diff --git a/crab/short-matrix1/pset.py b/crab/short-matrix1/pset.py
index 6c21333b697..cab33fbec1f 100644
--- a/crab/short-matrix1/pset.py
+++ b/crab/short-matrix1/pset.py
@@ -31,7 +31,7 @@
 process.source = cms.Source("EmptySource")
 
 process.options = cms.untracked.PSet()
-process.options.numberOfThreads = cms.untracked.uint32(1)
+process.options.numberOfThreads = cms.untracked.uint32(2)
 
 # Production Info
 process.configurationMetadata = cms.untracked.PSet(
diff --git a/crab/short-matrix1/run.sh b/crab/short-matrix1/run.sh
index 83afad1239e..83a55b5c48e 100755
--- a/crab/short-matrix1/run.sh
+++ b/crab/short-matrix1/run.sh
@@ -11,6 +11,7 @@ pushd matrix
     esac
   done
 popd
+tar -czvf matrix.tar.gz matrix >>run.log 2>&1
 mv matrix/runall-report-step123-.log matrix.log
 grep -E ' Step[0-9]' matrix.log || true
-tar -czvf matrix.tar.gz matrix
+grep ' tests passed' matrix.log || true
diff --git a/crab/short-matrix1/task.py b/crab/short-matrix1/task.py
index cd6b416bfa8..a3d0acf95d2 100644
--- a/crab/short-matrix1/task.py
+++ b/crab/short-matrix1/task.py
@@ -18,8 +18,8 @@
 config.JobType.psetName = "pset.py"
 config.JobType.pluginName = "PrivateMC"
 config.JobType.maxJobRuntimeMin = 600
-config.JobType.maxMemoryMB = 2000
-config.JobType.numCores = 1
+config.JobType.maxMemoryMB = 4000
+config.JobType.numCores = 2
 config.JobType.allowUndistributedCMSSW = True
 config.JobType.scriptExe = "run.sh"
 config.JobType.disableAutomaticOutputCollection = True