diff --git a/include/data/data.h b/include/data/data.h
index 636d1ae..0a2bacd 100644
--- a/include/data/data.h
+++ b/include/data/data.h
@@ -42,6 +42,12 @@
 #define L1_GLOBAL_DATA __attribute__((section(".data_l1")))
 #define L1_DATA L1_GLOBAL_DATA
 
+#ifdef USE_CLUSTER
+#define RT_LOCAL_DATA L1_DATA
+#else
+#define RT_LOCAL_DATA FC_DATA
+#endif
+
 #endif
 
 
@@ -54,7 +60,9 @@
 #endif
 #endif
 
-
+#ifdef ARCHI_CLUSTER_NB_PE
+#define ARCHI_NB_PE ARCHI_CLUSTER_NB_PE
+#endif
 
 
 #include "alloc.h"
diff --git a/include/pulp.h b/include/pulp.h
index bf6df24..41a055c 100755
--- a/include/pulp.h
+++ b/include/pulp.h
@@ -53,6 +53,8 @@ void uart_close(int uart_id);
 int uart_write(int uart_id, void *buffer, uint32_t size);
 int uart_read(int uart_id, void *buffer, uint32_t size);
 
+void synch_barrier();
+
 
 
 #endif
diff --git a/init.sh b/init.sh
index c85ec0c..e90f678 100644
--- a/init.sh
+++ b/init.sh
@@ -2,5 +2,4 @@
 
 scriptDir="$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"
 
-export PULPRT_HOME=$scriptDir
-export PULP_SDK_HOME=$scriptDir
\ No newline at end of file
+export PULPRT_HOME=$scriptDir
\ No newline at end of file
diff --git a/kernel/cluster.c b/kernel/cluster.c
index 212898f..5e9e172 100644
--- a/kernel/cluster.c
+++ b/kernel/cluster.c
@@ -35,6 +35,11 @@ static void pos_wait_forever()
 
 void cluster_entry_stub()
 {
+
+    eu_evt_maskSet((1<<PULP_DISPATCH_EVENT) | (1<<PULP_MUTEX_EVENT) | (1<<PULP_HW_BAR_EVENT));
+
+    eu_bar_setup(eu_bar_addr(0), (1<<ARCHI_CLUSTER_NB_PE) - 1);
+
     int retval = ((int (*)())cluster_entry)();
 
     if (hal_core_id() == 0)
@@ -77,3 +82,9 @@ int cluster_wait(int cid)
     while(1);
     return 0;
 }
+
+void synch_barrier()
+{
+    if (hal_cluster_id() != ARCHI_FC_CID)
+        eu_bar_trig_wait_clr(eu_bar_addr(0));
+}
diff --git a/rules/pulpos/default_rules.mk b/rules/pulpos/default_rules.mk
index 3bad5e3..a6801b1 100644
--- a/rules/pulpos/default_rules.mk
+++ b/rules/pulpos/default_rules.mk
@@ -1,4 +1,4 @@
-TARGET_BUILD_DIR = $(CURDIR)/build
+TARGET_BUILD_DIR = $(CURDIR)/build$(build_dir_ext)
 ifndef VERBOSE
 V = @
 endif
@@ -28,6 +28,10 @@ PULP_APP_CFLAGS += -I$(PULPRT_HOME)/include -I$(PULPRT_HOME)/kernel -I$(PULPOS_A
 
 PULP_APP_CFLAGS += $(foreach inc,$(PULPOS_MODULES),-I$(inc)/include)
 
+ifdef PULPRUN_PLATFORM
+platform=$(PULPRUN_PLATFORM)
+endif
+
 
 ifndef platform
 platform=gvsoc
@@ -171,7 +175,7 @@ clean:
 	$(V)rm -rf $(TARGET_BUILD_DIR)
 
 run:
-	pulp-run --platform=$(platform) --config=$(PULPRUN_TARGET) --binary=$(TARGETS) $(runner_args) prepare run
+	pulp-run --platform=$(platform) --config=$(PULPRUN_TARGET) --dir=$(TARGET_BUILD_DIR) --binary=$(TARGETS) $(runner_args) prepare run
 
 dis:
 	$(PULP_OBJDUMP) $(PULP_ARCH_OBJDFLAGS) $(disopt) $(TARGETS)
diff --git a/rules/pulpos/targets/pulp.mk b/rules/pulpos/targets/pulp.mk
index 603251c..44b698e 100644
--- a/rules/pulpos/targets/pulp.mk
+++ b/rules/pulpos/targets/pulp.mk
@@ -3,9 +3,9 @@ PULP_CFLAGS       +=  -D__riscv__
 PULP_ARCH_CFLAGS ?=  -march=rv32imcxgap9
 PULP_ARCH_LDFLAGS ?=  -march=rv32imcxgap9
 PULP_ARCH_OBJDFLAGS ?= -Mmarch=rv32imcxgap9
-PULP_CFLAGS    += -Werror -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -Wno-unused-function -Wundef -fdata-sections -ffunction-sections -include chips/pulp/config.h -I$(PULPRT_HOME)/include/chips/pulp
+PULP_CFLAGS    += -fdata-sections -ffunction-sections -include chips/pulp/config.h -I$(PULPRT_HOME)/include/chips/pulp
 PULP_OMP_CFLAGS    += -fopenmp -mnativeomp
-PULP_LDFLAGS = -nostartfiles -nostdlib -Wl,--gc-sections -L$(PULPRT_HOME)/kernel -Tchips/pulp/link.ld -lgcc
+PULP_LDFLAGS += -nostartfiles -nostdlib -Wl,--gc-sections -L$(PULPRT_HOME)/kernel -Tchips/pulp/link.ld -lgcc
 
 PULP_CC = riscv32-unknown-elf-gcc 
 PULP_AR ?= riscv32-unknown-elf-ar
diff --git a/rules/pulpos/targets/pulpissimo.mk b/rules/pulpos/targets/pulpissimo.mk
index e86e699..11fb450 100644
--- a/rules/pulpos/targets/pulpissimo.mk
+++ b/rules/pulpos/targets/pulpissimo.mk
@@ -3,9 +3,9 @@ PULP_CFLAGS       +=  -D__riscv__
 PULP_ARCH_CFLAGS ?=  -march=rv32imcxgap9
 PULP_ARCH_LDFLAGS ?=  -march=rv32imcxgap9
 PULP_ARCH_OBJDFLAGS ?= -Mmarch=rv32imcxgap9
-PULP_CFLAGS    += -Werror -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -Wno-unused-function -Wundef -fdata-sections -ffunction-sections -include chips/pulp/config.h -I$(PULPRT_HOME)/include/chips/pulpissimo
+PULP_CFLAGS    += -fdata-sections -ffunction-sections -include chips/pulp/config.h -I$(PULPRT_HOME)/include/chips/pulpissimo
 PULP_OMP_CFLAGS    += -fopenmp -mnativeomp
-PULP_LDFLAGS = -nostartfiles -nostdlib -Wl,--gc-sections -L$(PULPRT_HOME)/kernel -Tchips/pulpissimo/link.ld -lgcc
+PULP_LDFLAGS += -nostartfiles -nostdlib -Wl,--gc-sections -L$(PULPRT_HOME)/kernel -Tchips/pulpissimo/link.ld -lgcc
 
 PULP_CC = riscv32-unknown-elf-gcc 
 PULP_AR ?= riscv32-unknown-elf-ar