c68c6ac122
- Added some basic flow control to limit number of posted sends. - Merged endpoint send/recv lock into single endpoint lock. - Set the LMR triplet length in the send path, not at allocation time. This has to be done because upper layers might send less than the amount allocated. - Alter the tie-breaker if statement protecting the second call to dat_ep_connect(). The logic was reversed compared to the tie- breaker for the first dat_ep_connect(), making it possible for 3 or more processes to form a deadlock loop. - Some asserts were added for debugging purposes.. leaving them in place for now. This commit was SVN r10317.
346 строки
9.7 KiB
C
346 строки
9.7 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) 2004-2005 The Regents of the University of California.
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* 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_BTL_UDAPL_H
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#define MCA_BTL_UDAPL_H
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/* Standard system includes */
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#include <sys/types.h>
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#include <string.h>
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#include <dat/udat.h>
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/* Open MPI includes */
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#include "ompi/class/ompi_free_list.h"
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#include "ompi/class/ompi_bitmap.h"
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#include "opal/event/event.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/btl/btl.h"
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#include "ompi/mca/btl/base/base.h"
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#include "opal/util/output.h"
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#include "ompi/mca/mpool/mpool.h"
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#include "ompi/mca/btl/btl.h"
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#include "btl_udapl_endpoint.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* uDAPL BTL component.
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*/
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struct mca_btl_udapl_component_t {
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mca_btl_base_component_1_0_0_t super; /**< base BTL component */
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size_t udapl_num_btls; /**< number of hcas available to the uDAPL component */
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size_t udapl_max_btls; /**< maximum number of supported hcas */
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struct mca_btl_udapl_module_t **udapl_btls; /**< array of available BTL modules */
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size_t udapl_evd_qlen;
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int32_t udapl_num_recvs; /**< number of recv buffers to keep posted */
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int32_t udapl_num_sends; /**< number of sends to post on endpoint */
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int32_t udapl_timeout; /**< connection timeout, in microseconds */
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size_t udapl_eager_frag_size;
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size_t udapl_max_frag_size;
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DAT_CONN_QUAL udapl_port_low; /**< first port for binding service point */
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DAT_CONN_QUAL udapl_port_high; /**< last port for binding service point */
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int udapl_free_list_num; /**< initial size of free lists */
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int udapl_free_list_max; /**< maximum size of free lists */
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int udapl_free_list_inc; /**< number of elements to alloc when growing */
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opal_list_t udapl_procs; /**< list of udapl proc structures */
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opal_mutex_t udapl_lock; /**< lock for accessing module state */
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char* udapl_mpool_name; /**< name of memory pool */
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bool leave_pinned; /**< pin memory on first use and leave pinned */
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};
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typedef struct mca_btl_udapl_component_t mca_btl_udapl_component_t;
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extern mca_btl_udapl_component_t mca_btl_udapl_component;
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/**
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* BTL Module Interface
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*/
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struct mca_btl_udapl_module_t {
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mca_btl_base_module_t super; /**< base BTL interface */
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mca_btl_base_recv_reg_t udapl_reg[256];
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mca_btl_udapl_addr_t udapl_addr;
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/* uDAPL interface and other handles */
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DAT_IA_HANDLE udapl_ia;
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DAT_PZ_HANDLE udapl_pz;
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DAT_PSP_HANDLE udapl_psp;
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/* event dispatchers - async, data transfer, connection negotiation */
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DAT_EVD_HANDLE udapl_evd_async;
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DAT_EVD_HANDLE udapl_evd_dto;
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DAT_EVD_HANDLE udapl_evd_conn;
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/* free list of fragment descriptors */
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ompi_free_list_t udapl_frag_eager;
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ompi_free_list_t udapl_frag_max;
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ompi_free_list_t udapl_frag_user;
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opal_mutex_t udapl_lock; /* lock for accessing module state */
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};
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typedef struct mca_btl_udapl_module_t mca_btl_udapl_module_t;
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extern mca_btl_udapl_module_t mca_btl_udapl_module;
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/**
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* Report a uDAPL error - for debugging
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*/
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#if OMPI_ENABLE_DEBUG
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extern void mca_btl_udapl_error(DAT_RETURN ret, char* str);
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#define MCA_BTL_UDAPL_ERROR(ret, str) \
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mca_btl_udapl_error((ret), (str));
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#else
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#define MCA_BTL_UDAPL_ERROR(ret, str)
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#endif
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/**
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* Register uDAPL component parameters with the MCA framework
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*/
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extern int mca_btl_udapl_component_open(void);
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/**
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* Any final cleanup before being unloaded.
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*/
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extern int mca_btl_udapl_component_close(void);
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/**
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* uDAPL component initialization.
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*
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* @param num_btl_modules (OUT) Number of BTLs returned in BTL array.
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* @param allow_multi_user_threads (OUT) Flag indicating wether BTL supports user threads (TRUE)
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* @param have_hidden_threads (OUT) Flag indicating wether BTL uses threads (TRUE)
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*/
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extern mca_btl_base_module_t** mca_btl_udapl_component_init(
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int *num_btl_modules,
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bool allow_multi_user_threads,
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bool have_hidden_threads
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);
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/**
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* uDAPL component progress.
