diff --git a/Makefile b/Makefile
index d898b93d..628def0e 100644
--- a/Makefile
+++ b/Makefile
@@ -347,6 +347,10 @@ mx_getopt.h += mx_getopt.h
 
 keywordset.h += keywordset.h
 
+### ppidchache.h -------------------------------------------------------
+
+ppidcache.h += ppidcache.h
+
 ########################################################################
 
 ### mx_getopt.o --------------------------------------------------------
@@ -489,6 +493,7 @@ mxqd.o: $(mxq_group.h)
 mxqd.o: $(mxq_job.h)
 mxqd.o: $(mx_mysql.h)
 mxqd.o: $(keywordset.h)
+mxqd.o: $(ppidcache.h)
 mxqd.o: CFLAGS += $(CFLAGS_MYSQL)
 mxqd.o: CFLAGS += $(CFLAGS_MXQ_INITIAL_PATH)
 mxqd.o: CFLAGS += $(CFLAGS_MXQ_INITIAL_TMPDIR)
@@ -522,6 +527,7 @@ clean: CLEAN += keywordset.o
 
 ### ppidcache.o -------------------------------------------------------
 
+ppidcache.o: $(ppidcache.h)
 ppidcache.o: $(mx_util.h)
 ppidcache.o: $(mx_proc.h)
 
diff --git a/helper/gpu-setup b/helper/gpu-setup
index da19fd76..d1ef1881 100755
--- a/helper/gpu-setup
+++ b/helper/gpu-setup
@@ -20,37 +20,12 @@ die() {
     exit 1
 }
 
-policy_a100_split_7() {
-
-    # This policy splits a single A100 with 40 GB into 7 1g.5gb gpu instances each with a
-    # single default compute instance.
-    #
-    # The ID of the 1g.5gb profile is 19 (see `nvidia-smi mig -lgip`).
-    # The placements for profile 19 are 0..6 (see `nvidia-smi mig -lgipp`).
-    # We know that these placements create GPU instance IDs from 7 to 13 from
-    # the output of the `nvidia-smi mig --create-gpu-instance`commands.
-    # We know how the instance IDs map to minor device numbers from /proc/driver/nvidia-caps/mig-minors
-    # Note, that the minor numbers are only valid for gpu0, this is why this code is
-    # only suited for machines with a single GPU.
-    #
-    #   PROFILE PLACEMENT  GPU-INSTANCE-ID     MINOR  MINOR-COMPUTE-0
-    #   1g.5gb     0             7               66        67
-    #   1g.5gb     1             8               75        76
-    #   1g.5gb     2             9               84        85
-    #   1g.5gb     3            10               93        94
-    #   1g.5gb     4            11              102       103
-    #   1g.5gb     5            12              111       112
-    #   1g.5gb     6            13              120       121
+common_setup_a100() {
+    gpu_uuid=$1
 
     # Note: Nvidia regards persistence-mode as legacy....
-
     nvidia-smi --persistence-mode=1
 
-    gpu_uuid=$(nvidia-smi  --query-gpu=uuid --format=csv,noheader,nounits)
-    caps_major=$(grep ' nvidia-caps$' /proc/devices|cut -f 1 -d' ')
-
-    test "$gpu_uuid" || die "GPU not found!"
-
     nvidia-smi mig --destroy-compute-instance --id $gpu_uuid >/dev/null || true
     nvidia-smi mig --destroy-gpu-instance --id $gpu_uuid >/dev/null || true
 
@@ -62,17 +37,20 @@ policy_a100_split_7() {
 
     umask 022
     mkdir -p /dev/nvidia-caps
-    for i in $(seq 0 6);do
-        instance_id=$(($i+7))
-        nvidia-smi mig --id $gpu_uuid --create-gpu-instance 1g.5gb:$i --default-compute-instance
-    done
+}
+
+common_setup_a100_complete() {
+    gpu_uuid=$1
+    caps_major=$(grep ' nvidia-caps$' /proc/devices|cut -f 1 -d' ')
 
     # calling `nvidia-smi --list-gpus` as root has the side effect of creating the cap files
     # for the gpu instances and the compute instances in /dev/nvidia-caps
     nvidia-smi --list-gpus
 
