Merge branch 'develop' into jit-unroll-stride

examples/migraphx/custom_op_hip_kernel/custom_op_hip_kernel.cpp

@@ -45,6 +45,13 @@ __global__ void vector_square(T* C_d, const T* A_d, size_t N)
 struct square_custom_op final : migraphx::experimental_custom_op_base
 {
     virtual std::string name() const override { return "square_custom_op"; }
+
+    // flag to identify whether custom op runs on the GPU or on the host.
+    // Based on this flag MIGraphX would inject necessary copies to and from GPU for the input and
+    // output buffers as necessary. Therefore if custom_op runs on GPU then it can assume its input
+    // buffers are in GPU memory, and similarly for the host
+    virtual bool runs_on_offload_target() const override { return true; }
+
     virtual migraphx::argument
     compute(migraphx::context ctx, migraphx::shape, migraphx::arguments inputs) const override
     {
@@ -54,7 +61,7 @@ struct square_custom_op final : migraphx::experimental_custom_op_base
         // is output argument, so it should be returned from compute method.
         auto* input_buffer  = reinterpret_cast<float*>(inputs[0].data());
         auto* output_buffer = reinterpret_cast<float*>(inputs[1].data());
-        size_t n_elements   = inputs[0].get_shape().bytes() / sizeof(inputs[0].get_shape().type());
+        size_t n_elements   = inputs[0].get_shape().elements();
         MIGRAPHX_HIP_ASSERT(hipSetDevice(0));
         const unsigned blocks            = 512;
         const unsigned threads_per_block = 256;
@@ -103,7 +110,7 @@ int main(int argc, const char* argv[])
     options.set_offload_copy();
     p.compile(migraphx::target("gpu"), options);
     migraphx::program_parameters pp;
-    std::vector<float> x_data(s.bytes() / sizeof(s.type()));
+    std::vector<float> x_data(s.elements());
     std::iota(x_data.begin(), x_data.end(), 0);
     pp.add("x", migraphx::argument(s, x_data.data()));
     auto results                       = p.eval(pp);

examples/migraphx/custom_op_miopen_kernel/custom_op_miopen_kernel.cpp

@@ -93,6 +93,13 @@ inline auto make_activation_descriptor(miopenActivationMode_t mode,
 struct abs_custom_op final : migraphx::experimental_custom_op_base
 {
     virtual std::string name() const override { return "abs_custom_op"; }
+
+    // flag to identify whether custom op runs on the GPU or on the host.
+    // Based on this flag MIGraphX would inject necessary copies to and from GPU for the input and
+    // output buffers as necessary. Therefore if custom_op runs on GPU then it can assume its input
+    // buffers are in GPU memory, and similarly for the host
+    virtual bool runs_on_offload_target() const override { return true; }
+
     virtual migraphx::argument compute(migraphx::context ctx,
                                        migraphx::shape output_shape,
                                        migraphx::arguments args) const override

examples/migraphx/custom_op_rocblas_kernel/custom_op_rocblas_kernel.cpp

@@ -51,6 +51,13 @@ rocblas_handle create_rocblas_handle_ptr(migraphx::context& ctx)
 struct sscal_custom_op final : migraphx::experimental_custom_op_base
 {
     virtual std::string name() const override { return "sscal_custom_op"; }
+
+    // flag to identify whether custom op runs on the GPU or on the host.
+    // Based on this flag MIGraphX would inject necessary copies to and from GPU for the input and
+    // output buffers as necessary. Therefore if custom_op runs on GPU then it can assume its input
+    // buffers are in GPU memory, and similarly for the host
+    virtual bool runs_on_offload_target() const override { return true; }
+
     virtual migraphx::argument compute(migraphx::context ctx,
                                        migraphx::shape output_shape,
                                        migraphx::arguments args) const override
@@ -107,7 +114,7 @@ int main(int argc, const char* argv[])
     options.set_offload_copy();
     p.compile(migraphx::target("gpu"), options);
     migraphx::program_parameters pp;
-    std::vector<float> x_data(x_shape.bytes() / sizeof(x_shape.type()));
+    std::vector<float> x_data(x_shape.elements());
     std::vector<float> scale_data{-1};
     std::iota(x_data.begin(), x_data.end(), 0);
     pp.add("x", migraphx::argument(x_shape, x_data.data()));

src/api/api.cpp

@@ -21,6 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+#include <migraphx/execution_environment.hpp>
 #include <migraphx/migraphx.h>
 #include <migraphx/rank.hpp>
 #include <migraphx/shape.hpp>
@@ -166,6 +167,13 @@ void set_output_names(tf_options& options, std::vector<const char*> names)
     options.output_node_names = std::vector<std::string>(names.begin(), names.end());
 }
 
+std::vector<argument>
+run_async(program& p, const parameter_map& params, void* s, std::string_view name)
+{
+    execution_environment exec_env{any_ptr(s, name), true};
+    return p.eval(params, exec_env);
+}
+
 template <class Value>
 std::vector<const char*> get_names(const std::unordered_map<std::string, Value>& m)
 {
@@ -265,11 +273,18 @@ struct experimental_custom_op
 template <class CustomOp>
 struct custom_operation
 {
+
     template <class Self, class F>
     static auto reflect(Self&, F)
     {
         return pack();
     }
+
+    value attributes() const
+    {
+        return {{"custom_op", true}, {"target", op.runs_on_offload_target() ? "gpu" : "cpu"}};
+    }
+
     CustomOp op;
     std::string name() const { return op.xobject.name; }
 
