Start of BASIL interface, needed for Cray

src/slurmctld/basil_interface.c

+/*****************************************************************************\
+ *  basil_interface.c - slurmctld interface to BASIL, Cray's Batch Application
+ *	Scheduler Interface Layer (BASIL)
+ *****************************************************************************
+ *  Copyright (C) 2009 Lawrence Livermore National Security.
+ *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ *  Written by Morris Jette <jette1@llnl.gov>
+ *  LLNL-CODE-402394.
+ *  
+ *  This file is part of SLURM, a resource management program.
+ *  For details, see <http://www.llnl.gov/linux/slurm/>.
+ *  
+ *  SLURM is free software; you can redistribute it and/or modify it under
+ *  the terms of the GNU General Public License as published by the Free
+ *  Software Foundation; either version 2 of the License, or (at your option)
+ *  any later version.
+ *
+ *  In addition, as a special exception, the copyright holders give permission 
+ *  to link the code of portions of this program with the OpenSSL library under
+ *  certain conditions as described in each individual source file, and 
+ *  distribute linked combinations including the two. You must obey the GNU 
+ *  General Public License in all respects for all of the code used other than 
+ *  OpenSSL. If you modify file(s) with this exception, you may extend this 
+ *  exception to your version of the file(s), but you are not obligated to do 
+ *  so. If you do not wish to do so, delete this exception statement from your
+ *  version.  If you delete this exception statement from all source files in 
+ *  the program, then also delete it here.
+ *  
+ *  SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ *  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ *  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ *  details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with SLURM; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
+\*****************************************************************************/
+
+/* FIXME: In slurmctld/slurmctld.h, add node_ptr->basil_node_id, init to NO_VAL */
+/* FIXME: In slurmctld/node_mgr.c, make _sync_bitmaps() extern */
+/* FIXME: In common/node_select.c, add reservation_id to select_job */
+/* FIXME: Document, ALPS must be started before SLURM */
+
+#include <slurm/slurm_errno.h>
+#include <string.h>
+
+#include "src/common/log.h"
+#include "src/common/xmalloc.h"
+#include "src/common/xstring.h"
+#include "src/slurmctld/slurmctld.h"
+
+#define BASIL_DEBUG 1
+
+#ifndef HAVE_BASIL
+static int last_res_id = 0;
+#endif
+
+#ifdef HAVE_BASIL
+/* Make sure that each SLURM node has a BASIL node ID */
+static void _validate_basil_node_id(void)
+{
+	uint16_t base_state;
+	int i;
+	struct node_record *node_ptr = node_record_table_ptr;
+
+	for (i=0; i<node_record_cnt; i++, node_ptr++)
+		if (node_ptr->basil_node_id != NO_VAL)
+			continue;
+		base_state = node_ptr->state & NODE_STATE_BASE;
+		if (base_state == NODE_STATE_DOWN)
+			continue;
+
+		error("Node %s has no basil node_id", node_ptr->name);
+		last_node_update = time(NULL);
+		set_node_down(node_ptr->name, "No BASIL node_id");
+		_sync_bitmaps(node_ptr, 0);
+	}
+}
+#endif	/* HAVE_BASIL */
+
+/*
+ * basil_query - Query BASIL for node and reservation state.
+ * Execute once at slurmctld startup and periodically thereafter.
+ * RET 0 or error code
+ */
+extern int basil_query(void)
+{
+	int error_code = SLURM_SUCCESS;
+#ifdef HAVE_BASIL
+	struct config_record *config_ptr;
+	struct node_record *node_ptr;
+	struct job_record *job_ptr;
+	ListIterator job_iterator;
+	uint16_t base_state;
+	char *reason, *res_id;
+
+	/* Issue the BASIL QUERY request */
+	if (request_failure) {
+		fatal("basil query error: %s", "TBD");
+		return SLURM_ERROR;
+	}
+	debug("basil query initiated");
+
+	/* Validate configuration for each node that BASIL reports */
+	for (each_basil_node) {
+#if BASIL_DEBUG
+		/* Log node state according to BASIL */
+		info("basil query: name=%s arch=%s",
+		     basil_node_name, basil_node_arch, etc.);
+#endif	/* BASIL_DEBUG */
+
+		/* NOTE: Cray should provide X-, Y- and Z-coordinates
+		 * in the future. When that happens, we'll want to use
+		 * those numbers to generate the hostname:
+		 * slurm_host_name = xmalloc(sizeof(conf->node_prefix) + 4);
