bench_test.sh: accept optional count argument, default 300

Co-Authored-By: deepseek-v4-pro[1m] <deepseek-ai@claude-code-best.win>

Author: kylincaster

tools/bench_test.sh

@@ -1,12 +1,13 @@
 #!/bin/bash
 
-COUNT=300
+COUNT=${1:-300}
 
 for ((i=1; i<=COUNT; i++)); do
     N=$((RANDOM % 6 + 1))
     Y=$((RANDOM % 31 + 5))
 
     echo "[$i/$COUNT] N=$N Y=$Y"
 
-    task-spooler -N "$N" mpirun -np "$N" mpi_pi "$Y"
+    task-spooler -N "$N" mpirun -np "$N" ../tools/mpi_pi "$Y"
+    sleep 0.1
 done