e03956e099
Other changes: - Remove the registration argument from prepare_src since it no longer is meant for RDMA buffers. - Additional cleanup and bugfixes.
706 строки
28 KiB
C
706 строки
28 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2011 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) 2004-2009 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) 2006-2007 Voltaire. All rights reserved.
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* Copyright (c) 2009-2010 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2010-2014 Los Alamos National Security, LLC.
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* All rights reserved.
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* Copyright (c) 2011 NVIDIA Corporation. All rights reserved.
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* Copyright (c) 2014 Intel, Inc. All rights reserved.
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* Copyright (c) 2014 Research Organization for Information Science
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* and Technology (RIST). 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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#include "opal_config.h"
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#include "opal/util/output.h"
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#include "opal/util/show_help.h"
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#include "opal/threads/mutex.h"
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#include "opal/mca/btl/base/btl_base_error.h"
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#include "btl_vader.h"
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#include "btl_vader_frag.h"
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#include "btl_vader_fifo.h"
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#include "btl_vader_fbox.h"
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#include "btl_vader_xpmem.h"
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#include <sys/mman.h>
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#include <fcntl.h>
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#ifdef HAVE_SYS_PRCTL_H
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#include <sys/prctl.h>
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#endif
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/* NTH: OS X does not define MAP_ANONYMOUS */
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#if !defined(MAP_ANONYMOUS)
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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static int mca_btl_vader_component_progress (void);
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static int mca_btl_vader_component_open(void);
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static int mca_btl_vader_component_close(void);
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static int mca_btl_vader_component_register(void);
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static mca_btl_base_module_t** mca_btl_vader_component_init(int *num_btls,
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bool enable_progress_threads,
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bool enable_mpi_threads);
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/* This enumeration is in order of preference */
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static mca_base_var_enum_value_t single_copy_mechanisms[] = {
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#if OPAL_BTL_VADER_HAVE_XPMEM
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{.value = MCA_BTL_VADER_XPMEM, .string = "xpmem"},
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#endif
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#if OPAL_BTL_VADER_HAVE_CMA
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{.value = MCA_BTL_VADER_CMA, .string = "cma"},
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#endif
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#if OPAL_BTL_VADER_HAVE_KNEM
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{.value = MCA_BTL_VADER_KNEM, .string = "knem"},
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#endif
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{.value = MCA_BTL_VADER_NONE, .string = "none"},
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{.value = 0, .string = NULL}
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};
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/*
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* Shared Memory (VADER) component instance.
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*/
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mca_btl_vader_component_t mca_btl_vader_component = {
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.super = {
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/* First, the mca_base_component_t struct containing meta information
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about the component itself */
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.btl_version = {
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MCA_BTL_DEFAULT_VERSION("vader"),
