diff --git a/radiance.mk b/radiance.mk
index f218169..427a7f9 100644
--- a/radiance.mk
+++ b/radiance.mk
@@ -25,7 +25,7 @@ EXTRA_SIM_PREPROC_DEFINES += \
 	+define+GBAR_ENABLE \
 	+define+GBAR_CLUSTER_ENABLE \
 	+define+FPU_FPNEW \
-	+define+SMEM_LOG_SIZE=17
+	+define+SMEM_LOG_SIZE=19
 	# +define+LSU_DUP_DISABLE \
 
 VCS_NONCC_OPTS += +vcs+initreg+random
diff --git a/src/main/resources/vsrc/vortex b/src/main/resources/vsrc/vortex
index 2b1a9b7..3f8c28c 160000
--- a/src/main/resources/vsrc/vortex
+++ b/src/main/resources/vsrc/vortex
@@ -1 +1 @@
-Subproject commit 2b1a9b7c163ad9df04ab64db09210a0871124367
+Subproject commit 3f8c28c7d6d270925ed4eb97b0d17ddd685f9c34
diff --git a/src/main/scala/radiance/tile/RadianceCluster.scala b/src/main/scala/radiance/tile/RadianceCluster.scala
index 3890180..3ccfeab 100644
--- a/src/main/scala/radiance/tile/RadianceCluster.scala
+++ b/src/main/scala/radiance/tile/RadianceCluster.scala
@@ -45,8 +45,10 @@ class RadianceCluster (
   val gemminis = gemminiTiles.map(_.gemmini)
   val gemminiConfigs = gemminis.map(_.config)
 
-  if (!(gemminiConfigs.tail.map(_.inputType == gemminiConfigs.head.inputType).reduce(_ && _))) {
-    println("******** WARNING ********\n******** gemmini data types do not match\n******** WARNING ********")
+  if (gemminiConfigs.length > 1) {
+    if (!(gemminiConfigs.tail.map(_.inputType == gemminiConfigs.head.inputType).reduce(_ && _))) {
+      println("******** WARNING ********\n******** gemmini data types do not match\n******** WARNING ********")
+    }
   }
 
   val radianceTiles = leafTiles.values.filter(_.isInstanceOf[RadianceTile]).toSeq.asInstanceOf[Seq[RadianceTile]]