コード例 #1
0
static HYD_status fn_spawn(int fd, int pid, int pgid, char *args[])
{
    struct HYD_pg *pg;
    struct HYD_pmcd_pmi_pg_scratch *pg_scratch;
    struct HYD_proxy *proxy;
    struct HYD_pmcd_token *tokens;
    struct HYD_exec *exec_list = NULL, *exec;
    struct HYD_env *env;
    struct HYD_node *node;

    char key[PMI_MAXKEYLEN], *val;
    int nprocs, preput_num, info_num, ret;
    char *execname, *path = NULL;

    struct HYD_pmcd_token_segment *segment_list = NULL;

    int token_count, i, j, k, new_pgid, total_spawns;
    int argcnt, num_segments;
    char *control_port, *proxy_args[HYD_NUM_TMP_STRINGS] = { NULL };
    char *tmp[HYD_NUM_TMP_STRINGS];
    HYD_status status = HYD_SUCCESS;

    HYDU_FUNC_ENTER();

    for (i = 0; args[i]; i++)
        mcmd_args[mcmd_num_args++] = HYDU_strdup(args[i]);
    mcmd_args[mcmd_num_args] = NULL;

    status = HYD_pmcd_pmi_args_to_tokens(mcmd_args, &tokens, &token_count);
    HYDU_ERR_POP(status, "unable to convert args to tokens\n");


    /* Here's the order of things we do:
     *
     *   1. Break the token list into multiple segments, each segment
     *      corresponding to a command. Each command represents
     *      information for one executable.
     *
     *   2. Allocate a process group for the new set of spawned
     *      processes
     *
     *   3. Get all the common keys and deal with them
     *
     *   4. Create an executable list based on the segments.
     *
     *   5. Create a proxy list using the created executable list and
     *      spawn it.
     */

    /* Break the token list into multiple segments and create an
     * executable list based on the segments. */
    val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, "totspawns");
    HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                        "unable to find token: totspawns\n");
    total_spawns = atoi(val);

    HYDU_MALLOC(segment_list, struct HYD_pmcd_token_segment *,
                total_spawns * sizeof(struct HYD_pmcd_token_segment), status);

    segment_tokens(tokens, token_count, segment_list, &num_segments);

    if (num_segments != total_spawns) {
        /* We didn't read the entire PMI string; wait for the rest to
         * arrive */
        goto fn_exit;
    }
    else {
        /* Got the entire PMI string; free the arguments and reset */
        HYDU_free_strlist(mcmd_args);
        mcmd_num_args = 0;
    }

    /* Allocate a new process group */
    for (pg = &HYD_server_info.pg_list; pg->next; pg = pg->next);
    new_pgid = pg->pgid + 1;

    status = HYDU_alloc_pg(&pg->next, new_pgid);
    HYDU_ERR_POP(status, "unable to allocate process group\n");

    pg = pg->next;

    proxy = HYD_pmcd_pmi_find_proxy(fd);
    HYDU_ASSERT(proxy, status);

    pg->spawner_pg = proxy->pg;

    for (j = 0; j < total_spawns; j++) {
        /* For each segment, we create an exec structure */
        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "nprocs");
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: nprocs\n");
        nprocs = atoi(val);
        pg->pg_process_count += nprocs;

        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "argcnt");
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: argcnt\n");
        argcnt = atoi(val);

        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "info_num");
        if (val)
            info_num = atoi(val);
        else
            info_num = 0;

        if (exec_list == NULL) {
            status = HYDU_alloc_exec(&exec_list);
            HYDU_ERR_POP(status, "unable to allocate exec\n");
            exec_list->appnum = 0;
            exec = exec_list;
        }
        else {
            for (exec = exec_list; exec->next; exec = exec->next);
            status = HYDU_alloc_exec(&exec->next);
            HYDU_ERR_POP(status, "unable to allocate exec\n");
            exec->next->appnum = exec->appnum + 1;
            exec = exec->next;
        }

        /* Info keys */
        for (i = 0; i < info_num; i++) {
            char *info_key, *info_val;

            HYDU_snprintf(key, PMI_MAXKEYLEN, "info_key_%d", i);
            val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                                 segment_list[j].token_count, key);
            HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                                "unable to find token: %s\n", key);
            info_key = val;

