diff --git a/checkin_notes b/checkin_notes
index 53a6fa3433..020c5bd9a5 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -9591,3 +9591,12 @@ David  26 July 2005
 		client_types.C
 		cs_scheduler.C
 		cs_statefile.C
+
+Jeff  26 July 2005
+	- Allow multiple assimilators and file_deleters to run via
+	  modulus on WU id for the assimilator and WU and result
+	  id for the file_deleter.
+
+	sched/
+		assimilator.C
+		file_deleter.C
diff --git a/sched/assimilator.C b/sched/assimilator.C
index 740bd029f3..01b523257d 100644
--- a/sched/assimilator.C
+++ b/sched/assimilator.C
@@ -46,6 +46,7 @@ SCHED_CONFIG config;
 bool update_db = true;
 bool noinsert = false;
 
+int wu_id_modulus=0, wu_id_remainder=0;
 
 #define SLEEP_INTERVAL 10
 
@@ -59,14 +60,23 @@ bool do_pass(APP& app) {
     DB_RESULT canonical_result, result;
     bool did_something = false;
     char buf[256];
+    char mod_clause[256];
     int retval;
     int num_assimilated=0;
 
     check_stop_daemons();
 
+    if (wu_id_modulus) {
+    	sprintf(mod_clause, " and workunit.id %% %d = %d ",
+                wu_id_modulus, wu_id_remainder
+        );
+    } else {
+        strcpy(mod_clause, "");
+    }
+
     sprintf(buf,
-        "where appid=%d and assimilate_state=%d limit %d",
-        app.id, ASSIMILATE_READY,
+        "where appid=%d and assimilate_state=%d %s limit %d",
+        app.id, ASSIMILATE_READY, mod_clause,
         one_pass_N_WU ? one_pass_N_WU : 1000
     );
     while (!wu.enumerate(buf)) {
@@ -79,7 +89,7 @@ bool do_pass(APP& app) {
         }
 
         log_messages.printf(SCHED_MSG_LOG::DEBUG,
-            "[%s] assimilating; state=%d\n", wu.name, wu.assimilate_state
+            "[%s] assimilating boinc WU %d; state=%d\n", wu.name, wu.id, wu.assimilate_state
         );
 
         sprintf(buf, "where workunitid=%d", wu.id);
@@ -161,11 +171,19 @@ int main(int argc, char** argv) {
             // prevent the inserting of results into the *backend*
             // (as opposed to the boinc) DB.
             noinsert = true;
+        } else if (!strcmp(argv[i], "-mod")) {
+            wu_id_modulus   = atoi(argv[++i]);
+            wu_id_remainder = atoi(argv[++i]);
         } else {
             log_messages.printf(SCHED_MSG_LOG::CRITICAL, "Unrecognized arg: %s\n", argv[i]);
         }
     }
 
+    if (wu_id_modulus) {
+	log_messages.printf(SCHED_MSG_LOG::DEBUG, "Using mod'ed WU enumeration.  modulus = %d  remainder = %d\n",
+			    wu_id_modulus, wu_id_remainder);
+    }
+
     retval = config.parse_file("..");
     if (retval) {
         log_messages.printf(SCHED_MSG_LOG::CRITICAL, "Can't parse config file\n");
diff --git a/sched/file_deleter.C b/sched/file_deleter.C
index 9f4c2eed04..265f9518d2 100644
--- a/sched/file_deleter.C
+++ b/sched/file_deleter.C
@@ -43,6 +43,8 @@
 
 SCHED_CONFIG config;
 
+int id_modulus=0, id_remainder=0;
+
 // Given a filename, find its full path in the upload directory hierarchy
 // Return an error if file isn't there.
 //
@@ -183,14 +185,23 @@ bool do_pass(bool retry_error) {
     DB_RESULT result;
     bool did_something = false;
     char buf[256];
+    char mod_clause[256];
     int retval;
 
     check_stop_daemons();
 
-    if (retry_error) {
-    	sprintf(buf, "where file_delete_state=%d or file_delete_state=%d limit 1000", FILE_DELETE_READY, FILE_DELETE_ERROR);
+    if (id_modulus) {
+        sprintf(mod_clause, " and id %% %d = %d ",
+                id_modulus, id_remainder
+        );
     } else {
-    	sprintf(buf, "where file_delete_state=%d limit 1000", FILE_DELETE_READY);
+        strcpy(mod_clause, "");
+    }
+
+    if (retry_error) {
+    	sprintf(buf, "where file_delete_state=%d or file_delete_state=%d %s limit 1000", FILE_DELETE_READY, FILE_DELETE_ERROR, mod_clause);
+    } else {
+    	sprintf(buf, "where file_delete_state=%d %s limit 1000", FILE_DELETE_READY, mod_clause);
     }
     while (!wu.enumerate(buf)) {
         did_something = true;
@@ -210,9 +221,9 @@ bool do_pass(bool retry_error) {
     }
 
     if ( retry_error ) {
-    	sprintf(buf, "where file_delete_state=%d or file_delete_state=%d limit 1000", FILE_DELETE_READY, FILE_DELETE_ERROR);
+    	sprintf(buf, "where file_delete_state=%d or file_delete_state=%d %s limit 1000", FILE_DELETE_READY, FILE_DELETE_ERROR, mod_clause);
     } else {
-    	sprintf(buf, "where file_delete_state=%d limit 1000", FILE_DELETE_READY);
+    	sprintf(buf, "where file_delete_state=%d limit %s 1000", FILE_DELETE_READY, mod_clause);
     }
     while (!result.enumerate(buf)) {
         did_something = true;
@@ -265,11 +276,19 @@ int main(int argc, char** argv) {
             preserve_result_files = true;
         } else if (!strcmp(argv[i], "-d")) {
             log_messages.set_debug_level(atoi(argv[++i]));
+        } else if (!strcmp(argv[i], "-mod")) {
+            id_modulus   = atoi(argv[++i]);
+            id_remainder = atoi(argv[++i]);
         } else {
             log_messages.printf(SCHED_MSG_LOG::CRITICAL, "Unrecognized arg: %s\n", argv[i]);
         }
     }
 
+    if (id_modulus) {
+        log_messages.printf(SCHED_MSG_LOG::DEBUG, "Using mod'ed WU/result enumeration.  modulus = %d  remainder = %d\n",
+                            id_modulus, id_remainder);
+    }
+
     retval = config.parse_file("..");
     if (retval) {
         log_messages.printf(SCHED_MSG_LOG::CRITICAL, "Can't parse config file\n");