@@ -284,6 +299,23 @@ struct custom_operation
     {
         return op.compute(std::move(ctx), std::move(output_shape), std::move(inputs));
     }
+
+    std::ptrdiff_t output_alias(std::vector<shape> inputs) const
+    {
+        auto alias_vec = op.output_alias(std::move(inputs));
+        // TODO: For now, only support one output alias
+        if(alias_vec.empty())
+        {
+            return -1;
+        }
+        if(alias_vec.size() > 1)
+        {
+            MIGRAPHX_THROW("Currently, CustomOps in MIGraphX only supports one output_alias");
+        }
+        return alias_vec.front();
+    }
+
+    bool runs_on_offload_target() const { return op.runs_on_offload_target(); }
 };
 
 template <class CustomOp>
@@ -613,9 +645,9 @@ struct migraphx_experimental_custom_op
                                migraphx::shape output,
                                std::vector<migraphx::argument> inputs) const
     {
-        std::remove_pointer_t<migraphx_argument_t> out;
         if(compute_f == nullptr)
             throw std::runtime_error("compute function is missing.");
+        std::remove_pointer_t<migraphx_argument_t> out;
         std::array<char, 256> exception_msg;
         exception_msg.front() = '\0';
         auto api_error_result = compute_f(&out,
@@ -637,9 +669,9 @@ struct migraphx_experimental_custom_op
     migraphx_experimental_custom_op_compute_shape compute_shape_f = nullptr;
     migraphx::shape compute_shape(std::vector<migraphx::shape> inputs) const
     {
-        std::remove_pointer_t<migraphx_shape_t> out;
         if(compute_shape_f == nullptr)
             throw std::runtime_error("compute_shape function is missing.");
+        std::remove_pointer_t<migraphx_shape_t> out;
         std::array<char, 256> exception_msg;
         exception_msg.front() = '\0';
         auto api_error_result = compute_shape_f(&out,
@@ -655,6 +687,49 @@ struct migraphx_experimental_custom_op
         }
         return (&out)->object;
     }
+
+    migraphx_experimental_custom_op_output_alias output_alias_f = nullptr;
+    std::vector<size_t> output_alias(std::vector<migraphx::shape> inputs) const
+    {
+        if(output_alias_f == nullptr)
+            throw std::runtime_error("output_alias function is missing.");
+        std::array<size_t, 1024> out;
+        std::remove_pointer_t<size_t*> out_size = 1024;
+        std::array<char, 256> exception_msg;
+        exception_msg.front() = '\0';
+        auto api_error_result = output_alias_f(out.data(),
+                                               &out_size,
+                                               object_ptr.data,
+                                               exception_msg.data(),
+                                               exception_msg.size(),
+                                               object_cast<migraphx_shapes_t>(&(inputs)));
+        if(api_error_result != migraphx_status_success)
+        {
+            const std::string exception_str(exception_msg.data());
+            throw std::runtime_error("Error in output_alias of: " +
+                                     std::string(object_ptr.obj_typename) + ": " + exception_str);
+        }
+        return {out.begin(), out.begin() + out_size}; // cppcheck-suppress returnDanglingLifetime;
+    }
+
+    migraphx_experimental_custom_op_runs_on_offload_target runs_on_offload_target_f = nullptr;
+    bool runs_on_offload_target() const
+    {
+        if(runs_on_offload_target_f == nullptr)
+            throw std::runtime_error("runs_on_offload_target function is missing.");
+        std::remove_pointer_t<bool*> out;
+        std::array<char, 256> exception_msg;
+        exception_msg.front() = '\0';
+        auto api_error_result = runs_on_offload_target_f(
+            &out, object_ptr.data, exception_msg.data(), exception_msg.size());
+        if(api_error_result != migraphx_status_success)
+        {
+            const std::string exception_str(exception_msg.data());
+            throw std::runtime_error("Error in runs_on_offload_target of: " +
+                                     std::string(object_ptr.obj_typename) + ": " + exception_str);
+        }
+        return out;
+    }
 };
 
 extern "C" migraphx_status migraphx_shape_destroy(migraphx_shape_t shape)
@@ -758,6 +833,16 @@ extern "C" migraphx_status migraphx_shape_type(migraphx_shape_datatype_t* out,
     return api_error_result;
 }
 
+extern "C" migraphx_status migraphx_shape_elements(size_t* out, const_migraphx_shape_t shape)
+{
+    auto api_error_result = migraphx::try_([&] {
+        if(shape == nullptr)
+            MIGRAPHX_THROW(migraphx_status_bad_param, "Bad parameter shape: Null pointer");
+        *out = (shape->object).elements();
+    });
+    return api_error_result;
+}
+
 extern "C" migraphx_status migraphx_shape_bytes(size_t* out, const_migraphx_shape_t shape)
 {
     auto api_error_result = migraphx::try_([&] {
@@ -791,6 +876,16 @@ extern "C" migraphx_status migraphx_shape_standard(bool* out, const_migraphx_sha
     return api_error_result;
 }
 
+extern "C" migraphx_status migraphx_shape_index(size_t* out, const_migraphx_shape_t shape, size_t i)
+{
+    auto api_error_result = migraphx::try_([&] {
+        if(shape == nullptr)
+            MIGRAPHX_THROW(migraphx_status_bad_param, "Bad parameter shape: Null pointer");
+        *out = (shape->object).index((i));
+    });
+    return api_error_result;
+}
+
 extern "C" migraphx_status migraphx_argument_destroy(migraphx_argument_t argument)
 {
     auto api_error_result = migraphx::try_([&] { destroy((argument)); });
@@ -1348,6 +1443,23 @@ extern "C" migraphx_status migraphx_program_run(migraphx_arguments_t* out,
     return api_error_result;
 }
 
+extern "C" migraphx_status migraphx_program_run_async(migraphx_arguments_t* out,
+                                                      migraphx_program_t program,
+                                                      migraphx_program_parameters_t params,
+                                                      void* s,
+                                                      const char* name)
+{
+    auto api_error_result = migraphx::try_([&] {
+        if(program == nullptr)
+            MIGRAPHX_THROW(migraphx_status_bad_param, "Bad parameter program: Null pointer");
+        if(params == nullptr)
+            MIGRAPHX_THROW(migraphx_status_bad_param, "Bad parameter params: Null pointer");
+        *out = allocate<migraphx_arguments_t>(
+            migraphx::run_async((program->object), (params->object), (s), (name)));
+    });
+    return api_error_result;
+}
+
 extern "C" migraphx_status
 migraphx_program_equal(bool* out, const_migraphx_program_t program, const_migraphx_program_t x)
 {
@@ -1879,6 +1991,22 @@ extern "C" migraphx_status migraphx_experimental_custom_op_set_compute_shape(
     return api_error_result;
 }
 