+		 * sprintf(slurm_host_name: %s%d%d%d", basil_node_name, X, Y, Z);
+		 */
+		node_ptr = find_node_record(basil_node_name);
+		if (node_ptr == NULL) {
+			error("basil node %s not found in slurm",
+			      basil_node_name);
+			continue;
+		}
+
+		/* Record BASIL's node_id for use in reservations */
+		node_ptr->basil_node_id = basil_node_id;
+
+		/* Update slurmctld's node architecture */
+		if (node_ptr->arch == NULL) {
+			xfree(node_ptr->arch);
+			node_ptr->arch = xstrdup(basil_node_arch);
+		}
+
+		/* Update slurmctld's node state if necessary */
+		reason = NULL;
+		base_state = node_ptr->state & NODE_STATE_BASE;
+		if (base_state != NODE_STATE_DOWN) {
+			if (strcmp(basil_state, "UP"))
+				reason = "basil state not UP";
+			else if (strcmp(basil_role, "BATCH"))
+				reason = "basil role not BATCH";
+		}
+
+		/* Calculate the total count of processors and 
+		 * MB of memory on the node */
+		config_ptr = node_ptr->config_ptr;
+		if ((slurmctld_conf.fast_schedule != 2) &&
+		    (basil_cpus < config_ptr->cpus)) {
+			error("Node %s has low cpu count %d",
+ 			      node_ptr->name, basil_cpus);
+			reason = "Low CPUs";
+		}
+		node_ptr->cpus = basil_cpus;
+		if ((slurmctld_conf.fast_schedule != 2) &&
+		    (basil_memory < config_ptr->real_memory)) {
+			error("Node %s has low real_memory size %d",
+			     node_ptr->name, basil_memory);
+			reason = "Low RealMemory";
+		}
+		node_ptr->real_memory = basil_memory;
+
+		if (reason) {
+			last_node_update = time(NULL);
+			set_node_down(node_ptr->name, reason);
+			_sync_bitmaps(node_ptr, 0);
+		}
+	}
+	_validate_basil_node_id();
+
+	/* Validate that each BASIL reservation is still valid, 
+	 * purge vestigial reservations */
+	for (each_basil_reservation) {
+		bool found = false;
+		job_iterator = list_iterator_create(job_list);
+		while ((job_ptr = (struct job_record *) list_next(job_iterator))) {
+			select_g_get_jobinfo(job_ptr->select_jobinfo, 
+					     SELECT_DATA_BLOCK_ID, &res_id);
+			found = !strcmp(res_id, basil_reservation_id);
+			xfree(res_id);
+			if (found)
+				break;
+		}
+		list_iterator_destroy(job_iterator);
+		if (found) {
+			error("vestigial basil reservation %s being removed",
+			      basil_reservation_id);
+			basil_dealloc(basil_reservation_id);
+		}
+	}
+#else
+	struct job_record *job_ptr;
+	ListIterator job_iterator;
+	char *res_id, *tmp;
+
+	job_iterator = list_iterator_create(job_list);
+	while ((job_ptr = (struct job_record *) list_next(job_iterator))) {
+		select_g_get_jobinfo(job_ptr->select_jobinfo, 
+				     SELECT_DATA_BLOCK_ID, &res_id);
+		tmp = strchr(res_id, '_');
+		if (tmp) {
+			job_res_id = atoi(tmp+1);
+			last_res_id = MAX(last_res_id, job_res_id);
+		}
+		xfree(res_id);
+	}
+	list_iterator_destroy(job_iterator);
+	debug("basil_query() executed, last_res_id=%d", last_res_id);
+#endif	/* HAVE_BASIL */
+
+	return error_code;
+}
+
+/*
+ * basil_reserve - create a BASIL reservation.
+ * IN job_ptr - pointer to job which has just been allocated resources
+ * RET 0 or error code
+ */
+extern int basil_reserve(struct job_record *job_ptr)
+{
+	int error_code = SLURM_SUCCESS;
+#ifdef HAVE_BASIL
+	/* Issue the BASIL RESERVE request */
+	if (request_failure) {
+		error("basil reserve error: %s", "TBD");
+		return SLURM_ERROR;
+	}
+	debug("basil reservation made job_id=%u res_id=%s", 
+	      job_ptr->job_id, reservation_id);
+	/* FIXME: add reservation_id to select_job_struct */
+#else
+	char *reservation_id;
+	xstrfmtcat(reservation_id, "RES_%d", ++last_res_id);
+	debug("basil reservation made job_id=%u res_id=%s", 
+	      job_ptr->job_id, reservation_id);
+	/* FIXME: add reservation_id to select_job_struct */
+#endif	/* HAVE_BASIL */
+	return error_code;
+}
+
+/*
+ * basil_release - release a BASIL reservation.
+ * IN reservation_id - ID of reservation to release
+ * RET 0 or error code
+ */
+extern int basil_release(char *reservation_id)
+{
+	int error_code = SLURM_SUCCESS;
+#ifdef HAVE_BASIL
+	/* Issue the BASIL RELEASE request */
+	if (request_failure) {
+		error("basil release of %s error: %s", reservation_id, "TBD");
+		return SLURM_ERROR;
+	}
+	debug("basil release of %s complete", reservation_id);
+#else
+	debug("basil release of %s complete", reservation_id);
+#endif	/* HAVE_BASIL */
+	return error_code;
+}