-    for i in $(seq 0 6);do
-        instance_id=$(($i+7))
+    i=0
+    for name in $(ls /proc/driver/nvidia/capabilities/gpu0/mig/|sort -k1.3n); do
+        [[ $name =~ ^gi([0-9]+)$ ]] || continue
+        instance_id=${BASH_REMATCH[1]}
         caps_minor=$(grep "^gpu0/gi$instance_id/access " /proc/driver/nvidia-caps/mig-minors|cut -f 2 -d ' ')
         caps_minor_compute=$(grep "^gpu0/gi$instance_id/ci0/access " /proc/driver/nvidia-caps/mig-minors|cut -f 2 -d ' ')
         d=$(printf "/dev/shm/mxqd/gpu_devs/%03d" $i)
@@ -84,9 +62,61 @@ policy_a100_split_7() {
             chown root:root $f
             chmod go= $f
         done
+        i=$((i+1))
+    done
+
+    echo $i >&20
+}
+
+policy_a100_split_7() {
+
+    # This policy splits a single A100 with 40 GB into 7 1g.5gb gpu instances each with a
+    # single default compute instance.
+    #
+    # The ID of the 1g.5gb profile is 19 (see `nvidia-smi mig -lgip`).
+    # The placements for profile 19 are 0..6 (see `nvidia-smi mig -lgipp`).
+    #
+    # Strangely, the gpu instance idents created seem to vary from hardware to hardware.
+    # With `for p in $(seq 0 6); do nvidia-smi mig -cgi 1g.5gb:$p;done` we've seen these gpu instances created:
+    #
+    #   theredqueen:   7,  8 , 9, 10, 11, 12, 13
+    #   whiterabbit:   7,  8 , 9, 10, 11, 12, 13
+    #   bandersnatch:  7,  8 , 9, 10, 11, 12, 13
+    #   jabberwocky:  11, 12, 13, 14,  7,  8 , 9
+    #
+    # So we walk through /proc/driver/nvidia/capabilities/gpu0/mig/gi* after we've
+    # created the gpu instances to find the gpu idents.
+
+    gpu_uuid=$(nvidia-smi  --query-gpu=uuid --format=csv,noheader,nounits)
+    test "$gpu_uuid" || die "GPU not found!"
+
+    common_setup_a100 $gpu_uuid
+
+    for i in $(seq 0 6);do
+        nvidia-smi mig --id $gpu_uuid --create-gpu-instance 1g.5gb:$i --default-compute-instance
+    done
+
+    common_setup_a100_complete $gpu_uuid
+}
+
+policy_a100_split_3() {
+
+    # This policy splits a single A100 with 40 GB into 3 2g.10gb gpu instances each with a
+    # single default compute instance.
+    #
+    # The ID of the 2g.10gb profile is 14 (see `nvidia-smi mig -lgip`).
+    # The placements for profile 14 are 0,2,4 (see `nvidia-smi mig -lgipp`).
+
+    gpu_uuid=$(nvidia-smi  --query-gpu=uuid --format=csv,noheader,nounits)
+    test "$gpu_uuid" || die "GPU not found!"
+
+    common_setup_a100 $gpu_uuid
+
+    for i in $(seq 0 2 4);do
+        nvidia-smi mig --id $gpu_uuid --create-gpu-instance 2g.10gb:$i --default-compute-instance
     done
 
-    echo 7 >&20
+    common_setup_a100_complete $gpu_uuid
 }
 
 policy_phys_gpus() {
@@ -139,6 +169,9 @@ init() {
         a100-split-7)
             policy_a100_split_7
             ;;
+        a100-split-3)
+            policy_a100_split_3
+            ;;
         phys-gpus)
             policy_phys_gpus
             ;;
diff --git a/mx_util.c b/mx_util.c
index e8eef56e..8b675159 100644
--- a/mx_util.c
+++ b/mx_util.c
@@ -1306,7 +1306,7 @@ unsigned long mx_df(const char *path) {
     return s.f_bavail*s.f_frsize;
 }
 
-time_t mx_clock_boottime() {
+time_t mx_clock_boottime(void) {
     struct timespec ts;
     int res = clock_gettime(CLOCK_BOOTTIME, &ts);
     if (res != 0) {
diff --git a/mx_util.h b/mx_util.h
index 701eb850..e7971261 100644
--- a/mx_util.h
+++ b/mx_util.h
@@ -179,7 +179,7 @@ void _mx_sort_linked_list(void **list, int (*cmp)(void *o1,void *o2), void ** (*
 #define mx_sort_linked_list(list,cmp,getnextptr) _mx_sort_linked_list((void **)(list),(int (*)(void *,void *))(cmp),(void ** (*)(void *))(getnextptr)) 
 
 unsigned long mx_df(const char *path);
-time_t mx_clock_boottime();
+time_t mx_clock_boottime(void);
 char *mx_call_external(char *args, ...);
 
 #endif
diff --git a/mxqd.c b/mxqd.c
index a3ba9adf..32be11c0 100644
--- a/mxqd.c
+++ b/mxqd.c
@@ -81,9 +81,7 @@ static void print_usage(void)
     "  -t, --max-time  <minutes>         default: 0 (unlimited)\n"
     "      --prerequisites <expr>        default: ''\n"
     "  -x, --max-memory-per-slot-soft <softlimit>\n"
-    "                         root user: default: <totalmemory>/<slots>\n"
-    "                     non-root user: default: <totalmemory>\n"
-    "       --gpu\n"
+    "      --gpu\n"
     "\n"
     "  -X, --max-memory-per-slot-hard <hardlimit>\n"
     "                                    default: <totalmemory>\n"
@@ -336,7 +334,7 @@ static void read_hostconfig_retry(struct keywordset *kws) {
 
 static char gpu_setup_script[] = LIBEXECDIR "/mxq/gpu-setup";
 