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.mca_open_component = mca_btl_vader_component_open,
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.mca_close_component = mca_btl_vader_component_close,
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.mca_register_component_params = mca_btl_vader_component_register,
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},
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.btl_data = {
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/* The component is checkpoint ready */
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.param_field = MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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.btl_init = mca_btl_vader_component_init,
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.btl_progress = mca_btl_vader_component_progress,
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} /* end super */
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};
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static void mca_btl_vader_dummy_rdma (void)
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{
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/* If a backtrace ends at this function something has gone wrong with
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* the btl bootstrapping. Check that the btl_get function was set to
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* something reasonable. */
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abort ();
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}
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static int mca_btl_vader_component_register (void)
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{
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mca_base_var_enum_t *new_enum;
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(void) mca_base_var_group_component_register(&mca_btl_vader_component.super.btl_version,
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"Enhanced shared memory byte transport later");
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/* register VADER component variables */
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mca_btl_vader_component.vader_free_list_num = 8;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"free_list_num", "Initial number of fragments "
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"to allocate for shared memory communication.",
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MCA_BASE_VAR_TYPE_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.vader_free_list_num);
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mca_btl_vader_component.vader_free_list_max = 4096;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"free_list_max", "Maximum number of fragments "
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"to allocate for shared memory communication.",
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MCA_BASE_VAR_TYPE_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.vader_free_list_max);
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mca_btl_vader_component.vader_free_list_inc = 64;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"free_list_inc", "Number of fragments to create "
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"on each allocation.", MCA_BASE_VAR_TYPE_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.vader_free_list_inc);
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mca_btl_vader_component.memcpy_limit = 524288;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"memcpy_limit", "Message size to switch from using "
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"memove to memcpy. The relative speed of these two "
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"routines can vary by size.", MCA_BASE_VAR_TYPE_INT,
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NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.memcpy_limit);
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#if OPAL_BTL_VADER_HAVE_XPMEM
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mca_btl_vader_component.log_attach_align = 21;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"log_align", "Log base 2 of the alignment to use for xpmem "
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"segments (default: 21, minimum: 12, maximum: 25)",
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MCA_BASE_VAR_TYPE_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.log_attach_align);
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#endif
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#if OPAL_BTL_VADER_HAVE_XPMEM && 64 == MCA_BTL_VADER_BITNESS
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mca_btl_vader_component.segment_size = 1 << 24;
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#else
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mca_btl_vader_component.segment_size = 1 << 22;
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#endif
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"segment_size", "Maximum size of all shared "
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#if OPAL_BTL_VADER_HAVE_XPMEM && 64 == MCA_BTL_VADER_BITNESS