+extern "C" migraphx_status
+migraphx_experimental_custom_op_set_output_alias(migraphx_experimental_custom_op_t obj,
+                                                 migraphx_experimental_custom_op_output_alias input)
+{
+    auto api_error_result = migraphx::try_([&] { (obj)->output_alias_f = (input); });
+    return api_error_result;
+}
+
+extern "C" migraphx_status migraphx_experimental_custom_op_set_runs_on_offload_target(
+    migraphx_experimental_custom_op_t obj,
+    migraphx_experimental_custom_op_runs_on_offload_target input)
+{
+    auto api_error_result = migraphx::try_([&] { (obj)->runs_on_offload_target_f = (input); });
+    return api_error_result;
+}
+
 extern "C" migraphx_status
 migraphx_experimental_custom_op_register(migraphx_experimental_custom_op_t experimental_custom_op)
 {

src/api/include/migraphx/migraphx.h

@@ -26,7 +26,6 @@
 
 #include <stdlib.h>
 #include <stdbool.h>
-
 // Add new types here
 // clang-format off
 #define MIGRAPHX_SHAPE_VISIT_TYPES(m) \
@@ -144,6 +143,16 @@ typedef migraphx_status (*migraphx_experimental_custom_op_compute_shape)(migraph
                                                                          size_t exception_msg_size,
                                                                          migraphx_shapes_t inputs);
 
+typedef migraphx_status (*migraphx_experimental_custom_op_output_alias)(size_t* out,
+                                                                        size_t* out_size,
+                                                                        void* obj,
+                                                                        char* exception_msg,
+                                                                        size_t exception_msg_size,
+                                                                        migraphx_shapes_t inputs);
+
+typedef migraphx_status (*migraphx_experimental_custom_op_runs_on_offload_target)(
+    bool* out, void* obj, char* exception_msg, size_t exception_msg_size);
+
 typedef migraphx_status (*migraphx_experimental_custom_op_copy)(void** out, void* input);
 
 typedef migraphx_status (*migraphx_experimental_custom_op_delete)(void* input);
@@ -175,6 +184,8 @@ migraphx_shape_strides(const size_t** out, size_t* out_size, const_migraphx_shap
 
 migraphx_status migraphx_shape_type(migraphx_shape_datatype_t* out, const_migraphx_shape_t shape);
 
+migraphx_status migraphx_shape_elements(size_t* out, const_migraphx_shape_t shape);
+
 migraphx_status migraphx_shape_bytes(size_t* out, const_migraphx_shape_t shape);
 
 migraphx_status
@@ -182,6 +193,8 @@ migraphx_shape_equal(bool* out, const_migraphx_shape_t shape, const_migraphx_sha
 
 migraphx_status migraphx_shape_standard(bool* out, const_migraphx_shape_t shape);
 
+migraphx_status migraphx_shape_index(size_t* out, const_migraphx_shape_t shape, size_t i);
+
 migraphx_status migraphx_argument_destroy(migraphx_argument_t argument);
 
 migraphx_status migraphx_argument_assign_to(migraphx_argument_t output,
@@ -344,6 +357,12 @@ migraphx_status migraphx_program_run(migraphx_arguments_t* out,
                                      migraphx_program_t program,
                                      migraphx_program_parameters_t params);
 
+migraphx_status migraphx_program_run_async(migraphx_arguments_t* out,
+                                           migraphx_program_t program,
+                                           migraphx_program_parameters_t params,
+                                           void* s,
+                                           const char* name);
+
 migraphx_status
 migraphx_program_equal(bool* out, const_migraphx_program_t program, const_migraphx_program_t x);
 
@@ -502,6 +521,13 @@ migraphx_experimental_custom_op_set_compute(migraphx_experimental_custom_op_t ob
 migraphx_status migraphx_experimental_custom_op_set_compute_shape(
     migraphx_experimental_custom_op_t obj, migraphx_experimental_custom_op_compute_shape input);
 
+migraphx_status migraphx_experimental_custom_op_set_output_alias(
+    migraphx_experimental_custom_op_t obj, migraphx_experimental_custom_op_output_alias input);
+
+migraphx_status migraphx_experimental_custom_op_set_runs_on_offload_target(
+    migraphx_experimental_custom_op_t obj,
+    migraphx_experimental_custom_op_runs_on_offload_target input);
+
 migraphx_status
 migraphx_experimental_custom_op_register(migraphx_experimental_custom_op_t experimental_custom_op);
 

src/api/include/migraphx/migraphx.hpp

@@ -25,10 +25,12 @@
 #define MIGRAPHX_GUARD_API_RTGLIB_MIGRAPHX_HPP
 
 #include "migraphx.h"
+#include <algorithm>
 #include <cstring>
 #include <initializer_list>
 #include <migraphx/migraphx.h>
 #include <memory>
+#include <numeric>
 #include <exception>
 #include <vector>
 #include <cassert>
@@ -340,6 +342,11 @@ struct handle_base : handle_lookup<Derived, std::remove_cv_t<T>>
         this->set_handle(p, std::move(lifetime));                                                  \
     }
 
+template <size_t N>
+struct out_params
+{
+};
+
 template <class Base>
 struct interface_base : Base
 {
@@ -391,7 +398,22 @@ struct interface_base : Base
     }
 
     template <class T, class Setter, class F>
-    void set_fp(Setter setter, F pf)
+    void set_fp(Setter setter, F pf, out_params<2>)
+    {
+        static F f = pf;
+        (void)f; // avoid warning on gcc
+        call(setter,
+             this->get_handle_ptr(),
+             [](auto out1, auto out2, void* obj, char* ex_msg, size_t ex_msg_size, auto... xs)
+                 -> migraphx_status {
+                 return try_([&] { call_cast_arg<T>(rank<2>{}, f, out1, out2, obj, xs...); },
+                             ex_msg,
+                             ex_msg_size);
+             });
+    }
+
+    template <class T, class Setter, class F>
+    void set_fp(Setter setter, F pf, out_params<1>)
     {
         static F f = pf;
         (void)f; // avoid warning on gcc
@@ -405,13 +427,29 @@ struct interface_base : Base
     }
 
     template <class T, class Setter, class F>
-    void set_auto_fp(Setter setter, F f)
+    void set_fp(Setter setter, F pf, out_params<0>)
     {
-        return set_fp<T>(setter, [=](T& obj, auto out, auto... xs) {
-            auto_invoke(f, out, obj, auto_convert_param(rank<2>{}, xs)...);
+        static F f = pf;
+        (void)f; // avoid warning on gcc
+        call(setter,
+             this->get_handle_ptr(),
+             [](void* obj, char* ex_msg, size_t ex_msg_size, auto... xs) -> migraphx_status {
+                 return try_(
+                     [&] { call_cast_arg<T>(rank<0>{}, f, obj, xs...); }, ex_msg, ex_msg_size);
              });
     }
 