-static int get_gpus() {
+static int get_gpus(void) {
     char *line = mx_call_external(gpu_setup_script, "init", NULL);
     if (!line) {
         mx_log_err("gpu-setup init: %m");
diff --git a/mysql/create_tables.sql b/mysql/create_tables.sql
index 3ff573f8..549b55a7 100644
--- a/mysql/create_tables.sql
+++ b/mysql/create_tables.sql
@@ -102,10 +102,6 @@ CREATE TABLE IF NOT EXISTS mxq_job (
    date_start   TIMESTAMP NOT NULL DEFAULT 0,
    date_end     TIMESTAMP NOT NULL DEFAULT 0,
 
-   job_id_new     INT8 UNSIGNED   NULL DEFAULT NULL,
-   job_id_old     INT8 UNSIGNED   NULL DEFAULT NULL,
-   job_id_first   INT8 UNSIGNED   NULL DEFAULT NULL,
-
    stats_max_sumrss  INT8 UNSIGNED NOT NULL DEFAULT 0,
 
    stats_status   INT4 UNSIGNED NOT NULL DEFAULT 0,
diff --git a/mysql/migrate_014_remove_job_id_fields.sql b/mysql/migrate_014_remove_job_id_fields.sql
new file mode 100644
index 00000000..e01a96bd
--- /dev/null
+++ b/mysql/migrate_014_remove_job_id_fields.sql
@@ -0,0 +1,4 @@
+ALTER TABLE mxq_job
+	DROP COLUMN job_id_new,
+	DROP COLUMN job_id_old,
+	DROP COLUMN job_id_first;
diff --git a/ppidcache.c b/ppidcache.c
index 11d95204..35c1de3d 100644
--- a/ppidcache.c
+++ b/ppidcache.c
@@ -16,7 +16,7 @@ struct ppidcache {
     struct entry *entries;
 };
 
-struct ppidcache *ppidcache_new() {
+struct ppidcache *ppidcache_new(void) {
     struct ppidcache *ppidcache = mx_malloc_forever(sizeof(struct ppidcache));
     ppidcache->count = 0;
     ppidcache->alloc = 500;
diff --git a/ppidcache.h b/ppidcache.h
index ca4a7e37..99e4bb22 100644
--- a/ppidcache.h
+++ b/ppidcache.h
@@ -3,7 +3,7 @@
 
 #include <sys/types.h>
 
-struct ppidcache *ppidcache_new();
+struct ppidcache *ppidcache_new(void);
 void ppidcache_free (struct ppidcache *ppidcache);
 pid_t ppidcache_get_ppid(struct ppidcache *ppidcache, pid_t pid);
 int ppidcache_is_descendant(struct ppidcache *ppidcache, pid_t ancestor, pid_t candidate);
diff --git a/test_mx_util.c b/test_mx_util.c
index 028a9ebb..6f473093 100644
--- a/test_mx_util.c
+++ b/test_mx_util.c
@@ -347,7 +347,7 @@ static void test_mx_strscan(void)
     mx_proc_pid_stat_free_content(pps);
 }
 
-static void test_mx_strvec() {
+static void test_mx_strvec(void) {
     char **strvec;
     char *str;
 
@@ -395,7 +395,7 @@ static void test_mx_strvec() {
     free(strvec);
 }
 
-static void test_mx_strcat() {
+static void test_mx_strcat(void) {
     char *str;
     char *str2;
 
@@ -517,11 +517,11 @@ static void test_listsort(void)
     assert(o[9].next==NULL);
 }
 
-static void test_mx_df() {
+static void test_mx_df(void) {
     assert(mx_df("/") > 0);
 }
 
-static void test_mx_call_external() {
+static void test_mx_call_external(void) {
     char *line;
 
     errno = 999;
diff --git a/web/pages/mxq/mxq.in b/web/pages/mxq/mxq.in
index 544497d7..f91d6918 100755
--- a/web/pages/mxq/mxq.in
+++ b/web/pages/mxq/mxq.in
@@ -623,10 +623,6 @@ date_submit      : $o{date_submit}
 date_start       : $o{date_start} $ago
 date_end         : $o{date_end} $rt
 
-job_id_new       : $o{job_id_new}
-job_id_old       : $o{job_id_old}
-job_id_first     : $o{job_id_first}
-
 stats_max_sumrss : $o{stats_max_sumrss} kiB
 
 stats_status     : $o{stats_status}
diff --git a/xmalloc.h b/xmalloc.h
index 23705bdd..0e90e1e8 100644
--- a/xmalloc.h
+++ b/xmalloc.h
@@ -4,7 +4,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-__attribute__ ((noreturn, unused)) static void out_of_memory() {
+__attribute__ ((noreturn, unused)) static void out_of_memory(void) {
     fprintf(stderr,"out of memory\n");
     abort();
 }