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"memory buffers (default: 16M)",
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#else
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"memory buffers (default: 4M)",
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#endif
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MCA_BASE_VAR_TYPE_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.segment_size);
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mca_btl_vader_component.max_inline_send = 256;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"max_inline_send", "Maximum size to transfer "
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"using copy-in copy-out semantics",
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MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_LOCAL,
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&mca_btl_vader_component.max_inline_send);
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mca_btl_vader_component.fbox_threshold = 16;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"fbox_threshold", "Number of sends required "
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"before an eager send buffer is setup for a peer "
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"(default: 16)", MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL,
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0, MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_LOCAL, &mca_btl_vader_component.fbox_threshold);
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mca_btl_vader_component.fbox_max = 32;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"fbox_max", "Maximum number of eager send buffers "
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"to allocate (default: 32)", MCA_BASE_VAR_TYPE_UNSIGNED_INT,
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NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE, OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_LOCAL, &mca_btl_vader_component.fbox_max);
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mca_btl_vader_component.fbox_size = 4096;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"fbox_size", "Size of per-peer fast transfer buffers (default: 4k)",
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MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, MCA_BASE_VAR_FLAG_SETTABLE,
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OPAL_INFO_LVL_5, MCA_BASE_VAR_SCOPE_LOCAL, &mca_btl_vader_component.fbox_size);
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(void) mca_base_var_enum_create ("btl_vader_single_copy_mechanisms", single_copy_mechanisms, &new_enum);
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/* Default to the best available mechanism (see the enumerator for ordering) */
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mca_btl_vader_component.single_copy_mechanism = single_copy_mechanisms[0].value;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version,
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"single_copy_mechanism", "Single copy mechanism to use (defaults to best available)",
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MCA_BASE_VAR_TYPE_INT, new_enum, 0, MCA_BASE_VAR_FLAG_SETTABLE,
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OPAL_INFO_LVL_3, MCA_BASE_VAR_SCOPE_GROUP, &mca_btl_vader_component.single_copy_mechanism);
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#if OPAL_BTL_VADER_HAVE_KNEM
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/* Currently disabling DMA mode by default; it's not clear that this is useful in all applications and architectures. */
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mca_btl_vader_component.knem_dma_min = 0;
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(void) mca_base_component_var_register(&mca_btl_vader_component.super.btl_version, "knem_dma_min",
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"Minimum message size (in bytes) to use the knem DMA mode; "
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"ignored if knem does not support DMA mode (0 = do not use the "
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"knem DMA mode, default: 0)", MCA_BASE_VAR_TYPE_UNSIGNED_INT,
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NULL, 0, 0, OPAL_INFO_LVL_9, MCA_BASE_VAR_SCOPE_READONLY,
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&mca_btl_vader_component.knem_dma_min);
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#endif
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mca_btl_vader.super.btl_exclusivity = MCA_BTL_EXCLUSIVITY_HIGH;
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if (MCA_BTL_VADER_XPMEM == mca_btl_vader_component.single_copy_mechanism) {
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mca_btl_vader.super.btl_eager_limit = 32 * 1024;
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mca_btl_vader.super.btl_rndv_eager_limit = mca_btl_vader.super.btl_eager_limit;
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mca_btl_vader.super.btl_max_send_size = mca_btl_vader.super.btl_eager_limit;
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mca_btl_vader.super.btl_min_rdma_pipeline_size = mca_btl_vader.super.btl_eager_limit;
