diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b30889..b6a86a7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,6 +37,9 @@ add_executable(oputest src/tests/op_unit_test.cc ${MA_CC_FILES})
 target_link_libraries(oputest ${GTEST_BOTH_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 add_test(NAME oputest COMMAND oputest)
 
+add_executable(opptest src/tests/op_perf_test.cc ${MA_CC_FILES})
+#target_link_libraries(oputest)
+
 #install(TARGETS testm DESTINATION install)
 
 set(CMAKE_INSTALL_PREFIX ..)
diff --git a/src/tests/op_perf_test.cc b/src/tests/op_perf_test.cc
new file mode 100644
index 0000000..3e753ce
--- /dev/null
+++ b/src/tests/op_perf_test.cc
@@ -0,0 +1,266 @@
+// -*- C++ -*-
+
+#include <cstdlib>
+#include <iostream>
+#include <cassert>
+
+#include "multi_array_header.h"
+
+#include <ctime>
+#include <cmath>
+
+namespace MAT = MultiArrayTools;
+
+namespace {
+
+    double xround(double arg)
+    {
+	return roundf(arg * 100000.) / 100000.;
+    }
+    
+    using namespace MAT;
+
+    template <class Factory>
+    void swapFactory(std::shared_ptr<RangeFactoryBase>& fptr)
+    {
+	auto nptr = std::make_shared<Factory>();
+	fptr = nptr;
+    }
+    
+    template <class Factory, typename T>
+    void swapFactory(std::shared_ptr<RangeFactoryBase>& fptr, std::initializer_list<T> ilist)
+    {
+	std::vector<T> tmp = ilist;
+	auto nptr = std::make_shared<Factory>( tmp );
+	fptr = nptr;
+    }
+
+    template <class Factory, typename T>
+    void swapFactory(std::shared_ptr<RangeFactoryBase>& fptr, std::vector<T>& ilist)
+    {
+	std::vector<T> tmp = ilist;
+	auto nptr = std::make_shared<Factory>( tmp );
+	fptr = nptr;
+    }
+
+    
+    template <class Factory, class... Rs>
+    void swapMFactory(std::shared_ptr<RangeFactoryBase>& fptr, const Rs&... rs)
+    {
+	auto nptr = std::make_shared<Factory>( rs... );
+	fptr = nptr;
+    }
+
+    template <typename... Ts>
+    auto mkt(Ts&&... ts) -> decltype(std::make_tuple(ts...))
+    {
+	return std::make_tuple(ts...);
+    }
+
+    template <typename... Ts>
+    auto mkts(Ts&&... ts) -> decltype(std::make_tuple(ts...))
+    {
+	return std::make_tuple(static_cast<size_t>( ts )...);
+    }
+    
+    class OpTest_Performance
+    {
+    public:
+
+	typedef SingleRangeFactory<size_t,SpaceType::ANY> SRF;
+	typedef SRF::oType SRange;
+
+	typedef MultiRangeFactory<SRange,SRange> MRF;
+	typedef MRF::oType MRange;
+
+	OpTest_Performance()
+	{
+	
+	    std::vector<size_t> initvec1(vs1);
+	    cv1.resize(vs1);
+	    for(size_t i = 0; i != vs1; ++i){
+		initvec1[i] = i;
+		cv1[i] = sqrt( static_cast<double>(i)*0.53 );
+	    }
+
+	    std::vector<size_t> initvec2(vs2);
+	    cv2.resize(vs2*vs1);
+	    for(size_t i = 0; i != vs2; ++i){
+		initvec2[i] = i;
+		for(size_t j = 0; j != vs1; ++j){
+		    cv2[i*vs1 + j] = static_cast<double>(i) * sin(static_cast<double>(j)*0.4);
+		}
+	    }
+
+	    swapFactory<SRF>(rfbptr, initvec1);
+	    sr1ptr = std::dynamic_pointer_cast<SRange>(rfbptr->create());
+
+	    swapFactory<SRF>(rfbptr, initvec2);
+	    sr2ptr = std::dynamic_pointer_cast<SRange>(rfbptr->create());
+
+	    swapMFactory<MRF>(rfbptr, sr2ptr, sr1ptr);
+	    mrptr = std::dynamic_pointer_cast<MRange>(rfbptr->create());
+	}
+
+	void PCheck();
+
+	
+    private:
+	//const size_t vs1 = 10000;
+	//const size_t vs2 = 1000;
+	const size_t vs1 = 4000;
+	const size_t vs2 = 2500;
+
+	std::shared_ptr<RangeFactoryBase> rfbptr;
+	std::shared_ptr<SRange> sr1ptr;
+	std::shared_ptr<SRange> sr2ptr;
+	std::shared_ptr<MRange> mrptr;
+
+	std::vector<double> cv1;
+	std::vector<double> cv2;
+    };
+
+    class OpTest_Spin
+    {
+    public:
+
+	typedef SpinRF SRF;
+	typedef SpinRange SR;
+	typedef MultiRangeFactory<SR,SR,SR,SR,SR,SR,SR,SR> SR8F;
+	typedef SR8F::oType SR8;
+
+	static const size_t s = 65536;
+	
+	OpTest_Spin()
+	{
+	    data.resize(s);
+	    for(size_t i = 0; i != s; ++i){
+		double arg = static_cast<double>( i - s ) - 0.1; 