            HYDU_snprintf(key, PMI_MAXKEYLEN, "info_val_%d", i);
            val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                                 segment_list[j].token_count, key);
            HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                                "unable to find token: %s\n", key);
            info_val = val;

            if (!strcmp(info_key, "path")) {
                path = HYDU_strdup(info_val);
            }
            else if (!strcmp(info_key, "wdir")) {
                exec->wdir = HYDU_strdup(info_val);
            }
            else if (!strcmp(info_key, "host")) {
                status = HYDU_process_mfile_token(info_val, 1, &pg->user_node_list);
                HYDU_ERR_POP(status, "error create node list\n");
            }
            else if (!strcmp(info_key, "hostfile")) {
                status =
                    HYDU_parse_hostfile(info_val, &pg->user_node_list, HYDU_process_mfile_token);
                HYDU_ERR_POP(status, "error parsing hostfile\n");
            }
            else {
                /* Unrecognized info key; ignore */
            }
        }

        status = HYDU_correct_wdir(&exec->wdir);
        HYDU_ERR_POP(status, "unable to correct wdir\n");

        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "execname");
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: execname\n");
        if (path == NULL)
            execname = HYDU_strdup(val);
        else {
            i = 0;
            tmp[i++] = HYDU_strdup(path);
            tmp[i++] = HYDU_strdup("/");
            tmp[i++] = HYDU_strdup(val);
            tmp[i++] = NULL;

            status = HYDU_str_alloc_and_join(tmp, &execname);
            HYDU_ERR_POP(status, "error while joining strings\n");
            HYDU_free_strlist(tmp);
        }

        i = 0;
        exec->exec[i++] = execname;
        for (k = 0; k < argcnt; k++) {
            HYDU_snprintf(key, PMI_MAXKEYLEN, "arg%d", k + 1);
            val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                                 segment_list[j].token_count, key);
            HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                                "unable to find token: %s\n", key);
            exec->exec[i++] = HYDU_strdup(val);
        }
        exec->exec[i++] = NULL;

        exec->proc_count = nprocs;

        /* It is not clear what kind of environment needs to get
         * passed to the spawned process. Don't set anything here, and
         * let the proxy do whatever it does by default. */
        exec->env_prop = NULL;

        status = HYDU_env_create(&env, "PMI_SPAWNED", "1");
        HYDU_ERR_POP(status, "unable to create PMI_SPAWNED environment\n");
        exec->user_env = env;
    }

    status = HYD_pmcd_pmi_alloc_pg_scratch(pg);
    HYDU_ERR_POP(status, "unable to allocate pg scratch space\n");

    if (pg->user_node_list) {
        pg->pg_core_count = 0;
        for (i = 0, node = pg->user_node_list; node; node = node->next, i++) {
            pg->pg_core_count += node->core_count;
            node->node_id = i;
        }
    }
    else {
        pg->pg_core_count = HYD_server_info.pg_list.pg_core_count;
    }

    pg->pg_process_count = 0;
    for (exec = exec_list; exec; exec = exec->next)
        pg->pg_process_count += exec->proc_count;

    pg_scratch = (struct HYD_pmcd_pmi_pg_scratch *) pg->pg_scratch;

    /* Get the common keys and deal with them */
    val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, "preput_num");
    if (val)
        preput_num = atoi(val);
    else
        preput_num = 0;

    for (i = 0; i < preput_num; i++) {
        char *preput_key, *preput_val;

        HYDU_snprintf(key, PMI_MAXKEYLEN, "preput_key_%d", i);
        val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, key);
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: %s\n", key);
        preput_key = val;

        HYDU_snprintf(key, PMI_MAXKEYLEN, "preput_val_%d", i);
        val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, key);
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: %s\n", key);
        preput_val = val;

        status = HYD_pmcd_pmi_add_kvs(preput_key, preput_val, pg_scratch->kvs, &ret);
        HYDU_ERR_POP(status, "unable to add keypair to kvs\n");
    }

    /* Create the proxy list */
    if (pg->user_node_list) {
        status = HYDU_create_proxy_list(exec_list, pg->user_node_list, pg);
        HYDU_ERR_POP(status, "error creating proxy list\n");
    }
    else {
        status = HYDU_create_proxy_list(exec_list, HYD_server_info.node_list, pg);
        HYDU_ERR_POP(status, "error creating proxy list\n");
    }
    HYDU_free_exec_list(exec_list);

    status = HYDU_sock_create_and_listen_portstr(HYD_server_info.user_global.iface,
                                                 HYD_server_info.local_hostname,
                                                 HYD_server_info.port_range, &control_port,
                                                 HYD_pmcd_pmiserv_control_listen_cb,
                                                 (void *) (size_t) new_pgid);
    HYDU_ERR_POP(status, "unable to create PMI port\n");
    if (HYD_server_info.user_global.debug)
        HYDU_dump(stdout, "Got a control port string of %s\n", control_port);