+    template <class T, class Setter, class F, class Out>
+    void set_auto_fp(Setter setter, F f, Out nums)
+    {
+        return set_fp<T>(
+            setter,
+            [=](T& obj, auto out1, auto out2, auto... xs) {
+                auto_invoke(f, out1, out2, obj, auto_convert_param(rank<2>{}, xs)...);
+            },
+            nums);
+    }
+
     struct no_out_arg
     {
     };
@@ -419,7 +457,7 @@ struct interface_base : Base
     template <class T, class F, class X, class... Xs, class = std::enable_if_t<std::is_void<X>{}>>
     static void call_cast_arg(rank<0>, F f, X* obj, Xs... xs)
     {
-        f(reinterpret_cast<T*>(obj), no_out_arg{}, xs...);
+        f(reinterpret_cast<T*>(obj), no_out_arg{}, no_out_arg{}, xs...);
     }
 
     template <class T,
@@ -430,17 +468,35 @@ struct interface_base : Base
               class = std::enable_if_t<std::is_void<X>{}>>
     static void call_cast_arg(rank<1>, F f, R result, X* obj, Xs... xs)
     {
-        f(*reinterpret_cast<T*>(obj), result, xs...);
+        f(*reinterpret_cast<T*>(obj), result, no_out_arg{}, xs...);
+    }
+
+    template <class T,
+              class F,
+              class R1,
+              class R2,
+              class X,
+              class... Xs,
+              class = std::enable_if_t<std::is_void<X>{}>>
+    static void call_cast_arg(rank<2>, F f, R1 result1, R2 result2, X* obj, Xs... xs)
+    {
+        f(*reinterpret_cast<T*>(obj), result1, result2, xs...);
+    }
+
+    template <class F, class T1, class T2, class... Ts>
+    void auto_invoke(F f, T1* out1, T2* out2, Ts&&... xs)
+    {
+        auto_assign(rank<2>{}, out1, out2, f(std::forward<Ts>(xs)...));
     }
 
     template <class F, class T, class... Ts>
-    void auto_invoke(F f, T* out, Ts&&... xs)
+    void auto_invoke(F f, T* out, no_out_arg, Ts&&... xs)
     {
-        auto_assign(rank<2>{}, out, f(std::forward<Ts>(xs)...));
+        auto_assign(rank<1>{}, out, f(std::forward<Ts>(xs)...));
     }
 
     template <class F, class T, class... Ts>
-    void auto_invoke(F f, no_out_arg, Ts&&... xs)
+    void auto_invoke(F f, no_out_arg, no_out_arg, Ts&&... xs)
     {
         f(std::forward<Ts>(xs)...);
     }
@@ -469,7 +525,7 @@ struct interface_base : Base
     template <class T, class U>
     void auto_assign(rank<0>, T* out, U x)
     {
-        return *out = x;
+        *out = x;
     }
 
     template <class T, class U>
@@ -477,12 +533,21 @@ struct interface_base : Base
     {
         x.assign_to_handle(out);
     }
+
+    template <class T1, class T2, class U, class = std::enable_if_t<std::is_same<T2, size_t>{}>>
+    auto auto_assign(rank<2>, T1* out_ptr, T2* out_size, U x)
+    {
+        *out_size = std::min(*out_size, x.size());
+        std::copy_n(x.begin(), *out_size, out_ptr);
+    }
 };
 
 // NOLINTNEXTLINE
-#define MIGRAPHX_INTERFACE_LIFT(T, prefix, name)          \
-    this->set_auto_fp<T>(&migraphx_##prefix##_set_##name, \
-                         [](T& x, auto... xs) { return x.name(xs...); })
+#define MIGRAPHX_INTERFACE_LIFT(n_out, T, prefix, name) \
+    this->set_auto_fp<T>(                               \
+        &migraphx_##prefix##_set_##name,                \
+        [](T& x, auto... xs) { return x.name(xs...); }, \
+        out_params<n_out>{})
 
 template <class Base, class T>
 using require_interface =
@@ -567,6 +632,13 @@ struct shape : MIGRAPHX_CONST_HANDLE_BASE(shape)
         return pout;
     }
 
+    size_t elements() const
+    {
+        size_t pout;
+        call(&migraphx_shape_elements, &pout, this->get_handle_ptr());
+        return pout;
+    }
+
     size_t bytes() const
     {
         size_t pout;
@@ -581,6 +653,14 @@ struct shape : MIGRAPHX_CONST_HANDLE_BASE(shape)
         return result;
     }
 
+    // map element index to space index
+    size_t index(size_t i) const
+    {
+        size_t result;
+        call(&migraphx_shape_index, &result, this->get_handle_ptr(), i);
+        return result;
+    }
+
     friend bool operator==(const shape& px, const shape& py)
     {
         bool pout;
@@ -628,9 +708,15 @@ struct argument : MIGRAPHX_CONST_HANDLE_BASE(argument)
     template <typename T>
     std::vector<T> as_vector() const
     {
-        size_t vector_len = this->get_shape().bytes() / sizeof(T);
+        auto ss           = this->get_shape();
+        auto num_elements = ss.elements();
+        std::vector<T> res(num_elements);
         T* buffer_ptr = reinterpret_cast<T*>(this->data());
-        return {buffer_ptr, buffer_ptr + vector_len};
+        for(size_t i = 0; i < num_elements; i++)
+        {
+            res[i] = buffer_ptr[ss.index(i)];
+        }
+        return res;
     }
 
     /// Generate an argument using random data
@@ -979,6 +1065,20 @@ struct program : MIGRAPHX_HANDLE_BASE(program)
         return arguments(pout, own{});
     }
 
+    template <class Stream>
+    /// Overloaded to allow for execution_environment input
+    arguments run_async(const program_parameters& pparams, Stream* s) const
+    {
+        migraphx_arguments_t pout;
+        call(&migraphx_program_run_async,
+             &pout,
+             this->get_handle_ptr(),
+             pparams.get_handle_ptr(),
+             s,
+             get_type_name<Stream>().c_str());
+        return arguments(pout, own{});
+    }
+
     void print() const { call(&migraphx_program_print, this->get_handle_ptr()); }
 
     program sort()
@@ -1255,6 +1355,9 @@ struct experimental_custom_op_base
     virtual std::string name() const                                            = 0;
     virtual argument compute(context ctx, shape output, arguments inputs) const = 0;
     virtual shape compute_shape(shapes inputs) const                            = 0;
+    virtual std::vector<size_t> output_alias(shapes) const { return {}; }
+    // TODO: Return target string instead of bool
+    virtual bool runs_on_offload_target() const = 0;
     virtual ~experimental_custom_op_base()      = default;
 };
 