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} else {
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mca_btl_vader.super.btl_eager_limit = 4 * 1024;
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mca_btl_vader.super.btl_rndv_eager_limit = 32 * 1024;
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mca_btl_vader.super.btl_max_send_size = 32 * 1024;
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mca_btl_vader.super.btl_min_rdma_pipeline_size = 32 * 1024;
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}
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mca_btl_vader.super.btl_rdma_pipeline_send_length = mca_btl_vader.super.btl_eager_limit;
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mca_btl_vader.super.btl_rdma_pipeline_frag_size = mca_btl_vader.super.btl_eager_limit;
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if (MCA_BTL_VADER_NONE != mca_btl_vader_component.single_copy_mechanism) {
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mca_btl_vader.super.btl_flags = MCA_BTL_FLAGS_RDMA | MCA_BTL_FLAGS_SEND_INPLACE;
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/* Single copy mechanisms should provide better bandwidth */
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mca_btl_vader.super.btl_bandwidth = 40000; /* Mbs */
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/* Set dummy values so the RDMA flag doesn't get unset by mca_btl_base_param_verify() */
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mca_btl_vader.super.btl_get = (mca_btl_base_module_get_fn_t) mca_btl_vader_dummy_rdma;
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mca_btl_vader.super.btl_put = (mca_btl_base_module_get_fn_t) mca_btl_vader_dummy_rdma;
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} else {
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mca_btl_vader.super.btl_flags = MCA_BTL_FLAGS_SEND_INPLACE;
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mca_btl_vader.super.btl_bandwidth = 10000; /* Mbs */
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}
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mca_btl_vader.super.btl_latency = 1; /* Microsecs */
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/* Call the BTL based to register its MCA params */
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mca_btl_base_param_register(&mca_btl_vader_component.super.btl_version,
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&mca_btl_vader.super);
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return OPAL_SUCCESS;
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}
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/*
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* Called by MCA framework to open the component, registers
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* component parameters.
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*/
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static int mca_btl_vader_component_open(void)
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{
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/* initialize objects */
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OBJ_CONSTRUCT(&mca_btl_vader_component.vader_frags_eager, ompi_free_list_t);
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OBJ_CONSTRUCT(&mca_btl_vader_component.vader_frags_user, ompi_free_list_t);
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OBJ_CONSTRUCT(&mca_btl_vader_component.vader_frags_max_send, ompi_free_list_t);
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#if OPAL_BTL_VADER_HAVE_KNEM
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OBJ_CONSTRUCT(&mca_btl_vader_component.registration_handles, ompi_free_list_t);
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#endif
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OBJ_CONSTRUCT(&mca_btl_vader_component.lock, opal_mutex_t);
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OBJ_CONSTRUCT(&mca_btl_vader_component.pending_endpoints, opal_list_t);
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OBJ_CONSTRUCT(&mca_btl_vader_component.pending_fragments, opal_list_t);
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#if OPAL_BTL_VADER_HAVE_KNEM
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mca_btl_vader.knem_fd = -1;
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#endif
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return OPAL_SUCCESS;
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}
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/*
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* component cleanup - sanity checking of queue lengths
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*/
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static int mca_btl_vader_component_close(void)
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{
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OBJ_DESTRUCT(&mca_btl_vader_component.vader_frags_eager);
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OBJ_DESTRUCT(&mca_btl_vader_component.vader_frags_user);
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OBJ_DESTRUCT(&mca_btl_vader_component.vader_frags_max_send);
