65e8277add
Also, some other changes to bring the csum PML up to date with changes that happened in ob1 over the last two years. This includes a few bug fixes and some minor refactoring. This commit was SVN r23757.
320 строки
12 KiB
C
320 строки
12 KiB
C
/*
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* Copyright (c) 2004-2005 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) 2004-2007 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) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2009 IBM Corporation. All rights reserved.
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* Copyright (c) 2009 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2010 Oracle and/or its affiliates. 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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/**
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* @file
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*/
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#ifndef MCA_PML_CSUM_H
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#define MCA_PML_CSUM_H
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#include "ompi_config.h"
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#include "ompi/class/ompi_free_list.h"
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#include "ompi/request/request.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/pml/base/pml_base_request.h"
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#include "ompi/mca/pml/base/pml_base_bsend.h"
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#include "ompi/mca/pml/base/pml_base_sendreq.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "pml_csum_hdr.h"
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#include "ompi/mca/bml/base/base.h"
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#include "ompi/proc/proc.h"
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#include "ompi/mca/allocator/base/base.h"
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BEGIN_C_DECLS
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/**
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* CSUM PML module
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*/
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struct mca_pml_csum_t {
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mca_pml_base_module_t super;
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int free_list_num; /* initial size of free list */
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int free_list_max; /* maximum size of free list */
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int free_list_inc; /* number of elements to grow free list */
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size_t send_pipeline_depth;
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size_t recv_pipeline_depth;
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size_t rdma_put_retries_limit;
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int max_rdma_per_request;
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int max_send_per_range;
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bool leave_pinned;
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int leave_pinned_pipeline;
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/* lock queue access */
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opal_mutex_t lock;
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/* free lists */
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ompi_free_list_t rdma_frags;
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ompi_free_list_t recv_frags;
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ompi_free_list_t pending_pckts;
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ompi_free_list_t buffers;
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ompi_free_list_t send_ranges;
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/* list of pending operations */
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opal_list_t pckt_pending;
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opal_list_t send_pending;
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opal_list_t recv_pending;
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opal_list_t rdma_pending;
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/* List of pending fragments without a matching communicator */
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opal_list_t non_existing_communicator_pending;
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bool enabled;
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char* allocator_name;
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mca_allocator_base_module_t* allocator;
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uint32_t unexpected_limit;
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};
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typedef struct mca_pml_csum_t mca_pml_csum_t;
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extern mca_pml_csum_t mca_pml_csum;
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extern int mca_pml_csum_output;
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/*
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* PML interface functions.
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*/
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extern int mca_pml_csum_add_comm(
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struct ompi_communicator_t* comm
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);
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extern int mca_pml_csum_del_comm(
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struct ompi_communicator_t* comm
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);
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extern int mca_pml_csum_add_procs(
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struct ompi_proc_t **procs,
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size_t nprocs
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);
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extern int mca_pml_csum_del_procs(
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struct ompi_proc_t **procs,
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size_t nprocs
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);
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extern int mca_pml_csum_enable( bool enable );
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extern int mca_pml_csum_progress(void);
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extern int mca_pml_csum_iprobe( int dst,
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int tag,
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struct ompi_communicator_t* comm,
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int *matched,
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ompi_status_public_t* status );
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extern int mca_pml_csum_probe( int dst,
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int tag,
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struct ompi_communicator_t* comm,
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ompi_status_public_t* status );
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extern int mca_pml_csum_isend_init( void *buf,
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size_t count,
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ompi_datatype_t *datatype,
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int dst,
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int tag,
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mca_pml_base_send_mode_t mode,
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struct ompi_communicator_t* comm,
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struct ompi_request_t **request );
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extern int mca_pml_csum_isend( void *buf,
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size_t count,
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ompi_datatype_t *datatype,
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int dst,
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int tag,
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mca_pml_base_send_mode_t mode,
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struct ompi_communicator_t* comm,
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struct ompi_request_t **request );
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extern int mca_pml_csum_send( void *buf,
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size_t count,
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ompi_datatype_t *datatype,
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int dst,
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int tag,
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mca_pml_base_send_mode_t mode,
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struct ompi_communicator_t* comm );
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extern int mca_pml_csum_irecv_init( void *buf,
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size_t count,
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ompi_datatype_t *datatype,
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int src,
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int tag,
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struct ompi_communicator_t* comm,
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struct ompi_request_t **request );
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extern int mca_pml_csum_irecv( void *buf,
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size_t count,
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ompi_datatype_t *datatype,
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int src,
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int tag,
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struct ompi_communicator_t* comm,
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struct ompi_request_t **request );
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extern int mca_pml_csum_recv( void *buf,
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size_t count,
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ompi_datatype_t *datatype,
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int src,
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int tag,
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struct ompi_communicator_t* comm,
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ompi_status_public_t* status );