@@ -1267,8 +1370,10 @@ struct experimental_custom_op : interface_base<MIGRAPHX_HANDLE_BASE(experimental
                              obj,
                              get_type_name(obj).c_str(),
                              obj.name().c_str());
-        MIGRAPHX_INTERFACE_LIFT(T, experimental_custom_op, compute_shape);
-        MIGRAPHX_INTERFACE_LIFT(T, experimental_custom_op, compute);
+        MIGRAPHX_INTERFACE_LIFT(1, T, experimental_custom_op, compute_shape);
+        MIGRAPHX_INTERFACE_LIFT(1, T, experimental_custom_op, compute);
+        MIGRAPHX_INTERFACE_LIFT(2, T, experimental_custom_op, output_alias);
+        MIGRAPHX_INTERFACE_LIFT(1, T, experimental_custom_op, runs_on_offload_target);
     }
 
     void register_op() { call(&migraphx_experimental_custom_op_register, this->get_handle_ptr()); }

src/api/migraphx.py

@@ -115,6 +115,7 @@ def shape(h):
              const=True)
     h.method('strides', returns='const std::vector<size_t>&', const=True)
     h.method('type', returns='migraphx::shape::type_t', const=True)
+    h.method('elements', returns='size_t', const=True)
     h.method('bytes', returns='size_t', const=True)
     h.method('equal',
              api.params(x='const migraphx::shape&'),
@@ -122,6 +123,7 @@ def shape(h):
              returns='bool',
              const=True)
     h.method('standard', returns='bool', const=True)
+    h.method('index', api.params(i='size_t'), returns='size_t', const=True)
 
 
 @auto_handle()
@@ -274,6 +276,13 @@ def program(h):
                  params='std::unordered_map<std::string, migraphx::argument>'),
              invoke='migraphx::run($@)',
              returns='std::vector<migraphx::argument>')
+    h.method('run_async',
+             api.params(
+                 params='std::unordered_map<std::string, migraphx::argument>',
+                 s='void*',
+                 name='const char *'),
+             invoke='migraphx::run_async($@)',
+             returns='std::vector<migraphx::argument>')
     h.method('equal',
              api.params(x='const migraphx::program&'),
              invoke='migraphx::equal($@)',
@@ -450,4 +459,8 @@ def experimental_custom_op(h):
     h.virtual('compute_shape',
               api.params(inputs='std::vector<migraphx::shape>'),
               returns='migraphx::shape')
+    h.virtual('output_alias',
+              api.params(inputs='std::vector<migraphx::shape>'),
+              returns='std::vector<size_t>')
+    h.virtual('runs_on_offload_target', returns='bool')
     h.method('register', invoke='migraphx::register_custom_op($@)')

src/include/migraphx/context.hpp

@@ -66,6 +66,15 @@ any_ptr get_queue_context(T&)
 {
     return {};
 }
+template <class T>
+void wait_for_context(T&, any_ptr)
+{
+}
+
+template <class T>
+void finish_on_context(T&, any_ptr)
+{
+}
 
 #ifdef TYPE_ERASED_DECLARATION
 
@@ -78,6 +87,10 @@ struct context
     void from_value(const value& v);
     // (optional)
     any_ptr get_queue();
+    // (optional)
+    void wait_for(any_ptr queue);
+    // (optional)
+    void finish_on(any_ptr queue);
     //
     void finish() const;
 };
@@ -165,6 +178,18 @@ struct context
         return (*this).private_detail_te_get_handle().get_queue();
     }
 
+    void wait_for(any_ptr queue)
+    {
+        assert((*this).private_detail_te_handle_mem_var);
+        (*this).private_detail_te_get_handle().wait_for(queue);
+    }
+
+    void finish_on(any_ptr queue)
+    {
+        assert((*this).private_detail_te_handle_mem_var);
+        (*this).private_detail_te_get_handle().finish_on(queue);
+    }
+
     void finish() const
     {
         assert((*this).private_detail_te_handle_mem_var);
@@ -187,6 +212,8 @@ struct context
         virtual value to_value() const          = 0;
         virtual void from_value(const value& v) = 0;
         virtual any_ptr get_queue()             = 0;
+        virtual void wait_for(any_ptr queue)    = 0;
+        virtual void finish_on(any_ptr queue)   = 0;
         virtual void finish() const             = 0;
     };
 
@@ -231,6 +258,33 @@ struct context
         return get_queue_context(private_detail_te_self);
     }
 
+    template <class T>
+    static auto private_detail_te_default_wait_for(char, T&& private_detail_te_self, any_ptr queue)
+        -> decltype(private_detail_te_self.wait_for(queue))
+    {
+        private_detail_te_self.wait_for(queue);
+    }
+
+    template <class T>
+    static void private_detail_te_default_wait_for(float, T&& private_detail_te_self, any_ptr queue)
+    {
+        wait_for_context(private_detail_te_self, queue);
+    }
+
+    template <class T>
+    static auto private_detail_te_default_finish_on(char, T&& private_detail_te_self, any_ptr queue)
+        -> decltype(private_detail_te_self.finish_on(queue))
+    {
+        private_detail_te_self.finish_on(queue);
+    }
+
+    template <class T>
+    static void
+    private_detail_te_default_finish_on(float, T&& private_detail_te_self, any_ptr queue)
+    {
+        finish_on_context(private_detail_te_self, queue);
+    }
+
     template <typename PrivateDetailTypeErasedT>
     struct private_detail_te_handle_type : private_detail_te_handle_base_type
     {
@@ -248,7 +302,7 @@ struct context
             PrivateDetailTypeErasedT value,
             typename std::enable_if<not std::is_reference<PrivateDetailTypeErasedU>::value,
                                     int>::type* = nullptr) noexcept
-            : private_detail_te_value(std::move(value))
+            : private_detail_te_value(value)
         {
         }
 
@@ -277,6 +331,18 @@ struct context
             return private_detail_te_default_get_queue(char(0), private_detail_te_value);
         }
 
+        void wait_for(any_ptr queue) override
+        {
+
+            private_detail_te_default_wait_for(char(0), private_detail_te_value, queue);
+        }
+
+        void finish_on(any_ptr queue) override
+        {
+
+            private_detail_te_default_finish_on(char(0), private_detail_te_value, queue);
+        }
+
         void finish() const override { private_detail_te_value.finish(); }
 