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*/
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extern int mca_btl_udapl_component_progress(void);
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/**
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* Initialize resources for a new BTL/uDAPL IA
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*
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* @param ia_name Name of uDAPL interface adapter
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* @param btl BTL instance.
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* @return OMPI_SUCCESS or error status on failure.
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*/
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extern int mca_btl_udapl_init(
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DAT_NAME_PTR ia_name,
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struct mca_btl_udapl_module_t* btl
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);
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/**
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* Cleanup any resources held by the BTL.
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*
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* @param btl BTL instance.
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* @return OMPI_SUCCESS or error status on failure.
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*/
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extern int mca_btl_udapl_finalize(
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struct mca_btl_base_module_t* btl
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);
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/**
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* PML->BTL notification of change in the process list.
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*
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* @param btl (IN)
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* @param nprocs (IN) Number of processes
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* @param procs (IN) Set of processes
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* @param peers (OUT) Set of (optional) peer addressing info.
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* @param peers (IN/OUT) Set of processes that are reachable via this BTL.
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* @return OMPI_SUCCESS or error status on failure.
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*
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*/
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extern int mca_btl_udapl_add_procs(
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struct mca_btl_base_module_t* btl,
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size_t nprocs,
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struct ompi_proc_t **procs,
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struct mca_btl_base_endpoint_t** peers,
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ompi_bitmap_t* reachable
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);
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/**
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* PML->BTL notification of change in the process list.
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*
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* @param btl (IN) BTL instance
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* @param nproc (IN) Number of processes.
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* @param procs (IN) Set of processes.
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* @param peers (IN) Set of peer data structures.
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* @return Status indicating if cleanup was successful
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*
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*/
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extern int mca_btl_udapl_del_procs(
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struct mca_btl_base_module_t* btl,
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size_t nprocs,
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struct ompi_proc_t **procs,
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struct mca_btl_base_endpoint_t** peers
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);
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/**
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* Initiate an asynchronous send.
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*
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* @param btl (IN) BTL module
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* @param endpoint (IN) BTL addressing information
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* @param descriptor (IN) Description of the data to be transfered
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* @param tag (IN) The tag value used to notify the peer.
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*/
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extern int mca_btl_udapl_send(
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struct mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* btl_peer,
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struct mca_btl_base_descriptor_t* descriptor,
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mca_btl_base_tag_t tag
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);
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/**
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* Initiate an asynchronous put.
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*
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* @param btl (IN) BTL module
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* @param endpoint (IN) BTL addressing information
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* @param descriptor (IN) Description of the data to be transferred
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*/
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extern int mca_btl_udapl_put(
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struct mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* btl_peer,
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struct mca_btl_base_descriptor_t* decriptor
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);
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/**
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* Initiate an asynchronous get.
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*
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* @param btl (IN) BTL module
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* @param endpoint (IN) BTL addressing information
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* @param descriptor (IN) Description of the data to be transferred
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*/
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extern int mca_btl_udapl_get(
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struct mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* btl_peer,
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struct mca_btl_base_descriptor_t* decriptor
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);
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/**
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* Register a callback function that is called on receipt
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* of a fragment.
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*
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* @param btl (IN) BTL module
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* @return Status indicating if registration was successful
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*
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*/
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extern int mca_btl_udapl_register(
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struct mca_btl_base_module_t* btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_module_recv_cb_fn_t cbfunc,
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void* cbdata);
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/**
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* Allocate a descriptor with a segment of the requested size.
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* Note that the BTL layer may choose to return a smaller size
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* if it cannot support the request.
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*
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* @param btl (IN) BTL module
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* @param size (IN) Request segment size.
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*/
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extern mca_btl_base_descriptor_t* mca_btl_udapl_alloc(
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struct mca_btl_base_module_t* btl,
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size_t size);
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/**
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* Return a segment allocated by this BTL.
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*
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* @param btl (IN) BTL module
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* @param descriptor (IN) Allocated descriptor.
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*/
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extern int mca_btl_udapl_free(
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struct mca_btl_base_module_t* btl,
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mca_btl_base_descriptor_t* des);
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/**
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* Prepare a descriptor for send/rdma using the supplied
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* convertor. If the convertor references data that is contigous,
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* the descriptor may simply point to the user buffer. Otherwise,
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* this routine is responsible for allocating buffer space and
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* packing if required.
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*
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* @param btl (IN) BTL module
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* @param endpoint (IN) BTL peer addressing
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* @param convertor (IN) Data type convertor
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* @param reserve (IN) Additional bytes requested by upper layer to precede user data
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* @param size (IN/OUT) Number of bytes to prepare (IN), number of bytes actually prepared (OUT)
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*/
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mca_btl_base_descriptor_t* mca_btl_udapl_prepare_src(
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struct mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* peer,
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struct mca_mpool_base_registration_t*,
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struct ompi_convertor_t* convertor,
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size_t reserve,
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size_t* size
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);
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extern mca_btl_base_descriptor_t* mca_btl_udapl_prepare_dst(
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struct mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* peer,
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struct mca_mpool_base_registration_t*,
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struct ompi_convertor_t* convertor,
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size_t reserve,
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size_t* size);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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