUL,
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0 /* no timeout */)) != PSM2_OK) {
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die("couldn't psm2_ep_close()", rc);
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return -1;
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}
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printf("PSM2 ep closed.\n");
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/* Release all local PSM2 resources */
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if ((rc = psm2_finalize()) != PSM2_OK) {
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die("couldn't psm2_finalize()", rc);
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return -1;
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}
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printf("PSM2 shut down, exiting.\n");
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return 0;
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}
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static struct option options[] = {
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{
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.name = "ppn",
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.has_arg = required_argument,
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.flag = NULL,
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.val = 'P',
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},
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/* end */
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{ NULL, 0, NULL, 0, },
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};
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struct thr_arg {
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volatile int bar_count; /* Barrier before entering loop */
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pthread_mutex_t bar_lock;
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pthread_cond_t bar_cond;
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pthread_t pthread;
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int rank;
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int ppn;
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int nproc;
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};
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struct thr_arg thr_arg;
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void *progress_fn(void *arg) {
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struct thr_arg *thr_arg = (struct thr_arg *)arg;
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int rc;
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int i;
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rc = syscall(732);
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if (rc == -1)
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fprintf(stdout, "CT09100 progress_fn running on Linux OK\n");
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else {
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fprintf(stdout, "CT09100 progress_fn running on McKernel NG (%d)\n", rc);
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}
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printf("progress,enter\n");
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/* barrier */
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pthread_mutex_lock(&thr_arg->bar_lock);
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thr_arg->bar_count++;
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if (thr_arg->bar_count == 2) {
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if ((rc = pthread_cond_broadcast(&thr_arg->bar_cond))) {
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printf("pthread_cond_broadcast failed,rc=%d\n", rc);
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}
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}
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while (thr_arg->bar_count != 2) {
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if ((rc = pthread_cond_wait(&thr_arg->bar_cond, &thr_arg->bar_lock))) {
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printf("pthread_cond_wait failed,rc=%d\n", rc);
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}
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}
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pthread_mutex_unlock(&thr_arg->bar_lock);
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#if 0
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printf("progress,after barrier\n");
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for (i = 0; i < thr_arg->nproc; i++) {
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if (!on_same_node(thr_arg->ppn, thr_arg->rank, i)) {
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if (thr_arg->rank < i) {
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psm2_sendrecv(thr_arg->rank, thr_arg->rank, i);
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} else {
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psm2_sendrecv(thr_arg->rank, i, thr_arg->rank);
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}
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}
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}
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#endif
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/* barrier */
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pthread_mutex_lock(&thr_arg->bar_lock);
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thr_arg->bar_count--;
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if (thr_arg->bar_count == 0) {
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if ((rc = pthread_cond_broadcast(&thr_arg->bar_cond))) {
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printf("pthread_cond_broadcast failed,rc=%d\n", rc);
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}
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}
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while (thr_arg->bar_count != 0) {
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if ((rc = pthread_cond_wait(&thr_arg->bar_cond, &thr_arg->bar_lock))) {
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printf("pthread_cond_wait failed,rc=%d\n", rc);
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}
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}
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pthread_mutex_unlock(&thr_arg->bar_lock);
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printf("progress,exit\n");
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return NULL;
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}
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int main(int argc, char **argv) {
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int rc;
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int actual;
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int nproc;
