100 строки
4.7 KiB
C
100 строки
4.7 KiB
C
/*
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* Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2006 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2011 NVIDIA Corporation. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef OMPI_MCA_COMMON_CUDA_H
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#define OMPI_MCA_COMMON_CUDA_H
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#include "ompi/mca/btl/btl.h"
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#include "opal/datatype/opal_convertor.h"
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#define MEMHANDLE_SIZE 8
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#define EVTHANDLE_SIZE 8
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struct mca_mpool_common_cuda_reg_t {
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mca_mpool_base_registration_t base;
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uint64_t memHandle[MEMHANDLE_SIZE];
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uint64_t evtHandle[EVTHANDLE_SIZE];
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uint64_t event;
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};
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typedef struct mca_mpool_common_cuda_reg_t mca_mpool_common_cuda_reg_t;
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extern bool mca_common_cuda_enabled;
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OMPI_DECLSPEC int mca_common_cuda_register_mca_variables(void);
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OMPI_DECLSPEC void mca_common_cuda_register(void *ptr, size_t amount, char *msg);
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OMPI_DECLSPEC void mca_common_cuda_unregister(void *ptr, char *msg);
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OMPI_DECLSPEC void mca_common_wait_stream_synchronize(mca_mpool_common_cuda_reg_t *rget_reg);
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OMPI_DECLSPEC int mca_common_cuda_memcpy(void *dst, void *src, size_t amount, char *msg,
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struct mca_btl_base_descriptor_t *, int *done);
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OMPI_DECLSPEC int mca_common_cuda_record_ipc_event(char *msg,
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struct mca_btl_base_descriptor_t *frag);
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OMPI_DECLSPEC int mca_common_cuda_record_dtoh_event(char *msg,
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struct mca_btl_base_descriptor_t *frag);
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OMPI_DECLSPEC int mca_common_cuda_record_htod_event(char *msg,
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struct mca_btl_base_descriptor_t *frag);
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OMPI_DECLSPEC void *mca_common_cuda_get_dtoh_stream(void);
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OMPI_DECLSPEC void *mca_common_cuda_get_htod_stream(void);
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OMPI_DECLSPEC int progress_one_cuda_ipc_event(struct mca_btl_base_descriptor_t **);
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OMPI_DECLSPEC int progress_one_cuda_dtoh_event(struct mca_btl_base_descriptor_t **);
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OMPI_DECLSPEC int progress_one_cuda_htod_event(struct mca_btl_base_descriptor_t **);
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OMPI_DECLSPEC int mca_common_cuda_memhandle_matches(mca_mpool_common_cuda_reg_t *new_reg,
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mca_mpool_common_cuda_reg_t *old_reg);
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OMPI_DECLSPEC void mca_common_cuda_construct_event_and_handle(uint64_t **event, void **handle);
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OMPI_DECLSPEC void mca_common_cuda_destruct_event(uint64_t *event);
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OMPI_DECLSPEC int cuda_getmemhandle(void *base, size_t, mca_mpool_base_registration_t *newreg,
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mca_mpool_base_registration_t *hdrreg);
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OMPI_DECLSPEC int cuda_ungetmemhandle(void *reg_data, mca_mpool_base_registration_t *reg);
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OMPI_DECLSPEC int cuda_openmemhandle(void *base, size_t size, mca_mpool_base_registration_t *newreg,
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mca_mpool_base_registration_t *hdrreg);
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OMPI_DECLSPEC int cuda_closememhandle(void *reg_data, mca_mpool_base_registration_t *reg);
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OMPI_DECLSPEC int mca_common_cuda_get_device(int *devicenum);
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OMPI_DECLSPEC int mca_common_cuda_device_can_access_peer(int *access, int dev1, int dev2);
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OMPI_DECLSPEC int mca_common_cuda_stage_one_init(void);
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OMPI_DECLSPEC int mca_common_cuda_get_address_range(void *pbase, size_t *psize, void *base);
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#if OPAL_CUDA_GDR_SUPPORT
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OMPI_DECLSPEC bool mca_common_cuda_previously_freed_memory(mca_mpool_base_registration_t *reg);
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OMPI_DECLSPEC void mca_common_cuda_get_buffer_id(mca_mpool_base_registration_t *reg);
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#endif /* OPAL_CUDA_GDR_SUPPORT */
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/**
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* Return: 0 if no packing is required for sending (the upper layer
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* can use directly the pointer to the contiguous user
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* buffer).
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* 1 if data does need to be packed, i.e. heterogeneous peers
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* (source arch != dest arch) or non contiguous memory
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* layout.
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*/
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static inline int32_t opal_convertor_cuda_need_buffers( opal_convertor_t* pConvertor )
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{
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int32_t retval;
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uint32_t cudaflag = pConvertor->flags & CONVERTOR_CUDA; /* Save CUDA flag */
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pConvertor->flags &= ~CONVERTOR_CUDA; /* Clear CUDA flag if it exists */
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retval = opal_convertor_need_buffers(pConvertor);
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pConvertor->flags |= cudaflag; /* Restore CUDA flag */
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return retval;
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}
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#endif /* OMPI_MCA_COMMON_CUDA_H */
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