    /* Go to the last PG */
    for (pg = &HYD_server_info.pg_list; pg->next; pg = pg->next);

    status = HYD_pmcd_pmi_fill_in_proxy_args(proxy_args, control_port, new_pgid);
    HYDU_ERR_POP(status, "unable to fill in proxy arguments\n");
    HYDU_FREE(control_port);

    status = HYD_pmcd_pmi_fill_in_exec_launch_info(pg);
    HYDU_ERR_POP(status, "unable to fill in executable arguments\n");

    status = HYDT_bsci_launch_procs(proxy_args, pg->proxy_list, NULL);
    HYDU_ERR_POP(status, "launcher cannot launch processes\n");

    {
        char *cmd_str[HYD_NUM_TMP_STRINGS], *cmd;

        i = 0;
        cmd_str[i++] = HYDU_strdup("cmd=spawn_result rc=0");
        cmd_str[i++] = HYDU_strdup("\n");
        cmd_str[i++] = NULL;

        status = HYDU_str_alloc_and_join(cmd_str, &cmd);
        HYDU_ERR_POP(status, "unable to join strings\n");
        HYDU_free_strlist(cmd_str);

        status = cmd_response(fd, pid, cmd);
        HYDU_ERR_POP(status, "error writing PMI line\n");
        HYDU_FREE(cmd);
    }

  fn_exit:
    HYD_pmcd_pmi_free_tokens(tokens, token_count);
    HYDU_free_strlist(proxy_args);
    if (segment_list)
        HYDU_FREE(segment_list);
    HYDU_FUNC_EXIT();
    return status;

  fn_fail:
    goto fn_exit;
}
コード例 #2
0
ファイル: pmiserv_pmi_v2.c プロジェクト: Niharikareddy/mpich
static HYD_status fn_spawn(int fd, int pid, int pgid, char *args[])
{
    struct HYD_pg *pg;
    struct HYD_pmcd_pmi_pg_scratch *pg_scratch;
    struct HYD_proxy *proxy;
    struct HYD_pmcd_token *tokens;
    struct HYD_exec *exec_list = NULL, *exec;
    struct HYD_env *env;
    struct HYD_node *node;

    char *thrid;
    char key[PMI_MAXKEYLEN], *val;
    int maxprocs, preputcount, infokeycount, ret;
    int ncmds;
    char *execname, *path = NULL;

    struct HYD_pmcd_token_segment *segment_list = NULL;

    int token_count, i, j, k, new_pgid;
    int argcnt, num_segments;
    struct HYD_string_stash proxy_stash;
    char *control_port;
    struct HYD_string_stash stash;
    HYD_status status = HYD_SUCCESS;

    HYDU_FUNC_ENTER();

    status = HYD_pmcd_pmi_args_to_tokens(args, &tokens, &token_count);
    HYDU_ERR_POP(status, "unable to convert args to tokens\n");

    thrid = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, "thrid");


    /* Here's the order of things we do:
     *
     *   1. Break the token list into multiple segments, each segment
     *      corresponding to a command. Each command represents
     *      information for one executable.
     *
     *   2. Allocate a process group for the new set of spawned
     *      processes
     *
     *   3. Get all the common keys and deal with them
     *
     *   4. Create an executable list based on the segments.
     *
     *   5. Create a proxy list using the created executable list and
     *      spawn it.
     */

    val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, "ncmds");
    HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR, "unable to find token: ncmds\n");
    ncmds = atoi(val);

    HYDU_MALLOC(segment_list, struct HYD_pmcd_token_segment *,
                (ncmds + 1) * sizeof(struct HYD_pmcd_token_segment), status);
    segment_tokens(tokens, token_count, segment_list, &num_segments);
    HYDU_ASSERT((ncmds + 1) == num_segments, status);


    /* Allocate a new process group */
    for (pg = &HYD_server_info.pg_list; pg->next; pg = pg->next);
    new_pgid = pg->pgid + 1;

    status = HYDU_alloc_pg(&pg->next, new_pgid);
    HYDU_ERR_POP(status, "unable to allocate process group\n");

    pg = pg->next;

    proxy = HYD_pmcd_pmi_find_proxy(fd);
    HYDU_ASSERT(proxy, status);

    pg->spawner_pg = proxy->pg;

    for (j = 1; j <= ncmds; j++) {
        /* For each segment, we create an exec structure */
        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "maxprocs");
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: maxprocs\n");
        maxprocs = atoi(val);
        pg->pg_process_count += maxprocs;

