diff --git a/src/bin/cpubench.ts b/src/bin/cpubench.ts
index ddb772d..63bf350 100644
--- a/src/bin/cpubench.ts
+++ b/src/bin/cpubench.ts
@@ -8,6 +8,7 @@ import { promisifySpawn } from '../cli.js';
 import yargs from 'yargs';
 import { hideBin } from 'yargs/helpers';
 import chalk from 'chalk';
+import * as fs from 'fs';
 
 // 解析命令行参数
 const argv = await yargs(hideBin(process.argv))
@@ -39,6 +40,11 @@ const argv = await yargs(hideBin(process.argv))
         description: 'List of benchmarks to run',
         demandOption: true,
     })
+    .option('workdir-base', {
+        type: 'string',
+        description: 'Base directory of workdirs',
+        demandOption: true,
+    })
     .parse();
 
 
@@ -60,13 +66,18 @@ const configFile = path.resolve(cpubenchDir, 'config', `rendered-${uuid}.config`
 
 writeFileSync(configFile, cpubenchConfig);
 
+const workdir = path.join(argv.workdirBase, uuid);
+console.log(`Using workdir = ${workdir}`);
+await fs.promises.mkdir(workdir, { recursive: true });
+
 const proc = spawn(
     path.resolve(cpubenchDir, 'cpubench.sh'),
     [
         `--config=${configFile}`,
         "--skip_verify=1",
         "--rebuild=1",
-        "-i=1"
+        "-i=1",
+        `--work_dir=${workdir}`,
     ],
     { cwd: cpubenchDir }
 );