offload: radium starts nothing from 17:00 to 21:00 (in use 18-21)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PFPK14wBcLD1s4dYUowpP4

Author: andy

tools/offload/README.md

@@ -37,7 +37,8 @@ exit status is the command's (77 is SKIP). Examples:
 
 `--host auto` (the default) prefers tellurium for `build`/`ctest` and radium
 for `teaching`/`apps`, takes the other if the first has no free slot, and
-queues on the first reachable host if both are full. **tellurium is someone's gaming computer and is used only in its owner's hours** (until 2026-10-08 14:00, then evenings 17-21 and weekend mornings 07-12; a job starts only with an hour left, see `tellurium_free` in the script). A host that does not answer within 5 s
+queues on the first reachable host if both are full. **tellurium is someone's gaming computer and is used only in its owner's hours** (until 2026-10-08 14:00, then evenings 17-21 and weekend mornings 07-12; a job starts only with an hour left, see `tellurium_free` in the script). radium starts nothing from 17:00 to 21:00
+(in use 18-21). A host that does not answer within 5 s
 is skipped. If
 no host is reachable the script exits 3 and says so; run the command locally
 then. Slots are `flock` files in `<work root>/locks`, so waiting jobs queue

tools/offload/run-offload.sh

@@ -37,19 +37,25 @@ tellurium_free() {
     [ "$hm" -ge $((17 * 60)) ] && [ "$hm" -le $((20 * 60)) ] && return 0
     [ "$day" -ge 6 ] && [ "$hm" -ge $((7 * 60)) ] && [ "$hm" -le $((11 * 60)) ]
 }
-if [ "$host" = tellurium ] && ! tellurium_free; then
-    echo "offload: tellurium is not available now (owner's hours); use radium" >&2
+# radium is in use on evenings 18-21: start nothing from 17:00 to 21:00.
+radium_free() {
+    local hm=$((10#$(date +%H) * 60 + 10#$(date +%M)))
+    [ "$hm" -lt $((17 * 60)) ] || [ "$hm" -ge $((21 * 60)) ]
+}
+host_free() { case $1 in tellurium) tellurium_free ;; radium) radium_free ;; *) true ;; esac; }
+if [ "$host" != auto ] && ! host_free "$host"; then
+    echo "offload: $host is not available now (owner's hours)" >&2
     exit 3
 fi
 if [ "$host" = auto ]; then
     # Builds prefer tellurium, test suites radium.  A host that does not
-    # answer, or tellurium outside its hours, is skipped; if every reachable host
+    # answer, or is outside its owner's hours, is skipped; if every reachable host
     # is full the job queues on the first reachable one.
     case $2 in build|ctest) order="tellurium radium" ;; *) order="radium tellurium" ;; esac
     host= queue=
     for h in $order; do
-        if [ "$h" = tellurium ] && ! tellurium_free; then
-            echo "offload: tellurium outside its hours, skipped" >&2; continue
+        if ! host_free "$h"; then
+            echo "offload: $h outside its hours, skipped" >&2; continue
         fi
         n=$(free "$h")
         [ "$n" -ge 0 ] || { echo "offload: $h unreachable, skipped" >&2; continue; }