looks like mkl requires memory on host

u75572 · u75572 · commit 49edafcd8e61 · 2021-08-30T16:43:01.000-07:00
diff --git a/dpnp/backend/kernels/dpnp_krnl_common.cpp b/dpnp/backend/kernels/dpnp_krnl_common.cpp
@@ -316,11 +316,12 @@ void dpnp_matmul_c(void* array1_in, void* array2_in, void* result1, size_t size_
     }
 
     cl::sycl::event event;
-    DPNPC_ptr_adapter<_DataType> input1_ptr(array1_in, size_m * size_k);
-    DPNPC_ptr_adapter<_DataType> input2_ptr(array2_in, size_k * size_n);
+    DPNPC_ptr_adapter<_DataType> input1_ptr(array1_in, size_m * size_k, true);
+    DPNPC_ptr_adapter<_DataType> input2_ptr(array2_in, size_k * size_n, true);
+    DPNPC_ptr_adapter<_DataType> result_ptr(result1, size_m * size_n, true, true);
     _DataType* array_1 = input1_ptr.get_ptr();
     _DataType* array_2 = input2_ptr.get_ptr();
-    _DataType* result = reinterpret_cast<_DataType*>(result1);
+    _DataType* result = result_ptr.get_ptr();
 
     if constexpr (std::is_same<_DataType, double>::value || std::is_same<_DataType, float>::value)
     {

Original file line number	Diff line number	Diff line change
`@@ -316,11 +316,12 @@ void dpnp_matmul_c(void* array1_in, void* array2_in, void* result1, size_t size_`
`316`	`316`	`}`
`317`	`317`
`318`	`318`	`cl::sycl::event event;`
`319`		`- DPNPC_ptr_adapter<_DataType> input1_ptr(array1_in, size_m * size_k);`
`320`		`- DPNPC_ptr_adapter<_DataType> input2_ptr(array2_in, size_k * size_n);`
	`319`	`+ DPNPC_ptr_adapter<_DataType> input1_ptr(array1_in, size_m * size_k, true);`
	`320`	`+ DPNPC_ptr_adapter<_DataType> input2_ptr(array2_in, size_k * size_n, true);`
	`321`	`+ DPNPC_ptr_adapter<_DataType> result_ptr(result1, size_m * size_n, true, true);`
`321`	`322`	`_DataType* array_1 = input1_ptr.get_ptr();`
`322`	`323`	`_DataType* array_2 = input2_ptr.get_ptr();`
`323`		`- _DataType* result = reinterpret_cast<_DataType*>(result1);`
	`324`	`+ _DataType* result = result_ptr.get_ptr();`
`324`	`325`
`325`	`326`	`if constexpr (std::is_same<_DataType, double>::value \|\| std::is_same<_DataType, float>::value)`
`326`	`327`	`{`