Add GPU test for cpp dynprog_multiply.

misc/test/CMakeLists.txt

@@ -200,7 +200,7 @@ if(MATIO_LIB_FILE AND MATIO_INC_DIR AND BUILD_READ_MAT_FILE AND NOT NOCPPTESTS)
 	endif()
 
 	if(USE_GPU_MOD)
-		list(APPEND tests faust_gpu_mod hierarchical2020_gpu test_matdense_gpu_mod test_matsparse_gpu_mod test_matbsr_gpu_mod test_transform_gpu_mod test_vect_gpu_mod test_transform_helper_gpu_mod hierarchical2020_gpu2 hierarchical2020Hadamard_gpu2 MEG_factorization test_prox_sp_gpu test_prox_splin_spcol_gpu)
+		list(APPEND tests faust_gpu_mod hierarchical2020_gpu test_matdense_gpu_mod test_matsparse_gpu_mod test_matbsr_gpu_mod test_transform_gpu_mod test_vect_gpu_mod test_transform_helper_gpu_mod hierarchical2020_gpu2 hierarchical2020Hadamard_gpu2 MEG_factorization test_prox_sp_gpu test_prox_splin_spcol_gpu test_dynprog_mul_gpu)
 	endif()
 
 	foreach(TEST_FPP float double complex<float> complex<double>)

misc/test/src/C++/test_dynprog_mul_gpu.cpp.in

+#include "faust_TransformHelper.h"
+#include "faust_TransformHelper_gpu.h"
+#include "faust_prod_opt_gen.h"
+#include <cstdlib>
+#include <ctime>
+
+typedef @TEST_FPP@ FPP;
+using namespace Faust;
+
+int main()
+{
+	unsigned int min_num_factors = 2;
+	unsigned int max_num_factors = 10;
+	unsigned int min_dim_size = 10;
+	unsigned int max_dim_size = 1024;
+	float density = .5f;
+	bool per_row = true;
+	auto F = TransformHelper<FPP, GPU2>::randFaust(MIXED, min_num_factors, max_num_factors, min_dim_size, max_dim_size, density, per_row);
+	//TODO: fix always two factors
+	F->display();
+	// convert the Faust to a vector of matrices
+	std::vector<MatGeneric<FPP, GPU2>*> data;
+	for(auto f: *F)
+	{
+		f->Display();
+		data.push_back(f);
+	}
+	auto res_mat = dynprog_multiply(data);
+	auto ref_mat = F->get_product();
+
+	auto test_mat = ref_mat;
+	test_mat -= res_mat;
+	auto re = test_mat.norm() / ref_mat.norm();
+	std::cout << "rel. err of test_mat vs ref_mat: " <<  re << std::endl;
+	assert(re < 1e-4);
+
+	return EXIT_SUCCESS;
+}