         PrivateDetailTypeErasedT private_detail_te_value;

src/include/migraphx/execution_environment.hpp

+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2022 Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MIGRAPHX_GUARD_MIGRAPHLIB_EXECUTION_ENV_HPP
+#define MIGRAPHX_GUARD_MIGRAPHLIB_EXECUTION_ENV_HPP
+
+#include <migraphx/any_ptr.hpp>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+
+struct execution_environment
+{
+    any_ptr queue = any_ptr{};
+    bool async    = false;
+};
+
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx
+
+#endif /* MIGRAPHX_GUARD_MIGRAPHLIB_EXECUTION_ENV_HPP */

src/include/migraphx/program.hpp

@@ -37,6 +37,7 @@
 #include <migraphx/assignment_options.hpp>
 #include <migraphx/env.hpp>
 #include <migraphx/config.hpp>
+#include <migraphx/execution_environment.hpp>
 #include <algorithm>
 #include <iostream>
 
@@ -76,8 +77,8 @@ struct program
 
     std::unordered_map<std::string, shape> get_parameter_shapes() const;
 
-    std::vector<argument> eval(parameter_map params) const;
-
+    std::vector<argument> eval(parameter_map params,
+                               execution_environment exec_env = execution_environment{}) const;
     std::size_t size() const;
 
     std::vector<shape> get_output_shapes() const;

src/include/migraphx/streamutils.hpp

@@ -28,6 +28,7 @@
 #include <algorithm>
 #include <migraphx/rank.hpp>
 #include <migraphx/config.hpp>
+#include <vector>
 
 namespace migraphx {
 inline namespace MIGRAPHX_INLINE_NS {
@@ -59,28 +60,35 @@ inline stream_range_container<Range> stream_range(const Range& r)
 
 namespace detail {
 
-inline void stream_write_value_impl(rank<2>, std::ostream& os, const std::string& x) { os << x; }
+template <class T>
+auto stream_write_value_impl(rank<1>, std::ostream& os, const T& x) -> decltype(os << x, void())
+{
+    os << x;
+}
 
-template <class Range>
-auto stream_write_value_impl(rank<1>, std::ostream& os, const Range& r)
-    -> decltype(r.begin(), r.end(), void())
+template <class T>
+void stream_write_value_impl(rank<1>, std::ostream& os, const std::vector<T>& r)
 {
     os << "{";
     os << stream_range(r);
     os << "}";
 }
 
-template <class T>
-void stream_write_value_impl(rank<0>, std::ostream& os, const T& x)
+template <class Range>
+auto stream_write_value_impl(rank<0>, std::ostream& os, const Range& r)
+    -> decltype(r.begin(), r.end(), void())
 {
-    os << x;
+    os << "{";
+    os << stream_range(r);
+    os << "}";
 }
+
 } // namespace detail
 
 template <class T>
 void stream_write_value(std::ostream& os, const T& x)
 {
-    detail::stream_write_value_impl(rank<2>{}, os, x);
+    detail::stream_write_value_impl(rank<1>{}, os, x);
 }
 
 } // namespace MIGRAPHX_INLINE_NS

src/include/migraphx/value.hpp

@@ -184,6 +184,12 @@ struct value
         {
         }
         explicit binary(std::size_t s) : base(s) {}
+
+        friend std::ostream& operator<<(std::ostream& os, const binary& obj)
+        {
+            os << "{binary_object: " << obj.size() << "}";
+            return os;
+        }
     };
 
     value() = default;

src/module.cpp

@@ -385,9 +385,13 @@ instruction_ref module::move_instruction(instruction_ref src, instruction_ref ds
 
 instruction_ref module::move_instructions(instruction_ref src, instruction_ref dst)
 {
-    this->move_instruction(src, dst);
     for(auto ins : src->inputs())
-        this->move_instruction(ins, src);
+    {
+        if(not contains(this->impl->instructions, ins))
+            continue;
+        this->move_instructions(ins, dst);
+    }
+    this->move_instruction(src, dst);
     return src;
 }
 

src/program.cpp

@@ -398,7 +398,7 @@ std::vector<argument> generic_eval(const program& p,
     return generic_eval(mm, ctx, params, {}, make_trace);
 }
 
-std::vector<argument> program::eval(parameter_map params) const
+std::vector<argument> program::eval(parameter_map params, execution_environment exec_env) const
 {
     auto& ctx = this->impl->ctx;
 #ifndef NDEBUG
@@ -423,6 +423,12 @@ std::vector<argument> program::eval(parameter_map params) const
 #endif
 
     auto trace_level = value_of(MIGRAPHX_TRACE_EVAL{});
+    std::vector<argument> ret;
+
+    if(exec_env.async)
+    {
+        ctx.wait_for(exec_env.queue);
+    }
 
     if(trace_level > 0)
     {
@@ -434,7 +440,7 @@ std::vector<argument> program::eval(parameter_map params) const
             ins_out[x] = ss.str();
         });
 
-        return generic_eval(*this,
+        ret = generic_eval(*this,
                            ctx,
                            std::move(params),
                            with_check_context([&](auto& ins, auto f, auto&& check_context) {
@@ -470,13 +476,20 @@ std::vector<argument> program::eval(parameter_map params) const
     }
     else
     {
-        return generic_eval(*this,
+        ret = generic_eval(*this,
                            ctx,
                            std::move(params),
                            with_check_context([&](auto&, auto f, auto&& check_context) {
                                return check_context(f);
                            }));
     }
+
+    if(exec_env.async)
+    {
+        ctx.finish_on(exec_env.queue);
+    }
+
+    return ret;
 }
 
 const int program_file_version = 5;

src/py/migraphx_py.cpp

@@ -355,6 +355,23 @@ MIGRAPHX_PYBIND11_MODULE(migraphx, m)
                  }
                  return p.eval(pm);
              })
+        .def("run_async",
+             [](migraphx::program& p,
+                py::dict params,
+                std::uintptr_t stream,
+                std::string stream_name) {
+                 migraphx::parameter_map pm;
+                 for(auto x : params)
+                 {
+                     std::string key      = x.first.cast<std::string>();
+                     py::buffer b         = x.second.cast<py::buffer>();
+                     py::buffer_info info = b.request();
+                     pm[key]              = migraphx::argument(to_shape(info), info.ptr);
+                 }
+                 migraphx::execution_environment exec_env{
+                     migraphx::any_ptr(reinterpret_cast<void*>(stream), stream_name), true};
+                 return p.eval(pm, exec_env);
+             })
         .def("sort", &migraphx::program::sort)
         .def("print", [](const migraphx::program& p) { std::cout << p << std::endl; })
         .def("__eq__", std::equal_to<migraphx::program>{})

src/simplify_algebra.cpp

@@ -435,6 +435,24 @@ struct find_concat_op
     }
 };
 