        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "argc");
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: argc\n");
        argcnt = atoi(val);

        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "infokeycount");
        if (val)
            infokeycount = atoi(val);
        else
            infokeycount = 0;

        if (exec_list == NULL) {
            status = HYDU_alloc_exec(&exec_list);
            HYDU_ERR_POP(status, "unable to allocate exec\n");
            exec_list->appnum = 0;
            exec = exec_list;
        }
        else {
            for (exec = exec_list; exec->next; exec = exec->next);
            status = HYDU_alloc_exec(&exec->next);
            HYDU_ERR_POP(status, "unable to allocate exec\n");
            exec->next->appnum = exec->appnum + 1;
            exec = exec->next;
        }

        /* Info keys */
        for (i = 0; i < infokeycount; i++) {
            char *info_key, *info_val;

            HYDU_snprintf(key, PMI_MAXKEYLEN, "infokey%d", i);
            val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                                 segment_list[j].token_count, key);
            HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                                "unable to find token: %s\n", key);
            info_key = val;

            HYDU_snprintf(key, PMI_MAXKEYLEN, "infoval%d", i);
            val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                                 segment_list[j].token_count, key);
            HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                                "unable to find token: %s\n", key);
            info_val = val;

            if (!strcmp(info_key, "path")) {
                path = HYDU_strdup(info_val);
            }
            else if (!strcmp(info_key, "wdir")) {
                exec->wdir = HYDU_strdup(info_val);
            }
            else if (!strcmp(info_key, "host") || !strcmp(info_key, "hosts")) {
                char *host = strtok(info_val, ",");
                while (host) {
                    status = HYDU_process_mfile_token(host, 1, &pg->user_node_list);
                    HYDU_ERR_POP(status, "error creating node list\n");
                    host = strtok(NULL, ",");
                }
            }
            else if (!strcmp(info_key, "hostfile")) {
                status = HYDU_parse_hostfile(info_val, &pg->user_node_list,
                                             HYDU_process_mfile_token);
                HYDU_ERR_POP(status, "error parsing hostfile\n");
            }
            else {
                /* Unrecognized info key; ignore */
            }
        }

        status = HYDU_correct_wdir(&exec->wdir);
        HYDU_ERR_POP(status, "unable to correct wdir\n");

        val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                             segment_list[j].token_count, "subcmd");
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: subcmd\n");
        if (path == NULL)
            execname = HYDU_strdup(val);
        else {
            HYD_STRING_STASH_INIT(stash);
            HYD_STRING_STASH(stash, HYDU_strdup(path), status);
            HYD_STRING_STASH(stash, HYDU_strdup("/"), status);
            HYD_STRING_STASH(stash, HYDU_strdup(val), status);

            HYD_STRING_SPIT(stash, execname, status);
        }

        i = 0;
        exec->exec[i++] = execname;
        for (k = 0; k < argcnt; k++) {
            HYDU_snprintf(key, PMI_MAXKEYLEN, "argv%d", k);
            val = HYD_pmcd_pmi_find_token_keyval(&tokens[segment_list[j].start_idx],
                                                 segment_list[j].token_count, key);
            HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                                "unable to find token: %s\n", key);
            exec->exec[i++] = HYDU_strdup(val);
        }
        exec->exec[i++] = NULL;

        exec->proc_count = maxprocs;

        /* It is not clear what kind of environment needs to get
         * passed to the spawned process. Don't set anything here, and
         * let the proxy do whatever it does by default. */
        exec->env_prop = NULL;

        status = HYDU_env_create(&env, "PMI_SPAWNED", "1");
        HYDU_ERR_POP(status, "unable to create PMI_SPAWNED environment\n");
        exec->user_env = env;
    }

    status = HYD_pmcd_pmi_alloc_pg_scratch(pg);
    HYDU_ERR_POP(status, "unable to allocate pg scratch space\n");

    pg->pg_process_count = 0;
    for (exec = exec_list; exec; exec = exec->next)
        pg->pg_process_count += exec->proc_count;

    pg_scratch = (struct HYD_pmcd_pmi_pg_scratch *) pg->pg_scratch;