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#if OPAL_BTL_VADER_HAVE_KNEM
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OBJ_DESTRUCT(&mca_btl_vader_component.registration_handles);
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#endif
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OBJ_DESTRUCT(&mca_btl_vader_component.lock);
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OBJ_DESTRUCT(&mca_btl_vader_component.pending_endpoints);
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OBJ_DESTRUCT(&mca_btl_vader_component.pending_fragments);
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if (NULL != mca_btl_vader_component.my_segment) {
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munmap (mca_btl_vader_component.my_segment, mca_btl_vader_component.segment_size);
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}
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#if OPAL_BTL_VADER_HAVE_KNEM
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mca_btl_vader_knem_fini ();
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#endif
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return OPAL_SUCCESS;
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}
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static int mca_btl_base_vader_modex_send (void)
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{
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union vader_modex_t modex;
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int modex_size, rc;
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#if OPAL_BTL_VADER_HAVE_XPMEM
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if (MCA_BTL_VADER_XPMEM == mca_btl_vader_component.single_copy_mechanism) {
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modex.xpmem.seg_id = mca_btl_vader_component.my_seg_id;
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modex.xpmem.segment_base = mca_btl_vader_component.my_segment;
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modex_size = sizeof (modex);
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} else {
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#endif
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modex_size = opal_shmem_sizeof_shmem_ds (&mca_btl_vader_component.seg_ds);
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memmove (&modex.seg_ds, &mca_btl_vader_component.seg_ds, modex_size);
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#if OPAL_BTL_VADER_HAVE_XPMEM
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}
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#endif
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OPAL_MODEX_SEND(rc, PMIX_SYNC_REQD, PMIX_LOCAL,
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&mca_btl_vader_component.super.btl_version, &modex, modex_size);
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return rc;
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}
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#if OPAL_BTL_VADER_HAVE_XPMEM || OPAL_BTL_VADER_HAVE_CMA || OPAL_BTL_VADER_HAVE_KNEM
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static void mca_btl_vader_select_next_single_copy_mechanism (void)
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{
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for (int i = 0 ; single_copy_mechanisms[i].value != MCA_BTL_VADER_NONE ; ++i) {
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if (single_copy_mechanisms[i].value == mca_btl_vader_component.single_copy_mechanism) {
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mca_btl_vader_component.single_copy_mechanism = single_copy_mechanisms[i+1].value;
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return;
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}
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}
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}
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static void mca_btl_vader_check_single_copy (void)
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{
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int initial_mechanism = mca_btl_vader_component.single_copy_mechanism;
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#if OPAL_BTL_VADER_HAVE_XPMEM
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if (MCA_BTL_VADER_XPMEM == mca_btl_vader_component.single_copy_mechanism) {
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/* try to create an xpmem segment for the entire address space */
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mca_btl_vader_component.my_seg_id = xpmem_make (0, VADER_MAX_ADDRESS, XPMEM_PERMIT_MODE, (void *)0666);
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if (-1 == mca_btl_vader_component.my_seg_id) {
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if (MCA_BTL_VADER_XPMEM == initial_mechanism) {
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opal_show_help("help-btl-vader.txt", "xpmem-make-failed",
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true, opal_process_info.nodename, errno,
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strerror(errno));
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}