+void move_instructions_back(module& m, instruction_ref pos, std::vector<instruction_ref> inss)
+{
+    auto start = range(m.begin(), pos);
+    for(auto ins : iterator_for(start))
+    {
+        auto it = std::find(inss.begin(), inss.end(), ins);
+        if(it != inss.end())
+            inss.erase(it);
+    }
+    for(auto ins : inss)
+    {
+        if(not m.has_instruction(ins))
+            continue;
+        move_instructions_back(m, pos, ins->inputs());
+        m.move_instruction(ins, pos);
+    }
+}
+
 std::vector<instruction_ref> get_splits(instruction_ref ins)
 {
     std::vector<instruction_ref> result;
@@ -610,8 +628,7 @@ struct find_splits
                    }))
                     return;
 
-                for(auto data : data_args)
-                    m.move_instructions(data, ins);
+                move_instructions_back(m, ins, data_args);
 
                 auto slice_op = any_cast<op::slice>(splits.front()->get_operator());
                 assert(not slice_op.axes.empty());
@@ -864,8 +881,7 @@ struct find_conv_dot_horiz_fusion
                 concat_axis = axis;
             }
 
-            for(auto arg : args)
-                m.move_instructions(arg, input);
+            move_instructions_back(m, input, args);
             // TODO: Check if axes match
             auto concat =
                 m.insert_instruction(input, make_op("concat", {{"axis", concat_axis}}), args);

src/targets/gpu/CMakeLists.txt

@@ -239,9 +239,18 @@ endif()
 include(CheckLibraryExists)
 get_target_property(MIOPEN_LOCATION MIOpen LOCATION)
 check_library_exists(MIOpen "miopenHiddenSetConvolutionFindMode" "${MIOPEN_LOCATION}" HAS_FIND_MODE_API)
+check_library_exists(MIOpen "miopenFindSolutions" "${MIOPEN_LOCATION}" HAS_FIND_2_API)
+
+if(HAS_FIND_2_API) 
+    target_compile_definitions(migraphx_gpu PUBLIC -DMIGRAPHX_HAS_FIND_2_API)
+    message(STATUS "MIGraphx is using Find-2.0 API of MIOpen")
+else()
+    message(STATUS "MIOpen does not have Find-2.0 API")
+endif()
+
 if(HAS_FIND_MODE_API)
     target_compile_definitions(migraphx_gpu PUBLIC -DMIGRAPHX_HAS_FIND_MODE_API)
-    message(STATUS "MIOpen has find mode api")
+    message(STATUS "MIGraphx is using Find Mode API of MIOpen")
 else()
     message(STATUS "MIOpen does not have find mode api")
 endif()

src/targets/gpu/compile_gen.cpp

@@ -131,7 +131,7 @@ preload preload::broadcasts(std::size_t axis, const std::vector<shape>& inputs)
     std::size_t bytes = 0;
     for(auto i : preloaded)
     {
-        auto input = inputs[i];
+        const auto& input = inputs[i];
         bytes += input.bytes();
         if(bytes > max_lds_bytes)
             break;

src/targets/gpu/convolution.cpp

@@ -24,6 +24,7 @@
 #include <migraphx/gpu/convolution.hpp>
 #include <migraphx/gpu/context.hpp>
 #include <migraphx/generate.hpp>
+#include <miopen/miopen.h>
 
 namespace migraphx {
 inline namespace MIGRAPHX_INLINE_NS {
@@ -58,11 +59,37 @@ argument miopen_convolution::compute(context& ctx,
     auto x_desc                = make_tensor(reshape_if_1d(args[0].get_shape()));
     auto w_desc                = make_tensor(reshape_if_1d(args[1].get_shape()));
     auto y_desc                = make_tensor(reshape_if_1d(output_shape));
+    auto* miopen_stream_handle = ctx.get_stream().get_miopen();
+    auto workspace_size        = args[2].get_shape().bytes();
 
+#ifdef MIGRAPHX_HAS_FIND_2_API
+    {
+        const miopenTensorArgument_t tensor_args[3] = {
+            {miopenTensorConvolutionX, nullptr, args[0].implicit()},
+            {miopenTensorConvolutionW, nullptr, args[1].implicit()},
+            {miopenTensorConvolutionY, nullptr, args[3].implicit()},
+        };
+
+        if(solution_ptr.get() == nullptr)
+            MIGRAPHX_THROW("MIOpen Convolution : Load MIOpen Solution before running it");
+
+        auto status = miopenRunSolution(miopen_stream_handle,
+                                        solution_ptr.get(),
+                                        3,
+                                        tensor_args,
+                                        args[2].implicit(),
+                                        workspace_size);
+        if(status != miopenStatusSuccess)
+            MIGRAPHX_THROW("MIOpen Convolution: running convolution using find_2.0 failed");
+
+        return args[3];
+    }
+#else
+    // else use immediate mode
     if(solution_id == 0)
         MIGRAPHX_THROW("MIOpen Convolution: invalid solution ID");
 
-    auto status = miopenConvolutionForwardImmediate(ctx.get_stream().get_miopen(),
+    auto status = miopenConvolutionForwardImmediate(miopen_stream_handle,
                                                     w_desc.get(),
                                                     args[1].implicit(),
                                                     x_desc.get(),
@@ -71,29 +98,66 @@ argument miopen_convolution::compute(context& ctx,
                                                     y_desc.get(),
                                                     args[3].implicit(),
                                                     args[2].implicit(),
-                                                    args[2].get_shape().bytes(),
+                                                    workspace_size,
                                                     solution_id);
 
     if(status != miopenStatusSuccess)
         MIGRAPHX_THROW("MIOpen Convolution: running convolution failed");
     return args[3];
+#endif
 }
 
