Disable CPU pinning; may be counterproductive on shared machine

.gitlab-ci.yml

@@ -236,7 +236,7 @@ run-sim:
     - PARALLELISM=20
     # We run into system limits on # of threads if we do the default of creating one per managed process.
     - WORKER_THREADS=200
-    - tornettools simulate -s $CI_PROJECT_DIR/jobs/opt/shadow/bin/shadow -a "--use-cpu-pinning=true --interpose-method=preload -p $PARALLELISM --worker-threads=$WORKER_THREADS --template-directory=shadow.data.template" $CI_PROJECT_DIR/jobs/tornet
+    - tornettools simulate -s $CI_PROJECT_DIR/jobs/opt/shadow/bin/shadow -a "--use-cpu-pinning=false --interpose-method=preload -p $PARALLELISM --worker-threads=$WORKER_THREADS --template-directory=shadow.data.template" $CI_PROJECT_DIR/jobs/tornet
 
     # Parse simulation results.
     # The raw results are too large to save as an artifact.