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extern int mca_pml_csum_dump( struct ompi_communicator_t* comm,
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int verbose );
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extern int mca_pml_csum_start( size_t count,
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ompi_request_t** requests );
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extern int mca_pml_csum_ft_event( int state );
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END_C_DECLS
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struct mca_pml_csum_pckt_pending_t {
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ompi_free_list_item_t super;
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ompi_proc_t* proc;
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mca_pml_csum_hdr_t hdr;
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struct mca_bml_base_btl_t *bml_btl;
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uint8_t order;
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};
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typedef struct mca_pml_csum_pckt_pending_t mca_pml_csum_pckt_pending_t;
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OBJ_CLASS_DECLARATION(mca_pml_csum_pckt_pending_t);
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#define MCA_PML_CSUM_PCKT_PENDING_ALLOC(pckt,rc) \
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do { \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_WAIT(&mca_pml_csum.pending_pckts, item, rc); \
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pckt = (mca_pml_csum_pckt_pending_t*)item; \
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} while (0)
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#define MCA_PML_CSUM_PCKT_PENDING_RETURN(pckt) \
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do { \
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/* return packet */ \
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OMPI_FREE_LIST_RETURN(&mca_pml_csum.pending_pckts, \
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(ompi_free_list_item_t*)pckt); \
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} while(0)
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#define MCA_PML_CSUM_ADD_FIN_TO_PENDING(P, D, B, O, S) \
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do { \
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mca_pml_csum_pckt_pending_t *_pckt; \
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int _rc; \
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\
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MCA_PML_CSUM_PCKT_PENDING_ALLOC(_pckt,_rc); \
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_pckt->hdr.hdr_common.hdr_type = MCA_PML_CSUM_HDR_TYPE_FIN; \
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_pckt->hdr.hdr_fin.hdr_des = (D); \
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_pckt->hdr.hdr_fin.hdr_fail = (S); \
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_pckt->proc = (P); \
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_pckt->bml_btl = (B); \
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_pckt->order = (O); \
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OPAL_THREAD_LOCK(&mca_pml_csum.lock); \
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opal_list_append(&mca_pml_csum.pckt_pending, \
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(opal_list_item_t*)_pckt); \
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OPAL_THREAD_UNLOCK(&mca_pml_csum.lock); \
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} while(0)
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int mca_pml_csum_send_fin(ompi_proc_t* proc, mca_bml_base_btl_t* bml_btl,
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ompi_ptr_t hdr_des, uint8_t order, uint32_t status);
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/* This function tries to resend FIN/ACK packets from pckt_pending queue.
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* Packets are added to the queue when sending of FIN or ACK is failed due to
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* resource unavailability. bml_btl passed to the function doesn't represents
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* packet's destination, it represents BTL on which resource was freed, so only
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* this BTL should be considered for resending packets */
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void mca_pml_csum_process_pending_packets(mca_bml_base_btl_t* bml_btl);
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/* This function retries failed PUT/GET operations on frag. When RDMA operation
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* cannot be accomplished for some reason, frag is put on the rdma_pending list.
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* Later the operation is retried. The destination of RDMA operation is stored
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* inside the frag structure */
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void mca_pml_csum_process_pending_rdma(void);
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#define MCA_PML_CSUM_PROGRESS_PENDING(bml_btl) \
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do { \
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if(opal_list_get_size(&mca_pml_csum.pckt_pending)) \
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mca_pml_csum_process_pending_packets(bml_btl); \
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if(opal_list_get_size(&mca_pml_csum.recv_pending)) \
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mca_pml_csum_recv_request_process_pending(); \
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if(opal_list_get_size(&mca_pml_csum.send_pending)) \
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mca_pml_csum_send_request_process_pending(bml_btl); \
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if(opal_list_get_size(&mca_pml_csum.rdma_pending)) \
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mca_pml_csum_process_pending_rdma(); \
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} while (0)
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/*
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* Compute the total number of bytes on supplied descriptor
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*/
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#define MCA_PML_CSUM_COMPUTE_SEGMENT_LENGTH(segments, count, hdrlen, length) \
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do { \
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size_t i; \
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\
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for( i = 0; i < count; i++ ) { \
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length += segments[i].seg_len; \
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} \
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length -= hdrlen; \
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} while(0)
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/* represent BTL chosen for sending request */
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struct mca_pml_csum_com_btl_t {
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mca_bml_base_btl_t *bml_btl;
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struct mca_mpool_base_registration_t* btl_reg;
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size_t length;
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};
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typedef struct mca_pml_csum_com_btl_t mca_pml_csum_com_btl_t;
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int mca_pml_csum_com_btl_comp(const void *v1, const void *v2);
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/* Calculate what percentage of a message to send through each BTL according to
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* relative weight */
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static inline void
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mca_pml_csum_calc_weighted_length( mca_pml_csum_com_btl_t *btls, int num_btls, size_t size,
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double weight_total )
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{
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int i;
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size_t length_left;
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/* shortcut for common case for only one BTL */
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if( OPAL_LIKELY(1 == num_btls) ) {
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btls[0].length = size;
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return;
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}
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/* sort BTLs according of their weights so BTLs with smaller weight will
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* not hijack all of the traffic */
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qsort( btls, num_btls, sizeof(mca_pml_csum_com_btl_t),
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mca_pml_csum_com_btl_comp );
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for(length_left = size, i = 0; i < num_btls; i++) {
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mca_bml_base_btl_t* bml_btl = btls[i].bml_btl;
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size_t length = 0;
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if( OPAL_UNLIKELY(0 != length_left) ) {
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length = (length_left > bml_btl->btl->btl_eager_limit)?
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((size_t)(size * (bml_btl->btl_weight / weight_total))) :
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length_left;
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if(length > length_left)
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length = length_left;
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length_left -= length;
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}
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btls[i].length = length;
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}
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/* account for rounding errors */
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btls[0].length += length_left;
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}
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#endif
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