 shape miopen_convolution::find(context& ctx, const shape& output_shape, std::vector<shape> inputs)
 {
     shape workspace_shape{};
-
     auto x_desc                = make_tensor(reshape_if_1d(inputs[0]));
     auto w_desc                = make_tensor(reshape_if_1d(inputs[1]));
     auto y_desc                = make_tensor(reshape_if_1d(output_shape));
-
     std::size_t workspace_size = 0;
-    miopenConvolutionForwardGetWorkSpaceSize(ctx.get_stream().get_miopen(),
+
+#ifdef MIGRAPHX_HAS_FIND_2_API
+    {
+        auto conv_problem = make_obj<miopen_problem>(
+            &miopenCreateConvProblem, cd.get(), miopenProblemDirectionForward);
+
+        set_tensor_descriptor(miopenTensorConvolutionX, x_desc, conv_problem);
+        set_tensor_descriptor(miopenTensorConvolutionW, w_desc, conv_problem);
+        set_tensor_descriptor(miopenTensorConvolutionY, y_desc, conv_problem);
+
+        auto* miopen_stream_handle = ctx.get_stream().get_miopen();
+
+        solution_ptr = find_solution(miopen_stream_handle, conv_problem.get());
+
+        auto status = miopenGetSolutionWorkspaceSize(solution_ptr.get(), &workspace_size);
+        if(status != miopenStatusSuccess)
+            MIGRAPHX_THROW("MIOpen Convolution : failed to get solution's workspace size");
+
+        std::size_t solution_size;
+        status = miopenGetSolutionSize(solution_ptr.get(), &solution_size);
+        if(status != miopenStatusSuccess)
+            MIGRAPHX_THROW("MIOpen Convolution: Failed to fetch solution size");
+
+        auto solution_binary = std::vector<char>{};
+        solution_binary.resize(solution_size);
+
+        status = miopenSaveSolution(solution_ptr.get(), solution_binary.data());
+        if(status != miopenStatusSuccess)
+            MIGRAPHX_THROW("MIOpen Convolution: Saving solution failed");
+        solution_object = value::binary{solution_binary.data(), solution_size};
+
+        return shape{shape::int8_type, {workspace_size}};
+    }
+#else
+    // else use immediate find mode
+    auto status = miopenConvolutionForwardGetWorkSpaceSize(ctx.get_stream().get_miopen(),
                                                            w_desc.get(),
                                                            x_desc.get(),
                                                            cd.get(),
                                                            y_desc.get(),
                                                            &workspace_size);
+    if(status != miopenStatusSuccess)
+        MIGRAPHX_THROW("MIOpen Convolution: Failed to get forward workspace size");
+
     workspace_shape = shape{shape::int8_type, {workspace_size}};
 
     auto x         = to_gpu(generate_argument(inputs[0]));
@@ -103,7 +167,7 @@ shape miopen_convolution::find(context& ctx, const shape& output_shape, std::vec
 
     int algo_count = 1;
     miopenConvAlgoPerf_t perf;
-    auto status = miopenFindConvolutionForwardAlgorithm(ctx.get_stream().get_miopen(),
+    status = miopenFindConvolutionForwardAlgorithm(ctx.get_stream().get_miopen(),
                                                    x_desc.get(),
                                                    x.implicit(),
                                                    w_desc.get(),
@@ -148,12 +212,33 @@ shape miopen_convolution::find(context& ctx, const shape& output_shape, std::vec
     solution_id = solutions.front().solution_id;
 
     return shape{shape::int8_type, {perf.memory}};
+#endif
 }
 
 void miopen_convolution::finalize(context& ctx,
                                   const shape& output_shape,
-                                  std::vector<shape> inputs)
+                                  const std::vector<shape>& inputs)
 {
+#ifdef MIGRAPHX_HAS_FIND_2_API
+    {
+        (void)(ctx); // avoid warnings
+        (void)(output_shape);
+        (void)(inputs);
+        // load solution
+        if(solution_ptr == nullptr)
+        {
+            miopenSolution_t ptr;
+            auto status  = miopenLoadSolution(&ptr,
+                                             reinterpret_cast<const char*>(solution_object.data()),
+                                             solution_object.size());
+            solution_ptr = miopen_solution{ptr};
+            if(status != miopenStatusSuccess)
+                MIGRAPHX_THROW("MIOpen Convolution: loading convolution solution failed");
+        }
+    }
+#else
+    // Use immediate mode API
+    {
         if(cd == nullptr)
             cd = make_conv(op);
         if(solution_id == 0)
@@ -177,6 +262,8 @@ void miopen_convolution::finalize(context& ctx,
                                                               solution_id);
         if(status != miopenStatusSuccess)
             MIGRAPHX_THROW("MIOpen Convolution: compile solution failed");
+    }
+#endif
 }
 
 } // namespace gpu

src/targets/gpu/include/migraphx/gpu/context.hpp

@@ -197,7 +197,9 @@ struct hip_device
 struct context
 {
     context(std::size_t device_id = 0, std::size_t n = value_of(MIGRAPHX_NSTREAMS{}, 1))
-        : current_device(std::make_shared<hip_device>(device_id, n))
+        : current_device(std::make_shared<hip_device>(device_id, n)),
+          begin_event(create_event()),
+          finish_event(create_event())
     {
     }
 
@@ -274,6 +276,24 @@ struct context
         this->current_device = std::make_shared<hip_device>(0, n_streams);
     }
 
+    void wait_for(any_ptr queue)
+    {
+        auto status = hipEventRecord(begin_event.get(), queue.get<hipStream_t>());
+        if(status != hipSuccess)
+            MIGRAPHX_THROW("failed to record " + hip_error(status));
+
+        get_stream().wait(begin_event.get());
+    }
+
+    void finish_on(any_ptr queue)
+    {
+        get_stream().record(finish_event.get());
+
+        auto status = hipStreamWaitEvent(queue.get<hipStream_t>(), finish_event.get(), 0);
+        if(status != hipSuccess)
+            MIGRAPHX_THROW("Failed to wait on event " + hip_error(status));
+    }
+
     any_ptr get_queue() { return get_stream().get(); }
 
     void enable_perf_measurement(bool b = true)
@@ -317,8 +337,12 @@ struct context
     std::shared_ptr<hip_device> current_device;
     std::vector<shared<hip_event_ptr>> events;
     bool measure_perf = false;
+    // for event perf timing
     shared<hip_event_ptr> start_event = nullptr;
     shared<hip_event_ptr> stop_event  = nullptr;
+    // for stream syncronization
+    shared<hip_event_ptr> begin_event  = nullptr;
+    shared<hip_event_ptr> finish_event = nullptr;
 };
 
 inline void migraphx_to_value(value& v, const context& ctx) { v = ctx.to_value(); }