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mca_btl_vader_select_next_single_copy_mechanism ();
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} else {
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|
mca_btl_vader.super.btl_get = mca_btl_vader_get_xpmem;
|
|
mca_btl_vader.super.btl_put = mca_btl_vader_get_xpmem;
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
#if OPAL_BTL_VADER_HAVE_CMA
|
|
if (MCA_BTL_VADER_CMA == mca_btl_vader_component.single_copy_mechanism) {
|
|
/* Check if we have the proper permissions for CMA */
|
|
char buffer = {0};
|
|
bool cma_happy = false;
|
|
int fd;
|
|
|
|
/* check system setting for current ptrace scope */
|
|
fd = open ("/proc/sys/kernel/yama/ptrace_scope", O_RDONLY);
|
|
if (0 > fd) {
|
|
read (fd, &buffer, 1);
|
|
close (fd);
|
|
}
|
|
|
|
/* ptrace scope 0 will allow an attach from any of the process owner's
|
|
* processes. ptrace scope 1 limits attachers to the process tree
|
|
* starting at the parent of this process. */
|
|
if ('0' != buffer) {
|
|
#if defined PR_SET_PTRACER
|
|
/* try setting the ptrace scope to allow attach */
|
|
int ret = prctl (PR_SET_PTRACER, PR_SET_PTRACER_ANY, 0, 0, 0);
|
|
if (0 == ret) {
|
|
cma_happy = true;
|
|
}
|
|
#endif
|
|
} else {
|
|
cma_happy = true;
|
|
}
|
|
|
|
if (!cma_happy) {
|
|
mca_btl_vader_select_next_single_copy_mechanism ();
|
|
|
|
if (MCA_BTL_VADER_CMA == initial_mechanism) {
|
|
opal_show_help("help-btl-vader.txt", "cma-permission-denied",
|
|
true, opal_process_info.nodename);
|
|
}
|
|
} else {
|
|
/* ptrace_scope will allow CMA */
|
|
mca_btl_vader.super.btl_get = mca_btl_vader_get_cma;
|
|
mca_btl_vader.super.btl_put = mca_btl_vader_put_cma;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if OPAL_BTL_VADER_HAVE_KNEM
|
|
if (MCA_BTL_VADER_KNEM == mca_btl_vader_component.single_copy_mechanism) {
|
|
/* mca_btl_vader_knem_init will set the appropriate get/put functions */
|
|
rc = mca_btl_vader_knem_init ();
|
|
if (OPAL_SUCCESS != rc) {
|
|
if (MCA_BTL_VADER_KNEM == initial_mechanism) {
|
|
opal_show_help("help-btl-vader.txt", "knem requested but not available",
|
|
true, opal_process_info.nodename);
|
|
}
|
|
|
|
/* disable single copy */
|
|
mca_btl_vader_select_next_single_copy_mechanism ();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (MCA_BTL_VADER_NONE == mca_btl_vader_component.single_copy_mechanism) {
|
|
mca_btl_vader.super.btl_flags &= ~MCA_BTL_FLAGS_RDMA;
|
|
mca_btl_vader.super.btl_get = NULL;
|
|
mca_btl_vader.super.btl_put = NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* VADER component initialization
|
|
*/
|
|
static mca_btl_base_module_t **mca_btl_vader_component_init (int *num_btls,
|
|
bool enable_progress_threads,
|
|
bool enable_mpi_threads)
|
|
{
|
|
mca_btl_vader_component_t *component = &mca_btl_vader_component;
|
|
mca_btl_base_module_t **btls = NULL;
|
|
int rc;
|
|
|
|
*num_btls = 0;
|
|
|
|
/* disable if there are no local peers */
|
|
if (0 == MCA_BTL_VADER_NUM_LOCAL_PEERS) {
|
|
BTL_VERBOSE(("No peers to communicate with. Disabling vader."));
|
|
return NULL;
|
|
}
|
|
|
|
#if OPAL_BTL_VADER_HAVE_XPMEM
|
|
/* limit segment alignment to be between 4k and 16M */
|
|
if (component->log_attach_align < 12) {
|
|
component->log_attach_align = 12;
|
|
} else if (component->log_attach_align > 25) {
|
|
component->log_attach_align = 25;
|
|
}
|
|
#endif
|
|
|
|
btls = (mca_btl_base_module_t **) calloc (1, sizeof (mca_btl_base_module_t *));
|
|
if (NULL == btls) {
|
|
return NULL;
|
|
}
|
|
|
|
/* ensure a sane segment size */
|
|
if (component->segment_size < (2 << 20)) {
|
|
component->segment_size = (2 << 20);
|
|
}
|
|
|
|
component->fbox_size = (component->fbox_size + MCA_BTL_VADER_FBOX_ALIGNMENT_MASK) & ~MCA_BTL_VADER_FBOX_ALIGNMENT_MASK;
|
|
|
|
if (component->segment_size > (1ul << MCA_BTL_VADER_OFFSET_BITS)) {
|
|
component->segment_size = 2ul << MCA_BTL_VADER_OFFSET_BITS;
|
|
}
|
|
|
|
/* no fast boxes allocated initially */
|
|
component->num_fbox_in_endpoints = 0;
|
|
component->fbox_count = 0;
|
|
|
|
#if OPAL_BTL_VADER_HAVE_XPMEM || OPAL_BTL_VADER_HAVE_CMA || OPAL_BTL_VADER_HAVE_KNEM
|
|
mca_btl_vader_check_single_copy ();
|
|
#endif
|
|
|
|
if (MCA_BTL_VADER_XPMEM != mca_btl_vader_component.single_copy_mechanism) {
|
|
char *sm_file;
|
|
|
|
rc = asprintf(&sm_file, "%s" OPAL_PATH_SEP "vader_segment.%s.%d", opal_process_info.proc_session_dir,
|
|
opal_process_info.nodename, MCA_BTL_VADER_LOCAL_RANK);
|
|
if (0 > rc) {
|
|
free (btls);
|
|
return NULL;
|
|
}
|
|
|
|
rc = opal_shmem_segment_create (&component->seg_ds, sm_file, component->segment_size);
|
|
free (sm_file);
|
|
if (OPAL_SUCCESS != rc) {
|
|
BTL_VERBOSE(("Could not create shared memory segment"));
|
|
free (btls);
|
|
return NULL;
|
|
}
|
|
|
|
component->my_segment = opal_shmem_segment_attach (&component->seg_ds);
|
|
if (NULL == component->my_segment) {
|
|
BTL_VERBOSE(("Could not attach to just created shared memory segment"));
|
|
goto failed;
|
|
}
|
|
} else {
|
|
/* when using xpmem it is safe to use an anonymous segment */
|
|
component->my_segment = mmap (NULL, component->segment_size, PROT_READ |
|
|
PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, -1, 0);
|
|
if ((void *)-1 == component->my_segment) {
