diff --git a/base/serial/impl/sp3mm4amg/Makefile b/base/serial/impl/sp3mm4amg/Makefile
index 2f4a0585..1d6b28ee 100644
--- a/base/serial/impl/sp3mm4amg/Makefile
+++ b/base/serial/impl/sp3mm4amg/Makefile
@@ -14,7 +14,9 @@ LDFLAGS = -lm
 LIBDIR=../../../
 LIBFILE=$(LIBDIR)/$(LIBNAME)
 
-SP3MM_CORE_OBJS=commons/ompGetICV.o \
+SP3MM_CORE_OBJS=Sp3MM_CSR_OMP_Multi.o \
+				Sp3MM_CSR_OMP_SymbStep_Multi.o \
+				commons/ompGetICV.o \
 				commons/sparseUtilsMulti.o \
 				commons/utils.o \
 				lib/linuxK_rbtree_minimalized.o \
diff --git a/base/serial/impl/sp3mm4amg/fbind/psb_f_spmm_ub.c b/base/serial/impl/sp3mm4amg/fbind/psb_f_spmm_ub.c
index eb0f9c18..0a4a0c8b 100644
--- a/base/serial/impl/sp3mm4amg/fbind/psb_f_spmm_ub.c
+++ b/base/serial/impl/sp3mm4amg/fbind/psb_f_spmm_ub.c
@@ -1,5 +1,6 @@
 #include "../include/Sp3MM_CSR_OMP_Multi.h"
 #include "../include/utils.h"
+#include <stdio.h>
 
 enum impl_types
 {
@@ -71,7 +72,7 @@ void psb_f_spmm_merge_spacc(void **accumul,
     switch (impl_choice)
     {
     case ROW_BY_ROW_UB:
-        *info = spmmRowByRowPopulate_0(accumul, rows_sizes, tmp_matrix, c_as, c_ja, c_irp);
+        spmmRowByRowPopulate_0(accumul, rows_sizes, tmp_matrix, c_as, c_ja, c_irp);
         break;
     default:
         break;
diff --git a/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_SymbStep_Multi.h b/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_SymbStep_Multi.h
index f46a2779..e02828e4 100644
--- a/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_SymbStep_Multi.h
+++ b/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_SymbStep_Multi.h
@@ -52,7 +52,7 @@
 	///generate colParts versions
 	#define COL_PARTS	COL_PARTS_ON
 		#include "Sp3MM_CSR_OMP_SymbStep_Generic.h"
-		//generate outIdxs AND colParts ve sions
+		//generate outIdxs AND colParts versions
 		#define OUT_IDXS 	OUT_IDXS_ON
 		#include "Sp3MM_CSR_OMP_SymbStep_Generic.h"
 
diff --git a/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_UB_Generic.h b/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_UB_Generic.h
index dc59a6e7..f1e19402 100644
--- a/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_UB_Generic.h
+++ b/base/serial/impl/sp3mm4amg/include/Sp3MM_CSR_OMP_UB_Generic.h
@@ -58,6 +58,11 @@ SPMM CAT(spmmSerial_,OFF_F); //mono thread version for debug oracle-less
  * return resulting product matrix
  */
 SPMM CAT(spmmRowByRow_,OFF_F);
+
+idx_t CAT(spmmRowByRowCalculateSize_,OFF_F) (spmat* A, spmat*B, CONFIG* cfg, void** accumul, void **rows_sizes, void** tmp_matrix);
+
+void CAT(spmmRowByRowPopulate_,OFF_F)(void** accumul, void** rows_sizes, void** tmp_matrix, double** AS, idx_t** JA, idx_t** IRP);
+
 /*
  * sparse parallel implementation of @A * @B parallelizing Gustavson 
  * with partitioning of @A in @conf->gridRows blocks of rows