    /* Get the common keys and deal with them */
    val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, "preputcount");
    HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                        "unable to find token: preputcount\n");
    preputcount = atoi(val);

    for (i = 0; i < preputcount; i++) {
        char *preput_key, *preput_val;

        HYDU_snprintf(key, PMI_MAXKEYLEN, "ppkey%d", i);
        val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, key);
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: %s\n", key);
        preput_key = val;

        HYDU_snprintf(key, PMI_MAXKEYLEN, "ppval%d", i);
        val = HYD_pmcd_pmi_find_token_keyval(tokens, token_count, key);
        HYDU_ERR_CHKANDJUMP(status, val == NULL, HYD_INTERNAL_ERROR,
                            "unable to find token: %s\n", key);
        preput_val = val;

        status = HYD_pmcd_pmi_add_kvs(preput_key, preput_val, pg_scratch->kvs, &ret);
        HYDU_ERR_POP(status, "unable to add keypair to kvs\n");
    }

    /* Create the proxy list */
    if (pg->user_node_list) {
        status = HYDU_create_proxy_list(exec_list, pg->user_node_list, pg);
        HYDU_ERR_POP(status, "error creating proxy list\n");
    }
    else {
        status = HYDU_create_proxy_list(exec_list, HYD_server_info.node_list, pg);
        HYDU_ERR_POP(status, "error creating proxy list\n");
    }
    HYDU_free_exec_list(exec_list);

    if (pg->user_node_list) {
        pg->pg_core_count = 0;
        for (i = 0, node = pg->user_node_list; node; node = node->next, i++)
            pg->pg_core_count += node->core_count;
    }
    else {
        pg->pg_core_count = 0;
        for (proxy = pg->proxy_list; proxy; proxy = proxy->next)
            pg->pg_core_count += proxy->node->core_count;
    }

    status = HYDU_sock_create_and_listen_portstr(HYD_server_info.user_global.iface,
                                                 HYD_server_info.localhost,
                                                 HYD_server_info.port_range, &control_port,
                                                 HYD_pmcd_pmiserv_control_listen_cb,
                                                 (void *) (size_t) new_pgid);
    HYDU_ERR_POP(status, "unable to create PMI port\n");
    if (HYD_server_info.user_global.debug)
        HYDU_dump(stdout, "Got a control port string of %s\n", control_port);

    /* Go to the last PG */
    for (pg = &HYD_server_info.pg_list; pg->next; pg = pg->next);

    status = HYD_pmcd_pmi_fill_in_proxy_args(&proxy_stash, control_port, new_pgid);
    HYDU_ERR_POP(status, "unable to fill in proxy arguments\n");
    HYDU_FREE(control_port);

    status = HYD_pmcd_pmi_fill_in_exec_launch_info(pg);
    HYDU_ERR_POP(status, "unable to fill in executable arguments\n");

    status = HYDT_bsci_launch_procs(proxy_stash.strlist, pg->proxy_list, NULL);
    HYDU_ERR_POP(status, "launcher cannot launch processes\n");

    {
        char *cmd;

        HYD_STRING_STASH_INIT(stash);
        HYD_STRING_STASH(stash, HYDU_strdup("cmd=spawn-response;"), status);
        if (thrid) {
            HYD_STRING_STASH(stash, HYDU_strdup("thrid="), status);
            HYD_STRING_STASH(stash, HYDU_strdup(thrid), status);
            HYD_STRING_STASH(stash, HYDU_strdup(";"), status);
        }
        HYD_STRING_STASH(stash, HYDU_strdup("rc=0;"), status);
        HYD_STRING_STASH(stash, HYDU_strdup("jobid="), status);
        HYD_STRING_STASH(stash, HYDU_strdup(pg_scratch->kvs->kvsname), status);
        HYD_STRING_STASH(stash, HYDU_strdup(";"), status);
        HYD_STRING_STASH(stash, HYDU_strdup("nerrs=0;"), status);

        HYD_STRING_SPIT(stash, cmd, status);

        status = cmd_response(fd, pid, cmd);
        HYDU_ERR_POP(status, "send command failed\n");
        HYDU_FREE(cmd);
    }

  fn_exit:
    HYD_pmcd_pmi_free_tokens(tokens, token_count);
    HYD_STRING_STASH_FREE(proxy_stash);
    if (segment_list)
        HYDU_FREE(segment_list);
    HYDU_FUNC_EXIT();
    return status;

  fn_fail:
    goto fn_exit;
}