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/*
* Copyright (c) 2014 Intel, Inc. All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2017-2022 Amazon.com, Inc. or its affiliates.
* All Rights reserved.
* Copyright (c) 2022 Advanced Micro Devices, Inc. All Rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdio.h>
#include <dlfcn.h>
#include "opal/mca/dl/base/base.h"
#include "opal/runtime/opal_params.h"
#include "accelerator_rocm.h"
int opal_accelerator_rocm_memcpy_async = 1;
int opal_accelerator_rocm_verbose = 0;
size_t opal_accelerator_rocm_memcpyD2H_limit=1024;
size_t opal_accelerator_rocm_memcpyH2D_limit=1048576;
/* Initialization lock for lazy rocm initialization */
static opal_mutex_t accelerator_rocm_init_lock;
static bool accelerator_rocm_init_complete = false;
hipStream_t opal_accelerator_rocm_MemcpyStream = NULL;
/*
* Public string showing the accelerator rocm component version number
*/
const char *opal_accelerator_rocm_component_version_string
= "OPAL rocm accelerator MCA component version " OPAL_VERSION;
#define HIP_CHECK(condition) \
{ \
hipError_t error = condition; \
if (hipSuccess != error){ \
const char* msg = hipGetErrorString(error); \
opal_output(0, "HIP error: %d %s file: %s line: %d\n", error, msg, __FILE__, __LINE__); \
return error; \
} \
}
#define HIP_CHECK_RETNULL(condition) \
{ \
hipError_t error = condition; \
if (hipSuccess != error){ \
const char* msg = hipGetErrorString(error); \
opal_output(0, "HIP error: %d %s file: %s line: %d\n", error, msg, __FILE__, __LINE__); \
return NULL; \
} \
}
/*
* Local function
*/
static int accelerator_rocm_open(void);
static int accelerator_rocm_close(void);
static int accelerator_rocm_component_register(void);
static opal_accelerator_base_module_t* accelerator_rocm_init(void);
static void accelerator_rocm_finalize(opal_accelerator_base_module_t* module);
/*
* Instantiate the public struct with all of our public information
* and pointers to our public functions in it
*/
opal_accelerator_rocm_component_t mca_accelerator_rocm_component = {{
/* First, the mca_component_t struct containing meta information
* about the component itself */
.base_version =
{
/* Indicate that we are a accelerator v1.1.0 component (which also
* implies a specific MCA version) */
OPAL_ACCELERATOR_BASE_VERSION_1_0_0,
/* Component name and version */
.mca_component_name = "rocm",
MCA_BASE_MAKE_VERSION(component, OPAL_MAJOR_VERSION, OPAL_MINOR_VERSION,
OPAL_RELEASE_VERSION),
/* Component open and close functions */
.mca_open_component = accelerator_rocm_open,
.mca_close_component = accelerator_rocm_close,
.mca_register_component_params = accelerator_rocm_component_register,
},
/* Next the MCA v1.0.0 component meta data */
.base_data =
{ /* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT},
.accelerator_init = accelerator_rocm_init,
.accelerator_finalize = accelerator_rocm_finalize,
}};
static int accelerator_rocm_open(void)
{
/* construct the component fields */
return OPAL_SUCCESS;
}
static int accelerator_rocm_close(void)
{
return OPAL_SUCCESS;
}
static int accelerator_rocm_component_register(void)
{
/* Set verbosity in the rocm related code. */
opal_accelerator_rocm_verbose = 0;
(void) mca_base_var_register("ompi", "mpi", "accelerator_rocm", "verbose",
"Set level of rocm verbosity", MCA_BASE_VAR_TYPE_INT, NULL,
0, 0, OPAL_INFO_LVL_9, MCA_BASE_VAR_SCOPE_READONLY,
&opal_accelerator_rocm_verbose);
/* Switching point between using memcpy and hipMemcpy* functions. */
opal_accelerator_rocm_memcpyD2H_limit = 1024;
(void) mca_base_var_register("ompi", "mpi", "accelerator_rocm", "memcpyD2H_limit",
"Max. msg. length to use memcpy instead of hip functions "
"for device-to-host copy operations",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9, MCA_BASE_VAR_SCOPE_READONLY,
&opal_accelerator_rocm_memcpyD2H_limit);
/* Switching point between using memcpy and hipMemcpy* functions. */
opal_accelerator_rocm_memcpyH2D_limit = 1048576;
(void) mca_base_var_register("ompi", "mpi", "accelerator_rocm", "memcpyH2D_limit",
"Max. msg. length to use memcpy instead of hip functions "
"for host-to-device copy operations",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9, MCA_BASE_VAR_SCOPE_READONLY,
&opal_accelerator_rocm_memcpyH2D_limit);
/* Use this flag to test async vs sync copies */
opal_accelerator_rocm_memcpy_async = 1;
(void) mca_base_var_register("ompi", "mpi", "accelerator_rocm", "memcpy_async",
"Set to 0 to force using hipMemcpy instead of hipMemcpyAsync",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0, OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &opal_accelerator_rocm_memcpy_async);
return OPAL_SUCCESS;
}
int opal_accelerator_rocm_lazy_init()
{
int err = OPAL_SUCCESS;
/* Double checked locking to avoid having to
* grab locks post lazy-initialization. */
opal_atomic_rmb();
if (true == accelerator_rocm_init_complete) {
return OPAL_SUCCESS;
}
OPAL_THREAD_LOCK(&accelerator_rocm_init_lock);
/* If already initialized, just exit */
if (true == accelerator_rocm_init_complete) {
goto out;
}
err = hipStreamCreate(&opal_accelerator_rocm_MemcpyStream);
if (hipSuccess != err) {
opal_output(0, "Could not create hipStream, err=%d %s\n",
err, hipGetErrorString(err));
goto out;
}
err = OPAL_SUCCESS;
opal_atomic_wmb();
accelerator_rocm_init_complete = true;
out:
OPAL_THREAD_UNLOCK(&accelerator_rocm_init_lock);
return err;
}
static opal_accelerator_base_module_t* accelerator_rocm_init(void)
{
OBJ_CONSTRUCT(&accelerator_rocm_init_lock, opal_mutex_t);
hipError_t err;
if (opal_rocm_runtime_initialized) {
return NULL;
}
int count=0;
err = hipGetDeviceCount(&count);
if (hipSuccess != err || 0 == count) {
opal_output(0, "No HIP capabale device found. Disabling component.\n");
return NULL;
}
opal_atomic_mb();
opal_rocm_runtime_initialized = true;
return &opal_accelerator_rocm_module;
}
static void accelerator_rocm_finalize(opal_accelerator_base_module_t* module)
{
if (NULL != (void*)opal_accelerator_rocm_MemcpyStream) {
hipError_t err = hipStreamDestroy(opal_accelerator_rocm_MemcpyStream);
if (hipSuccess != err) {
opal_output_verbose(10, 0, "hip_dl_finalize: error while destroying the hipStream\n");
}
opal_accelerator_rocm_MemcpyStream = NULL;
}
OBJ_DESTRUCT(&accelerator_rocm_init_lock);
return;
}
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