+		data[i] = sin(arg)/arg;
+	    }
+	    SRF f;
+	    sr = std::dynamic_pointer_cast<SR>(f.create());
+	}
+
+	void contract();
+	
+    private:
+	
+	std::vector<double> data;
+	std::shared_ptr<SR> sr;
+    };
+
+    void OpTest_Spin::contract()
+    {
+	MultiArray<double,SR,SR,SR,SR,SR,SR,SR,SR> ma(sr, sr, sr, sr, sr, sr, sr, sr, data);
+	MultiArray<double,SR,SR> res1( sr, sr );
+	
+	auto alpha = MAT::getIndex<SR>();
+	auto beta = MAT::getIndex<SR>();
+	auto gamma = MAT::getIndex<SR>();
+	auto delta = MAT::getIndex<SR>();
+	auto deltap = MAT::getIndex<SR>();
+	
+	auto mix = MAT::mkMIndex( alpha, beta, gamma );
+
+	std::clock_t begin = std::clock();
+	res1(delta, deltap) = ma(delta, alpha, alpha, beta, beta, gamma, gamma, deltap).c(mix);
+	std::clock_t end = std::clock();
+	std::cout << "MultiArray time: " << static_cast<double>( end - begin ) / CLOCKS_PER_SEC
+		  << std::endl;
+	
+	std::vector<double> vres(4*4);
+
+	std::clock_t begin2 = std::clock();
+	for(size_t d = 0; d != 4; ++d){
+	    for(size_t p = 0; p != 4; ++p){
+		const size_t tidx = d*4 + p;
+		vres[tidx] = 0.;
+		for(size_t a = 0; a != 4; ++a){
+		    for(size_t b = 0; b != 4; ++b){
+			for(size_t c = 0; c != 4; ++c){
+			    const size_t sidx = d*4*4*4*4*4*4*4 + a*5*4*4*4*4 + b*5*4*4*4 + c*5*4 + p;
+			    vres[tidx] += data[sidx];
+			}
+		    }
+		}
+	    }
+	}
+	std::clock_t end2 = std::clock();
+
+	assert( xround(res1.at(mkts(0,0))) == xround(vres[0]) );
+	assert( xround(res1.at(mkts(0,1))) == xround(vres[1]) );
+	assert( xround(res1.at(mkts(0,2))) == xround(vres[2]) );
+	assert( xround(res1.at(mkts(0,3))) == xround(vres[3]) );
+	
+	assert( xround(res1.at(mkts(1,0))) == xround(vres[4]) );
+	assert( xround(res1.at(mkts(1,1))) == xround(vres[5]) );
+	assert( xround(res1.at(mkts(1,2))) == xround(vres[6]) );
+	assert( xround(res1.at(mkts(1,3))) == xround(vres[7]) );
+
+	assert( xround(res1.at(mkts(2,0))) == xround(vres[8]) );
+	assert( xround(res1.at(mkts(2,1))) == xround(vres[9]) );
+	assert( xround(res1.at(mkts(2,2))) == xround(vres[10]) );
+	assert( xround(res1.at(mkts(2,3))) == xround(vres[11]) );
+
+	assert( xround(res1.at(mkts(3,0))) == xround(vres[12]) );
+	assert( xround(res1.at(mkts(3,1))) == xround(vres[13]) );
+	assert( xround(res1.at(mkts(3,2))) == xround(vres[14]) );
+	assert( xround(res1.at(mkts(3,3))) == xround(vres[15]) );
+
+	std::cout << "std::vector - for loop time: " << static_cast<double>( end2 - begin2 ) / CLOCKS_PER_SEC
+		  << std::endl;
+	std::cout << "ratio: " << static_cast<double>( end - begin ) / static_cast<double>( end2 - begin2 ) << std::endl;
+    }    
+    
+    void OpTest_Performance::PCheck()
+    {
+	MultiArray<double,MRange> ma2(mrptr, cv2);
+	MultiArray<double,SRange> ma1(sr1ptr, cv1);
+	MultiArray<double,MRange> res(mrptr);
+
+	auto si1 = MAT::getIndex(sr1ptr);
+	auto si2 = MAT::getIndex(sr2ptr);
+	auto mi = MAT::getIndex(mrptr);
+	(*mi)(si2, si1);
+
+	std::clock_t begin = std::clock();
+	
+	res(mi) = ma2(mi) * ma1(si1);
+
+	std::clock_t end = std::clock();
+	std::cout << "MultiArray time: " << static_cast<double>( end - begin ) / CLOCKS_PER_SEC
+		  << std::endl;
+
+	std::vector<double> res2(vs1*vs2);
+	std::clock_t begin2 = std::clock();
+	
+	for(size_t i = 0; i != vs2; ++i){
+	    for(size_t j = 0; j != vs1; ++j){
+		res2[i*vs1 + j] = cv1[j] * cv2[i*vs1 + j];
+	    }
+	}
+
+	std::clock_t end2 = std::clock();
+	std::cout << "std::vector - for loop time: " << static_cast<double>( end2 - begin2 ) / CLOCKS_PER_SEC
+		  << std::endl;
+
+	std::cout << "ratio: " << static_cast<double>( end - begin ) / static_cast<double>( end2 - begin2 ) << std::endl;
+
+	assert( xround( res.at(mkt(7,9)) ) == xround(res2[7*vs1 + 9]) );
+	//assert( xround( res.at(mkt(700,900)) ) == xround(res2[700*vs1 + 900]) );
+	
+    }
+    
+} // anonymous namspace
+
+int main(int argc, char** argv)
+{
+    OpTest_Performance pt;
+    OpTest_Spin st;
+
+    st.contract();
+    pt.PCheck();
+    
+    return 0;
+}