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int ppn = -1;
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int ndoubles = -1;
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int my_rank = -1, size = -1;
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int i, j;
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double *sbuf, *rbuf;
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MPI_Request* reqs;
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struct timespec start, end;
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long t_pure_l, t_overall_l;
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long t_pure, t_overall;
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int opt;
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pthread_condattr_t condattr;
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pthread_mutexattr_t mutexattr;
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fwq_init();
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while ((opt = getopt_long(argc, argv, "+d:P:", options, NULL)) != -1) {
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switch (opt) {
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case 'd':
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ndoubles = (1ULL << atoi(optarg));
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break;
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case 'P':
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ppn = atoi(optarg);
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break;
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default: /* '?' */
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printf("unknown option %c\n", optopt);
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exit(1);
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}
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}
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if (ndoubles == -1 || ppn == -1) {
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printf("specify ndoubles with -d and ppn with --ppn");
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exit(1);
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}
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MPI_Init_thread(&argc, &argv, MPI_THREAD_MULTIPLE, &actual);
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if (actual != 3) {
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printf("ERROR: Thread support level is %d (it should be 3)\n", actual);
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exit(1);
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}
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MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
|
|
MPI_Comm_size(MPI_COMM_WORLD, &nproc);
|
|
|
|
if (my_rank == 0) {
|
|
printf("tid=%d,pid=%d,ndoubles=%d,nproc=%d\n", syscall(__NR_gettid), getpid(), ndoubles, nproc);
|
|
printf("nsec=%ld, nspw=%f\n", nsec, nspw);
|
|
}
|
|
|
|
/* Spawn a thread */
|
|
thr_arg.rank = my_rank;
|
|
thr_arg.ppn = ppn;
|
|
thr_arg.nproc = nproc;
|
|
thr_arg.bar_count = 0;
|
|
|
|
pthread_condattr_init(&condattr);
|
|
pthread_cond_init(&thr_arg.bar_cond, &condattr);
|
|
|
|
pthread_mutexattr_init(&mutexattr);
|
|
pthread_mutex_init(&thr_arg.bar_lock, &mutexattr);
|
|
|
|
char *uti_str = getenv("DISABLE_UTI");
|
|
int uti_val = uti_str ? atoi(uti_str) : 0;
|
|
if (!uti_val) {
|
|
rc = syscall(731, 1, NULL);
|
|
if (rc) {
|
|
fprintf(stdout, "CT09003 INFO: uti not available (rc=%d)\n", rc);
|
|
} else {
|
|
fprintf(stdout, "CT09003 INFO: uti available\n");
|
|
}
|
|
} else {
|
|
fprintf(stdout, "CT09003 INFO: uti disabled\n");
|
|
}
|
|
|
|
rc = pthread_create(&thr_arg.pthread, NULL, progress_fn, &thr_arg);
|
|
if (rc){
|
|
fprintf(stdout, "pthread_create: %d\n", rc);
|
|
exit(1);
|
|
}
|
|
|
|
/* barrier */
|
|
pthread_mutex_lock(&thr_arg.bar_lock);
|
|
thr_arg.bar_count++;
|
|
if (thr_arg.bar_count == 2) {
|
|
if ((rc = pthread_cond_broadcast(&thr_arg.bar_cond))) {
|
|
printf("pthread_cond_broadcast failed,rc=%d\n", rc);
|
|
}
|
|
}
|
|
while (thr_arg.bar_count != 2) {
|
|
if ((rc = pthread_cond_wait(&thr_arg.bar_cond, &thr_arg.bar_lock))) {
|
|
printf("pthread_cond_wait failed,rc=%d\n", rc);
|
|
}
|
|
}
|
|
pthread_mutex_unlock(&thr_arg.bar_lock);
|
|
|
|
printf("parent,after barrier\n");
|
|
|
|
|
|
reqs = (MPI_Request*)malloc(sizeof(MPI_Request) * nproc * 2);
|
|
if(!reqs) { printf("malloc failed"); goto fn_fail; }
|
|
|
|
sbuf = malloc(sizeof(double) * ndoubles * nproc);
|
|
if(!sbuf) { printf("malloc failed"); goto fn_fail; }
|
|
memset(sbuf, 0, sizeof(double) * ndoubles);
|
|
printf("tid=%d,pid=%d,sbuf=%p\n", syscall(__NR_gettid), getpid(), sbuf);
|
|
|
|
rbuf = malloc(sizeof(double) * ndoubles * nproc);
|
|
if(!rbuf) { printf("malloc failed"); goto fn_fail; }
|
|
memset(rbuf, 0, sizeof(double) * ndoubles);
|
|
printf("tid=%d,pid=%d,rbuf=%p\n", syscall(__NR_gettid), getpid(), rbuf);
|
|
|
|
print_cpu_last_executed_on();
|
|
|
|
/* Measure isend-wait time */
|
|
MPI_Barrier(MPI_COMM_WORLD);
|
|
#define NSKIP 5
|
|
#define NPURE 30
|
|
for (i = 0; i < NPURE + NSKIP; i++) {
|
|
if (i == NSKIP) {
|
|
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
|
|
}
|
|
my_send(nproc, ppn, my_rank, sbuf, rbuf, ndoubles, reqs, 0);
|
|
}
|
|
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
|
|
t_pure_l = DIFFNSEC(end, start) / NPURE;
|
|
//printf("t_pure (local): %ld usec\n", t_pure_l / 1000UL);
|
|
MPI_Allreduce(&t_pure_l, &t_pure, 1, MPI_LONG, MPI_MAX, MPI_COMM_WORLD);
|
|
if (my_rank == 0) printf("t_pure (max): %ld usec\n", t_pure / 1000UL);
|
|
|
|
/* Measure isend-calc-wait time */
|
|
MPI_Barrier(MPI_COMM_WORLD);
|
|
#define NOVERALL 30
|
|
for (i = 0; i < NOVERALL + NSKIP; i++) {
|
|
if (i == NSKIP) {
|
|
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
|
|
}
|
|
my_send(nproc, ppn, my_rank, sbuf, rbuf, ndoubles, reqs, t_pure);
|
|
}
|
|
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
|
|
t_overall_l = DIFFNSEC(end, start) / NOVERALL;
|
|
//printf("t_overall (local): %ld usec\n", t_overall_l / 1000UL);
|
|
MPI_Allreduce(&t_overall_l, &t_overall, 1, MPI_LONG, MPI_MAX, MPI_COMM_WORLD);
|
|
if (my_rank == 0) printf("t_overall (max): %ld usec\n", t_overall / 1000UL);
|
|
if (my_rank == 0) {
|
|
long t_abs = (t_pure * 2) - t_overall;
|
|
printf("overlap: %.2f %%\n", (t_abs * 100) / (double)t_pure);
|
|
}
|
|
|
|
/* barrier */
|
|
pthread_mutex_lock(&thr_arg.bar_lock);
|
|
thr_arg.bar_count--;
|
|
if (thr_arg.bar_count == 0) {
|
|
if ((rc = pthread_cond_broadcast(&thr_arg.bar_cond))) {
|
|
printf("pthread_cond_broadcast failed,rc=%d\n", rc);
|
|
}
|
|
}
|
|
while (thr_arg.bar_count != 0) {
|
|
if ((rc = pthread_cond_wait(&thr_arg.bar_cond, &thr_arg.bar_lock))) {
|
|
printf("pthread_cond_wait failed,rc=%d\n", rc);
|
|
}
|
|
}
|
|
pthread_mutex_unlock(&thr_arg.bar_lock);
|
|
|
|
|
|
pthread_join(thr_arg.pthread, NULL);
|
|
|
|
fn_exit:
|
|
MPI_Finalize();
|
|
return 0;
|
|
fn_fail:
|
|
goto fn_exit;
|
|
}
|