|
|
BTL_VERBOSE(("Could not create anonymous memory segment"));
|
|
free (btls);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
component->segment_offset = 0;
|
|
|
|
/* initialize my fifo */
|
|
vader_fifo_init ((struct vader_fifo_t *) component->my_segment);
|
|
|
|
rc = mca_btl_base_vader_modex_send ();
|
|
if (OPAL_SUCCESS != rc) {
|
|
BTL_VERBOSE(("Error sending modex"));
|
|
goto failed;
|
|
}
|
|
|
|
*num_btls = 1;
|
|
|
|
/* get pointer to the btls */
|
|
btls[0] = (mca_btl_base_module_t *) &mca_btl_vader;
|
|
|
|
/* set flag indicating btl not inited */
|
|
mca_btl_vader.btl_inited = false;
|
|
|
|
return btls;
|
|
failed:
|
|
#if OPAL_BTL_VADER_HAVE_XPMEM
|
|
if (MCA_BTL_VADER_XPMEM == mca_btl_vader_component.single_copy_mechanism) {
|
|
munmap (component->my_segment, component->segment_size);
|
|
} else
|
|
#endif
|
|
opal_shmem_unlink (&component->seg_ds);
|
|
|
|
if (btls) {
|
|
free (btls);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void mca_btl_vader_poll_handle_frag (mca_btl_vader_hdr_t *hdr, struct mca_btl_base_endpoint_t *endpoint)
|
|
{
|
|
mca_btl_base_segment_t segments[2];
|
|
mca_btl_base_descriptor_t frag = {.des_segments = segments, .des_segment_count = 1};
|
|
const mca_btl_active_message_callback_t *reg;
|
|
|
|
if (hdr->flags & MCA_BTL_VADER_FLAG_COMPLETE) {
|
|
mca_btl_vader_frag_complete (hdr->frag);
|
|
return;
|
|
}
|
|
|
|
reg = mca_btl_base_active_message_trigger + hdr->tag;
|
|
segments[0].seg_addr.pval = (void *) (hdr + 1);
|
|
segments[0].seg_len = hdr->len;
|
|
|
|
if (hdr->flags & MCA_BTL_VADER_FLAG_SINGLE_COPY) {
|
|
mca_mpool_base_registration_t *xpmem_reg;
|
|
|
|
xpmem_reg = vader_get_registation (endpoint, hdr->sc_iov.iov_base,
|
|
hdr->sc_iov.iov_len, 0,
|
|
&segments[1].seg_addr.pval);
|
|
|
|
segments[1].seg_len = hdr->sc_iov.iov_len;
|
|
frag.des_segment_count = 2;
|
|
|
|
/* recv upcall */
|
|
reg->cbfunc(&mca_btl_vader.super, hdr->tag, &frag, reg->cbdata);
|
|
vader_return_registration (xpmem_reg, endpoint);
|
|
} else {
|
|
reg->cbfunc(&mca_btl_vader.super, hdr->tag, &frag, reg->cbdata);
|
|
}
|
|
|
|
if (OPAL_UNLIKELY(MCA_BTL_VADER_FLAG_SETUP_FBOX & hdr->flags)) {
|
|
mca_btl_vader_endpoint_setup_fbox_recv (endpoint, relative2virtual(hdr->fbox_base));
|
|
mca_btl_vader_component.fbox_in_endpoints[mca_btl_vader_component.num_fbox_in_endpoints++] = endpoint;
|
|
}
|
|
|
|
hdr->flags = MCA_BTL_VADER_FLAG_COMPLETE;
|
|
vader_fifo_write_back (hdr, endpoint);
|
|
}
|
|
|
|
static int mca_btl_vader_poll_fifo (void)
|
|
{
|
|
struct mca_btl_base_endpoint_t *endpoint;
|
|
mca_btl_vader_hdr_t *hdr;
|
|
|
|
/* poll the fifo until it is empty or a limit has been hit (8 is arbitrary) */
|
|
for (int fifo_count = 0 ; fifo_count < 31 ; ++fifo_count) {
|
|
hdr = vader_fifo_read (mca_btl_vader_component.my_fifo, &endpoint);
|
|
if (NULL == hdr) {
|
|
return fifo_count;
|
|
}
|
|
|
|
mca_btl_vader_poll_handle_frag (hdr, endpoint);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Progress pending messages on an endpoint
|
|
*
|
|
* @param ep (IN) Vader BTL endpoint
|
|
*
|
|
* This is called with the component lock held so the component lock does
|
|
* not need to be aquired before modifying the pending_endpoints list.
|
|
*/
|
|
static void mca_btl_vader_progress_waiting (mca_btl_base_endpoint_t *ep)
|
|
{
|
|
mca_btl_vader_frag_t *frag;
|
|
|
|
if (OPAL_UNLIKELY(NULL == ep)) {
|
|
return;
|
|
}
|
|
|
|
OPAL_THREAD_LOCK(&ep->lock);
|
|
ep->waiting = false;
|
|
while (NULL != (frag = (mca_btl_vader_frag_t *) opal_list_remove_first (&ep->pending_frags))) {
|
|
OPAL_THREAD_UNLOCK(&ep->lock);
|
|
if (!vader_fifo_write_ep (frag->hdr, ep)) {
|
|
opal_list_prepend (&ep->pending_frags, (opal_list_item_t *) frag);
|
|
opal_list_append (&mca_btl_vader_component.pending_endpoints, &ep->super);
|
|
ep->waiting = true;
|
|
break;
|
|
}
|
|
OPAL_THREAD_LOCK(&ep->lock);
|
|
}
|
|
OPAL_THREAD_UNLOCK(&ep->lock);
|
|
}
|
|
|
|
/**
|
|
* Progress pending messages on all waiting endpoints
|
|
*
|
|
* @param ep (IN) Vader BTL endpoint
|
|
*/
|
|
static void mca_btl_vader_progress_endpoints (void)
|
|
{
|
|
int count;
|
|
|
|
count = opal_list_get_size (&mca_btl_vader_component.pending_endpoints);
|
|
if (OPAL_LIKELY(0 == count)) {
|
|
return;
|
|
}
|
|
|
|
OPAL_THREAD_LOCK(&mca_btl_vader_component.lock);
|
|
for (int i = 0 ; i < count ; ++i) {
|
|
mca_btl_vader_progress_waiting ((mca_btl_base_endpoint_t *) opal_list_remove_first (&mca_btl_vader_component.pending_endpoints));
|
|
}
|
|
OPAL_THREAD_LOCK(&mca_btl_vader_component.lock);
|
|
}
|
|
|
|
static int mca_btl_vader_component_progress (void)
|
|
{
|
|
static int32_t lock = 0;
|
|
int count = 0;
|
|
|
|
if (opal_using_threads()) {
|
|
if (opal_atomic_swap_32 (&lock, 1)) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* check for messages in fast boxes */
|
|
if (mca_btl_vader_component.num_fbox_in_endpoints) {
|
|
count = mca_btl_vader_check_fboxes ();
|
|
}
|
|
|
|
mca_btl_vader_progress_endpoints ();
|
|
|
|
if (VADER_FIFO_FREE == mca_btl_vader_component.my_fifo->fifo_head) {
|
|
lock = 0;
|
|
return count;
|
|
}
|
|
|
|
count += mca_btl_vader_poll_fifo ();
|
|
opal_atomic_mb ();
|
|
lock = 0;
|
|
|
|
return count;
|
|
}
|