form.js

+const table = {
+  "interactive": { "max_cpu": 48, "max_hour": 2, "max_gpu": 0 },
+  "express": { "max_cpu": 48, "max_hour": 2, "max_gpu": 0 },
+  "short": { "max_cpu": 48, "max_hour": 12, "max_gpu": 0 },
+  "pascalnodes": { "max_cpu": 28, "max_hour": 12, "max_gpu": 4 },
+  "pascalnodes-medium": { "max_cpu": 28, "max_hour": 48, "max_gpu": 4 },
+  "medium": { "max_cpu": 48, "max_hour": 50, "max_gpu": 0 },
+  "long": { "max_cpu": 48, "max_hour": 150, "max_gpu": 0 },
+  "intel-dcb": { "max_cpu": 24, "max_hour": 150, "max_gpu": 0 },
+  "amd-hdr100": { "max_cpu": 128, "max_hour": 150, "max_gpu": 0 },
+  "largemem": { "max_cpu": 24, "max_hour": 50, "max_gpu": 0 },
+  "largemem-long": { "max_cpu": 24, "max_hour": 150, "max_gpu": 0 },
+  "amperenodes": { "max_cpu": 128, "max_hour": 12, "max_gpu": 2 },
+  "amperenodes-medium": { "max_cpu": 128, "max_hour": 48, "max_gpu": 2 },
+}
+
+const gpu_part_regex = /pascal|ampere/;
+
+function set_max_value(form_id, value) {
+  const form_element = $(form_id);
+  form_element.attr({'max': value});
+  if (form_element.val() > value)
+    form_element.val(value)
+}
+
 function set_partition_change_handler() {
   let partition_select = $("#batch_connect_session_context_bc_partition");
   partition_select.change( function(e) {
@@ -6,9 +31,15 @@ function set_partition_change_handler() {
 }
 
 function toggle_gpu_visibility(event) {
-  const show = /pascal|ampere/.test(event.target.value);
-  const selector = '#batch_connect_session_context_bc_num_gpus';
-  toggle_visibilty_of_form_group(selector, show);
+  const partition = event.target.value;
+  const cpu_selector = '#batch_connect_session_context_bc_num_slots';
+  const gpu_selector = '#batch_connect_session_context_bc_num_gpus';
+  const hour_selector = '#batch_connect_session_context_bc_num_hours';
+
+  toggle_visibilty_of_form_group(gpu_selector, gpu_part_regex.test(partition));
+  set_max_value(cpu_selector, table[partition]["max_cpu"]);
+  set_max_value(gpu_selector, table[partition]["max_gpu"]);
+  set_max_value(hour_selector, table[partition]["max_hour"]);
 }
 
 function toggle_visibilty_of_form_group(form_id, show) {

form.yml.erb

+<%-
+  partitions = OodAppkit.clusters[:SLURM_CLUSTER].custom_config[:partitions]
+-%>
 ---
 cluster: "SLURM_CLUSTER"
 attributes:
@@ -5,6 +8,7 @@ attributes:
     value: 1
 
   bc_num_slots:
+    widget: "number_field"
     label: Number of CPU
     value: 1
     min: 1
@@ -20,9 +24,10 @@ attributes:
     step: 1
 
   bc_num_gpus:
+    widget: "number_field"
     label: Number of GPUs
     value: 1
-    min: 1
+    min: 0
     max: 4
     step: 1
 
@@ -30,20 +35,9 @@ attributes:
     widget: select
     label: Partition
     options:
-      - [ "express", "express" ]
-      - [ "short", "short" ]
-      - [ "medium", "medium" ]
-      - [ "long", "long" ]
-      - [ "interactive", "interactive" ]
-      - [ "pascalnodes", "pascalnodes" ]
-      - [ "pascalnodes-medium", "pascalnodes-medium" ]
-      - [ "largemem", "largemem" ]
-      - [ "largemem-long", "largemem-long" ]
-      - [ "amd-hdr100", "amd-hdr100" ]
-      - [ "intel-dcb", "intel-dcb" ]
-      - [ "amperenodes-debug", "amperenodes-debug" ]
-      - [ "amperenodes", "amperenodes" ]
-      - [ "amperenodes-medium", "amperenodes-medium" ]
+    <%- partitions.each do |p| -%>
+      - [ "<%= p %>", "<%= p %>" ]
+    <%- end -%>
 
   version:
     widget: select
@@ -56,7 +50,7 @@ attributes:
   reserve_node:
     widget: check_box
     label: "Reserve the entire node"
-     
+
 form:
   - version
   - bc_num_hours