Add IPC backend

* add backend_ipc.{cpp & hpp}
* rename context_ipc.{cpp & hpp} to context_ipc_device.{cpp & hpp}
* add host interface to IPC backend
* add context_ipc_host.{cpp & hpp} to support host interface
* add USE_RO compile flag to enable support for single backend interface at a time
* add ipc_single script to build rocSHMEM with IPC backend

src/ipc/context_ipc_device.cpp

@@ -0,0 +1,129 @@
+/******************************************************************************
+ * Copyright (c) 2024 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.
+ *****************************************************************************/
+
+#include "context_ipc_device.hpp"
+#include "context_ipc_tmpl_device.hpp"
+
+#include <hip/hip_runtime.h>
+#include <hip/amd_detail/amd_device_functions.h>
+#include <unistd.h>
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "config.h"  // NOLINT(build/include_subdir)
+#include "roc_shmem/roc_shmem.hpp"
+
+namespace rocshmem {
+
+__host__ IPCContext::IPCContext(Backend *b)
+    : Context(b, false) {
+}
+
+__device__ void IPCContext::threadfence_system() {
+}
+
+__device__ void IPCContext::ctx_create() {
+}
+
+__device__ void IPCContext::ctx_destroy(){
+}
+
+__device__ void IPCContext::putmem(void *dest, const void *source, size_t nelems,
+                                  int pe) {
+}
+
+__device__ void IPCContext::getmem(void *dest, const void *source, size_t nelems,
+                                  int pe) {
+}
+
+__device__ void IPCContext::putmem_nbi(void *dest, const void *source,
+                                      size_t nelems, int pe) {
+}
+
+__device__ void IPCContext::getmem_nbi(void *dest, const void *source,
+                                      size_t nelems, int pe) {
+}
+
+__device__ void IPCContext::fence() {
+}
+
+__device__ void IPCContext::fence(int pe) {
+}
+
+__device__ void IPCContext::quiet() {
+}
+
+__device__ void *IPCContext::shmem_ptr(const void *dest, int pe) {
+  void *ret = nullptr;
+  return ret;
+}
+
+__device__ void IPCContext::barrier_all() {
+  __syncthreads();
+}
+
+__device__ void IPCContext::sync_all() {
+  __syncthreads();
+}
+
+__device__ void IPCContext::sync(roc_shmem_team_t team) {
+  __syncthreads();
+}
+
+__device__ void IPCContext::putmem_wg(void *dest, const void *source,
+                                     size_t nelems, int pe) {
+  __syncthreads();
+}
+
+__device__ void IPCContext::getmem_wg(void *dest, const void *source,
+                                     size_t nelems, int pe) {
+  __syncthreads();
+}
+
+__device__ void IPCContext::putmem_nbi_wg(void *dest, const void *source,
+                                         size_t nelems, int pe) {
+  __syncthreads();
+}
+
+__device__ void IPCContext::getmem_nbi_wg(void *dest, const void *source,
+                                         size_t nelems, int pe) {
+  __syncthreads();
+}
+
+__device__ void IPCContext::putmem_wave(void *dest, const void *source,
+                                       size_t nelems, int pe) {
+}
+
+__device__ void IPCContext::getmem_wave(void *dest, const void *source,
+                                       size_t nelems, int pe) {
+}
+
+__device__ void IPCContext::putmem_nbi_wave(void *dest, const void *source,
+                                           size_t nelems, int pe) {
+}
+
+__device__ void IPCContext::getmem_nbi_wave(void *dest, const void *source,
+                                           size_t nelems, int pe) {
+}
+
+}  // namespace rocshmem