tools: default dash5 paths to home layout

tools/bench/run_pp_parallel.sh

@@ -10,8 +10,8 @@
 # Run from the repo root on the GPU host. Produces bench-out/pp{1,2,4}-{xserv,llama}.
 
 set -u
-MODEL="${MODEL:-/opt/wjh/models/qwen3-8b}"
-GGUF="${GGUF:-/opt/wjh/models/qwen3-8b/qwen3-8b-bf16.gguf}"
+MODEL="${MODEL:-$HOME/models/qwen3-8b}"
+GGUF="${GGUF:-$HOME/models/qwen3-8b/qwen3-8b-bf16.gguf}"
 LIMIT="${LIMIT:-20}"
 MAXSEQ="${MAXSEQ:-2048}"
 PPS="${PPS:-1 2 4}"